the bass at the very start is a patch from massive which was resampled like, 4 times and each resample has more EQing, filtering and ohmiciding than the last. when it drops, the second sound that plays is a smooth square wave with some simple effecting in massive like classic tube on it and with envelopes and performer modulating the WT position, intensity, pitch and scream filter cutoff. it was then resampled with EQing and ohmicide and volume changes added.
that big subbass sound that goes down is just pure sub/sine wave then the distortion on top of it is actually the same patch of the first reesey sound with just the highs in it. that's about it i think.