Create update.c

[SleepTheGod]

How This Works
Overflows the buffer with 0x41 ('A') characters.
Overwrites the return address with 0x41414141 (arbitrary controlled value).
Writes the exploit payload to a file (/tmp/exploit_payload).
Executes the vulnerable program with the payload, causing a segmentation fault or arbitrary code execution.
Step 1: Compile the Exploit
gcc exploit.c -o exploit -fno-stack-protector -z execstack -g
Step 2: Run the Exploit
./exploit
Step 3: Debug the Vulnerable Program
Run the vulnerable program in GDB to confirm memory corruption
gdb -q ./vulnerable_program
(gdb) run $(cat /tmp/exploit_payload)
(gdb) info registers
(gdb) x/20x $esp

Look for the following code
EIP Overwrite (EIP = 0x41414141)
Segmentation Fault indicating successful corruption.

Next Steps
If the program crashes with 0x41414141 in EIP, it's exploitable.
Replace 0x41414141 with a jump to shellcode (jmp esp).
Inject NOP sled + shellcode to spawn a shell.