memcpy32.cpp

memcpy32.cpp

// memcpy 32bit by [email protected]
#include <stdint.h>
#include <stdio.h>
#include <windows.h>

int main(void) {
    int dummy(0x41414242);
    char buf[8] = {0};
    ((void(cdecl *)(DWORD, DWORD, DWORD))"\x8B\x7C\x24\x04\x8B\x74\x24\x08\x8B\x4C\x24\x0C\xF3\xA4\xC3")((size_t)buf, (size_t)&dummy, sizeof(dummy));
    puts(buf);
}

What is code doing can u explain it please?

look at the code of line 9, there's a byte array. that's a x86 machine code payload, and use online x86 to disassemble you will get the following asm script:

this x86 script just used for copy data from source to destination (just like memcpy)