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Message-ID: <CAEo4CeP4cQPpCkcppBXcWqJauTmRHXm-4oniQ-Lphh23JPw3gA@mail.gmail.com>
Date: Tue, 21 Jul 2020 23:15:22 +0200
From: Albert Veli <albert.veli@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: Known part of password, attempting incremental attack
On Tue, Jul 21, 2020 at 8:25 PM Alexander Hunt <alexhunt308@...il.com>
wrote:
> He knows the first 5 characters and the last 2 char. for sure. He believes
> there is one word (possibly two)
> between the first 5 and the last 2. He believes it is a dictionary word so
> I started with a Wordlist attack with a dictionary list I pulled off the
> internet, and the parameters he set. That didnt work so I would like to set
> up a incremental attack to determine the 5-10 characters in between the
> characters he knows. Is this possible?
>
Sure, but 10 characters will take extremely long time. If the first
characters are "abcde" and the last two "yz" you could run like:
john ... -mask:abcde?a?a?a?a?ayz to try all combinations of 5 upper, lower,
digits and special characters. See the documentation for more options.
https://github.com/magnumripper/JohnTheRipper/blob/bleeding-jumbo/doc/MASK
When that attack is done you could run with 6 characters and so on. To run
with a wordlist use ?w to insert all words from the wordlist, one at a time.
But I would create a big wordlist of all combinations of two words and use
that as input to john and use ?w in the mask. That will be much faster than
trying to brute force all combinations of up to 10 characters.
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