File Exclusive: How To Decrypt Http Custom

# Attempt to decrypt as if it's OpenSSL salted AES-256-CBC openssl enc -d -aes-256-cbc -base64 -in exclusive.hc -out decrypted.gz -pass pass:httpcustomkey gunzip decrypted.gz

import base64 import gzip from Crypto.Cipher import AES from Crypto.Util.Padding import unpad def decrypt_hc_exclusive(input_file, output_file, key, iv): # Read the Base64 encoded exclusive content with open(input_file, 'r') as f: b64_data = f.read().strip() how to decrypt http custom file exclusive

# Write the plaintext JSON config with open(output_file, 'w') as f: f.write(decompressed.decode('utf-8')) # Attempt to decrypt as if it's OpenSSL

# Standard AES CBC decryption cipher = AES.new(key.encode('utf-8'), AES.MODE_CBC, iv.encode('utf-8')) decrypted_padded = cipher.decrypt(ciphertext) decrypted = unpad(decrypted_padded, AES.block_size) Step 4: The OpenSSL Fallback Method If HTTP

# If the file has 'Salted__' header, extract salt and use custom KDF if ciphertext[:8] == b'Salted__': salt = ciphertext[8:16] # You'd need to re-derive key using EVP_BytesToKey (OpenSSL) # Skipping for brevity - see step 4 for OpenSSL method

print(f"Decryption successful. Output: output_file") decrypt_hc_exclusive("exclusive_config.hc", "decrypted_config.json", key="16bytekey123456", iv="16byteiv12345678")

The IV (Initialization Vector) may be static (e.g., all zeros) or prepended to the ciphertext. Check the APK's source for IvParameterSpec . Step 4: The OpenSSL Fallback Method If HTTP Custom uses OpenSSL's EVP_BytesToKey (common in older versions), you can use OpenSSL command line directly.