Opcodes in C++

[revolutzia]

How can you manually input opcodes in C++?
Like 8B is MOV ans so forth. (Compiler having trouble with Asm)

[Eri523]

Watch out for the magic words "inline assembler". In case you're using MS Visual C++: http://msdn.microsoft.com/en-us/library/4ks26t93.aspx

[Chris_F]

I suppose you could do something like this:

int main()
{
	const char* code = "\x90\x90\x90\x90";
	void (*foo)(void) = (void (*)(void))code;
	foo();
}

But I wouldn't advise it. There's also no need to go to such lengths since most compilers support inline assembly which is more useful.

[Eri523]

I suppose you could do something like this:

[...]

In principle, yes (ignoring the fact that your machine code lacks the RET instruction, causing it to lead to a certain crash ). However exactly this is what DEP is meant to prevent, so it probably won't work on the majority of today's systems.