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Date: Thu, 20 Dec 2012 21:37:45 +0100
From: magnum <>
Subject: Re: Rulesets combination and logs

On 20 Dec, 2012, at 17:14 , vadim vitaly <> wrote:
> Here are two features requests for john. By feature request, i mean ideas
> for those who have the time, will and skills to dev something new for john
> (thanks to them).
> First, it would be great to have the possibility to combine various
> rulesets when starting a cracking job.
> I mean something like that:
> ./john hashfile -rules:best.rules -rules:leetspeak.rules -w:wordlist
> This way it would be easier to crack password which are the result of two
> rules (or more!),  for example: n1nt3nd0!2012 (leetspeak + append
> special4num) and keeping at the same time a clear and simple rulesets in my
> john.conf.

This has been discussed and is already on various wish-lists, including the one I use for not forgetting about things:

> The other feature request is the possibility to have more verbose log.
> Particularly, when cracking a password using wordlist and rules. It would
> be great to have information like the original word used and the rule
> applied.
> The idea here is to make better stats about which combinations of word and
> rules are the more efficient (and the same way which rules are absolutely
> not efficient).
> I know it is already possible to have the rule used to cracked a password
> in the john.log file, would it be possible to also add the original
> candidate word ?
> Something like that would be perfect for parsing:
> 15 0:01:17:13 + Cracked bobama_history0 (password / originalword / rule)

That would be nice, yes. But it's not very easy to accomplish - at the time we get a successful guess we no longer "know" what rule or word created a certain candidate (due to buffers and stuff). We could add code for it, but it would hit performance.

You can use --mkpc=1 for getting a 1:1 between rules and guesses in the log, but that too hits performance (sometimes a lot).


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