Cheat dev here. Check out this prior art of someone utilizing PS4 jailbreak exploits to modify GTA V's scripting VM at runtime:

https://github.com/2much4u/PS4-GTA-V-Native-Caller

In the cases where end-to-end vendor control over the hardware from the player's fingers to the HDMI out exists, yes that seems possible.

But on a PC? Where the user can install whatever software they like? Much harder.

It feels like stopping aimbots will ultimately fail as eventually we'll see bots that use machine-vision to spot heads and pick them off. You wouldn't even need to run it on the cheating machine, this could be a separate device doing passthrough on the mouse, keyboard, and monitor.

Someone else mentioned doing this: https://news.ycombinator.com/item?id=28634631

Even if they turn on HDCP, you could just get a low-lag monitor and point a camera at it.

You can just buy an HDCP stripper. https://www.amazon.com/Easyday-Stripper-Splitter-Signal-Ampl...