Standard tuning
This is played on some sort of synthesizer on the album but I've arranged it for guitar here.
Here is the progression played throughout the verses
-----------------17--17--17------15----------18-------------------------------
-----15--15--18--------------18------17--------------13------15---------------
-15--15------15------------------------------------------12-------------------
-------------------------15------14------17------15------14-------------------
-----------------17-----------------------------------------------------------
------------------------------------------------------------------------------
Then the bass riff begins overtop
------------------------------------------------------------------------------
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------------------------------------------------------------------------------
-1-1----3-3----6-6-----5-5-------5-5----3-3-----------------------------------
The bass riff at the end of the first verse goes like this
------------------------------------------------------------------------------
------------------------------------------------------------------------------
------------------------------------------------------------------------------
-5-5--3-3-------------5-5--3-3------------------------------------------------
--------------------------------5-5-------------------------------------------
--------------1-1--------------------1-1--------------------------------------