Some systems can be particularly difficult to access through raw machine code. For example with ASLR the addresses of functions and data can move around at runt

Some systems can be particularly difficult to access through raw machine code. For example with ASLR the addresses of functions and data can move around at runtime, so without using the linker it can be hard to access. Or there are binary obfuscation techniques that are even more thorough with their randomization. But in the end it all compiles to assembly so everything is potentially accessible there.