This is tabbed for standard tuning
E|--------------------------------------------------------|

Main Riff 

Part A

E|1|----------------------------|
B|2|----------------------------|
G|3|----------------------------|
D|4|--------4-4--4-4p2----------| x 3
A|5|-------------------4-0--0h2-|
E|6|--0h2-2---------------------|

Part B
E|1|----------------------------|
B|2|----------------------------|
G|3|-----------------3----------|
D|4|--------4-4--4-4---4-2h4----|
A|5|----------------------------|
E|6|--0h2-2---------------------|


This is the start where there is no singing, only bass guitar and drums.
I recommend you listen closely to the guitar so you can get the rythm, its
difficult to express on text.
The main riff also repeats when they sing " Chinga tu madre ", the chorus of the song.
And it is always Part A x 3, Part B, Part A x3 again then Part C (included below)


Verse.

E|1|-----------------------------------------------|
B|2|---------------7w------------------------------|
G|3|-----------------------------------------------|
D|4|------4w---------------------------------------|
A|5|-----------------------------------------------|
E|6|--2-------2------------------------------------|

The verse part is always the same, but note that it finishes in

Part C
E|1|-----------|
B|2|-----------|
G|3|-----------|
D|4|------4w---|
A|5|-----------|
E|6|--2-------2|


Then on the bridge, its only drum and voices, and the guitar does some little fills,


E|1|--2h3p2h3--(2h3p2h3p2)w-------|
B|2|------------------------------|
G|3|------------------------------|
D|4|------------------------------|
A|5|------------------------------|
E|6|------------------------------|

Then goes back to the chorus

And then the solo with wah-wah while the chorus rages on.
Its a cromatic run through the neck.
This is an aprox, because the sound of the guitar is not very high, its more of a fill 
rather than a solo

E|1|-----------------------------------------------|
B|2|-------2--5--7-8-9-10-11-12-13-14-16---17-17-14|
G|3|---2-4-----------------------------------------|
D|4|-----------------------------------------------|
A|5|-----------------------------------------------|
E|6|-----------------------------------------------|