How To: Crack A VNC Password (BackTrack, Kali, Hydra)
In this tutorial, I’m going to teach you how to crack a VNC server’s password using the Hydra password cracking utility, which comes preinstalled on BackTrack 5 and Kali Linux. To perform this attack, you’ll need a wordlist or dictionary file. If you don’t have one, you can download one or create one. To create one, refer to one of the following tutorials:
Create a wordlist with Crunch
Create a wordlist with CUPP
Note: It is illegal to perform this attack on any VNC server that you do not own. The information presented in this tutorial is for educational purposes only.