john-users - Re: my incremental mode

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Date: Fri, 20 Feb 2009 02:19:50 +0300
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: my incremental mode

On Thu, Feb 19, 2009 at 11:56:45PM +0100, antuan 55 wrote:
> How can I create a incremental mode that has eight characters with minuscule
> letters and numbers only?
> 
> ex:
> 
> #john -i:8char_alphaMin_num -stdout
> 
>  qwerty54
>  h3ll0bro
>  people21
>  h4ouseee

The pre-defined Alnum mode (and the included alnum.chr that it uses)
does just that, for lengths 1 to 8.  If you need to "lock" it to length
8 only, then you do it by changing "MinLen = 1" to "MinLen = 8".  Rather
than alter the existing Alnum mode, you may in fact define a new one:

[Incremental:Alnum8]
File = $JOHN/alnum.chr
MinLen = 8
MaxLen = 8
CharCount = 36

The alnum.chr file stays the same.

On the command line, you'll use "john -i=Alnum8 ..." (with whatever
other options you need and with password file names given).

Alexander

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