443a7ed259
Some of the ASN.1 dissectors still generate a new_create_dissector_handle from the tool itself, so leave those for now. Change-Id: Ic6e5803b1444d7ac24070949f5fd557909a5641f Reviewed-on: https://code.wireshark.org/review/12484 Petri-Dish: Anders Broman <a.broman58@gmail.com> Reviewed-by: Michael Mann <mmann78@netscape.net>
360 lines
12 KiB
C
360 lines
12 KiB
C
/* packet-sebek.c
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* Routines for Sebek - Kernel based data capture - packet dissection
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* Modified to add sebek V3
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* Copyright 2006, Camilo Viecco <cviecco@indiana.edu>
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* Copyright 1999, Nathan Neulinger <nneul@umr.edu>
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*
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* See: http://project.honeynet.org/tools/sebek/ for more details
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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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#include "config.h"
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#include <math.h>
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#include <epan/packet.h>
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/*
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Sebek v2:
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IP address: 32bit unsigned
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MAGIC Val: 32bit unsigned
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Sebek Ver: 16bit unsigned #value must match 2
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Type 16bit unsigned
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Counter: 32bit unsigned
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Time_sec: 32bit unsigned
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Time_usec: 32bit unsigned
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Proc ID: 32bit unsigned
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User ID: 32bit unsigned
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File Desc: 32bit unsigned
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Command: 12char array
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Length: Data Length
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Data: Variable Length data
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Sebek v3 header
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IP address: 32bit unsigned
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MAGIC Val: 32bit unsigned
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Sebek Ver: 16bit unsigned #value must match 3
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Type 16bit unsigned
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Counter: 32bit unsigned
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Time_sec: 32bit unsigned
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Time_usec: 32bit unsigned
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Parent_pid: 32bit unsigned
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Proc ID: 32bit unsigned
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User ID: 32bit unsigned
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File Desc: 32bit unsigned
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inode: 32bit unsigned
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Command: 12char array
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Length: Data Length
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Data: Variable data length
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Sebekv3 has a sock_socket_record subheader for IPV4:
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Dest_ip: 32bit unsigned
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Dest_port: 16bit unsigned
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Src_ip: 32bit unsigned
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src_port: 16bit unsigned
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call: 16bit unsigned
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proto 8bit unsigned
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*/
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/* By default, but can be completely different */
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#define UDP_PORT_SEBEK 1101
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void proto_register_sebek(void);
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void proto_reg_handoff_sebek(void);
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static int proto_sebek = -1;
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static int hf_sebek_magic = -1;
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static int hf_sebek_version = -1;
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static int hf_sebek_type = -1;
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static int hf_sebek_counter = -1;
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static int hf_sebek_time = -1;
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static int hf_sebek_pid = -1;
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static int hf_sebek_uid = -1;
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static int hf_sebek_fd = -1;
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static int hf_sebek_cmd = -1;
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static int hf_sebek_len = -1;
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static int hf_sebek_data = -1;
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static int hf_sebek_ppid = -1;
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static int hf_sebek_inode = -1;
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static int hf_sebek_socket_src_ip=-1;
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static int hf_sebek_socket_src_port=-1;
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static int hf_sebek_socket_dst_ip=-1;
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static int hf_sebek_socket_dst_port=-1;
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static int hf_sebek_socket_call=-1;
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static int hf_sebek_socket_proto=-1;
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static gint ett_sebek = -1;
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/* dissect_sebek - dissects sebek packet data
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* tvb - tvbuff for packet data (IN)
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* pinfo - packet info
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* proto_tree - resolved protocol tree
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*/
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static int
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dissect_sebek(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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proto_tree *sebek_tree;
