The following program takes a password as input but always refuses to generate lottery numbers:

lottery.cpp

Luckily, the program is vulnerable to a buffer overrun in the goodPassword$()$ procedure. The goal is to take advantage of the vulnerability so that it can generate lucky numbers for us$.$

a$)$ Draw a diagram showing how the stack is arranged when this program runs.

b$)$ Figure out a password that can make the program output a lucky number. Hint: no need to overwrite the return address; there is an easier target to overwrite in this program.$$Explain how your password works.$$

c$)$ Rewrite the program so that it no longer has a buffer vulnerability. $```$

#include

using namespace std;

char goodPassword$()\{$

int good $=\text{'}$N$\text{'}$;

char Password$[10]$; $//$ Memory storage for the password

cin$>>$Password; $//$ Get input from keyboard

return $($char$)$good;

$\}$

int main$()\{$

cout$$"Enter your password:"$$