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Message-ID: <0378197F6B2B4B53B756FB8EEBFEB6BE@apple9d23c8f76> Date: Tue, 5 Feb 2013 14:48:53 +0100 From: "JohnyKrekan" <krekan@...nykrekan.com> To: <john-users@...ts.openwall.com> Subject: Re: generating passwords candidates longer than 8 characters using incremental attack Hello, thanx for suggestions so I can experiment. Since I am Delphi/FPC based: what compiler I need to compile John under Windows: Visual CPP or GCC? Jan Krekan ----- Original Message ----- From: "Rich Rumble" <richrumble@...il.com> To: <john-users@...ts.openwall.com> Sent: Tuesday, February 05, 2013 2:16 PM Subject: Re: [john-users] generating passwords candidates longer than 8 characters using incremental attack > On Tue, Feb 5, 2013 at 4:40 AM, JohnyKrekan <krekan@...nykrekan.com> > wrote: >> Hello, after a successfull test with 8 characters password I tried to >> generate longer passwords by setting the incremental section in john.ini >> where > Incremental mode will only create max 8 length passwords by default. > You have to compile John with one tweak to allow for longer passwords, > and then you have to generate the .CHR files for it to use with those > longer settings. >> Why this configuration is not working? >> what should I do to derivate those longer password candidates using >> incremental attack? > Again the .chr files are where john derives it's incremental > candidates, and you have to create your own once you've modified the > params.h file > > #define CHARSET_LENGTH 8 > > Change that to 10, or 12 etc...(whatever number you want up to a point) > Then you can create your own charset files. > http://www.openwall.com/john/doc/EXAMPLES.shtml > In order to generate the chr files you need a large pot file... > To generate a decent pot file for john to use when creating these > charset's try (if on windows find use cygwin) > > cat rockyou.txt | sed 's/^/:/' > custom.pot > > You can use some pre-defined or custom word filters when generating > the charset file to have John consider some simpler passwords only: > john --pot=custom.pot --make-charset=my_alpha.chr > --external=filter_alpha mypasswd.chr > > If your "pot file" got large enough (or if you don't have any charset > files at all), you might want to use it to generate a new set of main > charset files: > > john --pot=custom.pot --make-charset=all.chr > john --pot=custom.pot --make-charset=alnum.chr --external=filter_alnum > john --pot=custom.pot --make-charset=alpha.chr --external=filter_alpha > john --pot=custom.pot --make-charset=digits.chr --external=filter_digits > john --pot=custom.pot --make-charset=lanman.chr --external=filter_lanman > > Those commands are specifying the pot file to use, john will default > to john.pot if you do not specify another. You can find rockyou.txt > and other good wordlists all over the internet have a look here for a > bunch of links: http://www.openwall.com/wordlists/ Note that the > commands above will overwrite the existing all, alnum, alpha, digits, > and lanman.chr files. > -rich
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