Hi guys,
I'm trying to use john the ripper to crack my own password on my fc10. First I created the unshadowed file combining passwd and shadow. When I use john to crack it, it says "No password hashes loaded". One thing I 've noted is the hash for the password is very long. On my other systems, the hashes are shorter and I can crack those successfully using a fake worldlist( that contains my password) I created.
Can someone explain, whats going on? And how to do do it.

This is the the password hash from the system in question.
Can somebody tell me what format this is, and how to use john with this or someother way?

The fake word list was cheating. You should test the strength of your password without giving it the answer. Giving it the answer, it finished early so you don't know whether a cracker would be able to crack it using the same tool.

I don't see any colons, and the dots are throughing me. The "$6$" will indicate the password hash used. The characters between the second and third "$" are the salt.

The "$6$" is for the sha-512 hash. It looks like the results are uuencoded from a binary result.
By the way, if that is the hash for your password, then change your password. It should be secret.

John doesn't do SHA at the moment:

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Out of the box, John supports (and autodetects) the following Unix crypt(3) hash types: traditional and double-length DES-based, BSDI extended DES-based, FreeBSD MD5-based (now also used on Linux and in Cisco IOS), and OpenBSD Blowfish-based (now also used on some Linux distributions). Also supported out of the box are Kerberos/AFS and Windows LM (DES-based) hashes.
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I wouldn't be surprised if there are patches floating around to support SHA, though.

Dave

Thanks a lot Dave, I found a patched version of john that is supposed to support SHA1. I don't know if that does the trick. I'll test it later.

Thank a lot to jschiwal too for the information.

I'll keep u guys updated.

SHA-1 & SHA-512 are two different hashes.