john-users - Fw: Noob question: how to feed 10 alphanum char min&max incremental to aircrack when "MaxLen = 10 exceeds the compile-time limit of 8"

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Message-ID: <428547.97318.qm@web24603.mail.ird.yahoo.com>
Date: Wed, 1 Sep 2010 21:18:07 +0000 (GMT)
From: Mr Ex <ex_says@...oo.co.uk>
To: john-users@...ts.openwall.com
Subject: Fw: Noob question: how to feed 10 alphanum char min&max incremental to aircrack when "MaxLen = 10 exceeds the compile-time limit of 8"

Thanks for the reply.

It does need to be 10 alnum as the passphrase won't just be digits (and I'd be 
using Mac OSX). So its not possible to just do 10-10 alphanum chars on JtR as 
far as anyone knows? Given that I don't want 9, 8, 7 or less alnum chars nor 11+ 
alnum chars *just 10*, seems quite a reasonable, not too overly time-consuming 
crack to want to feed through from John, I'd be surprised if its not possible.

I take what you're saying in terms of generating a custom .chr file and have 
re-read http://www.openwall.com/john/doc/EXAMPLES.shtml but isn't that method 
merely a way of filtering, i.e. it won't actually make John do a min 10 / max 
10, or am I just not understanding it right?

-EX

----- Forwarded Message ----
From: Rich Rumble <richrumble@...il.com>
To: john-users@...ts.openwall.com
Sent: Wed, 1 September, 2010 15:35:49
Subject: Re: [john-users] Noob question: how to feed 10 alphanum char min&max 
incremental to aircrack when "MaxLen = 10 exceeds the compile-time limit of 8"

http://openwall.info/wiki/john/mailing-list-excerpts
http://www.openwall.com/lists/john-users/2007/07/04/6
Specifically... You have to create your own CHR files and recompile.
I have not had success with compiling anything other than digits over 8,
you can DL my digit only build (up to 16 digits) here:
hxxp://xinn.org/jtr__digits/john-digits-16.7z (windows only)
If you don't have 7zip you can find it easily. This build will only
crack digit only
hahses with lengths from 1-16 digit characters long. The build is
against JtR 1.7.6
jumbo rev 5. I'm not sure how to run it against a pcap, but if it's
supported by JtR
or the jumbo patch it should work. I should try again to build an
AlphaNum JtR but
I haven't had the time. You do have to modify the john.conf parameters
to suite your
needs:
  # Incremental modes
  [Incremental:Digits16]
  File = $JOHN/digits16.chr
  MinLen = 1
  MaxLen = 16
  CharCount = 10

Command line:
john-digits-16.exe pass.pwd -i=digits16 -format=nt
I hope that helps some...
-rich

On Wed, Sep 1, 2010 at 3:28 AM, Mr Ex <ex_says@...oo.co.uk> wrote:
> Hi
>
> I'm a total noob who is trying to run a crack specified to effectively brute
> force 10 characters only and alphanumerical only (against a pcap)... I 
modified
> the config file; the alpha numerical bit, so that it was minimum 10, maximum
> 10, as this just seemed logical from reading the help file, and then

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