john-users - how to parse passwords with some known letters

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Date: 26 Jul 2008 19:38:00 +0200
From: "Helmut Hullen" <Hullen@...nline.de>
To: john-users@...ts.openwall.com
Subject: how to parse passwords with some known letters

Hallo,

I'm working on passwords which have been generated with "pwgen" (8  
characters, 1 BIG letter, at least 1 number).
I restore them from the slapcat output (single sign on) via LM and NTLM  
(works fine).

I've seen that about 10% of the restored passwords end with "oo" (7 or 8  
characters), and about 30% contain somewhere "oo".

Can I tell "John" at least the case that many passwords may end with  
"oo"?

I've studied
  http://article.gmane.org/gmane.comp.security.openwall.john.user/1662
  http://www.openwall.com/lists/john-users/2008/05/20/2
  http://www.openwall.com/lists/john-users/2008/03/31/1

but (sorry) I didn't understand how to make rules for this case.

Viele Gruesse!
Helmut

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