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Message-ID: <20061223192027.012210.f050b54f@gmail.com>
Date: Sat, 23 Dec 2006 19:20:27 +0100
From: websiteaccess <websiteaccess@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: Need Help with JTR's rules
On Sat, 23 Dec 2006 20:19:03 +0300, Solar Designer wrote:
> On Sat, Dec 23, 2006 at 03:35:25PM +0100, websiteaccess wrote:
>> I would like a word of 4 charaters (for example : "wolf") become
>> "wwoollff"
>
> There's no convenient way to do that, so we have to resort to hacks like
> the following four rules:
>
> <2d
> >1<3f}
> >2<4f}fD3D3D3'6
> >3<5f}ffD3D3D3D3D3D5D5D6D6D6D6D6D6D6'8
>
> for lengths up to 4 (or for the resulting candidate passwords of lengths
> up to 8).
>
>> I have tested (and many others) "x11d Mx21d Mx31d Mx41d"
>
> This doesn't make sense. The "x" command leaves only the extracted
> portion (in your case, one character in position 1), dropping the rest.
> Also, the "M" command only makes sense if ever followed by a "Q"; it is
> not intended and does not work for any other purpose. Finally,
> character positions are numbered from 0, not 1.
>
In my weird brain :
xNM = extract substring from position N for up to M characters
wolf -> wwoollff
x01d = extract letter '"w"olf' then w duplicated (duplicated with "d")
= ww
x11d = extract letter 'w"o"lf' then o duplicated (duplicated with "d")
= oo
x21d = extract letter 'wo"l"f' then l duplicated (duplicated with "d")
= ll
x31d = extract letter 'wol"f"' then f duplicated (duplicated with "d")
= ff
finally ww+oo+ll+ff = "wwoollff", but it wasn't the right thing to do.
Could you show us how works your example, with clear explaination like
I do ?
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