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Date: Thu, 15 Nov 2012 17:48:01 +0400
From: Aleksey Cherepanov <>
Subject: Re: LM with empty strings = password longer than 15

On Thu, Nov 15, 2012 at 02:28:59PM +0100, john wittgeinstein wrote:
> The conclusion would be that Win7 by default uses empty LM hash. Theres no indication (considering the NT hash) that it is 15> chars?
>  Enforce --format=nt2 in john and happy hunting! :)

Yes, by default win7 uses empty LM hash and password could be of any

You could use either nt or nt2 format depending on what is faster for
you (c/s rate in John's status report).

Aleksey Cherepanov

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