patch1337-to-cpp

Converts a .1337 file to a .cpp runtime patcher.

Use case is for DLL Injection and automatic patching of the binary on runtime.

Uses code from https://stackoverflow.com/a/48737037 to patch on runtime, thanks!

Sample output:

#include<vector>
#include<windows.h>int BaseAddress = (int)GetModuleHandle(nullptr);
structPatchAddress { int Address; unsignedchar OldByte; unsignedchar NewByte; };
structPatch { constchar* ModuleName; std::vector<PatchAddress> Patches;};
voidPatchUChar(unsignedchar* dst, unsignedchar* src, int size) {
DWORD oldprotect;
VirtualProtect(dst, size, PAGE_EXECUTE_READWRITE, &oldprotect);
memcpy(dst, src, size);
VirtualProtect(dst, size, oldprotect, &oldprotect); };
Patch executable_exe = { "executable.exe", {
PatchAddress{ 126805, 87, 88 },
PatchAddress{ 126885, 7, 8 },
PatchAddress{ 126948, 200, 201 },
PatchAddress{ 126965, 183, 184 },
PatchAddress{ 126982, 166, 167 },
PatchAddress{ 126999, 149, 150 },
PatchAddress{ 127019, 129, 130 },
PatchAddress{ 127036, 112, 113 },
PatchAddress{ 127529, 131, 132 },
PatchAddress{ 127575, 85, 86 },
PatchAddress{ 127621, 39, 40 },
} };
voidpatch_executable_exe() {
for (PatchAddress addr : executable_exe.Patches) {
PatchUChar((unsignedchar*)(BaseAddress + addr.Address), &addr.NewByte, 1); }
};
voidunpatch_executable_exe() {
for (PatchAddress addr : executable_exe.Patches) {
PatchUChar((unsignedchar*)(BaseAddress + addr.Address), &addr.OldByte, 1); }
};