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proto_item *ti;
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int offset = 0;
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nstime_t ts;
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int sebek_ver = 0;
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int sebek_type = 0;
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int cmd_len = 0;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "SEBEK");
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col_set_str(pinfo->cinfo, COL_INFO, "SEBEK - ");
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if (tvb_captured_length(tvb)<6)
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sebek_ver = 0;
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else
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sebek_ver = tvb_get_ntohs(tvb, 4);
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switch (sebek_ver) {
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case 2: col_append_fstr(pinfo->cinfo, COL_INFO, " pid(%d)", tvb_get_ntohl(tvb, 20));
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col_append_fstr(pinfo->cinfo, COL_INFO, " uid(%d)", tvb_get_ntohl(tvb, 24));
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col_append_fstr(pinfo->cinfo, COL_INFO, " fd(%d)", tvb_get_ntohl(tvb, 28));
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col_append_fstr(pinfo->cinfo, COL_INFO, " cmd: %s", tvb_format_text(tvb, 32, 12));
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break;
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case 3: col_append_fstr(pinfo->cinfo, COL_INFO, " pid(%d)", tvb_get_ntohl(tvb, 24));
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col_append_fstr(pinfo->cinfo, COL_INFO, " uid(%d)", tvb_get_ntohl(tvb, 28));
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col_append_fstr(pinfo->cinfo, COL_INFO, " fd(%d)", tvb_get_ntohl(tvb, 32));
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cmd_len = tvb_strnlen(tvb, 40, 12);
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if (cmd_len<0)
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cmd_len = 0;
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col_append_fstr(pinfo->cinfo, COL_INFO, " cmd: %s", tvb_format_text(tvb, 40, cmd_len));
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break;
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default:
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break;
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}
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if (tree) {
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/* Adding Sebek item and subtree */
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ti = proto_tree_add_item(tree, proto_sebek, tvb, 0, -1, ENC_NA);
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sebek_tree = proto_item_add_subtree(ti, ett_sebek);
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/* check for minimum length before deciding where to go*/
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if (tvb_captured_length(tvb)<6)
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sebek_ver = 0;
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else
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sebek_ver = tvb_get_ntohs(tvb, 4);
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switch (sebek_ver) {
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case 2: proto_tree_add_item(sebek_tree, hf_sebek_magic, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_version, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(sebek_tree, hf_sebek_type, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(sebek_tree, hf_sebek_counter, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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ts.secs = tvb_get_ntohl(tvb, offset);
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ts.nsecs = tvb_get_ntohl(tvb, offset+4);
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proto_tree_add_time(sebek_tree, hf_sebek_time, tvb, offset, 8, &ts);
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offset += 8;
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proto_tree_add_item(sebek_tree, hf_sebek_pid, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_uid, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_fd, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_cmd, tvb, offset, 12, ENC_ASCII|ENC_NA);
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offset += 12;
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proto_tree_add_item(sebek_tree, hf_sebek_len, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_data, tvb, offset, -1, ENC_ASCII|ENC_NA);
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break;
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case 3: proto_tree_add_item(sebek_tree, hf_sebek_magic, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_version, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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sebek_type=tvb_get_ntohs(tvb, offset);
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proto_tree_add_item(sebek_tree, hf_sebek_type, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(sebek_tree, hf_sebek_counter, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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ts.secs = tvb_get_ntohl(tvb, offset);
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ts.nsecs = tvb_get_ntohl(tvb, offset+4);
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proto_tree_add_time(sebek_tree, hf_sebek_time, tvb, offset, 8, &ts);
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offset += 8;
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proto_tree_add_item(sebek_tree, hf_sebek_ppid, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_pid, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_uid, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_fd, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_inode, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_cmd, tvb, offset, 12, ENC_ASCII|ENC_NA);
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offset += 12;
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proto_tree_add_item(sebek_tree, hf_sebek_len, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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if (sebek_type == 2) {
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/*data is socket data, process accordingly*/
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proto_tree_add_item(sebek_tree, hf_sebek_socket_dst_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_socket_dst_port, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(sebek_tree, hf_sebek_socket_src_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(sebek_tree, hf_sebek_socket_src_port, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(sebek_tree, hf_sebek_socket_call, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(sebek_tree, hf_sebek_socket_proto, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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} else {
