#include <stdio.h>

// sudo sysctl -w kernel.randomize_va_space=0
// gcc -o vulnerability vulnerability.c -fno-stack-protector -mpreferred-stack-boundary=2 -m32

int main(int argc, char *argv[])
{
  char buf[32];

  if ( argc < 2 )
  {
    return -1;
  }
  else{
    strcpy(buf,argv[1]);
    printf("You entered : %s\n",buf);
  }
}