Just a sketch ,to let you know the notes. Find out the timing.
Its quite easy song, it wouldnt be hard.
First, put some distortion to your bass ;) aaandd....

it starts with...

G||---------------------------------------------|
D||---------------------------------------------|
A||----------------------------------------5-555|
E||7-----7-----7-----7--5--7-----7-----7--------|


Verse 

G||---------------------------------------------|
D||---------------------------------------------|
A||-------------------------------------5555555 |
E||7--7--5-7-5-7--7--5-7-5-7--7--5-7-5----------|


Chorus

G||---------------------------------------------|
D||---------------------------------------------|
A||---------------------------------------------|
E||33333333322222222-(and now the verse riff)---|   x2

and then 

G||----------------------------------------------------|
D||----------------------------------------------------|
A||----------------5555555555444444444-----------------|
E||3333333322222222-------------------33333333355555555|


And thats all, 
after second chorus there is a small variation of the verse riff 
,but you should work it out pretty quick ;) same notes.