forked from osmocom/wireshark
2503 lines
83 KiB
C
2503 lines
83 KiB
C
/* packet-kerberos.c
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* Routines for Kerberos
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* Wes Hardaker (c) 2000
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* wjhardaker@ucdavis.edu
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* Richard Sharpe (C) 2002, rsharpe@samba.org, modularized a bit more and
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* added AP-REQ and AP-REP dissection
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*
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* Ronnie Sahlberg (C) 2004, major rewrite for new ASN.1/BER API.
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* decryption of kerberos blobs if keytab is provided
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*
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* See RFC 1510, and various I-Ds and other documents showing additions,
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* e.g. ones listed under
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*
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* http://www.isi.edu/people/bcn/krb-revisions/
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*
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* and
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*
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* http://www.ietf.org/internet-drafts/draft-ietf-krb-wg-kerberos-clarifications-07.txt
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*
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* and
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*
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* http://www.ietf.org/internet-drafts/draft-ietf-krb-wg-kerberos-referrals-05.txt
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*
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* Some structures from RFC2630
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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* Some of the development of the Kerberos protocol decoder was sponsored by
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* Cable Television Laboratories, Inc. ("CableLabs") based upon proprietary
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* CableLabs' specifications. Your license and use of this protocol decoder
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* does not mean that you are licensed to use the CableLabs'
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* specifications. If you have questions about this protocol, contact
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* jf.mule [AT] cablelabs.com or c.stuart [AT] cablelabs.com for additional
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* information.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <epan/packet.h>
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#include <epan/exceptions.h>
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#include <epan/strutil.h>
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#include <epan/conversation.h>
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#include <epan/asn1.h>
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#include <epan/expert.h>
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#include <epan/prefs.h>
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#include <wsutil/file_util.h>
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#include <wsutil/ws_diag_control.h>
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#include "packet-kerberos.h"
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#include "packet-netbios.h"
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#include "packet-tcp.h"
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#include "packet-ber.h"
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#include "packet-pkinit.h"
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#include "packet-cms.h"
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#include "packet-windows-common.h"
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#include "packet-dcerpc-netlogon.h"
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#include "packet-dcerpc.h"
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#include "packet-gssapi.h"
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#include "packet-smb-common.h"
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void proto_register_kerberos(void);
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void proto_reg_handoff_kerberos(void);
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#define UDP_PORT_KERBEROS 88
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#define TCP_PORT_KERBEROS 88
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#define ADDRESS_STR_BUFSIZ 256
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typedef struct kerberos_key {
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guint32 keytype;
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int keylength;
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const guint8 *keyvalue;
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} kerberos_key_t;
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typedef struct {
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guint32 etype;
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guint32 padata_type;
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guint32 enctype;
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kerberos_key_t key;
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guint32 ad_type;
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guint32 addr_type;
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guint32 checksum_type;
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} kerberos_private_data_t;
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static dissector_handle_t kerberos_handle_udp;
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/* Forward declarations */
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static int dissect_kerberos_Applications(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_);
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static int dissect_kerberos_PA_ENC_TIMESTAMP(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_);
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static int dissect_kerberos_KERB_PA_PAC_REQUEST(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_);
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static int dissect_kerberos_PA_S4U2Self(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_);
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static int dissect_kerberos_ETYPE_INFO(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_);
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static int dissect_kerberos_ETYPE_INFO2(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_);
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static int dissect_kerberos_AD_IF_RELEVANT(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_);
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/* Desegment Kerberos over TCP messages */
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static gboolean krb_desegment = TRUE;
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static gint proto_kerberos = -1;
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static gint hf_krb_rm_reserved = -1;
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static gint hf_krb_rm_reclen = -1;
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static gint hf_krb_provsrv_location = -1;
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static gint hf_krb_smb_nt_status = -1;
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static gint hf_krb_smb_unknown = -1;
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static gint hf_krb_address_ip = -1;
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static gint hf_krb_address_netbios = -1;
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static gint hf_krb_address_ipv6 = -1;
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static gint hf_krb_gssapi_len = -1;
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static gint hf_krb_gssapi_bnd = -1;
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static gint hf_krb_gssapi_dlgopt = -1;
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static gint hf_krb_gssapi_dlglen = -1;
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static gint hf_krb_gssapi_c_flag_deleg = -1;
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static gint hf_krb_gssapi_c_flag_mutual = -1;
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static gint hf_krb_gssapi_c_flag_replay = -1;
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static gint hf_krb_gssapi_c_flag_sequence = -1;
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static gint hf_krb_gssapi_c_flag_conf = -1;
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static gint hf_krb_gssapi_c_flag_integ = -1;
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static gint hf_krb_gssapi_c_flag_dce_style = -1;
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static gint hf_krb_midl_version = -1;
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static gint hf_krb_midl_hdr_len = -1;
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static gint hf_krb_midl_fill_bytes = -1;
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static gint hf_krb_midl_blob_len = -1;
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static gint hf_krb_pac_signature_type = -1;
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static gint hf_krb_pac_signature_signature = -1;
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static gint hf_krb_w2k_pac_entries = -1;
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static gint hf_krb_w2k_pac_version = -1;
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static gint hf_krb_w2k_pac_type = -1;
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static gint hf_krb_w2k_pac_size = -1;
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static gint hf_krb_w2k_pac_offset = -1;
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static gint hf_krb_pac_clientid = -1;
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static gint hf_krb_pac_namelen = -1;
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static gint hf_krb_pac_clientname = -1;
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static gint hf_krb_pac_logon_info = -1;
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static gint hf_krb_pac_credential_type = -1;
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static gint hf_krb_pac_s4u_delegation_info = -1;
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static gint hf_krb_pac_upn_dns_info = -1;
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static gint hf_krb_pac_upn_flags = -1;
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static gint hf_krb_pac_upn_dns_offset = -1;
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static gint hf_krb_pac_upn_dns_len = -1;
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static gint hf_krb_pac_upn_upn_offset = -1;
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static gint hf_krb_pac_upn_upn_len = -1;
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static gint hf_krb_pac_upn_upn_name = -1;
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static gint hf_krb_pac_upn_dns_name = -1;
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static gint hf_krb_pac_server_checksum = -1;
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static gint hf_krb_pac_privsvr_checksum = -1;
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static gint hf_krb_pac_client_info_type = -1;
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#include "packet-kerberos-hf.c"
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/* Initialize the subtree pointers */
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static gint ett_kerberos = -1;
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static gint ett_krb_recordmark = -1;
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static gint ett_krb_pac = -1;
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static gint ett_krb_pac_drep = -1;
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static gint ett_krb_pac_midl_blob = -1;
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static gint ett_krb_pac_logon_info = -1;
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static gint ett_krb_pac_s4u_delegation_info = -1;
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static gint ett_krb_pac_upn_dns_info = -1;
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static gint ett_krb_pac_server_checksum = -1;
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static gint ett_krb_pac_privsvr_checksum = -1;
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static gint ett_krb_pac_client_info_type = -1;
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#include "packet-kerberos-ett.c"
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static expert_field ei_kerberos_decrypted_keytype = EI_INIT;
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static expert_field ei_kerberos_address = EI_INIT;
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static expert_field ei_krb_gssapi_dlglen = EI_INIT;
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static dissector_handle_t krb4_handle=NULL;
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/* Global variables */
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static guint32 krb5_errorcode;
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static guint32 gbl_keytype;
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static gboolean gbl_do_col_info;
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#include "packet-kerberos-val.h"
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static void
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call_kerberos_callbacks(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int tag, kerberos_callbacks *cb)
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{
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if(!cb){
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return;
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}
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while(cb->tag){
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if(cb->tag==tag){
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cb->callback(pinfo, tvb, tree);
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return;
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}
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cb++;
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}
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return;
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}
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static kerberos_private_data_t*
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kerberos_get_private_data(asn1_ctx_t *actx)
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{
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if (!actx->private_data) {
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actx->private_data = wmem_new0(wmem_packet_scope(), kerberos_private_data_t);
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}
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return (kerberos_private_data_t *)(actx->private_data);
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}
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#ifdef HAVE_KERBEROS
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/* Decrypt Kerberos blobs */
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gboolean krb_decrypt = FALSE;
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/* keytab filename */
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static const char *keytab_filename = "";
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void
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read_keytab_file_from_preferences(void)
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{
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static char *last_keytab = NULL;
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if (!krb_decrypt) {
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return;
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}
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if (keytab_filename == NULL) {
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return;
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}
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if (last_keytab && !strcmp(last_keytab, keytab_filename)) {
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return;
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}
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if (last_keytab != NULL) {
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g_free(last_keytab);
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last_keytab = NULL;
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}
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last_keytab = g_strdup(keytab_filename);
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read_keytab_file(last_keytab);
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}
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#endif /* HAVE_KERBEROS */
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#if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
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#ifdef _WIN32
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/* prevent redefinition warnings in kfw-2.5\inc\win_mac.h */
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#undef HAVE_GETADDRINFO
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#undef HAVE_SYS_TYPES_H
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#endif /* _WIN32 */
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#include <krb5.h>
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enc_key_t *enc_key_list=NULL;
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static void
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add_encryption_key(packet_info *pinfo, int keytype, int keylength, const char *keyvalue, const char *origin)
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{
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enc_key_t *new_key;
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if(pinfo->fd->flags.visited){
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return;
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}
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new_key=(enc_key_t *)g_malloc(sizeof(enc_key_t));
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g_snprintf(new_key->key_origin, KRB_MAX_ORIG_LEN, "%s learnt from frame %u",origin,pinfo->fd->num);
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new_key->fd_num = pinfo->fd->num;
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new_key->next=enc_key_list;
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enc_key_list=new_key;
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new_key->keytype=keytype;
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new_key->keylength=keylength;
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/*XXX this needs to be freed later */
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new_key->keyvalue=(char *)g_memdup(keyvalue, keylength);
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}
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#endif /* HAVE_HEIMDAL_KERBEROS || HAVE_MIT_KERBEROS */
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#if defined(HAVE_MIT_KERBEROS)
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static krb5_context krb5_ctx;
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USES_APPLE_DEPRECATED_API
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void
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read_keytab_file(const char *filename)
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{
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krb5_keytab keytab;
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krb5_error_code ret;
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krb5_keytab_entry key;
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krb5_kt_cursor cursor;
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enc_key_t *new_key;
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static gboolean first_time=TRUE;
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if (filename == NULL || filename[0] == 0) {
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return;
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}
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if(first_time){
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first_time=FALSE;
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ret = krb5_init_context(&krb5_ctx);
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if(ret && ret != KRB5_CONFIG_CANTOPEN){
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return;
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}
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}
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/* should use a file in the wireshark users dir */
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ret = krb5_kt_resolve(krb5_ctx, filename, &keytab);
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if(ret){
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fprintf(stderr, "KERBEROS ERROR: Badly formatted keytab filename :%s\n",filename);
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return;
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}
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ret = krb5_kt_start_seq_get(krb5_ctx, keytab, &cursor);
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if(ret){
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fprintf(stderr, "KERBEROS ERROR: Could not open or could not read from keytab file :%s\n",filename);
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return;
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}
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do{
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new_key=(enc_key_t *)g_malloc(sizeof(enc_key_t));
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new_key->fd_num = -1;
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new_key->next=enc_key_list;
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ret = krb5_kt_next_entry(krb5_ctx, keytab, &key, &cursor);
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if(ret==0){
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int i;
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char *pos;
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/* generate origin string, describing where this key came from */
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pos=new_key->key_origin;
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pos+=MIN(KRB_MAX_ORIG_LEN,
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g_snprintf(pos, KRB_MAX_ORIG_LEN, "keytab principal "));
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for(i=0;i<key.principal->length;i++){
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pos+=MIN(KRB_MAX_ORIG_LEN-(pos-new_key->key_origin),
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g_snprintf(pos, (gulong)(KRB_MAX_ORIG_LEN-(pos-new_key->key_origin)), "%s%s",(i?"/":""),(key.principal->data[i]).data));
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}
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pos+=MIN(KRB_MAX_ORIG_LEN-(pos-new_key->key_origin),
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g_snprintf(pos, (gulong)(KRB_MAX_ORIG_LEN-(pos-new_key->key_origin)), "@%s",key.principal->realm.data));
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*pos=0;
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new_key->keytype=key.key.enctype;
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new_key->keylength=key.key.length;
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new_key->keyvalue=(char *)g_memdup(key.key.contents, key.key.length);
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enc_key_list=new_key;
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}
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}while(ret==0);
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ret = krb5_kt_end_seq_get(krb5_ctx, keytab, &cursor);
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if(ret){
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krb5_kt_close(krb5_ctx, keytab);
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}
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}
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guint8 *
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decrypt_krb5_data(proto_tree *tree _U_, packet_info *pinfo,
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int usage,
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tvbuff_t *cryptotvb,
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int keytype,
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int *datalen)
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{
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krb5_error_code ret;
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enc_key_t *ek;
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krb5_data data = {0,0,NULL};
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krb5_keytab_entry key;
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int length = tvb_captured_length(cryptotvb);
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const guint8 *cryptotext = tvb_get_ptr(cryptotvb, 0, length);
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/* don't do anything if we are not attempting to decrypt data */
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if(!krb_decrypt || length < 1){
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return NULL;
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}
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/* make sure we have all the data we need */
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if (tvb_captured_length(cryptotvb) < tvb_reported_length(cryptotvb)) {
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return NULL;
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}
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read_keytab_file_from_preferences();
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data.data = (char *)g_malloc(length);
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data.length = length;
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for(ek=enc_key_list;ek;ek=ek->next){
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krb5_enc_data input;
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/* shortcircuit and bail out if enctypes are not matching */
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if((keytype != -1) && (ek->keytype != keytype)) {
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continue;
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}
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input.enctype = ek->keytype;
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input.ciphertext.length = length;
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input.ciphertext.data = (guint8 *)cryptotext;
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key.key.enctype=ek->keytype;
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key.key.length=ek->keylength;
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key.key.contents=ek->keyvalue;
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ret = krb5_c_decrypt(krb5_ctx, &(key.key), usage, 0, &input, &data);
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if(ret == 0){
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char *user_data;
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expert_add_info_format(pinfo, NULL, &ei_kerberos_decrypted_keytype,
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"Decrypted keytype %d in frame %u using %s",
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ek->keytype, pinfo->fd->num, ek->key_origin);
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/* return a private g_malloced blob to the caller */
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user_data=data.data;
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if (datalen) {
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*datalen = data.length;
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}
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return user_data;
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}
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}
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g_free(data.data);
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return NULL;
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}
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USES_APPLE_RST
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#elif defined(HAVE_HEIMDAL_KERBEROS)
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static krb5_context krb5_ctx;
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USES_APPLE_DEPRECATED_API
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void
|
|
read_keytab_file(const char *filename)
|
|
{
|
|
krb5_keytab keytab;
|
|
krb5_error_code ret;
|
|
krb5_keytab_entry key;
|
|
krb5_kt_cursor cursor;
|
|
enc_key_t *new_key;
|
|
static gboolean first_time=TRUE;
|
|
|
|
if (filename == NULL || filename[0] == 0) {
|
|
return;
|
|
}
|
|
|
|
if(first_time){
|
|
first_time=FALSE;
|
|
ret = krb5_init_context(&krb5_ctx);
|
|
if(ret){
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* should use a file in the wireshark users dir */
|
|
ret = krb5_kt_resolve(krb5_ctx, filename, &keytab);
|
|
if(ret){
|
|
fprintf(stderr, "KERBEROS ERROR: Could not open keytab file :%s\n",filename);
|
|
|
|
return;
|
|
}
|
|
|
|
ret = krb5_kt_start_seq_get(krb5_ctx, keytab, &cursor);
|
|
if(ret){
|
|
fprintf(stderr, "KERBEROS ERROR: Could not read from keytab file :%s\n",filename);
|
|
return;
|
|
}
|
|
|
|
do{
|
|
new_key = (enc_key_t *)g_malloc(sizeof(enc_key_t));
|
|
new_key->fd_num = -1;
|
|
new_key->next=enc_key_list;
|
|
ret = krb5_kt_next_entry(krb5_ctx, keytab, &key, &cursor);
|
|
if(ret==0){
|
|
unsigned int i;
|
|
char *pos;
|
|
|
|
/* generate origin string, describing where this key came from */
|
|
pos=new_key->key_origin;
|
|
pos+=MIN(KRB_MAX_ORIG_LEN,
|
|
g_snprintf(pos, KRB_MAX_ORIG_LEN, "keytab principal "));
|
|
for(i=0;i<key.principal->name.name_string.len;i++){
|
|
pos+=MIN(KRB_MAX_ORIG_LEN-(pos-new_key->key_origin),
|
|
g_snprintf(pos, KRB_MAX_ORIG_LEN-(pos-new_key->key_origin), "%s%s",(i?"/":""),key.principal->name.name_string.val[i]));
|
|
}
|
|
pos+=MIN(KRB_MAX_ORIG_LEN-(pos-new_key->key_origin),
|
|
g_snprintf(pos, KRB_MAX_ORIG_LEN-(pos-new_key->key_origin), "@%s",key.principal->realm));
|
|
*pos=0;
|
|
new_key->keytype=key.keyblock.keytype;
|
|
new_key->keylength=(int)key.keyblock.keyvalue.length;
|
|
new_key->keyvalue = (guint8 *)g_memdup(key.keyblock.keyvalue.data, (guint)key.keyblock.keyvalue.length);
|
|
enc_key_list=new_key;
|
|
}
|
|
}while(ret==0);
|
|
|
|
ret = krb5_kt_end_seq_get(krb5_ctx, keytab, &cursor);
|
|
if(ret){
|
|
krb5_kt_close(krb5_ctx, keytab);
|
|
}
|
|
|
|
}
|
|
USES_APPLE_RST
|
|
|
|
|
|
guint8 *
|
|
decrypt_krb5_data(proto_tree *tree _U_, packet_info *pinfo,
|
|
int usage,
|
|
tvbuff_t *cryptotvb,
|
|
int keytype,
|
|
int *datalen)
|
|
{
|
|
krb5_error_code ret;
|
|
krb5_data data;
|
|
enc_key_t *ek;
|
|
int length = tvb_captured_length(cryptotvb);
|
|
const guint8 *cryptotext = tvb_get_ptr(cryptotvb, 0, length);
|
|
|
|
/* don't do anything if we are not attempting to decrypt data */
|
|
if(!krb_decrypt){
|
|
return NULL;
|
|
}
|
|
|
|
/* make sure we have all the data we need */
|
|
if (tvb_captured_length(cryptotvb) < tvb_reported_length(cryptotvb)) {
|
|
return NULL;
|
|
}
|
|
|
|
read_keytab_file_from_preferences();
|
|
|
|
for(ek=enc_key_list;ek;ek=ek->next){
|
|
krb5_keytab_entry key;
|
|
krb5_crypto crypto;
|
|
guint8 *cryptocopy; /* workaround for pre-0.6.1 heimdal bug */
|
|
|
|
/* shortcircuit and bail out if enctypes are not matching */
|
|
if((keytype != -1) && (ek->keytype != keytype)) {
|
|
continue;
|
|
}
|
|
|
|
key.keyblock.keytype=ek->keytype;
|
|
key.keyblock.keyvalue.length=ek->keylength;
|
|
key.keyblock.keyvalue.data=ek->keyvalue;
|
|
ret = krb5_crypto_init(krb5_ctx, &(key.keyblock), (krb5_enctype)ENCTYPE_NULL, &crypto);
|
|
if(ret){
|
|
return NULL;
|
|
}
|
|
|
|
/* pre-0.6.1 versions of Heimdal would sometimes change
|
|
the cryptotext data even when the decryption failed.
