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Message-ID: <20060408232204.GA22883@openwall.com>
Date: Sun, 9 Apr 2006 03:22:04 +0400
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: Using John for cracking single hashes
On Sun, Apr 09, 2006 at 01:37:23AM +0300, Ali Polatel wrote:
> I wonder if I can use john to crack single hashes that I have.
Yes, you can.
> For example I have the MD5 hash 5d41402abc4b2a76b9719d911017c592 which is 'hello' and I want to crack it with john.
You should place it in a file like this:
fakeusername:5d41402abc4b2a76b9719d911017c592
Then you need to use a build of John with either the contributed raw MD5
support patch or the jumbo patch. (The official John does not support
raw MD5 hashes.) You run it like this:
john --format=raw-md5 pw
where "pw" is your filename. This gives:
$ ./john --format=raw-md5 pw
Loaded 1 password hash (Raw MD5 [raw-md5])
hello (fakeusername)
guesses: 1 time: 0:00:00:00 100% (2) c/s: 19850 trying: hello
> I have tried but couldn't make it work. I have put it in a file and ran john file first , it couldn't load any hash. Then I have put it in the format user:hash to the file and ran john file again .This time john said :
> Loaded 2 password hashes with no different salts (NT LM DES [32/32 BS])
>
> which is weird too.
You were really close to getting it to work. The only remaining
problems were the fact that John lacks raw MD5 support (except with
contributed patches) and that hex-encoded raw MD5 hashes look exactly
the same as PWDUMP'ed LM hashes, so John can't distinguish the two.
> Adding the --single option didn't change anything.
Indeed - it is completely irrelevant to your problem. You might want to
read the documentation.
--
Alexander Peslyak <solar at openwall.com>
GPG key ID: B35D3598 fp: 6429 0D7E F130 C13E C929 6447 73C3 A290 B35D 3598
http://www.openwall.com - bringing security into open computing environments
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