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In the source code, identify the hardcoded string or the byte array used as the AES key. Note the Initialization Vector (IV) if CBC mode is used.
The most popular and reliable method for decrypting HTTP Custom files is using the Python-based decryption tool developed by the HCTools Group.
to find the host, port, and payload structure. 4. Alternative: Creating Your Own Exclusive Config
If you are a content creator who wants to protect your HTTP Custom configs, apply these countermeasures: how to decrypt http custom file exclusive
If the decryptor fails to decrypt your file, it may be using an encryption key that hasn't been added to the tool's database. Solution: Check for updates to the decryptor tools or manually add the key if you can identify it.
Run the hook using the Frida CLI while importing your exclusive .hc file into the app: frida -U -f com.vpn.httpcustom -l hook.js --no-pause Use code with caution.
When saved normally, you can rename file.hc to file.zip or file.json and view its contents.
Download the exact version of the HTTP Custom APK that matches the file creation (older files require older APKs). This public link is valid for 7 days
Because the app holds the raw, decrypted payload string in the volatile memory to establish the socket connection, you will find the plain text configuration exposed there.
HTTP Custom is a popular Android VPN client used to secure internet traffic, bypass censorship, and access free internet resources using custom configuration files. These files carry the .hc extension. Often, configuration creators lock or set these files to "Exclusive" to protect their payload settings, server SNI (Server Name Indication), proxy details, and intellectual property.
While there are community-made "sniffers" or third-party decryption tools (often shared in Telegram groups or developer forums), these methods are:
: Frida framework or Xposed Framework to intercept variables at runtime. Can’t copy the link right now
Navigate through the decompiled Java classes (often obscured by ProGuard obfuscation, such as a.b.c.class ). Look for a 16, 24, or 32-character string assigned near the encryption methods. This string, alongside the Initialization Vector (IV), is used to decrypt the .hc file byte stream. Step 4: Run a Decryption Script
Because cryptographic keys are difficult to extract from compiled native code, the most effective approach is to let the HTTP Custom application decrypt the file itself in memory, and then intercept the decrypted string. Step 1: Set Up Frida on Your Device
An .hc file is essentially an encrypted VPN configuration profile used primarily by the HTTP Custom Android app, also known as an AIO Tunnel. These files contain important networking rules, including:
# The decrypted data is usually GZIP compressed try: decompressed = gzip.decompress(decrypted) except: decompressed = decrypted # not compressed
Decrypting an exclusive file may violate:
Before attempting decryption, you must understand what an .hc file contains and how the application handles it.