how to decrypt http custom file

How To Decrypt Http Custom File -

HTTP Custom (.hc)

The story of decrypting an file is a journey into the world of VPN configuration, community-driven reverse engineering, and the constant cat-and-mouse game between app developers and power users. 1. The Mystery of the .hc File

  1. Extract encrypted Base64 blob from .hc (after stripping header)
  2. Identify key/IV – often hardcoded in app’s native library (libhttpcustom.so)
  3. Decrypt using OpenSSL: 
    openssl enc -d -aes-128-cbc -in encrypted.bin -out decrypted.json -K <key> -iv <iv>

Custom Headers:

Modified HTTP request information, often used to bypass firewalls or spoof user agents. how to decrypt http custom file

time-intensive

If you’ve completely lost the password, you can try a brute-force tool. This is and only works for weak passwords. HTTP Custom (

  • If it ends with = or contains A-Za-z0-9+/, it's likely Base64.
  • If it's %2F%3A style, it's URL encoded.
  • If it's 3c68746d6c3e, it's hex.
  • Security Auditing: To ensure a downloaded config doesn’t contain malicious redirects.
  • Porting Configs: To transfer settings to another app like HTTP Injector, NapsternetV, or Shadowsocks.
  • Learning Payload Structures: To understand how advanced DPI bypass techniques work.
  • Recovery: If you lost the original source credentials but have the .hc file.

She reported her findings to Kael. “The file is decrypted by extracting the hardcoded key from the app’s binary. It’s not secure. At all.” Extract encrypted Base64 blob from

If you are locked out of your own configuration or need to inspect a payload, two primary methods are historically used. Method 1: Using Python-Based Decryptors

hcdecryptor

While these files are designed to be "locked" to prevent unauthorized viewing of sensitive account details, specialized tools like can sometimes reverse the process. What is an HTTP Custom (.hc) File?