I have collected this intro through experience and tutoring with friends, I find this 
fairly simple. It's a great song and it sound awesome once you start to play it!

e:––––––––––––––––––––––––––––––––––––––|
B:––––––––––––––––––––7––9––––––––7––9––|
G:–––––––––––––7––9–––––––––7––9––––––––|
D:–––9––9––9––––––––––––––––––––––––––––|  x4 (play with heavy distortion for a greater sound)
A:–––7––7––7––––––––––––––––––––––––––––|
E:––––––––––––––––––––––––––––––––––––––|

The song goes on to continue with the guitar and bass playing the same riff.

This was my first tab and I hope this helped.