/* here's how the fake wu exploit, "rm -rf ~" trojan worked
   by Sorcerer@DALnet (irc), mail: nijen@mail.ru
*/

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

main() {
   // first, change the code address for puts to that of system
   **(int **)((int)puts+2)=(int)system;
   // second, use puts instead of system, this executes "id"
   puts("id");
}