Decrypt Zte Config.bin May 2026

Decrypting ZTE config.bin: A Deep Dive into Router Forensics, Firmware Analysis, and Password Recovery

Steps:

1. Install dependencies:

   pip install pycryptodome
   

2. Clone the tool:

   git clone https://github.com/mkst/zte-config-tools.git
   cd zte-config-tools
   

3. Run the decryption:

   python zte_config_decrypt.py config.bin -o config.xml
   

4. If that fails, try brute-force mode (tries common keys): Decrypt Zte Config.bin

   python zte_config_decrypt.py config.bin --brute
   

5. Known Tools & Scripts

• ZTE_Config_Decrypt.py (GitHub) – supports XOR + basic AES.
• zte_config_tool (by @lolwheel) – works for F609/F660.
• RouterPassView – may decrypt certain ZTE configs.
• Custom binwalk – sometimes config.bin is just gzip + XOR.

Method 3: Extracting via Firmware Analysis (Advanced)

For encrypted config.bin files that resist all user-land tools, the encryption key may be embedded in the router’s firmware. Decrypting ZTE config

1. Download the firmware from ZTE’s or your ISP’s support site (e.g., update.bin).
2. Extract the filesystem using binwalk:

   binwalk -e firmware.bin
   

3. Grep for strings in the squashfs or JFFS2 root:

   grep -r "config.bin" extracted_fs/
   grep -r "rc4" extracted_fs/ | grep -i key
   

4. Locate the decryption routine in a binary like httpd or cspd (ZTE’s Common Service Platform daemon). Use Ghidra or IDA Pro to reverse the RC4 setup function.

6. Important Warnings

• Decrypting your own device’s backup is legal in most countries (for recovery).
• Decrypting someone else’s config without permission may violate laws (CFAA, GDPR, etc.).
• Re‑encrypting and flashing modified config can brick your router.

Case Study: ZTE ZXHN H298A v1.0

For this model, the decryption process revealed: Install dependencies: pip install pycryptodome

• Header: 32 bytes (discarded).
• RC4 encryption with key = MD5(serial number + "Zte").
• After decryption, an XML file with base64-encoded passwords.