Local fork of Henryk Ploetz' smardcard shell
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cyberflex-shell/parse-usbsnoop.py

72 lines
2.6 KiB

#!/usr/bin/env python
# -*- coding: iso-8859-1 -*-
import sys, utils, binascii
def parse_file(fname):
fp = file(fname)
in_block = False
is_rfid = False
line_no = 0
direction = 0
data = []
last_was_transfer_buffer = False
for line in fp.readlines():
if not in_block:
if last_was_transfer_buffer:
parts = line.split(":")
if parts[0] == " 00000000":
if parts[1][:3] == " 6f":
in_block = True
direction = 0
line_no = 0
is_rfid = False
data = []
elif parts[1][:3] == " 80":
in_block = True
direction = 1
line_no = 0
is_rfid = False
data = []
elif parts[1][:3] == " 6b":
in_block = True
direction = 0
line_no = 0
is_rfid = True
data = []
elif parts[1][:3] == " 83":
in_block = True
direction = 1
line_no = 0
is_rfid = True
data = []
if in_block and (not is_rfid or line_no > 0):
data = [ parts[1][31:] ]
else:
if not ":" in line:
in_block = False
data_binary = binascii.a2b_hex("".join("".join(data).split()))
if not is_rfid:
print (direction and "<< " or ">> ") + utils.hexdump(data_binary, indent=3)
if direction == 1: print
elif len("".join(data).strip()) > (direction == 0 and 8 or 2) and data_binary not in ("\x00"*5, "\x70\x08\x35\x2d\x66\x76", "\x43\x4f\x53\x73\x01\x02\x01"):
print (direction and "<EFBFBD><EFBFBD> " or "<EFBFBD><EFBFBD> ") + utils.hexdump(data_binary, indent=3)
if direction == 1: print
else:
line_no = line_no + 1
if (not is_rfid or line_no > 1):
data.append( line.split(":")[1] )
elif is_rfid and line_no == 1:
data.append( line.split(":")[1][6:] )
last_was_transfer_buffer = "TransferBufferMDL" in line
if __name__ == "__main__":
if len(sys.argv) != 2:
print >>sys.stderr, "Need one argument"
sys.exit(1)
parse_file(sys.argv[1])