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Date: Thu, 15 Nov 2012 23:25:24 +0100
From: magnum <john.magnum@...hmail.com>
To: john-users@...ts.openwall.com
Subject: Re: cracking passwords with a kerberos traffic dump
On 15 Nov, 2012, at 22:59 , buawig <buawig@...il.com> wrote:
> Hi,
>
> given an complete traffic dump from a client authenticating to a
> kerberos server (classical windows domain setup) it should be possible
> to perform offline dictionary attacks, right?
>
> Does john support that kind of attack?
> Is it limited to specific kerberos encryption types? (DES only?)
>
> I suppose tgtsnarf (which comes with john) is not an option if the KDC
> requires PREAUTH.
>
> Seaching for a solution I found only:
> http://www.openwall.com/lists/john-users/2010/06/21/1
>
> thanks in advance.
Unless I misunderstand the "windows domain" part of what you say above, you should use the mskrb5 format. Even though I am the author of that format I actually do not remember what tool would be best for converting a pcap file to a usable input file. Perhaps Cain does that. Or maybe I just copy/pasted stuff from Ethereal. Perhaps someone should write a pcap2mskrb5 tool...
magnum
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