|
|
This would obviously not work since we iterate over the
|
|
keys. So just give it a copy of the crypto data instead.
|
|
This has been seen for RC4-HMAC blobs.
|
|
*/
|
|
cryptocopy = (guint8 *)g_memdup(cryptotext, length);
|
|
ret = krb5_decrypt_ivec(krb5_ctx, crypto, usage,
|
|
cryptocopy, length,
|
|
&data,
|
|
NULL);
|
|
g_free(cryptocopy);
|
|
if((ret == 0) && (length>0)){
|
|
char *user_data;
|
|
|
|
expert_add_info_format(pinfo, NULL, &ei_kerberos_decrypted_keytype,
|
|
"Decrypted keytype %d in frame %u using %s",
|
|
ek->keytype, pinfo->fd->num, ek->key_origin);
|
|
|
|
krb5_crypto_destroy(krb5_ctx, crypto);
|
|
/* return a private g_malloced blob to the caller */
|
|
user_data = (char *)g_memdup(data.data, (guint)data.length);
|
|
if (datalen) {
|
|
*datalen = (int)data.length;
|
|
}
|
|
return user_data;
|
|
}
|
|
krb5_crypto_destroy(krb5_ctx, crypto);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
#elif defined (HAVE_LIBNETTLE)
|
|
|
|
#define SERVICE_KEY_SIZE (DES3_KEY_SIZE + 2)
|
|
#define KEYTYPE_DES3_CBC_MD5 5 /* Currently the only one supported */
|
|
|
|
typedef struct _service_key_t {
|
|
guint16 kvno;
|
|
int keytype;
|
|
int length;
|
|
guint8 *contents;
|
|
char origin[KRB_MAX_ORIG_LEN+1];
|
|
} service_key_t;
|
|
GSList *service_key_list = NULL;
|
|
|
|
|
|
static void
|
|
add_encryption_key(packet_info *pinfo, int keytype, int keylength, const char *keyvalue, const char *origin)
|
|
{
|
|
service_key_t *new_key;
|
|
|
|
if(pinfo->fd->flags.visited){
|
|
return;
|
|
}
|
|
|
|
new_key = g_malloc(sizeof(service_key_t));
|
|
new_key->kvno = 0;
|
|
new_key->keytype = keytype;
|
|
new_key->length = keylength;
|
|
new_key->contents = g_memdup(keyvalue, keylength);
|
|
g_snprintf(new_key->origin, KRB_MAX_ORIG_LEN, "%s learnt from frame %u", origin, pinfo->fd->num);
|
|
service_key_list = g_slist_append(service_key_list, (gpointer) new_key);
|
|
}
|
|
|
|
static void
|
|
clear_keytab(void) {
|
|
GSList *ske;
|
|
service_key_t *sk;
|
|
|
|
for(ske = service_key_list; ske != NULL; ske = g_slist_next(ske)){
|
|
sk = (service_key_t *) ske->data;
|
|
if (sk) {
|
|
g_free(sk->contents);
|
|
g_free(sk);
|
|
}
|
|
}
|
|
g_slist_free(service_key_list);
|
|
service_key_list = NULL;
|
|
}
|
|
|
|
static void
|
|
read_keytab_file(const char *service_key_file)
|
|
{
|
|
FILE *skf;
|
|
ws_statb64 st;
|
|
service_key_t *sk;
|
|
unsigned char buf[SERVICE_KEY_SIZE];
|
|
int newline_skip = 0, count = 0;
|
|
|
|
if (service_key_file != NULL && ws_stat64 (service_key_file, &st) == 0) {
|
|
|
|
/* The service key file contains raw 192-bit (24 byte) 3DES keys.
|
|
* There can be zero, one (\n), or two (\r\n) characters between
|
|
* keys. Trailing characters are ignored.
|
|
*/
|
|
|
|
/* XXX We should support the standard keytab format instead */
|
|
if (st.st_size > SERVICE_KEY_SIZE) {
|
|
if ( (st.st_size % (SERVICE_KEY_SIZE + 1) == 0) ||
|
|
(st.st_size % (SERVICE_KEY_SIZE + 1) == SERVICE_KEY_SIZE) ) {
|
|
newline_skip = 1;
|
|
} else if ( (st.st_size % (SERVICE_KEY_SIZE + 2) == 0) ||
|
|
(st.st_size % (SERVICE_KEY_SIZE + 2) == SERVICE_KEY_SIZE) ) {
|
|
newline_skip = 2;
|
|
}
|
|
}
|
|
|
|
skf = ws_fopen(service_key_file, "rb");
|
|
if (! skf) return;
|
|
|
|
while (fread(buf, SERVICE_KEY_SIZE, 1, skf) == 1) {
|
|
sk = g_malloc(sizeof(service_key_t));
|
|
sk->kvno = buf[0] << 8 | buf[1];
|
|
sk->keytype = KEYTYPE_DES3_CBC_MD5;
|
|
sk->length = DES3_KEY_SIZE;
|
|
sk->contents = g_memdup(buf + 2, DES3_KEY_SIZE);
|
|
g_snprintf(sk->origin, KRB_MAX_ORIG_LEN, "3DES service key file, key #%d, offset %ld", count, ftell(skf));
|
|
service_key_list = g_slist_append(service_key_list, (gpointer) sk);
|
|
fseek(skf, newline_skip, SEEK_CUR);
|
|
count++;
|
|
}
|
|
fclose(skf);
|
|
}
|
|
}
|
|
|
|
#define CONFOUNDER_PLUS_CHECKSUM 24
|
|
|
|
guint8 *
|
|
decrypt_krb5_data(proto_tree *tree, packet_info *pinfo,
|
|
int _U_ usage,
|
|
tvbuff_t *cryptotvb,
|
|
int keytype,
|
|
int *datalen)
|
|
{
|
|
tvbuff_t *encr_tvb;
|
|
guint8 *decrypted_data = NULL, *plaintext = NULL;
|
|
guint8 cls;
|
|
gboolean pc;
|
|
guint32 tag, item_len, data_len;
|
|
int id_offset, offset;
|
|
guint8 key[DES3_KEY_SIZE];
|
|
guint8 initial_vector[DES_BLOCK_SIZE];
|
|
md5_state_t md5s;
|
|
md5_byte_t digest[16];
|
|
md5_byte_t zero_fill[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
|
|
md5_byte_t confounder[8];
|
|
gboolean ind;
|
|
GSList *ske;
|
|
service_key_t *sk;
|
|
struct des3_ctx ctx;
|
|
int length = tvb_captured_length(cryptotvb);
|
|
const guint8 *cryptotext = tvb_get_ptr(cryptotvb, 0, length);
|
|
|
|
|
|
/* don't do anything if we are not attempting to decrypt data */
|
|
if(!krb_decrypt){
|
|
return NULL;
|
|
}
|
|
|
|
/* make sure we have all the data we need */
|
|
if (tvb_captured_length(cryptotvb) < tvb_reported_length(cryptotvb)) {
|
|
return NULL;
|
|
}
|
|
|
|
if (keytype != KEYTYPE_DES3_CBC_MD5 || service_key_list == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
decrypted_data = g_malloc(length);
|
|
for(ske = service_key_list; ske != NULL; ske = g_slist_next(ske)){
|
|
gboolean do_continue = FALSE;
|
|
sk = (service_key_t *) ske->data;
|
|
|
|
des_fix_parity(DES3_KEY_SIZE, key, sk->contents);
|
|
|
|
md5_init(&md5s);
|
|
memset(initial_vector, 0, DES_BLOCK_SIZE);
|
|
des3_set_key(&ctx, key);
|
|
cbc_decrypt(&ctx, des3_decrypt, DES_BLOCK_SIZE, initial_vector,
|
|
length, decrypted_data, cryptotext);
|
|
encr_tvb = tvb_new_real_data(decrypted_data, length, length);
|
|
|
|
tvb_memcpy(encr_tvb, confounder, 0, 8);
|
|
|
|
/* We have to pull the decrypted data length from the decrypted
|
|
* content. If the key doesn't match or we otherwise get garbage,
|
|
* an exception may get thrown while decoding the ASN.1 header.
|
|
* Catch it, just in case.
