The developers of HTTP Custom frequently update their application, changing the encryption methods, adding anti-debugging code, and implementing root-detection to break these unauthorized decryption tools. Risks of Attempting to Decrypt .hc Files
If a file was created with a newer or older version of the app, the standard decryption keys might not work.
There are two primary types of encryption used in custom HTTP files:
The most widely recognized tool for this purpose is the hcdecryptor project hosted on GitHub by the HCTools group. Written entirely in Python, it is a command-line utility that automatically detects the correct key from its built-in list to decrypt the file.
In older versions of HTTP Custom, configurations were obfuscated using standard AES encryption with a hardcoded string key or a key derived from the device's ID. Modern versions utilize native C++ libraries ( .so files) via JNI (Java Native Interface) to handle encryption, making static analysis highly complex.
For security and commercial reasons, configuration creators often lock these files to protect their private server info. However, network administrators, developers, and cybersecurity researchers often need to decrypt these files for auditing, troubleshooting, or learning purposes.
This indicates the decryption key or Initialization Vector (IV) is incorrect by even a single bit. Ensure your extraction script uses the correct block alignment.