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Date: Wed, 8 May 2024 07:34:41 -0500
From: Adam Lininger <arlininger@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: Markov phrases in john
Take a look at https://github.com/travco/rephraser.
It was made by a friend of mine and intended to use markov chains to
generate word phrases.
Adam
On Wed, May 8, 2024 at 5:34 AM Albert Veli <albert.veli@...il.com> wrote:
> Hi, as many of you know a mask will not try combinations of characters
> in alphabetical order but rather in the most likely to least likely order
> using something like Markov chains:
>
> ./john --stdout --mask='?l?l'
> aa
> ea
> ia
> oa
> na
> ra
> la
> sa
> ...
>
>
> This is useful to find human-created passwords early. Nowadays it is more
> and more popular to use combinations of words to create passwords. Would
> it be possible to use Markov or similar to traverse entire words from a
> wordlist and use the most common pair of adjacent words from the list
> first, then the second most common and so on?
>
> Like Markov does for individual characters, but on entire words instead?
> I hope you understand what I mean. Then maybe extend this to three
> words. It is possible with the '?l?l?l' mask so in some way it should be
> possible to do for entire words too. Ideally there would be an option to
> specify word delimiter too. Maybe even an option to provide a corpus text
> to train the chains on. Then an option to specify how many words to
> include in the guesses, the top 100 words, the top 500 words or the top
> 2000 words and so on. For two word combinations you can use a larger
> number and for three or four words, smaller numbers.
>
> What do you think? Would this be useful, or is it possible now already?
>
>
> Regards,
>
> Albert
>
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