Use SSH private key
.priv
chmod 600 key.priv
ssh -i key.priv user@x.x.x.x
Extract Password from id_rsa key
python /usr/share/john/ssh2john.py id_rsa > test
john –wordlist=/usr/share/SecLists/Passwords/Leaked-Databases/rockyou-50.txt test
.priv
chmod 600 key.priv
ssh -i key.priv user@x.x.x.x
python /usr/share/john/ssh2john.py id_rsa > test
john –wordlist=/usr/share/SecLists/Passwords/Leaked-Databases/rockyou-50.txt test