NTLMRawUnhide.py

Author : Mike Gualtieri
Blog : https://www.mike-gualtieri.com
Twitter : https://twitter.com/mlgualtieri
GitHub : https://github.com/mlgualtieri/NTLMRawUnhide
Write up: https://www.mike-gualtieri.com/posts/live-off-the-land-and-crack-the-ntlmssp-protocol

Intro

NTLMRawUnhide.py is a Python3 script designed to parse network packet capture files and extract NTLMv2 hashes in a crackable format. The tool was developed to extract NTLMv2 hashes from files generated by native Windows binaries like NETSH.EXE and PKTMON.EXE without conversion.

The following binary network packet capture formats are supported: * *.pcap * *.pcapng * *.cap * *.etl

Usage

Usage: NTLMRawUnhide.py -i  [-o ] [-f] [-h] [-q] [-v]

Main options:
  -f, --follow               Continuously "follow" (e.g. "read from")
                             input file for new data
  -h, --help
  -i, --input     Binary packet data input file
                             (.pcap, .pcapng, .cap, .etl, others?)
  -o, --output   Output file to record any found NTLM
                             hashes
  -q, --quiet                Be a lot more quiet and only output
                             found NTLM hashes. --quiet will also
                             disable verbose, if specified.
  -v, --verbose

Examples

Extract NTLMv2 hashes from examples/capture.pcap:

python3 NTLMRawUnhide.py -i examples/capture.pcap

python3 NTLMRawUnhide.py -i examples/capture.pcap -v

python3 NTLMRawUnhide.py -i examples/capture.pcap -f

python3 NTLMRawUnhide.py -i examples/capture.pcap -o /tmp/hashes.txt

Packet Capture Methods

To create a compatible packet capture file, any of the following methods can be used:

• Wireshark:

  Set capture filter as "tcp port 445"; Save as .pcapng
  

• tcpdump

  tcpdump -i eth0 -w capture.pcap "port 445"
  

• NETSH.EXE

  netsh.exe trace start persistent=yes capture=yes TCP.AnyPort=445 tracefile=C:\Users\Public\capture.etl
  netsh.exe trace stop
  

• PKTMON.EXE

  pktmon.exe filter add SMB -p 445
  :: List all filters 
  pktmon.exe filter list
  :: Find id of the network adapter (example > Id: 9)
  pktmon.exe comp list
  :: pktmon.exe start --etw -p 0 -c [Adapter ID]     
  pktmon.exe start --etw -p 0 -c 9 
  :: Will create the file PktMon.etl in current directory
  pktmon.exe stop
  :: Cleanup
  pktmon.exe filter remove
  

References

The following URL was very helpful when building this tool: The NTLM Authentication Protocol and Security Support Provider http://davenport.sourceforge.net/ntlm.html