How can I run an executable from RAM using C++?

Question

How can I run an executable from RAM using C++?

The executable is in RAM, and I know the address, how do I call into the program from mine?

Answer 1

Do you mean that you have loaded the contents of the EXE file into RAM and now want to run that executable?

Since you're talking about an EXE, I assume you're running under Windows. To my knowledge, Windows can't do this -- your only option is to save the executable back to a file and run that (using CreateProcess, for example).

Edit Here is how you would run the process.

In C++:

STARTUPINFO si;
PROCESS_INFORMATION pi;

ZeroMemory(&si, sizeof(si));
si.cb = sizeof(si);
ZeroMemory(&pi, sizeof(pi));

if(!CreateProcess("myfilename.exe", NULL, NULL, NULL, FALSE, 0, NULL, 
    NULL, &si, &pi ))
{
    // An error occurred
}

In C#:

using System;
using System.Diagnostics;

Process.Start("myfilename.exe");