Python调用，爬虫JS逆向——动态数据

JS逆向-ajax加密数据

加密数据是无法通过在后台找到接口进行请求来获取数据

目标网站：https://jzsc.mohurd.gov.cn/data/company

1. 通过查找无法找到接口位置

2. 点击清除，在点击下一页，可以看到加载到加密数据。

3. 刷新网站，搜索JSON.parse和webAPI。找到接口位置，找到JS入口文件，进行操作。

4. 进入JS文件，对其进行格式化输出，搜索JSON关键字，加断点。

5.再次点击下一页，可以看到data出现加密数据。

6.在控制台输出，t.data将数据写入JS启动脚本中。

7.点击下一步，进入方法中，将方法写入JS脚本中，补齐缺失参数。

8.安装crypto-js，对方法进行修改。

npm install crypto-js

9.启动JS脚本，缺少f数据，在网站中找到f的参数。

10.找到f和m参数，添加到JS脚本中，修改d.a为CryptoJS。

11.再次启动脚本，获得数据。

代码参考

/// https://jzsc.mohurd.gov.cn/data/company
const CryptoJS = require('crypto-js')

f = CryptoJS.enc.Utf8.parse("jo8j9wGw%6HbxfFn")
m = CryptoJS.enc.Utf8.parse("0123456789ABCDEF");

function h(t) {
    
            var e = CryptoJS.enc.Hex.parse(t)
              , n = CryptoJS.enc.Base64.stringify(e)
              , a = CryptoJS.AES.decrypt(n, f, {
    
                iv: m,
                mode: CryptoJS.mode.CBC,
                padding: CryptoJS.pad.Pkcs7
            })
              , r = a.toString(CryptoJS.enc.Utf8);
            return r.toString()
        }

data = '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console.log(h(data)) ///启动