|
|
*/
|
|
TRY {
|
|
id_offset = get_ber_identifier(encr_tvb, CONFOUNDER_PLUS_CHECKSUM, &cls, &pc, &tag);
|
|
offset = get_ber_length(encr_tvb, id_offset, &item_len, &ind);
|
|
}
|
|
CATCH_BOUNDS_ERRORS {
|
|
tvb_free(encr_tvb);
|
|
do_continue = TRUE;
|
|
}
|
|
ENDTRY;
|
|
|
|
if (do_continue) continue;
|
|
|
|
data_len = item_len + offset - CONFOUNDER_PLUS_CHECKSUM;
|
|
if ((int) item_len + offset > length) {
|
|
tvb_free(encr_tvb);
|
|
continue;
|
|
}
|
|
|
|
md5_append(&md5s, confounder, 8);
|
|
md5_append(&md5s, zero_fill, 16);
|
|
md5_append(&md5s, decrypted_data + CONFOUNDER_PLUS_CHECKSUM, data_len);
|
|
md5_finish(&md5s, digest);
|
|
|
|
if (tvb_memeql (encr_tvb, 8, digest, 16) == 0) {
|
|
plaintext = g_malloc(data_len);
|
|
tvb_memcpy(encr_tvb, plaintext, CONFOUNDER_PLUS_CHECKSUM, data_len);
|
|
tvb_free(encr_tvb);
|
|
|
|
if (datalen) {
|
|
*datalen = data_len;
|
|
}
|
|
g_free(decrypted_data);
|
|
return(plaintext);
|
|
}
|
|
tvb_free(encr_tvb);
|
|
}
|
|
|
|
g_free(decrypted_data);
|
|
return NULL;
|
|
}
|
|
|
|
#endif /* HAVE_MIT_KERBEROS / HAVE_HEIMDAL_KERBEROS / HAVE_LIBNETTLE */
|
|
|
|
#define INET6_ADDRLEN 16
|
|
|
|
/* TCP Record Mark */
|
|
#define KRB_RM_RESERVED 0x80000000U
|
|
#define KRB_RM_RECLEN 0x7fffffffU
|
|
|
|
#define KRB5_MSG_TICKET 1 /* Ticket */
|
|
#define KRB5_MSG_AUTHENTICATOR 2 /* Authenticator */
|
|
#define KRB5_MSG_ENC_TICKET_PART 3 /* EncTicketPart */
|
|
#define KRB5_MSG_AS_REQ 10 /* AS-REQ type */
|
|
#define KRB5_MSG_AS_REP 11 /* AS-REP type */
|
|
#define KRB5_MSG_TGS_REQ 12 /* TGS-REQ type */
|
|
#define KRB5_MSG_TGS_REP 13 /* TGS-REP type */
|
|
#define KRB5_MSG_AP_REQ 14 /* AP-REQ type */
|
|
#define KRB5_MSG_AP_REP 15 /* AP-REP type */
|
|
|
|
#define KRB5_MSG_SAFE 20 /* KRB-SAFE type */
|
|
#define KRB5_MSG_PRIV 21 /* KRB-PRIV type */
|
|
#define KRB5_MSG_CRED 22 /* KRB-CRED type */
|
|
#define KRB5_MSG_ENC_AS_REP_PART 25 /* EncASRepPart */
|
|
#define KRB5_MSG_ENC_TGS_REP_PART 26 /* EncTGSRepPart */
|
|
#define KRB5_MSG_ENC_AP_REP_PART 27 /* EncAPRepPart */
|
|
#define KRB5_MSG_ENC_KRB_PRIV_PART 28 /* EncKrbPrivPart */
|
|
#define KRB5_MSG_ENC_KRB_CRED_PART 29 /* EncKrbCredPart */
|
|
#define KRB5_MSG_ERROR 30 /* KRB-ERROR type */
|
|
|
|
/* encryption type constants */
|
|
#define KRB5_ENCTYPE_NULL 0
|
|
#define KRB5_ENCTYPE_DES_CBC_CRC 1
|
|
#define KRB5_ENCTYPE_DES_CBC_MD4 2
|
|
#define KRB5_ENCTYPE_DES_CBC_MD5 3
|
|
#define KRB5_ENCTYPE_DES_CBC_RAW 4
|
|
#define KRB5_ENCTYPE_DES3_CBC_SHA 5
|
|
#define KRB5_ENCTYPE_DES3_CBC_RAW 6
|
|
#define KRB5_ENCTYPE_DES_HMAC_SHA1 8
|
|
#define KRB5_ENCTYPE_DSA_SHA1_CMS 9
|
|
#define KRB5_ENCTYPE_RSA_MD5_CMS 10
|
|
#define KRB5_ENCTYPE_RSA_SHA1_CMS 11
|
|
#define KRB5_ENCTYPE_RC2_CBC_ENV 12
|
|
#define KRB5_ENCTYPE_RSA_ENV 13
|
|
#define KRB5_ENCTYPE_RSA_ES_OEAP_ENV 14
|
|
#define KRB5_ENCTYPE_DES_EDE3_CBC_ENV 15
|
|
#define KRB5_ENCTYPE_DES3_CBC_SHA1 16
|
|
#define KRB5_ENCTYPE_AES128_CTS_HMAC_SHA1_96 17
|
|
#define KRB5_ENCTYPE_AES256_CTS_HMAC_SHA1_96 18
|
|
#define KRB5_ENCTYPE_DES_CBC_MD5_NT 20
|
|
#define KERB_ENCTYPE_RC4_HMAC 23
|
|
#define KERB_ENCTYPE_RC4_HMAC_EXP 24
|
|
#define KRB5_ENCTYPE_UNKNOWN 0x1ff
|
|
#define KRB5_ENCTYPE_LOCAL_DES3_HMAC_SHA1 0x7007
|
|
#define KRB5_ENCTYPE_RC4_PLAIN_EXP 0xffffff73
|
|
#define KRB5_ENCTYPE_RC4_PLAIN 0xffffff74
|
|
#define KRB5_ENCTYPE_RC4_PLAIN_OLD_EXP 0xffffff78
|
|
#define KRB5_ENCTYPE_RC4_HMAC_OLD_EXP 0xffffff79
|
|
#define KRB5_ENCTYPE_RC4_PLAIN_OLD 0xffffff7a
|
|
#define KRB5_ENCTYPE_RC4_HMAC_OLD 0xffffff7b
|
|
#define KRB5_ENCTYPE_DES_PLAIN 0xffffff7c
|
|
#define KRB5_ENCTYPE_RC4_SHA 0xffffff7d
|
|
#define KRB5_ENCTYPE_RC4_LM 0xffffff7e
|
|
#define KRB5_ENCTYPE_RC4_PLAIN2 0xffffff7f
|
|
#define KRB5_ENCTYPE_RC4_MD4 0xffffff80
|
|
|
|
/* checksum types */
|
|
#define KRB5_CHKSUM_NONE 0
|
|
#define KRB5_CHKSUM_CRC32 1
|
|
#define KRB5_CHKSUM_MD4 2
|
|
#define KRB5_CHKSUM_KRB_DES_MAC 4
|
|
#define KRB5_CHKSUM_KRB_DES_MAC_K 5
|
|
#define KRB5_CHKSUM_MD5 7
|
|
#define KRB5_CHKSUM_MD5_DES 8
|
|
/* the following four come from packetcable */
|
|
#define KRB5_CHKSUM_MD5_DES3 9
|
|
#define KRB5_CHKSUM_HMAC_SHA1_DES3_KD 12
|
|
#define KRB5_CHKSUM_HMAC_SHA1_DES3 13
|
|
#define KRB5_CHKSUM_SHA1_UNKEYED 14
|
|
#define KRB5_CHKSUM_HMAC_MD5 0xffffff76
|
|
#define KRB5_CHKSUM_MD5_HMAC 0xffffff77
|
|
#define KRB5_CHKSUM_RC4_MD5 0xffffff78
|
|
#define KRB5_CHKSUM_MD25 0xffffff79
|
|
#define KRB5_CHKSUM_DES_MAC_MD5 0xffffff7a
|
|
#define KRB5_CHKSUM_DES_MAC 0xffffff7b
|
|
#define KRB5_CHKSUM_REAL_CRC32 0xffffff7c
|
|
#define KRB5_CHKSUM_SHA1 0xffffff7d
|
|
#define KRB5_CHKSUM_LM 0xffffff7e
|
|
#define KRB5_CHKSUM_GSSAPI 0x8003
|
|
|
|
/*
|
|
* For KERB_ENCTYPE_RC4_HMAC and KERB_ENCTYPE_RC4_HMAC_EXP, see
|
|
*
|
|
* http://www.ietf.org/internet-drafts/draft-brezak-win2k-krb-rc4-hmac-04.txt
|
|
*
|
|
* unless it's expired.
|
|
*/
|
|
|
|
/* pre-authentication type constants */
|
|
#define KRB5_PA_TGS_REQ 1
|
|
#define KRB5_PA_ENC_TIMESTAMP 2
|
|
#define KRB5_PA_PW_SALT 3
|
|
#define KRB5_PA_ENC_ENCKEY 4
|
|
#define KRB5_PA_ENC_UNIX_TIME 5
|
|
#define KRB5_PA_ENC_SANDIA_SECURID 6
|
|
#define KRB5_PA_SESAME 7
|
|
#define KRB5_PA_OSF_DCE 8
|
|
#define KRB5_PA_CYBERSAFE_SECUREID 9
|
|
#define KRB5_PA_AFS3_SALT 10
|
|
#define KRB5_PA_ENCTYPE_INFO 11
|
|
#define KRB5_PA_SAM_CHALLENGE 12
|
|
#define KRB5_PA_SAM_RESPONSE 13
|
|
#define KRB5_PA_PK_AS_REQ 14
|
|
#define KRB5_PA_PK_AS_REP 15
|
|
#define KRB5_PA_DASS 16
|
|
#define KRB5_PA_ENCTYPE_INFO2 19
|
|
#define KRB5_PA_USE_SPECIFIED_KVNO 20
|
|
#define KRB5_PA_SAM_REDIRECT 21
|
|
#define KRB5_PA_GET_FROM_TYPED_DATA 22
|
|
#define KRB5_PA_SAM_ETYPE_INFO 23
|
|
#define KRB5_PA_ALT_PRINC 24
|
|
#define KRB5_PA_SAM_CHALLENGE2 30
|
|
#define KRB5_PA_SAM_RESPONSE2 31
|
|
#define KRB5_TD_PKINIT_CMS_CERTIFICATES 101
|
|
#define KRB5_TD_KRB_PRINCIPAL 102
|
|
#define KRB5_TD_KRB_REALM 103
|
|
#define KRB5_TD_TRUSTED_CERTIFIERS 104
|
|
#define KRB5_TD_CERTIFICATE_INDEX 105
|
|
#define KRB5_TD_APP_DEFINED_ERROR 106
|
|
#define KRB5_TD_REQ_NONCE 107
|
|
#define KRB5_TD_REQ_SEQ 108
|
|
/* preauthentication types >127 (i.e. negative ones) are app specific.
|
|
however since Microsoft is the dominant(only?) user of types in this range
|
|
we also treat the type as unsigned.
|
|
*/
|
|
#define KRB5_PA_PAC_REQUEST 128 /* (Microsoft extension) */
|
|
#define KRB5_PA_FOR_USER 129 /* Impersonation (Microsoft extension) See [MS-SFU]. XXX - replaced by KRB5_PA_S4U2SELF */
|
|
#define KRB5_PA_S4U2SELF 129
|
|
|
|
#define KRB5_PA_PROV_SRV_LOCATION 0xffffffff /* (gint32)0xFF) packetcable stuff */
|
|
/* Principal name-type */
|
|
#define KRB5_NT_UNKNOWN 0
|
|
#define KRB5_NT_PRINCIPAL 1
|
|
#define KRB5_NT_SRV_INST 2
|
|
#define KRB5_NT_SRV_HST 3
|
|
#define KRB5_NT_SRV_XHST 4
|
|
#define KRB5_NT_UID 5
|
|
#define KRB5_NT_X500_PRINCIPAL 6
|
|
#define KRB5_NT_SMTP_NAME 7
|
|
#define KRB5_NT_ENTERPRISE 10
|
|
|
|
/*
|
|
* MS specific name types, from
|
|
*
|
|
* http://msdn.microsoft.com/library/en-us/security/security/kerb_external_name.asp
|
|
*/
|
|
#define KRB5_NT_MS_PRINCIPAL -128
|
|
#define KRB5_NT_MS_PRINCIPAL_AND_SID -129
|
|
#define KRB5_NT_ENT_PRINCIPAL_AND_SID -130
|
|
#define KRB5_NT_PRINCIPAL_AND_SID -131
|
|
#define KRB5_NT_SRV_INST_AND_SID -132
|
|
|
|
/* error table constants */
|
|
/* I prefixed the krb5_err.et constant names with KRB5_ET_ for these */
|
|
#define KRB5_ET_KRB5KDC_ERR_NONE 0
|
|
#define KRB5_ET_KRB5KDC_ERR_NAME_EXP 1
|
|
#define KRB5_ET_KRB5KDC_ERR_SERVICE_EXP 2
|
|
#define KRB5_ET_KRB5KDC_ERR_BAD_PVNO 3
|
|
#define KRB5_ET_KRB5KDC_ERR_C_OLD_MAST_KVNO 4
|
|
#define KRB5_ET_KRB5KDC_ERR_S_OLD_MAST_KVNO 5
|
|
#define KRB5_ET_KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN 6
|
|
#define KRB5_ET_KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN 7
|
|
#define KRB5_ET_KRB5KDC_ERR_PRINCIPAL_NOT_UNIQUE 8
|
|
#define KRB5_ET_KRB5KDC_ERR_NULL_KEY 9
|
|
#define KRB5_ET_KRB5KDC_ERR_CANNOT_POSTDATE 10
|
|
#define KRB5_ET_KRB5KDC_ERR_NEVER_VALID 11
|
|
#define KRB5_ET_KRB5KDC_ERR_POLICY 12
|
|
#define KRB5_ET_KRB5KDC_ERR_BADOPTION 13
|
|
#define KRB5_ET_KRB5KDC_ERR_ETYPE_NOSUPP 14
|
|
#define KRB5_ET_KRB5KDC_ERR_SUMTYPE_NOSUPP 15
|
|
#define KRB5_ET_KRB5KDC_ERR_PADATA_TYPE_NOSUPP 16
|
|
#define KRB5_ET_KRB5KDC_ERR_TRTYPE_NOSUPP 17
|
|
#define KRB5_ET_KRB5KDC_ERR_CLIENT_REVOKED 18
|
|
#define KRB5_ET_KRB5KDC_ERR_SERVICE_REVOKED 19
|
|
#define KRB5_ET_KRB5KDC_ERR_TGT_REVOKED 20
|
|
#define KRB5_ET_KRB5KDC_ERR_CLIENT_NOTYET 21
|
|
#define KRB5_ET_KRB5KDC_ERR_SERVICE_NOTYET 22
|
|
#define KRB5_ET_KRB5KDC_ERR_KEY_EXP 23
|
|
#define KRB5_ET_KRB5KDC_ERR_PREAUTH_FAILED 24
|
|
#define KRB5_ET_KRB5KDC_ERR_PREAUTH_REQUIRED 25
|
|
#define KRB5_ET_KRB5KDC_ERR_SERVER_NOMATCH 26
|
|
#define KRB5_ET_KRB5KDC_ERR_MUST_USE_USER2USER 27
|
|
#define KRB5_ET_KRB5KDC_ERR_PATH_NOT_ACCEPTED 28
|
|
#define KRB5_ET_KRB5KDC_ERR_SVC_UNAVAILABLE 29
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_BAD_INTEGRITY 31
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_TKT_EXPIRED 32
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_TKT_NYV 33
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_REPEAT 34
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_NOT_US 35
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_BADMATCH 36
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_SKEW 37
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_BADADDR 38
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_BADVERSION 39
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_MSG_TYPE 40
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_MODIFIED 41
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_BADORDER 42
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_ILL_CR_TKT 43
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_BADKEYVER 44
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_NOKEY 45
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_MUT_FAIL 46
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_BADDIRECTION 47
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_METHOD 48
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_BADSEQ 49
|
|
#define KRB5_ET_KRB5KRB_AP_ERR_INAPP_CKSUM 50
|
|
#define KRB5_ET_KRB5KDC_AP_PATH_NOT_ACCEPTED 51
|
|
#define KRB5_ET_KRB5KRB_ERR_RESPONSE_TOO_BIG 52
|
|
#define KRB5_ET_KRB5KRB_ERR_GENERIC 60
|
|
#define KRB5_ET_KRB5KRB_ERR_FIELD_TOOLONG 61
|
|
#define KRB5_ET_KDC_ERROR_CLIENT_NOT_TRUSTED 62
|
|
#define KRB5_ET_KDC_ERROR_KDC_NOT_TRUSTED 63
|
|
#define KRB5_ET_KDC_ERROR_INVALID_SIG 64
|
|
#define KRB5_ET_KDC_ERR_KEY_TOO_WEAK 65
|
|
#define KRB5_ET_KDC_ERR_CERTIFICATE_MISMATCH 66
|
|
#define KRB5_ET_KRB_AP_ERR_NO_TGT 67
|
|
#define KRB5_ET_KDC_ERR_WRONG_REALM 68
|
|
#define KRB5_ET_KRB_AP_ERR_USER_TO_USER_REQUIRED 69
|
|
#define KRB5_ET_KDC_ERR_CANT_VERIFY_CERTIFICATE 70
|
|
#define KRB5_ET_KDC_ERR_INVALID_CERTIFICATE 71
|
|
#define KRB5_ET_KDC_ERR_REVOKED_CERTIFICATE 72
|
|
#define KRB5_ET_KDC_ERR_REVOCATION_STATUS_UNKNOWN 73
|
|
#define KRB5_ET_KDC_ERR_REVOCATION_STATUS_UNAVAILABLE 74
|
|
#define KRB5_ET_KDC_ERR_CLIENT_NAME_MISMATCH 75
|
|
#define KRB5_ET_KDC_ERR_KDC_NAME_MISMATCH 76
|
|
|
|
static const value_string krb5_error_codes[] = {
|
|
{ KRB5_ET_KRB5KDC_ERR_NONE, "KRB5KDC_ERR_NONE" },
|
|
{ KRB5_ET_KRB5KDC_ERR_NAME_EXP, "KRB5KDC_ERR_NAME_EXP" },
|
|
{ KRB5_ET_KRB5KDC_ERR_SERVICE_EXP, "KRB5KDC_ERR_SERVICE_EXP" },
|
|
{ KRB5_ET_KRB5KDC_ERR_BAD_PVNO, "KRB5KDC_ERR_BAD_PVNO" },
|
|
