Hey guys I've seen many very incorrect bass tabs for this song but I think I've got an 
one. Here ya go

Intro (guitar goes first, come in about 3-4 sec with this relatively fast)

G---7---------------------|
D-----9-7-----------------|
A---------9-5-------------|
E-------------------------|

Then jump straight into the main riff which is also the verse

G-------------------------|
D-------------------------|
A--3/5-5-5-35----(3)------|
E-------------------------|
you can add the note in ( ) if you feel like it


Chorus                                back to verse/riff

G----------------------------------=--------------|
D----------------------------------=--------------|
A------------------3-3-3-3-3-3-3-3-=-3/5-5-5-35---|
E--3-3-3-3-3-3-3-3-----------------=--------------|

Walk-up you can add during/in place of the last chorus'

G---------------------------|
D-----------------0--2--5---|
A-----0--1--5--3------------|
E--3------------------------|

Second part of guitar solo

G----------------------------------------------------------------|
D----------------------------------------------------------------|
A-33333333-11111111-33333333-11111111-33333333-11111111-11111111-|
E----------------------------------------------------------------|



Order:
Intro- 1x 0-5 sec
Riff- 4x  5-14 sec
Verse 1- 6x 14-29 sec
Chorus 1- 1x 29-35 sec
Riff- 4x 35-45 sec
Verse 2- 6x 45-59 sec
Chorus 2- 1x 59-1:05 sec
Riff- 4x- 1:05-1:14
Intro (before solo)- 1x 1:14-1:15
1st Guitar Solo (play main riff)- 4x 1:15-1:25
2nd Guitar Solo- 1x 1:25-1:43
Riff- 4x 1:43-1:53
Verse 3- 6x 1:53-2:08
Chorus 3- 1x 2:08-2:13
Riff- 2x 2:13-2:19
Chorus 4- 1x 2:19-2:24
Riff- 2x 2:24-2:28
Chorus 5- 1x 2:28-2:34
Riff- 2x 2:34-2:38
Chorus 6- 1x 2:38-2:44
Riff- 2x 2:44-2:48
 fades out...

Hope this helps good luck!!!