[darkninja1980]

Use parrotOS, with anon surf. try
`nping -c 1 --tcp site.onion` you can get a real IP adress.
then read here http://seclists(dot)org/nmap-dev/2015/q2/317 and scan site
you can try some onion scanner like onionscann but it's written no GO and i don't like it so i never used it. probably everything else is like any other clear site.
https://github(dot)com/s-rah/onionscan.git
Or if you want do destroy target site use torkill or any other script for DOS/DDOS.
https://github(dot)com/THSamurai/TorKill

oh okay, thank you for the input.