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Date: Sat, 27 Jul 2013 09:55:21 +0200
From: magnum <john.magnum@...hmail.com>
To: john-users@...ts.openwall.com
Subject: Re: Rule-derived guesses after wordlist?

On 25 Jul, 2013, at 20:47 , Rafael Veras <rafaveguim@...il.com> wrote:
> While running JtR in wordlist mode with rules, I expected that, given a
> word, the guesses derived from it were tried immediately after its original
> form.
> 
> Assuming a wordlist [password, letmein], the guesses would be:
> 
> password
> Password
> letmein
> Letmein
> 
> Where "Password" and "Letmein" are the derived guesses.

Assuming your first rule is ':' (no-op) and/or your rules are sorted as most likely first, that behaviour would be suboptimal.

> However, I found that the guesses derived from the rules are actually tried
> after the entire wordlist has been guessed, like:
> 
> password
> letmein
> Password
> Letmein
> 
> Is there any parameter I can use to produce the first behavior?

Not currently but due to other changes (eg. rules x rules) it might be supported later. Coincidentally, I believe this would also be slower in most use cases.

magnum

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