{ KRB5_ET_KRB5KDC_ERR_C_OLD_MAST_KVNO, "KRB5KDC_ERR_C_OLD_MAST_KVNO" },
|
|
{ KRB5_ET_KRB5KDC_ERR_S_OLD_MAST_KVNO, "KRB5KDC_ERR_S_OLD_MAST_KVNO" },
|
|
{ KRB5_ET_KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN, "KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN" },
|
|
{ KRB5_ET_KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN, "KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN" },
|
|
{ KRB5_ET_KRB5KDC_ERR_PRINCIPAL_NOT_UNIQUE, "KRB5KDC_ERR_PRINCIPAL_NOT_UNIQUE" },
|
|
{ KRB5_ET_KRB5KDC_ERR_NULL_KEY, "KRB5KDC_ERR_NULL_KEY" },
|
|
{ KRB5_ET_KRB5KDC_ERR_CANNOT_POSTDATE, "KRB5KDC_ERR_CANNOT_POSTDATE" },
|
|
{ KRB5_ET_KRB5KDC_ERR_NEVER_VALID, "KRB5KDC_ERR_NEVER_VALID" },
|
|
{ KRB5_ET_KRB5KDC_ERR_POLICY, "KRB5KDC_ERR_POLICY" },
|
|
{ KRB5_ET_KRB5KDC_ERR_BADOPTION, "KRB5KDC_ERR_BADOPTION" },
|
|
{ KRB5_ET_KRB5KDC_ERR_ETYPE_NOSUPP, "KRB5KDC_ERR_ETYPE_NOSUPP" },
|
|
{ KRB5_ET_KRB5KDC_ERR_SUMTYPE_NOSUPP, "KRB5KDC_ERR_SUMTYPE_NOSUPP" },
|
|
{ KRB5_ET_KRB5KDC_ERR_PADATA_TYPE_NOSUPP, "KRB5KDC_ERR_PADATA_TYPE_NOSUPP" },
|
|
{ KRB5_ET_KRB5KDC_ERR_TRTYPE_NOSUPP, "KRB5KDC_ERR_TRTYPE_NOSUPP" },
|
|
{ KRB5_ET_KRB5KDC_ERR_CLIENT_REVOKED, "KRB5KDC_ERR_CLIENT_REVOKED" },
|
|
{ KRB5_ET_KRB5KDC_ERR_SERVICE_REVOKED, "KRB5KDC_ERR_SERVICE_REVOKED" },
|
|
{ KRB5_ET_KRB5KDC_ERR_TGT_REVOKED, "KRB5KDC_ERR_TGT_REVOKED" },
|
|
{ KRB5_ET_KRB5KDC_ERR_CLIENT_NOTYET, "KRB5KDC_ERR_CLIENT_NOTYET" },
|
|
{ KRB5_ET_KRB5KDC_ERR_SERVICE_NOTYET, "KRB5KDC_ERR_SERVICE_NOTYET" },
|
|
{ KRB5_ET_KRB5KDC_ERR_KEY_EXP, "KRB5KDC_ERR_KEY_EXP" },
|
|
{ KRB5_ET_KRB5KDC_ERR_PREAUTH_FAILED, "KRB5KDC_ERR_PREAUTH_FAILED" },
|
|
{ KRB5_ET_KRB5KDC_ERR_PREAUTH_REQUIRED, "KRB5KDC_ERR_PREAUTH_REQUIRED" },
|
|
{ KRB5_ET_KRB5KDC_ERR_SERVER_NOMATCH, "KRB5KDC_ERR_SERVER_NOMATCH" },
|
|
{ KRB5_ET_KRB5KDC_ERR_MUST_USE_USER2USER, "KRB5KDC_ERR_MUST_USE_USER2USER" },
|
|
{ KRB5_ET_KRB5KDC_ERR_PATH_NOT_ACCEPTED, "KRB5KDC_ERR_PATH_NOT_ACCEPTED" },
|
|
{ KRB5_ET_KRB5KDC_ERR_SVC_UNAVAILABLE, "KRB5KDC_ERR_SVC_UNAVAILABLE" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_BAD_INTEGRITY, "KRB5KRB_AP_ERR_BAD_INTEGRITY" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_TKT_EXPIRED, "KRB5KRB_AP_ERR_TKT_EXPIRED" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_TKT_NYV, "KRB5KRB_AP_ERR_TKT_NYV" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_REPEAT, "KRB5KRB_AP_ERR_REPEAT" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_NOT_US, "KRB5KRB_AP_ERR_NOT_US" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_BADMATCH, "KRB5KRB_AP_ERR_BADMATCH" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_SKEW, "KRB5KRB_AP_ERR_SKEW" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_BADADDR, "KRB5KRB_AP_ERR_BADADDR" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_BADVERSION, "KRB5KRB_AP_ERR_BADVERSION" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_MSG_TYPE, "KRB5KRB_AP_ERR_MSG_TYPE" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_MODIFIED, "KRB5KRB_AP_ERR_MODIFIED" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_BADORDER, "KRB5KRB_AP_ERR_BADORDER" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_ILL_CR_TKT, "KRB5KRB_AP_ERR_ILL_CR_TKT" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_BADKEYVER, "KRB5KRB_AP_ERR_BADKEYVER" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_NOKEY, "KRB5KRB_AP_ERR_NOKEY" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_MUT_FAIL, "KRB5KRB_AP_ERR_MUT_FAIL" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_BADDIRECTION, "KRB5KRB_AP_ERR_BADDIRECTION" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_METHOD, "KRB5KRB_AP_ERR_METHOD" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_BADSEQ, "KRB5KRB_AP_ERR_BADSEQ" },
|
|
{ KRB5_ET_KRB5KRB_AP_ERR_INAPP_CKSUM, "KRB5KRB_AP_ERR_INAPP_CKSUM" },
|
|
{ KRB5_ET_KRB5KDC_AP_PATH_NOT_ACCEPTED, "KRB5KDC_AP_PATH_NOT_ACCEPTED" },
|
|
{ KRB5_ET_KRB5KRB_ERR_RESPONSE_TOO_BIG, "KRB5KRB_ERR_RESPONSE_TOO_BIG"},
|
|
{ KRB5_ET_KRB5KRB_ERR_GENERIC, "KRB5KRB_ERR_GENERIC" },
|
|
{ KRB5_ET_KRB5KRB_ERR_FIELD_TOOLONG, "KRB5KRB_ERR_FIELD_TOOLONG" },
|
|
{ KRB5_ET_KDC_ERROR_CLIENT_NOT_TRUSTED, "KDC_ERROR_CLIENT_NOT_TRUSTED" },
|
|
{ KRB5_ET_KDC_ERROR_KDC_NOT_TRUSTED, "KDC_ERROR_KDC_NOT_TRUSTED" },
|
|
{ KRB5_ET_KDC_ERROR_INVALID_SIG, "KDC_ERROR_INVALID_SIG" },
|
|
{ KRB5_ET_KDC_ERR_KEY_TOO_WEAK, "KDC_ERR_KEY_TOO_WEAK" },
|
|
{ KRB5_ET_KDC_ERR_CERTIFICATE_MISMATCH, "KDC_ERR_CERTIFICATE_MISMATCH" },
|
|
{ KRB5_ET_KRB_AP_ERR_NO_TGT, "KRB_AP_ERR_NO_TGT" },
|
|
{ KRB5_ET_KDC_ERR_WRONG_REALM, "KDC_ERR_WRONG_REALM" },
|
|
{ KRB5_ET_KRB_AP_ERR_USER_TO_USER_REQUIRED, "KRB_AP_ERR_USER_TO_USER_REQUIRED" },
|
|
{ KRB5_ET_KDC_ERR_CANT_VERIFY_CERTIFICATE, "KDC_ERR_CANT_VERIFY_CERTIFICATE" },
|
|
{ KRB5_ET_KDC_ERR_INVALID_CERTIFICATE, "KDC_ERR_INVALID_CERTIFICATE" },
|
|
{ KRB5_ET_KDC_ERR_REVOKED_CERTIFICATE, "KDC_ERR_REVOKED_CERTIFICATE" },
|
|
{ KRB5_ET_KDC_ERR_REVOCATION_STATUS_UNKNOWN, "KDC_ERR_REVOCATION_STATUS_UNKNOWN" },
|
|
{ KRB5_ET_KDC_ERR_REVOCATION_STATUS_UNAVAILABLE, "KDC_ERR_REVOCATION_STATUS_UNAVAILABLE" },
|
|
{ KRB5_ET_KDC_ERR_CLIENT_NAME_MISMATCH, "KDC_ERR_CLIENT_NAME_MISMATCH" },
|
|
{ KRB5_ET_KDC_ERR_KDC_NAME_MISMATCH, "KDC_ERR_KDC_NAME_MISMATCH" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
|
|
#define PAC_LOGON_INFO 1
|
|
#define PAC_CREDENTIAL_TYPE 2
|
|
#define PAC_SERVER_CHECKSUM 6
|
|
#define PAC_PRIVSVR_CHECKSUM 7
|
|
#define PAC_CLIENT_INFO_TYPE 10
|
|
#define PAC_S4U_DELEGATION_INFO 11
|
|
#define PAC_UPN_DNS_INFO 12
|
|
static const value_string w2k_pac_types[] = {
|
|
{ PAC_LOGON_INFO , "Logon Info" },
|
|
{ PAC_CREDENTIAL_TYPE , "Credential Type" },
|
|
{ PAC_SERVER_CHECKSUM , "Server Checksum" },
|
|
{ PAC_PRIVSVR_CHECKSUM , "Privsvr Checksum" },
|
|
{ PAC_CLIENT_INFO_TYPE , "Client Info Type" },
|
|
{ PAC_S4U_DELEGATION_INFO, "S4U Delegation Info" },
|
|
{ PAC_UPN_DNS_INFO , "UPN DNS Info" },
|
|
{ 0, NULL },
|
|
};
|
|
|
|
#if 0
|
|
static const value_string krb5_princ_types[] = {
|
|
{ KRB5_NT_UNKNOWN , "Unknown" },
|
|
{ KRB5_NT_PRINCIPAL , "Principal" },
|
|
{ KRB5_NT_SRV_INST , "Service and Instance" },
|
|
{ KRB5_NT_SRV_HST , "Service and Host" },
|
|
{ KRB5_NT_SRV_XHST , "Service and Host Components" },
|
|
{ KRB5_NT_UID , "Unique ID" },
|
|
{ KRB5_NT_X500_PRINCIPAL , "Encoded X.509 Distinguished Name" },
|
|
{ KRB5_NT_SMTP_NAME , "SMTP Name" },
|
|
{ KRB5_NT_ENTERPRISE , "Enterprise Name" },
|
|
{ KRB5_NT_MS_PRINCIPAL , "NT 4.0 style name (MS specific)" },
|
|
{ KRB5_NT_MS_PRINCIPAL_AND_SID , "NT 4.0 style name with SID (MS specific)"},
|
|
{ KRB5_NT_ENT_PRINCIPAL_AND_SID, "UPN and SID (MS specific)"},
|
|
{ KRB5_NT_PRINCIPAL_AND_SID , "Principal name and SID (MS specific)"},
|
|
{ KRB5_NT_SRV_INST_AND_SID , "SPN and SID (MS specific)"},
|
|
{ 0 , NULL },
|
|
};
|
|
#endif
|
|
|
|
static const value_string krb5_preauthentication_types[] = {
|
|
{ KRB5_PA_TGS_REQ , "PA-TGS-REQ" },
|
|
{ KRB5_PA_ENC_TIMESTAMP , "PA-ENC-TIMESTAMP" },
|
|
{ KRB5_PA_PW_SALT , "PA-PW-SALT" },
|
|
{ KRB5_PA_ENC_ENCKEY , "PA-ENC-ENCKEY" },
|
|
{ KRB5_PA_ENC_UNIX_TIME , "PA-ENC-UNIX-TIME" },
|
|
{ KRB5_PA_ENC_SANDIA_SECURID , "PA-PW-SALT" },
|
|
{ KRB5_PA_SESAME , "PA-SESAME" },
|
|
{ KRB5_PA_OSF_DCE , "PA-OSF-DCE" },
|
|
{ KRB5_PA_CYBERSAFE_SECUREID , "PA-CYBERSAFE-SECURID" },
|
|
{ KRB5_PA_AFS3_SALT , "PA-AFS3-SALT" },
|
|
{ KRB5_PA_ENCTYPE_INFO , "PA-ENCTYPE-INFO" },
|
|
{ KRB5_PA_ENCTYPE_INFO2 , "PA-ENCTYPE-INFO2" },
|
|
{ KRB5_PA_SAM_CHALLENGE , "PA-SAM-CHALLENGE" },
|
|
{ KRB5_PA_SAM_RESPONSE , "PA-SAM-RESPONSE" },
|
|
{ KRB5_PA_PK_AS_REQ , "PA-PK-AS-REQ" },
|
|
{ KRB5_PA_PK_AS_REP , "PA-PK-AS-REP" },
|
|
{ KRB5_PA_DASS , "PA-DASS" },
|
|
{ KRB5_PA_USE_SPECIFIED_KVNO , "PA-USE-SPECIFIED-KVNO" },
|
|
{ KRB5_PA_SAM_REDIRECT , "PA-SAM-REDIRECT" },
|
|
{ KRB5_PA_GET_FROM_TYPED_DATA , "PA-GET-FROM-TYPED-DATA" },
|
|
{ KRB5_PA_SAM_ETYPE_INFO , "PA-SAM-ETYPE-INFO" },
|
|
{ KRB5_PA_ALT_PRINC , "PA-ALT-PRINC" },
|
|
{ KRB5_PA_SAM_CHALLENGE2 , "PA-SAM-CHALLENGE2" },
|
|
{ KRB5_PA_SAM_RESPONSE2 , "PA-SAM-RESPONSE2" },
|
|
{ KRB5_TD_PKINIT_CMS_CERTIFICATES, "TD-PKINIT-CMS-CERTIFICATES" },
|
|
{ KRB5_TD_KRB_PRINCIPAL , "TD-KRB-PRINCIPAL" },
|
|
{ KRB5_TD_KRB_REALM , "TD-KRB-REALM" },
|
|
{ KRB5_TD_TRUSTED_CERTIFIERS , "TD-TRUSTED-CERTIFIERS" },
|
|
{ KRB5_TD_CERTIFICATE_INDEX , "TD-CERTIFICATE-INDEX" },
|
|
{ KRB5_TD_APP_DEFINED_ERROR , "TD-APP-DEFINED-ERROR" },
|
|
{ KRB5_TD_REQ_NONCE , "TD-REQ-NONCE" },
|
|
{ KRB5_TD_REQ_SEQ , "TD-REQ-SEQ" },
|
|
{ KRB5_PA_PAC_REQUEST , "PA-PAC-REQUEST" },
|
|
{ KRB5_PA_FOR_USER , "PA-FOR-USER" },
|
|
{ KRB5_PA_PROV_SRV_LOCATION , "PA-PROV-SRV-LOCATION" },
|
|
{ 0 , NULL },
|
|
};
|
|
|
|
#if 0
|
|
static const value_string krb5_encryption_types[] = {
|
|
{ KRB5_ENCTYPE_NULL , "NULL" },
|
|
{ KRB5_ENCTYPE_DES_CBC_CRC , "des-cbc-crc" },
|
|
{ KRB5_ENCTYPE_DES_CBC_MD4 , "des-cbc-md4" },
|
|
{ KRB5_ENCTYPE_DES_CBC_MD5 , "des-cbc-md5" },
|
|
{ KRB5_ENCTYPE_DES_CBC_RAW , "des-cbc-raw" },
|
|
{ KRB5_ENCTYPE_DES3_CBC_SHA , "des3-cbc-sha" },
|
|
{ KRB5_ENCTYPE_DES3_CBC_RAW , "des3-cbc-raw" },
|
|
{ KRB5_ENCTYPE_DES_HMAC_SHA1 , "des-hmac-sha1" },
|
|
{ KRB5_ENCTYPE_DSA_SHA1_CMS , "dsa-sha1-cms" },
|
|
{ KRB5_ENCTYPE_RSA_MD5_CMS , "rsa-md5-cms" },
|
|
{ KRB5_ENCTYPE_RSA_SHA1_CMS , "rsa-sha1-cms" },
|
|
{ KRB5_ENCTYPE_RC2_CBC_ENV , "rc2-cbc-env" },
|
|
{ KRB5_ENCTYPE_RSA_ENV , "rsa-env" },
|
|
{ KRB5_ENCTYPE_RSA_ES_OEAP_ENV, "rsa-es-oeap-env" },
|
|
{ KRB5_ENCTYPE_DES_EDE3_CBC_ENV, "des-ede3-cbc-env" },
|
|
{ KRB5_ENCTYPE_DES3_CBC_SHA1 , "des3-cbc-sha1" },
|
|
{ KRB5_ENCTYPE_AES128_CTS_HMAC_SHA1_96 , "aes128-cts-hmac-sha1-96" },
|
|
{ KRB5_ENCTYPE_AES256_CTS_HMAC_SHA1_96 , "aes256-cts-hmac-sha1-96" },
|
|
{ KRB5_ENCTYPE_DES_CBC_MD5_NT , "des-cbc-md5-nt" },
|
|
{ KERB_ENCTYPE_RC4_HMAC , "rc4-hmac" },
|
|
{ KERB_ENCTYPE_RC4_HMAC_EXP , "rc4-hmac-exp" },
|
|
{ KRB5_ENCTYPE_UNKNOWN , "unknown" },
|
|
{ KRB5_ENCTYPE_LOCAL_DES3_HMAC_SHA1 , "local-des3-hmac-sha1" },
|
|
{ KRB5_ENCTYPE_RC4_PLAIN_EXP , "rc4-plain-exp" },
|
|
{ KRB5_ENCTYPE_RC4_PLAIN , "rc4-plain" },
|
|
{ KRB5_ENCTYPE_RC4_PLAIN_OLD_EXP, "rc4-plain-old-exp" },
|
|
{ KRB5_ENCTYPE_RC4_HMAC_OLD_EXP, "rc4-hmac-old-exp" },
|
|
{ KRB5_ENCTYPE_RC4_PLAIN_OLD , "rc4-plain-old" },
|
|
{ KRB5_ENCTYPE_RC4_HMAC_OLD , "rc4-hmac-old" },
|
|
{ KRB5_ENCTYPE_DES_PLAIN , "des-plain" },
|
|
{ KRB5_ENCTYPE_RC4_SHA , "rc4-sha" },
|
|
{ KRB5_ENCTYPE_RC4_LM , "rc4-lm" },
|
|
{ KRB5_ENCTYPE_RC4_PLAIN2 , "rc4-plain2" },
|
|
{ KRB5_ENCTYPE_RC4_MD4 , "rc4-md4" },
|
|
{ 0 , NULL },
|
|
};
|
|
|
|
static const value_string krb5_checksum_types[] = {
|
|
{ KRB5_CHKSUM_NONE , "none" },
|
|
{ KRB5_CHKSUM_CRC32 , "crc32" },
|
|
{ KRB5_CHKSUM_MD4 , "md4" },
|
|
{ KRB5_CHKSUM_KRB_DES_MAC , "krb-des-mac" },
|
|
{ KRB5_CHKSUM_KRB_DES_MAC_K , "krb-des-mac-k" },
|
|
{ KRB5_CHKSUM_MD5 , "md5" },
|
|
{ KRB5_CHKSUM_MD5_DES , "md5-des" },
|
|
{ KRB5_CHKSUM_MD5_DES3 , "md5-des3" },
|
|
{ KRB5_CHKSUM_HMAC_SHA1_DES3_KD, "hmac-sha1-des3-kd" },
|
|
{ KRB5_CHKSUM_HMAC_SHA1_DES3 , "hmac-sha1-des3" },
|
|
{ KRB5_CHKSUM_SHA1_UNKEYED , "sha1 (unkeyed)" },
|
|
{ KRB5_CHKSUM_HMAC_MD5 , "hmac-md5" },
|
|
{ KRB5_CHKSUM_MD5_HMAC , "md5-hmac" },
|
|
{ KRB5_CHKSUM_RC4_MD5 , "rc5-md5" },
|
|
{ KRB5_CHKSUM_MD25 , "md25" },
|
|
{ KRB5_CHKSUM_DES_MAC_MD5 , "des-mac-md5" },
|
|
{ KRB5_CHKSUM_DES_MAC , "des-mac" },
|
|
{ KRB5_CHKSUM_REAL_CRC32 , "real-crc32" },
|
|
{ KRB5_CHKSUM_SHA1 , "sha1" },
|
|
{ KRB5_CHKSUM_LM , "lm" },
|
|
{ KRB5_CHKSUM_GSSAPI , "gssapi-8003" },
|
|
{ 0 , NULL },
|
|
};
|
|
#endif
|
|
|
|
