john-users - Re: "Extra" in incremental mode not fully working

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Date: Fri, 25 Aug 2006 17:04:56 +0530
From: "rushi harkal" <rharkal@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: "Extra" in incremental mode not fully working

hi, can i get some information .....

 1. how can i get SAM data base without Admin rights,

2. How 2 encrypt the pass word hashesh

(I dont wann to break password by using JOHN RIPPER)

please give me exact Software/Tool/Tutor

 Thanx in ADVANCE

On 8/23/06, Solar Designer <solar@...nwall.com> wrote:
>
> On Tue, Aug 22, 2006 at 06:05:09PM +0000, Radim wrote:
> > I've recently tested something like this:
> >
> > File = $JOHN/alpha.chr
> > MinLen = 0
> > MaxLen = 5
> > Extra = ...
>
> Your message has arrived with charset=utf-8.  Although you've mentioned
> that you've been using "codepage win1250", I am not sure what 8-bit
> character values you actually had in your john.conf.
>
> > and then only some of the national characters were processed properly
>
> What version of John?
>
> Anyway, this should have worked as long as the total number of different
> characters (those coming from the .chr file and those you've added with
> Extra) doesn't exceed CHARSET_SIZE (95 by default).
>
> > It brings me to another question: Is there an easy way to hack the
> params.h to
> > enable national characters in charset files?
>
> You can try these settings:
>
> #define CHARSET_MIN                     ' '
> #define CHARSET_MAX                     0xFF
> #define CHARSET_SIZE                    (CHARSET_MAX - CHARSET_MIN + 1)
> #define CHARSET_LENGTH                  8
> #define CHARSET_SCALE                   0x10
>
> that is, you change CHARSET_MAX from 0x7E to 0xFF and CHARSET_SCALE from
> 0x100 to 0x10, leaving the rest at the defaults.  Of course, you'll be
> forced to generate new .chr files.
>
> Some john-users might notice that with the above settings we're
> actually slightly exceeding 64 bits for ((SIZE ** LENGTH) * SCALE),
> which the comment say to not do.  However, in reality the requirement is
> not so strict; I just picked a simpler description for the comment.  The
> self-test performed by current versions of JtR makes sure that things
> don't go wrong - if there are overflows, JtR will refuse to generate
> charset files rather than generate them incorrectly.
>
> --
> Alexander Peslyak <solar at openwall.com>
> GPG key ID: B35D3598  fp: 6429 0D7E F130 C13E C929  6447 73C3 A290 B35D
> 3598
> http://www.openwall.com - bringing security into open computing
> environments
>
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