Pentest and exploit VNC servers. More information: https://www.netexec.wiki/.
nxc vnc 192.168.178.2 -u path/to/usernames.txt -p path/to/passwords.txt
nxc vnc 192.168.178.2 -u path/to/usernames.txt -p path/to/passwords.txt --vnc-sleep 10
nxc vnc 192.168.178.2 -u username -p password --screenshot --screentime 10