#define KRB5_AD_IF_RELEVANT 1
|
|
#define KRB5_AD_INTENDED_FOR_SERVER 2
|
|
#define KRB5_AD_INTENDED_FOR_APPLICATION_CLASS 3
|
|
#define KRB5_AD_KDC_ISSUED 4
|
|
#define KRB5_AD_OR 5
|
|
#define KRB5_AD_MANDATORY_TICKET_EXTENSIONS 6
|
|
#define KRB5_AD_IN_TICKET_EXTENSIONS 7
|
|
#define KRB5_AD_MANDATORY_FOR_KDC 8
|
|
#define KRB5_AD_OSF_DCE 64
|
|
#define KRB5_AD_SESAME 65
|
|
#define KRB5_AD_OSF_DCE_PKI_CERTID 66
|
|
#define KRB5_AD_WIN2K_PAC 128
|
|
#define KRB5_AD_SIGNTICKET 0xffffffef
|
|
|
|
static const value_string krb5_ad_types[] = {
|
|
{ KRB5_AD_IF_RELEVANT , "AD-IF-RELEVANT" },
|
|
{ KRB5_AD_INTENDED_FOR_SERVER , "AD-Intended-For-Server" },
|
|
{ KRB5_AD_INTENDED_FOR_APPLICATION_CLASS , "AD-Intended-For-Application-Class" },
|
|
{ KRB5_AD_KDC_ISSUED , "AD-KDCIssued" },
|
|
{ KRB5_AD_OR , "AD-AND-OR" },
|
|
{ KRB5_AD_MANDATORY_TICKET_EXTENSIONS , "AD-Mandatory-Ticket-Extensions" },
|
|
{ KRB5_AD_IN_TICKET_EXTENSIONS , "AD-IN-Ticket-Extensions" },
|
|
{ KRB5_AD_MANDATORY_FOR_KDC , "AD-MANDATORY-FOR-KDC" },
|
|
{ KRB5_AD_OSF_DCE , "AD-OSF-DCE" },
|
|
{ KRB5_AD_SESAME , "AD-SESAME" },
|
|
{ KRB5_AD_OSF_DCE_PKI_CERTID , "AD-OSF-DCE-PKI-CertID" },
|
|
{ KRB5_AD_WIN2K_PAC , "AD-Win2k-PAC" },
|
|
{ KRB5_AD_SIGNTICKET , "AD-SignTicket" },
|
|
{ 0 , NULL },
|
|
};
|
|
#if 0
|
|
static const value_string krb5_transited_types[] = {
|
|
{ 1 , "DOMAIN-X500-COMPRESS" },
|
|
{ 0 , NULL }
|
|
};
|
|
#endif
|
|
|
|
static const value_string krb5_msg_types[] = {
|
|
{ KRB5_MSG_TICKET, "Ticket" },
|
|
{ KRB5_MSG_AUTHENTICATOR, "Authenticator" },
|
|
{ KRB5_MSG_ENC_TICKET_PART, "EncTicketPart" },
|
|
{ KRB5_MSG_TGS_REQ, "TGS-REQ" },
|
|
{ KRB5_MSG_TGS_REP, "TGS-REP" },
|
|
{ KRB5_MSG_AS_REQ, "AS-REQ" },
|
|
{ KRB5_MSG_AS_REP, "AS-REP" },
|
|
{ KRB5_MSG_AP_REQ, "AP-REQ" },
|
|
{ KRB5_MSG_AP_REP, "AP-REP" },
|
|
{ KRB5_MSG_SAFE, "KRB-SAFE" },
|
|
{ KRB5_MSG_PRIV, "KRB-PRIV" },
|
|
{ KRB5_MSG_CRED, "KRB-CRED" },
|
|
{ KRB5_MSG_ENC_AS_REP_PART, "EncASRepPart" },
|
|
{ KRB5_MSG_ENC_TGS_REP_PART, "EncTGSRepPart" },
|
|
{ KRB5_MSG_ENC_AP_REP_PART, "EncAPRepPart" },
|
|
{ KRB5_MSG_ENC_KRB_PRIV_PART, "EncKrbPrivPart" },
|
|
{ KRB5_MSG_ENC_KRB_CRED_PART, "EncKrbCredPart" },
|
|
{ KRB5_MSG_ERROR, "KRB-ERROR" },
|
|
{ 0, NULL },
|
|
};
|
|
|
|
#define KRB5_GSS_C_DELEG_FLAG 0x01
|
|
#define KRB5_GSS_C_MUTUAL_FLAG 0x02
|
|
#define KRB5_GSS_C_REPLAY_FLAG 0x04
|
|
#define KRB5_GSS_C_SEQUENCE_FLAG 0x08
|
|
#define KRB5_GSS_C_CONF_FLAG 0x10
|
|
#define KRB5_GSS_C_INTEG_FLAG 0x20
|
|
#define KRB5_GSS_C_DCE_STYLE 0x1000
|
|
|
|
static const true_false_string tfs_gss_flags_deleg = {
|
|
"Delegate credentials to remote peer",
|
|
"Do NOT delegate"
|
|
};
|
|
static const true_false_string tfs_gss_flags_mutual = {
|
|
"Request that remote peer authenticates itself",
|
|
"Mutual authentication NOT required"
|
|
};
|
|
static const true_false_string tfs_gss_flags_replay = {
|
|
"Enable replay protection for signed or sealed messages",
|
|
"Do NOT enable replay protection"
|
|
};
|
|
static const true_false_string tfs_gss_flags_sequence = {
|
|
"Enable Out-of-sequence detection for sign or sealed messages",
|
|
"Do NOT enable out-of-sequence detection"
|
|
};
|
|
static const true_false_string tfs_gss_flags_conf = {
|
|
"Confidentiality (sealing) may be invoked",
|
|
"Do NOT use Confidentiality (sealing)"
|
|
};
|
|
static const true_false_string tfs_gss_flags_integ = {
|
|
"Integrity protection (signing) may be invoked",
|
|
"Do NOT use integrity protection"
|
|
};
|
|
|
|
static const true_false_string tfs_gss_flags_dce_style = {
|
|
"DCE-STYLE",
|
|
"Not using DCE-STYLE"
|
|
};
|
|
|
|
#ifdef HAVE_KERBEROS
|
|
static int
|
|
dissect_krb5_decrypt_ticket_data (gboolean imp_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx,
|
|
proto_tree *tree, int hf_index _U_)
|
|
{
|
|
guint8 *plaintext;
|
|
int length;
|
|
kerberos_private_data_t *private_data = kerberos_get_private_data(actx);
|
|
tvbuff_t *next_tvb;
|
|
|
|
next_tvb=tvb_new_subset_remaining(tvb, offset);
|
|
length=tvb_captured_length_remaining(tvb, offset);
|
|
|
|
/* draft-ietf-krb-wg-kerberos-clarifications-05.txt :
|
|
* 7.5.1
|
|
* All Ticket encrypted parts use usage == 2
|
|
*/
|
|
plaintext=decrypt_krb5_data(tree, actx->pinfo, 2, next_tvb, private_data->etype, NULL);
|
|
|
|
if(plaintext){
|
|
tvbuff_t *child_tvb;
|
|
child_tvb = tvb_new_child_real_data(tvb, plaintext, length, length);
|
|
tvb_set_free_cb(child_tvb, g_free);
|
|
|
|
/* Add the decrypted data to the data source list. */
|
|
add_new_data_source(actx->pinfo, child_tvb, "Decrypted Krb5");
|
|
|
|
offset=dissect_kerberos_Applications(FALSE, child_tvb, 0, actx , tree, /* hf_index*/ -1);
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_decrypt_authenticator_data (gboolean imp_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx,
|
|
proto_tree *tree, int hf_index _U_)
|
|
{
|
|
guint8 *plaintext;
|
|
int length;
|
|
kerberos_private_data_t *private_data = kerberos_get_private_data(actx);
|
|
tvbuff_t *next_tvb;
|
|
|
|
next_tvb=tvb_new_subset_remaining(tvb, offset);
|
|
length=tvb_captured_length_remaining(tvb, offset);
|
|
|
|
/* draft-ietf-krb-wg-kerberos-clarifications-05.txt :
|
|
* 7.5.1
|
|
* Authenticators are encrypted with usage
|
|
* == 7 or
|
|
* == 11
|
|
*/
|
|
plaintext=decrypt_krb5_data(tree, actx->pinfo, 7, next_tvb, private_data->etype, NULL);
|
|
|
|
if(!plaintext){
|
|
plaintext=decrypt_krb5_data(tree, actx->pinfo, 11, next_tvb, private_data->etype, NULL);
|
|
}
|
|
|
|
if(plaintext){
|
|
tvbuff_t *child_tvb;
|
|
child_tvb = tvb_new_child_real_data(tvb, plaintext, length, length);
|
|
tvb_set_free_cb(child_tvb, g_free);
|
|
|
|
/* Add the decrypted data to the data source list. */
|
|
add_new_data_source(actx->pinfo, child_tvb, "Decrypted Krb5");
|
|
|
|
offset=dissect_kerberos_Applications(FALSE, child_tvb, 0, actx , tree, /* hf_index*/ -1);
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_decrypt_KDC_REP_data (gboolean imp_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx,
|
|
proto_tree *tree, int hf_index _U_)
|
|
{
|
|
guint8 *plaintext;
|
|
int length;
|
|
kerberos_private_data_t *private_data = kerberos_get_private_data(actx);
|
|
tvbuff_t *next_tvb;
|
|
|
|
next_tvb=tvb_new_subset_remaining(tvb, offset);
|
|
length=tvb_captured_length_remaining(tvb, offset);
|
|
|
|
/* draft-ietf-krb-wg-kerberos-clarifications-05.txt :
|
|
* 7.5.1
|
|
* ASREP/TGSREP encryptedparts are encrypted with usage
|
|
* == 3 or
|
|
* == 8 or
|
|
* == 9
|
|
*/
|
|
plaintext=decrypt_krb5_data(tree, actx->pinfo, 3, next_tvb, private_data->etype, NULL);
|
|
|
|
if(!plaintext){
|
|
plaintext=decrypt_krb5_data(tree, actx->pinfo, 8, next_tvb, private_data->etype, NULL);
|
|
}
|
|
|
|
if(!plaintext){
|
|
plaintext=decrypt_krb5_data(tree, actx->pinfo, 9, next_tvb, private_data->etype, NULL);
|
|
}
|
|
|
|
if(plaintext){
|
|
tvbuff_t *child_tvb;
|
|
child_tvb = tvb_new_child_real_data(tvb, plaintext, length, length);
|
|
tvb_set_free_cb(child_tvb, g_free);
|
|
|
|
/* Add the decrypted data to the data source list. */
|
|
add_new_data_source(actx->pinfo, child_tvb, "Decrypted Krb5");
|
|
|
|
offset=dissect_kerberos_Applications(FALSE, child_tvb, 0, actx , tree, /* hf_index*/ -1);
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_decrypt_PA_ENC_TIMESTAMP (gboolean imp_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx,
|
|
proto_tree *tree, int hf_index _U_)
|
|
{
|
|
guint8 *plaintext;
|
|
int length;
|
|
kerberos_private_data_t *private_data = kerberos_get_private_data(actx);
|
|
tvbuff_t *next_tvb;
|
|
|
|
next_tvb=tvb_new_subset_remaining(tvb, offset);
|
|
length=tvb_captured_length_remaining(tvb, offset);
|
|
|
|
/* draft-ietf-krb-wg-kerberos-clarifications-05.txt :
|
|
* 7.5.1
|
|
* AS-REQ PA_ENC_TIMESTAMP are encrypted with usage
|
|
* == 1
|
|
*/
|
|
plaintext=decrypt_krb5_data(tree, actx->pinfo, 1, next_tvb, private_data->etype, NULL);
|
|
|
|
if(plaintext){
|
|
tvbuff_t *child_tvb;
|
|
child_tvb = tvb_new_child_real_data(tvb, plaintext, length, length);
|
|
tvb_set_free_cb(child_tvb, g_free);
|
|
|
|
/* Add the decrypted data to the data source list. */
|
|
add_new_data_source(actx->pinfo, child_tvb, "Decrypted Krb5");
|
|
|
|
offset=dissect_kerberos_Applications(FALSE, child_tvb, 0, actx , tree, /* hf_index*/ -1);
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_decrypt_AP_REP_data (gboolean imp_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx,
|
|
proto_tree *tree, int hf_index _U_)
|
|
{
|
|
guint8 *plaintext;
|
|
int length;
|
|
kerberos_private_data_t *private_data = kerberos_get_private_data(actx);
|
|
tvbuff_t *next_tvb;
|
|
|
|
next_tvb=tvb_new_subset_remaining(tvb, offset);
|
|
length=tvb_captured_length_remaining(tvb, offset);
|
|
|
|
/* draft-ietf-krb-wg-kerberos-clarifications-05.txt :
|
|
* 7.5.1
|
|
* AP-REP are encrypted with usage == 12
|
|
*/
|
|
plaintext=decrypt_krb5_data(tree, actx->pinfo, 12, next_tvb, private_data->etype, NULL);
|
|
|
|
if(plaintext){
|
|
tvbuff_t *child_tvb;
|
|
child_tvb = tvb_new_child_real_data(tvb, plaintext, length, length);
|
|
tvb_set_free_cb(child_tvb, g_free);
|
|
|
|
/* Add the decrypted data to the data source list. */
|
|
add_new_data_source(actx->pinfo, child_tvb, "Decrypted Krb5");
|
|
|
|
offset=dissect_kerberos_Applications(FALSE, child_tvb, 0, actx , tree, /* hf_index*/ -1);
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_decrypt_PRIV_data (gboolean imp_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx,
|
|
proto_tree *tree, int hf_index _U_)
|
|
{
|
|
guint8 *plaintext;
|
|
int length;
|
|
kerberos_private_data_t *private_data = kerberos_get_private_data(actx);
|
|
tvbuff_t *next_tvb;
|
|
|
|
next_tvb=tvb_new_subset_remaining(tvb, offset);
|
|
length=tvb_captured_length_remaining(tvb, offset);
|
|
|
|
/* RFC4120 :
|
|
* EncKrbPrivPart encrypted with usage
|
|
* == 13
|
|
*/
|
|
plaintext=decrypt_krb5_data(tree, actx->pinfo, 13, next_tvb, private_data->etype, NULL);
|
|
|
|
if(plaintext){
|
|
tvbuff_t *child_tvb;
|
|
child_tvb = tvb_new_child_real_data(tvb, plaintext, length, length);
|
|
tvb_set_free_cb(child_tvb, g_free);
|
|
|
|
/* Add the decrypted data to the data source list. */
|
|
add_new_data_source(actx->pinfo, child_tvb, "Decrypted Krb5");
|
|
|
|
offset=dissect_kerberos_Applications(FALSE, child_tvb, 0, actx , tree, /* hf_index*/ -1);
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_decrypt_CRED_data (gboolean imp_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx,
|
|
proto_tree *tree, int hf_index _U_)
|
|
{
|
|
guint8 *plaintext;
|
|
int length;
|
|
kerberos_private_data_t *private_data = kerberos_get_private_data(actx);
|
|
tvbuff_t *next_tvb;
|
|
|
|
next_tvb=tvb_new_subset_remaining(tvb, offset);
|
|
length=tvb_captured_length_remaining(tvb, offset);
|
|
|
|
/* RFC4120 :
|
|
* EncKrbCredPart encrypted with usage
|
|
* == 14
|
|
*/
|
|
plaintext=decrypt_krb5_data(tree, actx->pinfo, 14, next_tvb, private_data->etype, NULL);
|
|
|
|
if(plaintext){
|
|
tvbuff_t *child_tvb;
|
|
child_tvb = tvb_new_child_real_data(tvb, plaintext, length, length);
|
|
tvb_set_free_cb(child_tvb, g_free);
|
|
|
|
/* Add the decrypted data to the data source list. */
|
|
add_new_data_source(actx->pinfo, child_tvb, "Decrypted Krb5");
|
|
|
|
offset=dissect_kerberos_Applications(FALSE, child_tvb, 0, actx , tree, /* hf_index*/ -1);
|
|
}
|
|
return offset;
|
|
}
|
|
#endif
|
|
|
|
/* Dissect a GSSAPI checksum as per RFC1964. This is NOT ASN.1 encoded.
