pcapparse

PCAPparse

The program parses the given pcap file trying to extract the ntlm challenge response or ftp user and password. (Was written to crack FRA challenge 2015, part 4).

Adding kerberos v5 parsing using asn.1 parser, mostly to learn how this is done. It is experimental and at the moment only looks for kerberos UDP requests on port 88.

Dependencies

Pcap parse requires gopacket. To compile gopacket header files from pcaplib need to be installed.

Installation

$ go get -u github.com/chrjoh/pcapparse

Usage

$ pcapparse --help

Command line arguments:

  -i "steg3.pcap": Input file (.pcap)
  -o "output_steg3.lc": Output file (.lc)
  -t "ntlm" select what type to look for in the pcap file: ntlm, ftp or krb5

License (MIT)

Copyright (c) 2015 Christer Johansson

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.