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Date: Fri, 10 Oct 2014 17:59:09 +0200 (CEST)
From: Dhiru Kholia <>
Subject: Cracking VTP authentication hashes with JtR


Recently, I worked with Alexey Lapitsky to add support for cracking VTP
authentication hashes.

$ ../run/ 20-0.0-1412864161.pcap > vtp-hashes

$ ../run/john vtp-hashes -w=wordlist.txt
Loaded 2 password hashes with 2 different salts (vtp, "MD5 based authentication" VTP [MD5 32/64])
Will run 8 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
123              (93)
123              (93) has the latest bits, as usual.

We currently support cracking VTP v1 and v2 hashes. We don't have access
to real Cisco hardware switches to get VTP v3 authentication hashes. Let
us know if you can help here.


PS: Yersinia probably never worked against authenticated VTP. Maybe, now
it will ;)

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