Decrypting my ISP's ZTE F670L router config in 5 minutes
19 hours ago
- #Router Security
- #ISP Unlock
- #Reverse Engineering
- User discovers ISP router (ZTE F670L) restricts features like port forwarding and custom DNS, but finds a hidden super admin account and full access by decrypting the config.bin file.
- Decryption key combines the first 8 characters of the router's serial number and the byte-reversed MAC address from the sticker, with the weak encryption and a password found in HaveIBeenPwned database.
- Using the zte-config-utility tool on GitHub, users can extract sensitive data including GPON credentials, TR-069 ACS settings, VoIP SIP credentials, and the super admin account.
- The hidden information suggests ISPs intentionally lock down routers not for security, but to prevent customer from asking inconvenient questions about configuration and control.