Any way to tackle md5(md5($password).$salt)?

[ukyang]

ukyang, the format is like you wrote Hash:Salt. If your hash is really Vbulletin then your salt is probably in hex format. You have to use -m 2611 (for Vbulletin with 3 characters salt) and the switch --hex-salt
and it should work.

Thank for the reply. Unfortunately, this kind of hashing function is used in the forum system "discuz", which is extremely popular in Mainland China, HongKong and Taiwan. So I can only hope that this function will be added into next release.