1.) Square
2.) Get 2nd osc to be an octave higher (12 notes up) (12 on the number thingy [noob talk])
3.) Phase Mod A with B (in other words: move the number on the square for B2 up until you get a nice sound)
4.) Use the level automation on the SYNTH to make the "wub" sound
5.) Highpass the sound to cut the low end (replace the low end with a seperate sub bass)
6.) Put any effects on the sound (I recommend using a second highpass with resonance to give it a bit of a vowely sound
7.) Seven.