10-12-2011, 10:17 AM
It is not possible, unless:
1. You find out the hash completely. HC does not support partial hashes. I know only one program which does, and it's PPro.
2. You need to know the exact algorithm.
If those two are met, you just need to pick the reversed algo, for example, for md5($salt.$pass), you will need to choose md5($pass.$salt) and this way you actually attack the hash for the salt.
If the salt is short this is an easy job.
1. You find out the hash completely. HC does not support partial hashes. I know only one program which does, and it's PPro.
2. You need to know the exact algorithm.
If those two are met, you just need to pick the reversed algo, for example, for md5($salt.$pass), you will need to choose md5($pass.$salt) and this way you actually attack the hash for the salt.
If the salt is short this is an easy job.