[thetechgenius]

Like other people said, its impossible to de-hash/de-crypt an already encrypted vbulletin password. If this was easily possible, it would be a very major security issue in the vBulletin Software. When a hacker gain access to a server that running your forum, the first place he goes is MySQL to download a copy of your entire forum database. The hacker then has all Emails and Encrypted Passwords of your forum.

If it was possible to decrypt the passwords easily, most of those email accounts will also be hacked. Not including Facebook Accounts, Twitter, and the list goes on. Because a lot of people use the same password and email for everything in their life.