It happens to be the first instruction of the first snippet in the wonderful xchg rax,rax.
https://www.xorpd.net/pages/xchg_rax/snip_00.html
Not sure what I am looking at here is this just a bunch of different ways to zero registers?
That music when you click "int" is awesome. Reminds me of the good ol' days of keygens.
Not sure what I am looking at here is this just a bunch of different ways to zero registers?