Comment on Windows Defender Anti-vitus Bypassed Using Direct Syscalls & XOR Encryption
Quazatron@lemmy.world 1 week agoThat’s how it was done in the old days to save a few cycles in Z80 assembly. XOR A instead of LD A, 0.
Comment on Windows Defender Anti-vitus Bypassed Using Direct Syscalls & XOR Encryption
Quazatron@lemmy.world 1 week agoThat’s how it was done in the old days to save a few cycles in Z80 assembly. XOR A instead of LD A, 0.
InverseParallax@lemmy.world 1 week ago
I use that daily in my accelerator work.
Once you learn the trick, you just use it naturally.