Function Patch

src/ColdAPI_Steam/SteamStubBypass/SteamStub.cpp:481–522

		return true;
	}
	void Patch()
	{
		// Get main module base address, assuming is our target.
		HMODULE hExe = GetModuleHandleA(NULL);

		// Get module header informations.
		auto DosHeader = (IMAGE_DOS_HEADER*)hExe;
		auto ntheader = (IMAGE_NT_HEADERS*)((ULONG_PTR)hExe + DosHeader->e_lfanew);
		auto psection = IMAGE_FIRST_SECTION(ntheader);

		// Check if .bind section is present as usually used by Steam stub.
		int stubdetected = 0;
		ULONG_PTR strt1, end1;
		for (int i = 0; i < ntheader->FileHeader.NumberOfSections; i++)
		{
			if (std::strcmp((char*)psection->Name, ".bind") == 0)
			{
				strt1 = (ULONG_PTR)hExe + psection->VirtualAddress;
				end1 = (ULONG_PTR)strt1 + psection->Misc.VirtualSize;
				stubdetected = 1;
				break;
			}
			psection++;
		}
		// Check if the main module entrypoint is into the .bind section range.
		ULONG_PTR entrypoint = (ULONG_PTR)hExe + ntheader->OptionalHeader.AddressOfEntryPoint;
		for (ULONG_PTR i = strt1; i < end1; i++) {
			if (entrypoint == i) {
				stubdetected = 2;
				break;
			}
		}
		if (stubdetected == 2) 
		{
#if (!_DEBUG)
			PatchSteamStub(strt1, end1, (ULONG_PTR)hExe + ntheader->OptionalHeader.AddressOfEntryPoint);
#else
			MessageBoxA(NULL, "Please compile this DLL in release mode to use SteamStub bypass feature. It might be unstable with debug mode!", "Error", MB_ICONWARNING);
			ExitProcess(NULL);
#endif
		}
	}
}