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Date: Thu, 16 Apr 2015 22:13:33 +0100
From: JJ Gray <jj.gray@....qinetiq-tim.com>
To: john-users@...ts.openwall.com
Subject: Re: NTLM proxy auth

On 16/04/2015 12:49, Micha Borrmann wrote:
> Hello,
> 
> I've captured authentication data to a proxy with NTLM authentication, like
> 
> GET /dummy HTTP/1.0
> Host: www.dummy.net
> Proxy-Authorization: NTLM TlRMTVNTUAABAAA...AAAAAAA=
[..]
> I have the data in pcap (or txt) file. How I can convert it to use it
> with JtR? 

You have a couple of options: convert the values from Base64 to Hex or
fire the pcap into Ettercap -r and it should convert it to the
"standard" hex format (I tend to do that for a multiple users). Then
it's simply looking at what the JtR format is for that particular
version of NETLM. Personally, with each new revision of JtR I just run
something like:

C:\CLI Tools\John>john.exe --list=format-all-details >
jtr_hash_formats.txt and use that text file as a reference since I can't
remember all of the hash formats, or you could do this on the fly with
something like:

C:\CLI Tools\John>john.exe --list=format-all-details | grep -E "Format
label|Example ciphertext" | grep -A 1 'netnt'
Format label                         netntlmv2
Example ciphertext
USER1::Domain:1122334455667788:5E4AB1BF243DCA304A00ADEF78DC38DF:0101000000000000BB50305495AACA01338BC7B090A6285600000000020
0120057004F0052004B00470052004F00550050000000000000000000
Format label                         netntlm
Example ciphertext
$NETNTLM$1122334455667788$BFCCAF26128EC95F9999C9792F49434267A1D9B0EF89BFFB
Format label                         netntlm-naive
Example ciphertext
User:::lm-hash:35B62750E1B9B3205C50D6BA351092C12A1B9B3CDC65D44A:1122334455667788

Or a combination thereof.

Cheers,
		JJ


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