Cisco IOS hashes

[scuffer]

I am new to the forum, so I hope I have used all the available resources first..

MD5crack, Cain and JtR can all be used to crack a cisco IOS MD5 hash, but I can't find anything in Hashcat that will work. Before I bang my head into the wall anymore, I figured it would be worth asking..

Can Hashcat be used to crack a Cisco IOS MD5?

From what I have gathered, a typical unix style MD5 would be in the format

Code:

$1$<8 byte salt>$<hash>

It seems that the Cisco IOS MD5 uses a similar but smaller format

Code:

$1$<4 byte salt>$<hash>

This smaller format will always give a line length exception.

I started to just bang away at every MD5 available and came up empty.
Am I missing something or is it just not available?

Thanks!!