A library to load and manipulate PE files.
The simplest usecase: use libPeConv to manually load and run an EXE of you choice.
#include <Windows.h>
#include <iostream>
#include <peconv.h> // include libPeConv header
int main(int argc, char *argv[])
{
if (argc < 2) {
std::cout << "Args: <path to the exe>" << std::endl;
return 0;
}
LPCSTR pe_path = argv[1];
// manually load the PE file using libPeConv:
size_t v_size = 0;
#ifdef LOAD_FROM_PATH
//if the PE is dropped on the disk, you can load it from the file:
BYTE* my_pe = peconv::load_pe_executable(pe_path, v_size);
#else
size_t bufsize = 0;
BYTE *buffer = peconv::load_file(pe_path, bufsize);
// if the file is NOT dropped on the disk, you can load it directly from a memory buffer:
BYTE* my_pe = peconv::load_pe_executable(buffer, bufsize, v_size);
#endif
if (!my_pe) {
return -1;
}
//calculate the Entry Point of the manually loaded module
DWORD ep_rva = peconv::get_entry_point_rva(my_pe);
if (!ep_rva) {
return -2;
}
ULONG_PTR ep_va = ep_rva + (ULONG_PTR) my_pe;
//assuming that the payload is an EXE file (not DLL) this will be the simplest prototype of the main:
int (*new_main)() = (int(*)())ep_va;
//call the Entry Point of the manually loaded PE:
return new_main();
}