Reverse analysis of APP of a big factory

Decrypt the sign, splicing the key-value in the header and data, splicing the front and back and salt value, and encrypting with MD5;

This chapter records the position of the algorithm for positioning, which is convenient for subsequent viewing;

demo:

# -*- coding: utf-8 -*-
# @Author  : Codeooo
# @Time    : 2022-11-23
import hashlib
import random