Date: Wed, 21 Nov 2012 20:03:04 +0100 From: magnum <john.magnum@...hmail.com> To: john-users@...ts.openwall.com Subject: Re: How does incremental mode works? On 21 Nov, 2012, at 18:01 , Matt Weir <cweir@...edu> wrote: >> Do you have any reference or example of these policy filter or equivalent >> solutions being used to generate such kind of specific candidate passwords >> for jTr running with incremental mode? > > So in the official EXAMPLES readme for JTR, (found in the doc > directory of your install or online at > http://www.openwall.com/john/doc/EXAMPLES.shtml), give an example on > how to apply policy rules to incremental mode. > > -Begin Quote-- > You can use some pre-defined or custom word filters when generating > the charset file to have John consider some simpler passwords only: > john --make-charset=my_alpha.chr --external=filter_alpha mypasswd > -End Quote--- > > Now that is for trying only simple passwords, but you could use an > external mode to only build charsets based on more complicated > passwords as well, (aka must be at least 8 chars, contain an uppercase > character + digit). Included in Jumbo (and core too I think), there is also an --external=policy mode that is defined in john.conf and that you can modify to suit your needs. This does exactly what you ask for. magnum
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