当前位置：首页 > article >正文

江西省技能培训平台(逆向破解登录国密SM2)

article 2024/11/7 11:36:58

江西省技能培训平台(逆向破解登录)

登录破解(国密sm2加密方式)

请求接口

https://api.cloud.wozhipei.com/auth/user/v1/login

使用身份证和密码登录发现有password加密，好开始逆向js

全局搜索发现使用国密SM2进行加密

模拟算法

js

使用js进行模拟算法

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<script src="./sm2.js"></script>
<script src="./base64.js"></script>
<script>
    async function fetchPublicKeyAndEncrypt() {
        try {
            // 发送fetch请求并等待响应数据解析为JSON格式
            let response = await fetch('https://api.cloud.wozhipei.com/auth/user/v1/public_key', {
                method: 'GET',
                headers: {
                    'Content-Type': 'application/json',
                    "User-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36",
                }
            });


            let result = await response.json();

            console.log('提交成功，服务器返回:', result["data"]);
            console.log('sm2Encrypt', sm2);

            // 获取公钥
            let publicKey = result["data"];

            // 待加密的密码
            let pwd = "你的密码";
            let cipherMode = 1; // 1 - C1C3C2，0 - C1C2C3，默认为1
            console.log("编码后的pwd: ",btoa(pwd))
            // 等待加密操作完成并获取加密后的数据
            let encryptData = await sm2.doEncrypt(btoa(pwd), publicKey, cipherMode);

            return {publicKey, encryptData};
                }
                catch
                    (error)
                    {
                        console.error('请求出错:', error);
                    }
                }

    async function login(data) {
        try {
            // 发送fetch请求并等待响应数据解析为JSON格式
            let response = await fetch('https://api.cloud.wozhipei.com/auth/user/v1/login', {
                method: 'POST',
                body: data,
                headers: {
                    'Content-Type': 'application/json',
                    "User-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36",
                }
            });
            console.log('响应:', response);
            let result = await response.json();
            return result

        } catch (error) {
            console.error('请求出错:', error);
        }
    }

// 调用异步函数并处理返回值
    fetchPublicKeyAndEncrypt().then(({publicKey, encryptData}) => {
        if (publicKey && encryptData) {
            var data = {
                "account": "你的身份证",
                "appKey": "WEB",
                "sid": 1018,
                "type": 1,
                "authOpenId": "",
                "authType": "",
                "publicKey": publicKey,
                "password": encryptData
            }
            console.log('获取到的公钥:', publicKey);
            console.log('加密后的数据:', encryptData);
            console.log('请求体:', JSON.stringify(data));
            login(JSON.stringify(data)).then(res => {
                  console.log('loingrespionse:', res);
                })

        }
    });


</script>
<body>

</body>

</html>

成功登录:

python

python使用gmssl，注意这里有个坑,
直接pip install gmssl 下载的版本是3.2.1的是旧版的sm2加密方式开始用旧标准的一直没校验不通过这个坑我走了好久，这要感谢我的学弟发现这个坑

有两个标准，这个网站是新标准的，如果使用旧标准的话后端无法解密导致校验不通过。

旧版3.2.1

新版3.2.2

代码:

# coding=gb2312
from gmssl import sm2
import requests
from base64 import b64encode


def getToken(idCar, pwd):
    public_keyUrl = "https://api.cloud.wozhipei.com/auth/user/v1/public_key"

    headers = {
        "User-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36",
        "Content-Type": "application/json"
    }

    response = requests.get(public_keyUrl, headers=headers)
    public_key = response.json()["data"]

    def encrypt(data):
        # sm2 加密
        sm2_crypt = sm2.CryptSM2(public_key=public_key, private_key="", mode=1)
        return sm2_crypt.encrypt(data).hex()

    data_str = pwd
    data_bytes = data_str.encode('utf-8')
    encoded_data = b64encode(data_bytes)
    encryptData = encrypt(encoded_data)

    data = {
        "account": idCar,
        "appKey": "WEB",
        "sid": 1018,
        "type": 1,
        "authOpenId": "",
        "authType": "",
        "publicKey": public_key,
        "password": encryptData
    }

    response = requests.post("https://api.cloud.wozhipei.com/auth/user/v1/login", headers=headers, json=data)
    return response.content.decode("utf-8")

token = getToken("身份证", "密码")
print(token)