I think this tab is'nt bad! You can also look for the Guitar and Drumtabs :-)

RIFF 1
BASS (ab 3x Riff 1)
E|-------------3-3-3--1-|
A|-0-0-0--3-------------|
D|----------------------|
G|----------------------|

RIFF 2
BASS
E|------------------1-1-1-1--3-3-3-3-|
A|-0-0-0-0-0-0-0-0-------------------|
D|-----------------------------------|
G|-----------------------------------|

RIFF 3
BASS
E|-----------------3-3-3-3-1-1-1-1-|
A|-0-0-0-0-3-3-3-3-----------------|
D|---------------------------------|
G|---------------------------------|

RIFF 4
BASS
E|-----------------1-1-1-1-1-3-1-1-|
A|-0-0-0-0-0-0-0-0-----------------|
D|---------------------------------|
G|---------------------------------|

ENDING
BASS (ab 3x Riff 1)
E|-------------3--5-|
A|-0-0-0--3---------|
D|------------------|
G|------------------|

Riff 1 (4x)
Riff 2 (4x)
Riff 3 (2x)
Riff 2 (4x)
Riff 3 (2X)
Riff 4 (1x)
Riff 3 (1x)
ENDING