I don't know how mac "apps" work, but if we assume it can gain full control over the os, there's really only one thing they can do: "anchor" the checks in hardware.
The way it (supposedly) works is that you have a hardware chip that checks the bios, which checks the boot loader, which checks the os, which checks the apps etc.. The goal is that you'll have to modify the actual hardware chip in order to "crack" the os. Sounds great, but has a lot of challenges in practice.
The way it (supposedly) works is that you have a hardware chip that checks the bios, which checks the boot loader, which checks the os, which checks the apps etc.. The goal is that you'll have to modify the actual hardware chip in order to "crack" the os. Sounds great, but has a lot of challenges in practice.