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Message-ID: <20100418232254.GA17817@openwall.com>
Date: Mon, 19 Apr 2010 03:22:54 +0400
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: duplicate 2 latest digits
On Sun, Apr 18, 2010 at 10:37:49PM +0200, websiteaccess@...il.com wrote:
> I would like duplicate 2 times the last 2 digits .
> wordlist : john
>
> john + (from 00 to 99)
> john -> john000000 to john 999999
Here's the ruleset line to do what you need:
Az"[0-9][0-9]\1\2\1\2"
It produces:
john000000
john010101
john020202
...
john090909
john101010
john111111
...
john979797
john989898
john999999
words: 100 time: 0:00:00:00 100% w/s: 10000 current: john999999
You may also prefix the line with a length check such that you do not
try adding the 6-character strings to words that are already too long.
For example, to ensure there's room for at least two characters:
<- Az"[0-9][0-9]\1\2\1\2"
or to ensure there's room for at least three characters (such that the
resulting candidate passwords will be different from those produced by
an append-two-digits ruleset line, which is probably also present):
va*2 <a Az"[0-9][0-9]\1\2\1\2"
or to ensure there's room for all 6 characters:
va*5 <a Az"[0-9][0-9]\1\2\1\2"
or just restrict this to short words (irrespective of what the target
hash type's length limit is):
<7 Az"[0-9][0-9]\1\2\1\2"
or combine both kinds of restrictions:
<7 va*2 <a Az"[0-9][0-9]\1\2\1\2"
This kind of complexity may be beneficial in "universal" rulesets that
are meant to be near-optimal for all hash types.
Alexander
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