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proto_tree_add_item(sebek_tree, hf_sebek_data, tvb, offset, -1, ENC_ASCII|ENC_NA);
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}
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break;
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default:
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break;
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}
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}
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return offset;
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}
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void
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proto_register_sebek(void)
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{
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static hf_register_info hf[] = {
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{ &hf_sebek_magic, {
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"Magic", "sebek.magic", FT_UINT32, BASE_HEX,
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NULL, 0, "Magic Number", HFILL }},
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{ &hf_sebek_version, {
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"Version", "sebek.version", FT_UINT16, BASE_DEC,
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NULL, 0, "Version Number", HFILL }},
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{ &hf_sebek_type, {
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"Type", "sebek.type", FT_UINT16, BASE_DEC,
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NULL, 0, NULL, HFILL }},
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{ &hf_sebek_counter, {
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"Counter", "sebek.counter", FT_UINT32, BASE_DEC,
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NULL, 0, NULL, HFILL }},
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{ &hf_sebek_time, {
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"Time", "sebek.time.sec", FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL,
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NULL, 0, NULL, HFILL }},
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{ &hf_sebek_pid, {
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"Process ID", "sebek.pid", FT_UINT32, BASE_DEC,
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NULL, 0, NULL, HFILL }},
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{ &hf_sebek_uid, {
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"User ID", "sebek.uid", FT_UINT32, BASE_DEC,
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NULL, 0, NULL, HFILL }},
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{ &hf_sebek_fd, {
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"File Descriptor", "sebek.fd", FT_UINT32, BASE_DEC,
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NULL, 0, "File Descriptor Number", HFILL }},
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{ &hf_sebek_cmd, {
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"Command Name", "sebek.cmd", FT_STRING, BASE_NONE,
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NULL, 0, NULL, HFILL }},
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{ &hf_sebek_len, {
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"Data Length", "sebek.len", FT_UINT32, BASE_DEC,
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NULL, 0, NULL, HFILL }},
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{ &hf_sebek_ppid, {
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"Parent Process ID", "sebek.ppid", FT_UINT32, BASE_DEC,
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NULL, 0, "Process ID", HFILL }},
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{ &hf_sebek_inode, {
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"Inode ID", "sebek.inode", FT_UINT32, BASE_DEC,
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NULL, 0, "Process ID", HFILL }},
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{ &hf_sebek_data, {
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"Data", "sebek.data", FT_STRING, BASE_NONE,
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NULL, 0, NULL, HFILL }},
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{ &hf_sebek_socket_src_ip, {
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"Socket.local_ip", "sebek.socket.src_ip", FT_IPv4, BASE_NONE,
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NULL, 0, "Socket.src_ip", HFILL }},
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{ &hf_sebek_socket_src_port, {
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"Socket.local_port", "sebek.socket.src_port", FT_UINT16, BASE_DEC,
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NULL, 0, "Socket.src_port", HFILL }},
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{ &hf_sebek_socket_dst_ip, {
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"Socket.remote_ip", "sebek.socket.dst_ip", FT_IPv4, BASE_NONE,
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NULL, 0, "Socket.dst_ip", HFILL }},
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{ &hf_sebek_socket_dst_port, {
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"Socket.remote_port", "sebek.socket.dst_port", FT_UINT16, BASE_DEC,
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NULL, 0, "Socket.dst_port", HFILL }},
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{ &hf_sebek_socket_call, {
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"Socket.Call_id", "sebek.socket.call", FT_UINT16, BASE_DEC,
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NULL, 0, "Socket.call", HFILL }},
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{ &hf_sebek_socket_proto, {
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"Socket.ip_proto", "sebek.socket.ip_proto", FT_UINT8, BASE_DEC,
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NULL, 0, NULL, HFILL }}
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};
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static gint *ett[] = {
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&ett_sebek
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};
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proto_sebek = proto_register_protocol("SEBEK - Kernel Data Capture", "SEBEK", "sebek");
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proto_register_field_array(proto_sebek, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_sebek(void)
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{
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dissector_handle_t sebek_handle;
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sebek_handle = create_dissector_handle(dissect_sebek, proto_sebek);
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dissector_add_uint("udp.port", UDP_PORT_SEBEK, sebek_handle);
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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