This isn't really the bass tabs for the song(since there isn't any bass part), but 
it works for the song. 

(h= hammer on, p= pull off, ^= bend up)

        Verse 1                  Chorus
G I----------------I     G I------------------------I
D I----------------I     D I------------------------I
A I-0---5-3-3h4p3-0I     A I-------3--0-55555-3-5-3^I
E I----------------Ix8   E I--3-0-------------------Ix4
                        (The last note of the verse segways into the chorus)

Verse 2: same as Verse 1

Chorus 2: same as Chorus 1

Solo: Same as Verse 1 (But you can make your own bass solo for it)

    Guitar Riff (Bass enters on second repeat)
G I-------------------------I
D I-------------------------I
A I--------3--0-55555-3-5-3^I
E I-5--3-0------------------I

Verse 3: same as verse 1
Chorus 3: same as chorus 1

Knowing the guitar part is very helpful to making a bass part, if i didn't know 
how to play guitar, you wouldn't 
be reading this right now.