|
|
*/
|
|
static int
|
|
dissect_krb5_rfc1964_checksum(asn1_ctx_t *actx _U_, proto_tree *tree, tvbuff_t *tvb)
|
|
{
|
|
int offset=0;
|
|
guint32 len;
|
|
guint16 dlglen;
|
|
|
|
/* Length of Bnd field */
|
|
len=tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_item(tree, hf_krb_gssapi_len, tvb, offset, 4, ENC_LITTLE_ENDIAN);
|
|
offset += 4;
|
|
|
|
/* Bnd field */
|
|
proto_tree_add_item(tree, hf_krb_gssapi_bnd, tvb, offset, len, ENC_NA);
|
|
offset += len;
|
|
|
|
|
|
/* flags */
|
|
proto_tree_add_item(tree, hf_krb_gssapi_c_flag_dce_style, tvb, offset, 4, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(tree, hf_krb_gssapi_c_flag_integ, tvb, offset, 4, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(tree, hf_krb_gssapi_c_flag_conf, tvb, offset, 4, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(tree, hf_krb_gssapi_c_flag_sequence, tvb, offset, 4, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(tree, hf_krb_gssapi_c_flag_replay, tvb, offset, 4, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(tree, hf_krb_gssapi_c_flag_mutual, tvb, offset, 4, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(tree, hf_krb_gssapi_c_flag_deleg, tvb, offset, 4, ENC_LITTLE_ENDIAN);
|
|
offset += 4;
|
|
|
|
/* the next fields are optional so we have to check that we have
|
|
* more data in our buffers */
|
|
if(tvb_reported_length_remaining(tvb, offset)<2){
|
|
return offset;
|
|
}
|
|
/* dlgopt identifier */
|
|
proto_tree_add_item(tree, hf_krb_gssapi_dlgopt, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
offset += 2;
|
|
|
|
if(tvb_reported_length_remaining(tvb, offset)<2){
|
|
return offset;
|
|
}
|
|
/* dlglen identifier */
|
|
dlglen=tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_item(tree, hf_krb_gssapi_dlglen, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
offset += 2;
|
|
|
|
if(dlglen!=tvb_reported_length_remaining(tvb, offset)){
|
|
proto_tree_add_expert_format(tree, actx->pinfo, &ei_krb_gssapi_dlglen, tvb, 0, 0,
|
|
"Error: DlgLen:%d is not the same as number of bytes remaining:%d", dlglen, tvb_captured_length_remaining(tvb, offset));
|
|
return offset;
|
|
}
|
|
|
|
/* this should now be a KRB_CRED message */
|
|
offset=dissect_kerberos_Applications(FALSE, tvb, offset, actx, tree, /* hf_index */ -1);
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_PA_PROV_SRV_LOCATION(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_)
|
|
{
|
|
offset=dissect_ber_GeneralString(actx, tree, tvb, offset, hf_krb_provsrv_location, NULL, 0);
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_PW_SALT(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_)
|
|
{
|
|
guint32 nt_status;
|
|
|
|
/* Microsoft stores a special 12 byte blob here
|
|
* guint32 NT_status
|
|
* guint32 unknown
|
|
* guint32 unknown
|
|
* decode everything as this blob for now until we see if anyone
|
|
* else ever uses it or we learn how to tell whether this
|
|
* is such an MS blob or not.
|
|
*/
|
|
proto_tree_add_item(tree, hf_krb_smb_nt_status, tvb, offset, 4,
|
|
ENC_LITTLE_ENDIAN);
|
|
nt_status=tvb_get_letohl(tvb, offset);
|
|
if(nt_status) {
|
|
col_append_fstr(actx->pinfo->cinfo, COL_INFO,
|
|
" NT Status: %s",
|
|
val_to_str(nt_status, NT_errors,
|
|
"Unknown error code %#x"));
|
|
}
|
|
offset += 4;
|
|
|
|
proto_tree_add_item(tree, hf_krb_smb_unknown, tvb, offset, 4,
|
|
ENC_LITTLE_ENDIAN);
|
|
offset += 4;
|
|
|
|
proto_tree_add_item(tree, hf_krb_smb_unknown, tvb, offset, 4,
|
|
ENC_LITTLE_ENDIAN);
|
|
offset += 4;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_PAC_DREP(proto_tree *parent_tree, tvbuff_t *tvb, int offset, guint8 *drep)
|
|
{
|
|
proto_tree *tree;
|
|
guint8 val;
|
|
|
|
tree = proto_tree_add_subtree(parent_tree, tvb, offset, 16, ett_krb_pac_drep, NULL, "DREP");
|
|
|
|
val = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_dcerpc_drep_byteorder, tvb, offset, 1, val>>4);
|
|
|
|
offset++;
|
|
|
|
if (drep) {
|
|
*drep = val;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
/* This might be some sort of header that MIDL generates when creating
|
|
* marshalling/unmarshalling code for blobs that are not to be transported
|
|
* ontop of DCERPC and where the DREP fields specifying things such as
|
|
* endianess and similar are not available.
|
|
*/
|
|
static int
|
|
dissect_krb5_PAC_NDRHEADERBLOB(proto_tree *parent_tree, tvbuff_t *tvb, int offset, guint8 *drep, asn1_ctx_t *actx _U_)
|
|
{
|
|
proto_tree *tree;
|
|
|
|
tree = proto_tree_add_subtree(parent_tree, tvb, offset, 16, ett_krb_pac_midl_blob, NULL, "MES header");
|
|
|
|
/* modified DREP field that is used for stuff that is transporetd ontop
|
|
of non dcerpc
|
|
*/
|
|
proto_tree_add_item(tree, hf_krb_midl_version, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
offset = dissect_krb5_PAC_DREP(tree, tvb, offset, drep);
|
|
|
|
|
|
proto_tree_add_item(tree, hf_krb_midl_hdr_len, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
offset+=2;
|
|
|
|
proto_tree_add_item(tree, hf_krb_midl_fill_bytes, tvb, offset, 4, ENC_LITTLE_ENDIAN);
|
|
offset += 4;
|
|
|
|
/* length of blob that follows */
|
|
proto_tree_add_item(tree, hf_krb_midl_blob_len, tvb, offset, 8, ENC_LITTLE_ENDIAN);
|
|
offset += 8;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_PAC_LOGON_INFO(proto_tree *parent_tree, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_)
|
|
{
|
|
proto_item *item;
|
|
proto_tree *tree;
|
|
guint8 drep[4] = { 0x10, 0x00, 0x00, 0x00}; /* fake DREP struct */
|
|
static dcerpc_info di; /* fake dcerpc_info struct */
|
|
static dcerpc_call_value call_data;
|
|
|
|
item = proto_tree_add_item(parent_tree, hf_krb_pac_logon_info, tvb, offset, -1, ENC_NA);
|
|
tree = proto_item_add_subtree(item, ett_krb_pac_logon_info);
|
|
|
|
/* skip the first 16 bytes, they are some magic created by the idl
|
|
* compiler the first 4 bytes might be flags?
|
|
*/
|
|
offset = dissect_krb5_PAC_NDRHEADERBLOB(tree, tvb, offset, &drep[0], actx);
|
|
|
|
/* the PAC_LOGON_INFO blob */
|
|
/* fake whatever state the dcerpc runtime support needs */
|
|
di.conformant_run=0;
|
|
/* we need di->call_data->flags.NDR64 == 0 */
|
|
di.call_data=&call_data;
|
|
init_ndr_pointer_list(&di);
|
|
offset = dissect_ndr_pointer(tvb, offset, actx->pinfo, tree, &di, drep,
|
|
netlogon_dissect_PAC_LOGON_INFO, NDR_POINTER_UNIQUE,
|
|
"PAC_LOGON_INFO:", -1);
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_PAC_S4U_DELEGATION_INFO(proto_tree *parent_tree, tvbuff_t *tvb, int offset, asn1_ctx_t *actx)
|
|
{
|
|
proto_item *item;
|
|
proto_tree *tree;
|
|
guint8 drep[4] = { 0x10, 0x00, 0x00, 0x00}; /* fake DREP struct */
|
|
static dcerpc_info di; /* fake dcerpc_info struct */
|
|
static dcerpc_call_value call_data;
|
|
|
|
item = proto_tree_add_item(parent_tree, hf_krb_pac_s4u_delegation_info, tvb, offset, -1, ENC_NA);
|
|
tree = proto_item_add_subtree(item, ett_krb_pac_s4u_delegation_info);
|
|
|
|
/* skip the first 16 bytes, they are some magic created by the idl
|
|
* compiler the first 4 bytes might be flags?
