obfused_base64.py

import base64
import random
import string

chars = string.ascii_letters + string.digits


def base64_encode(data):
    encoded_bytes = base64.b64encode(data.encode("utf-8"))
    return encoded_bytes.decode("utf-8")


def base64_decode(encoded_data):
    decoded_bytes = base64.b64decode(encoded_data.encode("utf-8"))
    return decoded_bytes.decode("utf-8")


# 混淆编码
def obfuscate_base64(encoded_data, positions):
    encoded_list = list(encoded_data)
    # 逆序插入字符，确保位置不变
    for pos in sorted(positions, reverse=True):
        if pos < len(encoded_list):
            encoded_list.insert(pos, random.choice(chars))
    return "".join(encoded_list)


# 解混淆
def deobfuscate_base64(obfuscated_data, positions):
    obfuscated_list = list(obfuscated_data)
    for pos in positions:
        if pos < len(obfuscated_list):
            del obfuscated_list[pos]
    deobfuscated_data = "".join(obfuscated_list)
    return deobfuscated_data


# 生成固定插入位置
def generate_fixed_positions(length):
    return [i for i in range(0, length, 2)]


# 示例
data = "wd98"

encoded_data = base64_encode(data)
print(f"Original Encoded Data: {encoded_data}")

positions = generate_fixed_positions(len(encoded_data))
print(f"Positions: {positions}")

# 混淆编码数据
obfuscated_data = obfuscate_base64(encoded_data, positions)
print(f"Obfuscated Encoded Data: {obfuscated_data}")

# 解混淆编码数据
deobfuscated_data = deobfuscate_base64(obfuscated_data, positions)
print(f"Deobfuscated Encoded Data: {deobfuscated_data}")

decoded_data = base64_decode(deobfuscated_data)
print(f"Decoded Data: {decoded_data}")