This is a blues scale that sounds a bit like the 'badass riff' that someone sent in.

e-----------------------3-6-----6-3----------------
B------------------3-6-------------6-3-------------
G--------------3-5--------------------5-3----------
D----------3-5---------------------------5-3-------
A------3-6----------------------------------6-3----
E--3-6-----------------------------------------6-3-

Sounds better fast, take a little break half way.