Facebook CTF Is Now Open Source
Really cool. Tried to run it, unfortunately the code is broken at the moment- saw this error:    May 11 19:42:11 fbctf hhvm[12971]: [Wed May 11 19:42:11 2016] [hphp] [12971:7f304b7ff700:6:000001] [] \nFatal error: Class undefined: AsyncMysqlConnectionPool in /var/www/fbctf/src/Db.php on line 19

Very much looking forward to trying it out.