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Date: Sat, 6 Apr 2013 10:47:53 -0300
From: Noilson Caio <caiogore@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: What am I doing wrong?

Thanks for the explanations.



On Fri, Apr 5, 2013 at 11:49 PM, Solar Designer <solar@...nwall.com> wrote:

> Sandra,
>
> What you were doing wrong was using a non-informative message Subject.
> This almost made me delete the message without reading, thinking that it
> was spam.  A better subject would have been e.g. "cracking MD5 hashes",
> or even just "MD5".
>
> On Fri, Apr 05, 2013 at 11:20:09PM -0300, Noilson Caio wrote:
> > change your echo something like the merge between passwd and shadown
>
> This makes me wonder: as a list moderator, should I be rejecting
> messages with wrong advice on technical issues, even when they're
> obviously well-intentioned?  I reluctantly approved Noilson's posting
> this time, in part because some active list members' postings bypass
> moderation and they sometimes contain wrong advice too. ;-)
>
> > like this:
> >
> > bash-4.2# echo "onu:c231df9a8f34cee959cbc6bcca4a9286:::::" > teste
> > bash-4.2# echo "tdc:f5ba7db80ba2d7d7b650119d52fcd8d0:::::" >> teste
> > bash-4.2# ./john  teste
> > Loaded 4 password hashes with no different salts (LM DES [128/128 BS
> > SSE2-16])
>
> Sandra specified that those were (presumably) MD5 hashes, so getting
> John to load them as LM is of no help.  The extra colons (":::::") make
> no difference anyway - the hashes may be mis-loaded as LM regardless.
>
> She was getting "0 password hashes cracked, 0 left" in response to
> "john --format=MD5 --show /tmp/hashs" for three reasons at once, every
> one of which was sufficient on its own:
>
> 1. The "--format=MD5" option requests md5crypt, not raw MD5.
>
> 2. "--show" is for showing previously cracked passwords, not for initial
> cracking of hashes.
>
> 3. There's no raw MD5 support in "official" versions of JtR (such as the
> 1.7.9 release); it is a jumbo feature.
>
> And yes, our historical use of "MD5" vs. "raw-MD5" for format names
> keeps causing confusion for new users...
>
> Alexander
>



-- 
Noilson Caio Teixeira de Araújo
http://ncaio.wordpress
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