|
|
*/
|
|
offset = dissect_krb5_PAC_NDRHEADERBLOB(tree, tvb, offset, &drep[0], actx);
|
|
|
|
|
|
/* the S4U_DELEGATION_INFO blob. See [MS-PAC] */
|
|
/* fake whatever state the dcerpc runtime support needs */
|
|
di.conformant_run=0;
|
|
/* we need di->call_data->flags.NDR64 == 0 */
|
|
di.call_data=&call_data;
|
|
init_ndr_pointer_list(&di);
|
|
offset = dissect_ndr_pointer(tvb, offset, actx->pinfo, tree, &di, drep,
|
|
netlogon_dissect_PAC_S4U_DELEGATION_INFO, NDR_POINTER_UNIQUE,
|
|
"PAC_S4U_DELEGATION_INFO:", -1);
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_PAC_UPN_DNS_INFO(proto_tree *parent_tree, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_)
|
|
{
|
|
proto_item *item;
|
|
proto_tree *tree;
|
|
guint16 dns_offset, dns_len;
|
|
guint16 upn_offset, upn_len;
|
|
const char *dn;
|
|
int dn_len;
|
|
guint16 bc;
|
|
|
|
item = proto_tree_add_item(parent_tree, hf_krb_pac_upn_dns_info, tvb, offset, -1, ENC_NA);
|
|
tree = proto_item_add_subtree(item, ett_krb_pac_upn_dns_info);
|
|
|
|
/* upn */
|
|
upn_len = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_item(tree, hf_krb_pac_upn_upn_len, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
offset+=2;
|
|
upn_offset = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_item(tree, hf_krb_pac_upn_upn_offset, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
offset+=2;
|
|
|
|
/* dns */
|
|
dns_len = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_item(tree, hf_krb_pac_upn_dns_len, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
offset+=2;
|
|
dns_offset = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_item(tree, hf_krb_pac_upn_dns_offset, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
offset+=2;
|
|
|
|
/* flags */
|
|
proto_tree_add_item(tree, hf_krb_pac_upn_flags, tvb, offset, 4, ENC_LITTLE_ENDIAN);
|
|
|
|
/* upn */
|
|
offset = upn_offset;
|
|
dn_len = upn_len;
|
|
bc = tvb_reported_length_remaining(tvb, offset);
|
|
dn = get_unicode_or_ascii_string(tvb, &offset, TRUE, &dn_len, TRUE, TRUE, &bc);
|
|
proto_tree_add_string(tree, hf_krb_pac_upn_upn_name, tvb, upn_offset, upn_len, dn);
|
|
|
|
/* dns */
|
|
offset = dns_offset;
|
|
dn_len = dns_len;
|
|
bc = tvb_reported_length_remaining(tvb, offset);
|
|
dn = get_unicode_or_ascii_string(tvb, &offset, TRUE, &dn_len, TRUE, TRUE, &bc);
|
|
proto_tree_add_string(tree, hf_krb_pac_upn_dns_name, tvb, dns_offset, dns_len, dn);
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_PAC_CREDENTIAL_TYPE(proto_tree *parent_tree, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_)
|
|
{
|
|
proto_tree_add_item(parent_tree, hf_krb_pac_credential_type, tvb, offset, -1, ENC_NA);
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_PAC_SERVER_CHECKSUM(proto_tree *parent_tree, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_)
|
|
{
|
|
proto_item *item;
|
|
proto_tree *tree;
|
|
|
|
item = proto_tree_add_item(parent_tree, hf_krb_pac_server_checksum, tvb, offset, -1, ENC_NA);
|
|
tree = proto_item_add_subtree(item, ett_krb_pac_server_checksum);
|
|
|
|
/* signature type */
|
|
proto_tree_add_item(tree, hf_krb_pac_signature_type, tvb, offset, 4, ENC_LITTLE_ENDIAN);
|
|
offset+=4;
|
|
|
|
/* signature data */
|
|
proto_tree_add_item(tree, hf_krb_pac_signature_signature, tvb, offset, -1, ENC_NA);
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_PAC_PRIVSVR_CHECKSUM(proto_tree *parent_tree, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_)
|
|
{
|
|
proto_item *item;
|
|
proto_tree *tree;
|
|
|
|
item = proto_tree_add_item(parent_tree, hf_krb_pac_privsvr_checksum, tvb, offset, -1, ENC_NA);
|
|
tree = proto_item_add_subtree(item, ett_krb_pac_privsvr_checksum);
|
|
|
|
/* signature type */
|
|
proto_tree_add_item(tree, hf_krb_pac_signature_type, tvb, offset, 4, ENC_LITTLE_ENDIAN);
|
|
offset+=4;
|
|
|
|
/* signature data */
|
|
proto_tree_add_item(tree, hf_krb_pac_signature_signature, tvb, offset, -1, ENC_NA);
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_PAC_CLIENT_INFO_TYPE(proto_tree *parent_tree, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_)
|
|
{
|
|
proto_item *item;
|
|
proto_tree *tree;
|
|
guint16 namelen;
|
|
|
|
item = proto_tree_add_item(parent_tree, hf_krb_pac_client_info_type, tvb, offset, -1, ENC_NA);
|
|
tree = proto_item_add_subtree(item, ett_krb_pac_client_info_type);
|
|
|
|
/* clientid */
|
|
offset = dissect_nt_64bit_time(tvb, tree, offset, hf_krb_pac_clientid);
|
|
|
|
/* name length */
|
|
namelen=tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_krb_pac_namelen, tvb, offset, 2, namelen);
|
|
offset+=2;
|
|
|
|
/* client name */
|
|
proto_tree_add_item(tree, hf_krb_pac_clientname, tvb, offset, namelen, ENC_UTF_16|ENC_LITTLE_ENDIAN);
|
|
offset+=namelen;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_AD_WIN2K_PAC_struct(proto_tree *tree, tvbuff_t *tvb, int offset, asn1_ctx_t *actx)
|
|
{
|
|
guint32 pac_type;
|
|
guint32 pac_size;
|
|
guint32 pac_offset;
|
|
proto_item *it=NULL;
|
|
proto_tree *tr=NULL;
|
|
tvbuff_t *next_tvb;
|
|
|
|
/* type of pac data */
|
|
pac_type=tvb_get_letohl(tvb, offset);
|
|
it=proto_tree_add_uint(tree, hf_krb_w2k_pac_type, tvb, offset, 4, pac_type);
|
|
tr=proto_item_add_subtree(it, ett_krb_pac);
|
|
|
|
offset += 4;
|
|
|
|
/* size of pac data */
|
|
pac_size=tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_uint(tr, hf_krb_w2k_pac_size, tvb, offset, 4, pac_size);
|
|
offset += 4;
|
|
|
|
/* offset to pac data */
|
|
pac_offset=tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_uint(tr, hf_krb_w2k_pac_offset, tvb, offset, 4, pac_offset);
|
|
offset += 8;
|
|
|
|
next_tvb=tvb_new_subset(tvb, pac_offset, pac_size, pac_size);
|
|
switch(pac_type){
|
|
case PAC_LOGON_INFO:
|
|
dissect_krb5_PAC_LOGON_INFO(tr, next_tvb, 0, actx);
|
|
break;
|
|
case PAC_CREDENTIAL_TYPE:
|
|
dissect_krb5_PAC_CREDENTIAL_TYPE(tr, next_tvb, 0, actx);
|
|
break;
|
|
case PAC_SERVER_CHECKSUM:
|
|
dissect_krb5_PAC_SERVER_CHECKSUM(tr, next_tvb, 0, actx);
|
|
break;
|
|
case PAC_PRIVSVR_CHECKSUM:
|
|
dissect_krb5_PAC_PRIVSVR_CHECKSUM(tr, next_tvb, 0, actx);
|
|
break;
|
|
case PAC_CLIENT_INFO_TYPE:
|
|
dissect_krb5_PAC_CLIENT_INFO_TYPE(tr, next_tvb, 0, actx);
|
|
break;
|
|
case PAC_S4U_DELEGATION_INFO:
|
|
dissect_krb5_PAC_S4U_DELEGATION_INFO(tr, next_tvb, 0, actx);
|
|
break;
|
|
case PAC_UPN_DNS_INFO:
|
|
dissect_krb5_PAC_UPN_DNS_INFO(tr, next_tvb, 0, actx);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_krb5_AD_WIN2K_PAC(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index _U_)
|
|
{
|
|
guint32 entries;
|
|
guint32 version;
|
|
guint32 i;
|
|
|
|
/* first in the PAC structure comes the number of entries */
|
|
entries=tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_krb_w2k_pac_entries, tvb, offset, 4, entries);
|
|
offset += 4;
|
|
|
|
/* second comes the version */
|
|
version=tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_krb_w2k_pac_version, tvb, offset, 4, version);
|
|
offset += 4;
|
|
|
|
for(i=0;i<entries;i++){
|
|
offset=dissect_krb5_AD_WIN2K_PAC_struct(tree, tvb, offset, actx);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
#include "packet-kerberos-fn.c"
|
|
|
|
/* Make wrappers around exported functions for now */
|
|
int
|
|
dissect_krb5_Checksum(proto_tree *tree, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_)
|
|
{
|
|
return dissect_kerberos_Checksum(FALSE, tvb, offset, actx, tree, hf_kerberos_cksum);
|
|
|
|
}
|
|
|
|
int
|
|
dissect_krb5_ctime(proto_tree *tree, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_)
|
|
{
|
|
return dissect_kerberos_KerberosTime(FALSE, tvb, offset, actx, tree, hf_kerberos_ctime);
|
|
}
|
|
|
|
|
|
int
|
|
dissect_krb5_cname(proto_tree *tree, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_)
|
|
{
|
|
return dissect_kerberos_PrincipalName(FALSE, tvb, offset, actx, tree, hf_kerberos_cname);
|
|
}
|
|
int
|
|
dissect_krb5_realm(proto_tree *tree, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_)
|
|
{
|
|
return dissect_kerberos_Realm(FALSE, tvb, offset, actx, tree, hf_kerberos_realm);
|
|
}
|
|
|
|
|
|
static gint
|
|
dissect_kerberos_common(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
gboolean dci, gboolean do_col_protocol, gboolean have_rm,
|
|
kerberos_callbacks *cb)
|
|
{
|
|
volatile int offset = 0;
|
|
proto_tree *volatile kerberos_tree = NULL;
|
|
proto_item *volatile item = NULL;
|
|
asn1_ctx_t asn1_ctx;
|
|
|
|
/* TCP record mark and length */
|
|
guint32 krb_rm = 0;
|
|
gint krb_reclen = 0;
|
|
|
|
gbl_do_col_info=dci;
|
|
|
|
if (have_rm) {
|
|
krb_rm = tvb_get_ntohl(tvb, offset);
|
|
krb_reclen = kerberos_rm_to_reclen(krb_rm);
|
|
/*
|
|
* What is a reasonable size limit?
|
|
*/
|
|
if (krb_reclen > 10 * 1024 * 1024) {
|
|
return (-1);
|
|
}
|
|
|
|
if (do_col_protocol) {
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "KRB5");
|
|
}
|
|
|
|
if (tree) {
|
|
item = proto_tree_add_item(tree, proto_kerberos, tvb, 0, -1, ENC_NA);
|
|
kerberos_tree = proto_item_add_subtree(item, ett_kerberos);
|
|
}
|
|
|
|
show_krb_recordmark(kerberos_tree, tvb, offset, krb_rm);
|
|
offset += 4;
|
|
} else {
|
|
/* Do some sanity checking here,
|
|
* All krb5 packets start with a TAG class that is BER_CLASS_APP
|
|
* and a tag value that is either of the values below:
|
|
* If it doesn't look like kerberos, return 0 and let someone else have
|
|
* a go at it.
|
|
*/
|
|
gint8 tmp_class;
|
|
gboolean tmp_pc;
|
|
gint32 tmp_tag;
|
|
|
|
get_ber_identifier(tvb, offset, &tmp_class, &tmp_pc, &tmp_tag);
|
|
if(tmp_class!=BER_CLASS_APP){
|
|
return 0;
|
|
}
|
|
switch(tmp_tag){
|
|
case KRB5_MSG_TICKET:
|
|
case KRB5_MSG_AUTHENTICATOR:
|
|
case KRB5_MSG_ENC_TICKET_PART:
|
|
case KRB5_MSG_AS_REQ:
|
|
case KRB5_MSG_AS_REP:
|
|
case KRB5_MSG_TGS_REQ:
|
|
case KRB5_MSG_TGS_REP:
|
|
case KRB5_MSG_AP_REQ:
|
|
case KRB5_MSG_AP_REP:
|
|
case KRB5_MSG_ENC_AS_REP_PART:
|
|
case KRB5_MSG_ENC_TGS_REP_PART:
|
|
case KRB5_MSG_ENC_AP_REP_PART:
|
|
case KRB5_MSG_ENC_KRB_PRIV_PART:
|
|
case KRB5_MSG_ENC_KRB_CRED_PART:
|
|
case KRB5_MSG_SAFE:
|
|
case KRB5_MSG_PRIV:
|
|
case KRB5_MSG_ERROR:
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
if (do_col_protocol) {
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "KRB5");
|
|
}
|
|
if (gbl_do_col_info) {
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
}
|
|
if (tree) {
|
|
item = proto_tree_add_item(tree, proto_kerberos, tvb, 0, -1, ENC_NA);
|
|
kerberos_tree = proto_item_add_subtree(item, ett_kerberos);
|
|
}
|
|
}
|
|
asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
|
|
asn1_ctx.private_data = cb;
|
|
|
|
TRY {
|
|
offset=dissect_kerberos_Applications(FALSE, tvb, offset, &asn1_ctx , kerberos_tree, /* hf_index */ -1);
|
|
} CATCH_BOUNDS_ERRORS {
|
|
RETHROW;
|
|
} ENDTRY;
|
|
|
|
proto_item_set_len(item, offset);
|
|
return offset;
|
|
}
|
|
|
|
/*
|
|
* Display the TCP record mark.
|
|
*/
|
|
void
|
|
show_krb_recordmark(proto_tree *tree, tvbuff_t *tvb, gint start, guint32 krb_rm)
|
|
{
|
|
gint rec_len;
|
|
proto_tree *rm_tree;
|
|
|
|
if (tree == NULL)
|
|
return;
|
|
|
|
rec_len = kerberos_rm_to_reclen(krb_rm);
|
|
rm_tree = proto_tree_add_subtree_format(tree, tvb, start, 4, ett_krb_recordmark, NULL,
|
|
"Record Mark: %u %s", rec_len, plurality(rec_len, "byte", "bytes"));
|
|
proto_tree_add_boolean(rm_tree, hf_krb_rm_reserved, tvb, start, 4, krb_rm);
|
|
proto_tree_add_uint(rm_tree, hf_krb_rm_reclen, tvb, start, 4, krb_rm);
|
|
}
|
|
|
|
gint
|
|
dissect_kerberos_main(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int do_col_info, kerberos_callbacks *cb)
|
|
{
|
|
return (dissect_kerberos_common(tvb, pinfo, tree, do_col_info, FALSE, FALSE, cb));
|
|
}
|
|
|
|
guint32
|
|
kerberos_output_keytype(void)
|
|
{
|
|
return gbl_keytype;
|
|
}
|
|
|
|
static gint
|
|
dissect_kerberos_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
|
|
{
|
|
/* Some weird kerberos implementation apparently do krb4 on the krb5 port.
|
|
Since all (except weirdo transarc krb4 stuff) use
|
|
an opcode <=16 in the first byte, use this to see if it might
|
|
be krb4.
|
|
All krb5 commands start with an APPL tag and thus is >=0x60
|
|
so if first byte is <=16 just blindly assume it is krb4 then
|
|
*/
|
|
if(tvb_captured_length(tvb) >= 1 && tvb_get_guint8(tvb, 0)<=0x10){
|
|
if(krb4_handle){
|
|
gboolean res;
|
|
|
|
res=call_dissector_only(krb4_handle, tvb, pinfo, tree, NULL);
|
|
return res;
|
|
}else{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
return dissect_kerberos_common(tvb, pinfo, tree, TRUE, TRUE, FALSE, NULL);
|
|
}
|
|
|
|
gint
|
|
kerberos_rm_to_reclen(guint krb_rm)
|
|
{
|
|
return (krb_rm & KRB_RM_RECLEN);
|
|
}
|
|
|
|
guint
|
|
get_krb_pdu_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *data _U_)
|
|
{
|
|
guint krb_rm;
|
|
gint pdulen;
|
|
|
|
krb_rm = tvb_get_ntohl(tvb, offset);
|
|
pdulen = kerberos_rm_to_reclen(krb_rm);
|
|
return (pdulen + 4);
|
|
}
|
|
static void
|
|
kerberos_prefs_apply_cb(void) {
|
|
#ifdef HAVE_LIBNETTLE
|
|
clear_keytab();
|
|
read_keytab_file(keytab_filename);
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
dissect_kerberos_tcp_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
pinfo->fragmented = TRUE;
|
|
if (dissect_kerberos_common(tvb, pinfo, tree, TRUE, TRUE, TRUE, NULL) < 0) {
|
|
/*
|
|
* The dissector failed to recognize this as a valid
|
|
* Kerberos message. Mark it as a continuation packet.
