js逆向算法

js逆向算法

有四个项目，简单介绍 js逆向算法
有道翻译
md5算法
aes加密解密

有道翻译

把参数变成json：GET参数转为json

 

```python
import requests

url = "https://dict.youdao.com/webtranslate"

params = {
    "i": "hello world",
    "from": "auto",
    "to": "",
    "dictResult": "true",
    "keyid": "webfanyi",
    "sign": "632ae4afd4a1830f0b96f65fff246ec7",
    "client": "fanyideskweb",
    "product": "webfanyi",
    "appVersion": "1.0.0",
    "vendor": "web",
    "pointParam": "client,mysticTime,product",
    "mysticTime": "1695903083326",
    "keyfrom": "fanyi.web",
    "mid": "1",
    "screen": "1",
    "model": "1",
    "network": "wifi",
    "abtest": "0",
    "yduuid": "abcdefg"
}

headers = {
    "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36",
    "Referer": "https://fanyi.youdao.com/",
    "Origin": "https://fanyi.youdao.com",
    "Host": "dict.youdao.com",
    "Cookie": "[email protected]; OUTFOX_SEARCH_USER_ID_NCOO=1872982014.8885865"
}

result = requests.post(url, data=params, headers=headers).text


print(result)

md5算法

import hashlib


str = "hello world"

res = hashlib.md5(str.encode("utf-8")).hexdigest()  # 获取加密后的内容

print(len(res))
print( res )

aes加密解密

aes加密解密

"""
下载加密库
pip install pycryptodomex
"""


import json
from base64 import b64encode, b64decode
from Cryptodome.Cipher import AES
from Cryptodome.Util.Padding import pad, unpad
from Cryptodome.Random import get_random_bytes


"""
AES  cbc模式 加密
"""

# data = b"secret"   #  明文
# key = get_random_bytes(16)   # 获取密钥
# cipher = AES.new(key, AES.MODE_CBC)  # 生成加密对象
# ct_bytes = cipher.encrypt(pad(data, AES.block_size))  # 加密
# iv = b64encode(cipher.iv).decode('utf-8')  # 随机向量
# ct = b64encode(ct_bytes).decode('utf-8')  # 密文
# result = json.dumps({'iv':iv, 'ciphertext':ct})   # 把整个内容变成JSON字符串
#
# print(result)



# 明文
data = "今天是个好日子".encode("utf-8")  # 明文要编码成二进制
key = "1234567887654321".encode("utf-8")  # 16个字节
iv = "1234567812345678".encode("utf-8")  # 创建随机向量
cipher = AES.new(key, AES.MODE_CBC, iv=iv)  # 创建一个cbc模式的加密对象
res = cipher.encrypt(pad(data, AES.block_size))  # 加密内容

# 把二进制内容转成字符串（方便传输和存储）
res = b64encode(res).decode("utf-8")
print(res)


""""
解密
zsE+R4jmK2TARqmNTNQYGNOHhhQOD5OPYpkK9XTVfwk=
"""



# 创建解密对象

cipher2 = AES.new(key, AES.MODE_CBC, iv)

text = b64decode("zsE+R4jmK2TARqmNTNQYGNOHhhQOD5OPYpkK9XTVfwk=")  # base64编码

# print(text)
res = unpad(cipher2.decrypt(text), AES.block_size)  # 去掉填充物

res = res.decode("utf-8")
print(res)