Dropped D tuning (tune E string down at 7th fret). 

Beginning: 

G------------------|
D------------------|
A------------------|
D---10-10-10-10-10-|

Main riff: (repeat) 

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

Chorus: 

             repeat 3x        |          
G-----------------------------|------------------|       
D-----------------------------|------------------|  2nd time through
A-----------------------------|------------------|  rest after this part
D---7--7-7---12---7--7-7---11-|-12--12-----------|  while drums play     
                              |            
                repeat  4x
G------------------------------------------------| 
D------------------------------------------------|
A------------------------------------------------|
D--5--7---0--5---0--0------12--12----------------|       

                               repeat this part   4x
G--------------------------|-------------------------------------| 
D--------------------------|-------------------------------------|  
A--------------------------|-------------------------------------| 
D--5--7---0--5---0-0-12-12-|---5--7--0---5--0--0---12--12--------|
                                                                    
G------------------------------------------------|
D------------------------------------------------|
A------------------------------------------------|
D---5--7---0---5--10-10-10-10-10-----------------|

Go back to main riff. 

Bass plays during guitar solo. 

               repeat
G------------------------------------------------|
D------------------------------------------------|
A------------------------------------------------|
D---12---12----5--7-----0----5----0--0-----------|

G------------------------------------------------|
D------------------------------------------------|
A------------------------------------------------|
D---10--10--10--10--10---------------------------|

Ending: 

G-----------------------------------------|
D-----------------------------------------|
A-----------------------------------------|
D----5---7---0---5--10-10-10-10-10-10-----|

These riffs repeat throughout the song. The bass part basically follows the guitar part, so you can look at this 
(if it's decipherable) and just play power chords along to it.