[devilism]

hey..by using mac os x also you can do hacking... you can get metasploit, hydra, nmap, sqlmap, angry ip scanner, john the ripper, and also most powerful hacking tools for mac...
first step is install mac ports...and by using that you can get most of the terminal tools..and if you are not able to install a specific terminal tool then always make http://www.google.com your best friend...

search those in google.,, hope this helps you...