static.c

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


// We Use a Sruct as it means we can be sure that the memory layout stays the same

struct staticMemory {
  char buffer[20];
  int canary;
};


int win(){
  system("/bin/sh");
}

int main(int argc, char *argv){

  //Initilise our memory
  struct staticMemory myMemory;

  //And the Canary
  myMemory.canary = 0xDEADBEEF;
  
  printf("Enter your String\n");
  gets(myMemory.buffer);


  //And Do our check
  if (myMemory.canary != 0xDEADBEEF){
    printf("Stack Smashing Detected!!!\n");
    exit(-1);
  }
  
  return 1;

}