Date: Fri, 25 Jan 2008 16:16:30 +0300 From: Solar Designer <solar@...nwall.com> To: john-users@...ts.openwall.com Subject: Re: custom character set On Thu, Jan 24, 2008 at 02:14:38PM -0500, Adam Turk wrote: > What I am trying to do is crack my password. If you have physical access to the system, it is probably more straightforward to change the password. > I know what characters are in it so I would like to limit the character list to those characters (tjesTJES) and a length of 10. What hash type? (Some truncate or split passwords after a certain length, some are case-insensitive.) Does the password really use at least two (or exactly two?) of those characters more than once (only 8 different characters, but length 10)? > [Incremental:MODE] > File = $JOHN/cust.chr > MinLen = 10 > MaxLen = 10 > CharCount = 8 This won't work unless you adjust params.h and re-compile JtR. By default, JtR's "incremental mode" is limited to lengths up to 8 at compile time. See: http://www.openwall.com/lists/john-users/2007/07/04/6 Another option is for you to define and use an external mode (then there's no need to re-compile JtR and to generate a custom charset). > to my john.ini file but I don't know how to limit the character set. How can I tell john to only use tjesTJES as a character set? You can create a fake john.pot file with the following contents: :t :j :e :s :T :J :E :S Then generate a charset file as usual (according to the documentation). -- Alexander Peslyak <solar at openwall.com> GPG key ID: 5B341F15 fp: B3FB 63F4 D7A3 BCCC 6F6E FC55 A2FC 027C 5B34 1F15 http://www.openwall.com - bringing security into open computing environments Was I helpful? Please give your feedback here: http://rate.affero.net/solar -- To unsubscribe, e-mail john-users-unsubscribe@...ts.openwall.com and reply to the automated confirmation request that will be sent to you.
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