Patching: Crack 2021ing

# crack_patch_demo.py # Simulates a "crack me" program, then patches it automatically import sys import re def target_program(password): # Hardcoded check (the "vulnerability") if password == "supersecret123": print("[ACCESS GRANTED]") return True else: print("[ACCESS DENIED]") return False ---------- CRACKING PART ---------- def crack_password_bruteforce(): # Simulated cracking: dictionary attack dictionary = ["admin", "123456", "supersecret123", "letmein"] for pwd in dictionary: print(f"[CRACK] Trying: {pwd}") # Normally you'd call the target function, but here we simulate result if pwd == "supersecret123": print(f"[CRACK] Found valid password: {pwd}") return pwd return None ---------- PATCHING PART (in-memory monkey patch) ---------- def patch_target_function(): # This replaces the target's hardcoded check with a bypass original_check = target_program

if found_pwd: print(f"\n=== Using cracked password ===") target_program(found_pwd) cracking patching

def patched_check(password): print("[PATCHED] Always granting access") return True # Bypass # crack_patch_demo

# Apply patch globals()['target_program'] = patched_check print("[PATCH] Target function patched successfully") if name == " main ": print("=== Cracking Phase ===") found_pwd = crack_password_bruteforce() cracking patching

# crack_patch_demo.py # Simulates a "crack me" program, then patches it automatically import sys import re def target_program(password): # Hardcoded check (the "vulnerability") if password == "supersecret123": print("[ACCESS GRANTED]") return True else: print("[ACCESS DENIED]") return False ---------- CRACKING PART ---------- def crack_password_bruteforce(): # Simulated cracking: dictionary attack dictionary = ["admin", "123456", "supersecret123", "letmein"] for pwd in dictionary: print(f"[CRACK] Trying: {pwd}") # Normally you'd call the target function, but here we simulate result if pwd == "supersecret123": print(f"[CRACK] Found valid password: {pwd}") return pwd return None ---------- PATCHING PART (in-memory monkey patch) ---------- def patch_target_function(): # This replaces the target's hardcoded check with a bypass original_check = target_program

if found_pwd: print(f"\n=== Using cracked password ===") target_program(found_pwd)

def patched_check(password): print("[PATCHED] Always granting access") return True # Bypass

# Apply patch globals()['target_program'] = patched_check print("[PATCH] Target function patched successfully") if name == " main ": print("=== Cracking Phase ===") found_pwd = crack_password_bruteforce()