passwords - Derive stats/rules/masks from a bunch of plains

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Message-Id: <40F509AC-A76F-44AA-B72A-0DF2D665E637@patpro.net>
Date: Fri, 10 Jun 2016 20:19:22 +0200
From: Patrick Proniewski <patpro@...pro.net>
To: passwords@...ts.openwall.com
Subject: Derive stats/rules/masks from a bunch of plains

Hello,

(xpost on john-users)

I've got a bunch of plains. About 1500 of them are 8 char long, mostly random and issued at account creation and not changed since. The 12000 other plains are user-picked after account creation, ranging from 9 to 49 char long.

What would be the best tool(s) to derive interesting stuffs from these plains like rules/masks/statistics…? Anything that would help me optimize cracking sessions would be great (these are not supposed to be plains, I plan to make a password audit by cracking their hash counterparts, and I've got about 24000 more hashed passwords from same source).

I've given PACK a try, but I'm not very happy with the result. May be I'm using it the wrong way.

thanks,
pat

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