How To Decrypt Http Custom File
"type": "SSH",
"server": "sg1.example.com",
"port": 443,
"payload": "CONNECT [host_port] HTTP/1.1[crlf]Host: google.com[crlf][crlf]",
"sni": "cloudfront.net",
"proxy": "127.0.0.1:8080"
You can use various tools to decrypt custom HTTP files, depending on the encryption algorithm and your programming language of choice. Some popular tools include:
Workaround: Manually copy the config settings within HTTP Custom (screenshot or text copy) and recreate the file.
Example with Python (RSA):
from cryptography.hazmat.primitives import serialization
from cryptography.hazmat.primitives.asymmetric import rsa
from cryptography.hazmat.primitives import hashes
from cryptography.hazmat.primitives.asymmetric import padding
# Load the private key
private_key = serialization.load_pem_private_key(
open("private_key.pem", "rb").read(),
password=None,
)
# Example usage
ciphertext = b'\x34\x54' # Example ciphertext
plaintext = private_key.decrypt(
ciphertext,
padding.OAEP(
mgf=padding.MGF1(algorithm=hashes.SHA256()),
algorithm=hashes.SHA256(),
label=None
)
)
print(plaintext)
plain = try_base64(raw) if not plain: plain = try_xor_bruteforce(raw) how to decrypt http custom file
if plain: # Attempt to parse as JSON try: config = json.loads(plain) print("Decrypted config:", json.dumps(config, indent=2)) except: print("Raw decrypted text:\n", plain) else: print("Could not decrypt – possibly AES. Provide key.")
85% of custom HTTP Custom files use a simple XOR cipher with a single-byte key (0x00 to 0xFF) or a multi-byte key like "HTTPCUSTOM".
Detection:
Open the file in HxD. If you see repetitive patterns or many 00 or FF bytes after guessing, it's XOR. "type": "SSH",
"server": "sg1
Decryption using Python:
def xor_decrypt(data, key):
return bytes([data[i] ^ key[i % len(key)] for i in range(len(data))])
with open("encrypted.hc", "rb") as f:
encrypted_bytes = f.read()
HTTP Custom uses AES-128-CBC or AES-256-CBC encryption by default, with a user-defined password. The encrypted data is then base64-encoded and saved with specific headers that the app recognizes. Without the correct password, the file appears as gibberish. You can use various tools to decrypt custom
Typical encrypted header:
HC_ENC||BASE64_DATA
Important: The encryption is not designed for military-grade security — it's primarily to prevent casual editing or unauthorized redistribution.