|
|
*/
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Continuation");
|
|
}
|
|
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_kerberos_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
|
|
{
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "KRB5");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
tcp_dissect_pdus(tvb, pinfo, tree, krb_desegment, 4, get_krb_pdu_len,
|
|
dissect_kerberos_tcp_pdu, data);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
/*--- proto_register_kerberos -------------------------------------------*/
|
|
void proto_register_kerberos(void) {
|
|
|
|
/* List of fields */
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_krb_rm_reserved, {
|
|
"Reserved", "kerberos.rm.reserved", FT_BOOLEAN, 32,
|
|
TFS(&tfs_set_notset), KRB_RM_RESERVED, "Record mark reserved bit", HFILL }},
|
|
{ &hf_krb_rm_reclen, {
|
|
"Record Length", "kerberos.rm.length", FT_UINT32, BASE_DEC,
|
|
NULL, KRB_RM_RECLEN, NULL, HFILL }},
|
|
{ &hf_krb_provsrv_location, {
|
|
"PROVSRV Location", "kerberos.provsrv_location", FT_STRING, BASE_NONE,
|
|
NULL, 0, "PacketCable PROV SRV Location", HFILL }},
|
|
{ &hf_krb_smb_nt_status,
|
|
{ "NT Status", "kerberos.smb.nt_status", FT_UINT32, BASE_HEX,
|
|
VALS(NT_errors), 0, "NT Status code", HFILL }},
|
|
{ &hf_krb_smb_unknown,
|
|
{ "Unknown", "kerberos.smb.unknown", FT_UINT32, BASE_HEX,
|
|
NULL, 0, NULL, HFILL }},
|
|
{ &hf_krb_address_ip, {
|
|
"IP Address", "kerberos.addr_ip", FT_IPv4, BASE_NONE,
|
|
NULL, 0, NULL, HFILL }},
|
|
{ &hf_krb_address_ipv6, {
|
|
"IPv6 Address", "kerberos.addr_ipv6", FT_IPv6, BASE_NONE,
|
|
NULL, 0, NULL, HFILL }},
|
|
{ &hf_krb_address_netbios, {
|
|
"NetBIOS Address", "kerberos.addr_nb", FT_STRING, BASE_NONE,
|
|
NULL, 0, "NetBIOS Address and type", HFILL }},
|
|
{ &hf_krb_gssapi_len, {
|
|
"Length", "kerberos.gssapi.len", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Length of GSSAPI Bnd field", HFILL }},
|
|
{ &hf_krb_gssapi_bnd, {
|
|
"Bnd", "kerberos.gssapi.bdn", FT_BYTES, BASE_NONE,
|
|
NULL, 0, "GSSAPI Bnd field", HFILL }},
|
|
{ &hf_krb_gssapi_c_flag_deleg, {
|
|
"Deleg", "kerberos.gssapi.checksum.flags.deleg", FT_BOOLEAN, 32,
|
|
TFS(&tfs_gss_flags_deleg), KRB5_GSS_C_DELEG_FLAG, NULL, HFILL }},
|
|
{ &hf_krb_gssapi_c_flag_mutual, {
|
|
"Mutual", "kerberos.gssapi.checksum.flags.mutual", FT_BOOLEAN, 32,
|
|
TFS(&tfs_gss_flags_mutual), KRB5_GSS_C_MUTUAL_FLAG, NULL, HFILL }},
|
|
{ &hf_krb_gssapi_c_flag_replay, {
|
|
"Replay", "kerberos.gssapi.checksum.flags.replay", FT_BOOLEAN, 32,
|
|
TFS(&tfs_gss_flags_replay), KRB5_GSS_C_REPLAY_FLAG, NULL, HFILL }},
|
|
{ &hf_krb_gssapi_c_flag_sequence, {
|
|
"Sequence", "kerberos.gssapi.checksum.flags.sequence", FT_BOOLEAN, 32,
|
|
TFS(&tfs_gss_flags_sequence), KRB5_GSS_C_SEQUENCE_FLAG, NULL, HFILL }},
|
|
{ &hf_krb_gssapi_c_flag_conf, {
|
|
"Conf", "kerberos.gssapi.checksum.flags.conf", FT_BOOLEAN, 32,
|
|
TFS(&tfs_gss_flags_conf), KRB5_GSS_C_CONF_FLAG, NULL, HFILL }},
|
|
{ &hf_krb_gssapi_c_flag_integ, {
|
|
"Integ", "kerberos.gssapi.checksum.flags.integ", FT_BOOLEAN, 32,
|
|
TFS(&tfs_gss_flags_integ), KRB5_GSS_C_INTEG_FLAG, NULL, HFILL }},
|
|
{ &hf_krb_gssapi_c_flag_dce_style, {
|
|
"DCE-style", "kerberos.gssapi.checksum.flags.dce-style", FT_BOOLEAN, 32,
|
|
TFS(&tfs_gss_flags_dce_style), KRB5_GSS_C_DCE_STYLE, NULL, HFILL }},
|
|
{ &hf_krb_gssapi_dlgopt, {
|
|
"DlgOpt", "kerberos.gssapi.dlgopt", FT_UINT16, BASE_DEC,
|
|
NULL, 0, "GSSAPI DlgOpt", HFILL }},
|
|
{ &hf_krb_gssapi_dlglen, {
|
|
"DlgLen", "kerberos.gssapi.dlglen", FT_UINT16, BASE_DEC,
|
|
NULL, 0, "GSSAPI DlgLen", HFILL }},
|
|
{ &hf_krb_midl_blob_len, {
|
|
"Blob Length", "kerberos.midl_blob_len", FT_UINT64, BASE_DEC,
|
|
NULL, 0, "Length of NDR encoded data that follows", HFILL }},
|
|
{ &hf_krb_midl_fill_bytes, {
|
|
"Fill bytes", "kerberos.midl.fill_bytes", FT_UINT32, BASE_HEX,
|
|
NULL, 0, "Just some fill bytes", HFILL }},
|
|
{ &hf_krb_midl_version, {
|
|
"Version", "kerberos.midl.version", FT_UINT8, BASE_DEC,
|
|
NULL, 0, "Version of pickling", HFILL }},
|
|
{ &hf_krb_midl_hdr_len, {
|
|
"HDR Length", "kerberos.midl.hdr_len", FT_UINT16, BASE_DEC,
|
|
NULL, 0, "Length of header", HFILL }},
|
|
{ &hf_krb_pac_signature_type, {
|
|
"Type", "kerberos.pac.signature.type", FT_INT32, BASE_DEC,
|
|
NULL, 0, "PAC Signature Type", HFILL }},
|
|
{ &hf_krb_pac_signature_signature, {
|
|
"Signature", "kerberos.pac.signature.signature", FT_BYTES, BASE_NONE,
|
|
NULL, 0, "A PAC signature blob", HFILL }},
|
|
{ &hf_krb_w2k_pac_entries, {
|
|
"Num Entries", "kerberos.pac.entries", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Number of W2k PAC entries", HFILL }},
|
|
{ &hf_krb_w2k_pac_version, {
|
|
"Version", "kerberos.pac.version", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Version of PAC structures", HFILL }},
|
|
{ &hf_krb_w2k_pac_type, {
|
|
"Type", "kerberos.pac.type", FT_UINT32, BASE_DEC,
|
|
VALS(w2k_pac_types), 0, "Type of W2k PAC entry", HFILL }},
|
|
{ &hf_krb_w2k_pac_size, {
|
|
"Size", "kerberos.pac.size", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Size of W2k PAC entry", HFILL }},
|
|
{ &hf_krb_w2k_pac_offset, {
|
|
"Offset", "kerberos.pac.offset", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Offset to W2k PAC entry", HFILL }},
|
|
{ &hf_krb_pac_clientid, {
|
|
"ClientID", "kerberos.pac.clientid", FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL,
|
|
NULL, 0, "ClientID Timestamp", HFILL }},
|
|
{ &hf_krb_pac_namelen, {
|
|
"Name Length", "kerberos.pac.namelen", FT_UINT16, BASE_DEC,
|
|
NULL, 0, "Length of client name", HFILL }},
|
|
{ &hf_krb_pac_clientname, {
|
|
"Name", "kerberos.pac.name", FT_STRING, BASE_NONE,
|
|
NULL, 0, "Name of the Client in the PAC structure", HFILL }},
|
|
{ &hf_krb_pac_logon_info, {
|
|
"PAC_LOGON_INFO", "kerberos.pac_logon_info", FT_BYTES, BASE_NONE,
|
|
NULL, 0, "PAC_LOGON_INFO structure", HFILL }},
|
|
{ &hf_krb_pac_credential_type, {
|
|
"PAC_CREDENTIAL_TYPE", "kerberos.pac_credential_type", FT_BYTES, BASE_NONE,
|
|
NULL, 0, "PAC_CREDENTIAL_TYPE structure", HFILL }},
|
|
{ &hf_krb_pac_server_checksum, {
|
|
"PAC_SERVER_CHECKSUM", "kerberos.pac_server_checksum", FT_BYTES, BASE_NONE,
|
|
NULL, 0, "PAC_SERVER_CHECKSUM structure", HFILL }},
|
|
{ &hf_krb_pac_privsvr_checksum, {
|
|
"PAC_PRIVSVR_CHECKSUM", "kerberos.pac_privsvr_checksum", FT_BYTES, BASE_NONE,
|
|
NULL, 0, "PAC_PRIVSVR_CHECKSUM structure", HFILL }},
|
|
{ &hf_krb_pac_client_info_type, {
|
|
"PAC_CLIENT_INFO_TYPE", "kerberos.pac_client_info_type", FT_BYTES, BASE_NONE,
|
|
NULL, 0, "PAC_CLIENT_INFO_TYPE structure", HFILL }},
|
|
{ &hf_krb_pac_s4u_delegation_info, {
|
|
"PAC_S4U_DELEGATION_INFO", "kerberos.pac_s4u_delegation_info", FT_BYTES, BASE_NONE,
|
|
NULL, 0, "PAC_S4U_DELEGATION_INFO structure", HFILL }},
|
|
{ &hf_krb_pac_upn_dns_info, {
|
|
"UPN_DNS_INFO", "kerberos.pac_upn_dns_info", FT_BYTES, BASE_NONE,
|
|
NULL, 0, "UPN_DNS_INFO structure", HFILL }},
|
|
{ &hf_krb_pac_upn_flags, {
|
|
"Flags", "kerberos.pac.upn.flags", FT_UINT32, BASE_HEX,
|
|
NULL, 0, "UPN flags", HFILL }},
|
|
{ &hf_krb_pac_upn_dns_offset, {
|
|
"DNS Offset", "kerberos.pac.upn.dns_offset", FT_UINT16, BASE_DEC,
|
|
NULL, 0, NULL, HFILL }},
|
|
{ &hf_krb_pac_upn_dns_len, {
|
|
"DNS Len", "kerberos.pac.upn.dns_len", FT_UINT16, BASE_DEC,
|
|
NULL, 0, NULL, HFILL }},
|
|
{ &hf_krb_pac_upn_upn_offset, {
|
|
"UPN Offset", "kerberos.pac.upn.upn_offset", FT_UINT16, BASE_DEC,
|
|
NULL, 0, NULL, HFILL }},
|
|
{ &hf_krb_pac_upn_upn_len, {
|
|
"UPN Len", "kerberos.pac.upn.upn_len", FT_UINT16, BASE_DEC,
|
|
NULL, 0, NULL, HFILL }},
|
|
{ &hf_krb_pac_upn_upn_name, {
|
|
"UPN Name", "kerberos.pac.upn.upn_name", FT_STRING, BASE_NONE,
|
|
NULL, 0, NULL, HFILL }},
|
|
{ &hf_krb_pac_upn_dns_name, {
|
|
"DNS Name", "kerberos.pac.upn.dns_name", FT_STRING, BASE_NONE,
|
|
NULL, 0, NULL, HFILL }},
|
|
|
|
#include "packet-kerberos-hfarr.c"
|
|
};
|
|
|
|
/* List of subtrees */
|
|
static gint *ett[] = {
|
|
&ett_kerberos,
|
|
&ett_krb_recordmark,
|
|
&ett_krb_pac,
|
|
&ett_krb_pac_drep,
|
|
&ett_krb_pac_midl_blob,
|
|
&ett_krb_pac_logon_info,
|
|
&ett_krb_pac_s4u_delegation_info,
|
|
&ett_krb_pac_upn_dns_info,
|
|
&ett_krb_pac_server_checksum,
|
|
&ett_krb_pac_privsvr_checksum,
|
|
&ett_krb_pac_client_info_type,
|
|
#include "packet-kerberos-ettarr.c"
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_kerberos_decrypted_keytype, { "kerberos.decrypted_keytype", PI_SECURITY, PI_CHAT, "Decryted keytype", EXPFILL }},
|
|
{ &ei_kerberos_address, { "kerberos.address.unknown", PI_UNDECODED, PI_WARN, "KRB Address: I don't know how to parse this type of address yet", EXPFILL }},
|
|
{ &ei_krb_gssapi_dlglen, { "kerberos.gssapi.dlglen.error", PI_MALFORMED, PI_ERROR, "DlgLen is not the same as number of bytes remaining", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_krb;
|
|
module_t *krb_module;
|
|
|
|
proto_kerberos = proto_register_protocol("Kerberos", "KRB5", "kerberos");
|
|
proto_register_field_array(proto_kerberos, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_krb = expert_register_protocol(proto_kerberos);
|
|
expert_register_field_array(expert_krb, ei, array_length(ei));
|
|
|
|
/* Register preferences */
|
|
krb_module = prefs_register_protocol(proto_kerberos, kerberos_prefs_apply_cb);
|
|
prefs_register_bool_preference(krb_module, "desegment",
|
|
"Reassemble Kerberos over TCP messages spanning multiple TCP segments",
|
|
"Whether the Kerberos dissector should reassemble messages spanning multiple TCP segments."
|
|
" To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
|
|
&krb_desegment);
|
|
#ifdef HAVE_KERBEROS
|
|
prefs_register_bool_preference(krb_module, "decrypt",
|
|
"Try to decrypt Kerberos blobs",
|
|
"Whether the dissector should try to decrypt "
|
|
"encrypted Kerberos blobs. This requires that the proper "
|
|
"keytab file is installed as well.", &krb_decrypt);
|
|
|
|
prefs_register_filename_preference(krb_module, "file",
|
|
"Kerberos keytab file",
|
|
"The keytab file containing all the secrets",
|
|
&keytab_filename);
|
|
#endif
|
|
|
|
}
|
|
static int wrap_dissect_gss_kerb(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree, dcerpc_info *di _U_,guint8 *drep _U_)
|
|
{
|
|
tvbuff_t *auth_tvb;
|
|
|
|
auth_tvb = tvb_new_subset_remaining(tvb, offset);
|
|
|
|
dissect_kerberos_main(auth_tvb, pinfo, tree, FALSE, NULL);
|
|
|
|
return tvb_captured_length_remaining(tvb, offset);
|
|
}
|
|
|
|
|
|
static dcerpc_auth_subdissector_fns gss_kerb_auth_connect_fns = {
|
|
wrap_dissect_gss_kerb, /* Bind */
|
|
wrap_dissect_gss_kerb, /* Bind ACK */
|
|
wrap_dissect_gss_kerb, /* AUTH3 */
|
|
NULL, /* Request verifier */
|
|
NULL, /* Response verifier */
|
|
NULL, /* Request data */
|
|
NULL /* Response data */
|
|
};
|
|
|
|
static dcerpc_auth_subdissector_fns gss_kerb_auth_sign_fns = {
|
|
wrap_dissect_gss_kerb, /* Bind */
|
|
wrap_dissect_gss_kerb, /* Bind ACK */
|
|
wrap_dissect_gss_kerb, /* AUTH3 */
|
|
wrap_dissect_gssapi_verf, /* Request verifier */
|
|
wrap_dissect_gssapi_verf, /* Response verifier */
|
|
NULL, /* Request data */
|
|
NULL /* Response data */
|
|
};
|
|
|
|
static dcerpc_auth_subdissector_fns gss_kerb_auth_seal_fns = {
|
|
wrap_dissect_gss_kerb, /* Bind */
|
|
wrap_dissect_gss_kerb, /* Bind ACK */
|
|
wrap_dissect_gss_kerb, /* AUTH3 */
|
|
wrap_dissect_gssapi_verf, /* Request verifier */
|
|
wrap_dissect_gssapi_verf, /* Response verifier */
|
|
wrap_dissect_gssapi_payload, /* Request data */
|
|
wrap_dissect_gssapi_payload /* Response data */
|
|
};
|
|
|
|
|
|
|
|
void
|
|
proto_reg_handoff_kerberos(void)
|
|
{
|
|
dissector_handle_t kerberos_handle_tcp;
|
|
|
|
krb4_handle = find_dissector("krb4");
|
|
|
|
kerberos_handle_udp = new_create_dissector_handle(dissect_kerberos_udp,
|
|
proto_kerberos);
|
|
|
|
kerberos_handle_tcp = new_create_dissector_handle(dissect_kerberos_tcp,
|
|
proto_kerberos);
|
|
|
|
dissector_add_uint("udp.port", UDP_PORT_KERBEROS, kerberos_handle_udp);
|
|
dissector_add_uint("tcp.port", TCP_PORT_KERBEROS, kerberos_handle_tcp);
|
|
|
|
register_dcerpc_auth_subdissector(DCE_C_AUTHN_LEVEL_CONNECT,
|
|
DCE_C_RPC_AUTHN_PROTOCOL_GSS_KERBEROS,
|
|
&gss_kerb_auth_connect_fns);
|
|
|
|
register_dcerpc_auth_subdissector(DCE_C_AUTHN_LEVEL_PKT_INTEGRITY,
|
|
DCE_C_RPC_AUTHN_PROTOCOL_GSS_KERBEROS,
|
|
&gss_kerb_auth_sign_fns);
|
|
|
|
register_dcerpc_auth_subdissector(DCE_C_AUTHN_LEVEL_PKT_PRIVACY,
|
|
DCE_C_RPC_AUTHN_PROTOCOL_GSS_KERBEROS,
|
|
&gss_kerb_auth_seal_fns);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|