I listened to the song several times and came up with this:

Standard tuning

First riff:
G--not used
D--not used
A--not used
E--5-5-------0-0-------1-1-------5-5--8-7-5

Second riff:
G--not used
D--not used
A------------3-3--------2-2-------------------
E--5-5-----------------------------0-0--3-2-3

Continue these alternately throughout the song, slap a little
funk on it if you want.