Update 2022-07-29

README.md

@@ -82,7 +82,7 @@
 | [逆向进阶，利用 AST 技术还原 JavaScript 混淆代码](https://mp.weixin.qq.com/s/fIbPuNMs5FRADJE5MOZXgA) | \ |
 | [【JS 逆向百例】AST 脱混淆实战，某 ICP 备案号查询接口 jsjiami v6 分析](https://mp.weixin.qq.com/s/YuP8oC1Do9x9wdk-I-GCeQ) | [icp_chinaz_com](https://github.com/kgepachong/crawler/tree/main/icp_chinaz_com) |
 | [人均瑞数系列，瑞数 4 代 JS 逆向分析](https://mp.weixin.qq.com/s/0uzPRiPdSargFlDM-TwAWw) | \ |
-| 【JS 逆向百例】某公共资源交易网，公告 URL 参数逆向分析 | [ggzy_jcs_gov_cn](https://github.com/kgepachong/crawler/tree/main/ggzy_jcs_gov_cn) |
+| [【JS 逆向百例】某公共资源交易网，公告 URL 参数逆向分析](https://mp.weixin.qq.com/s/mec3zlTj5-rGRD1vfKrDBg) | [ggzy_jcs_gov_cn](https://github.com/kgepachong/crawler/tree/main/ggzy_jcs_gov_cn) |
 ---
 
 <br>

mps_gov_cn/jsl.js

@@ -0,0 +1,54 @@
+var CryptoJS = require('crypto-js');
+
+
+function hash(type, value){
+ if(type == 'md5'){
+ return CryptoJS.MD5(value).toString();
+ }
+ if(type == 'sha1'){
+ return CryptoJS.SHA1(value).toString();
+ }
+ if(type == 'sha256'){
+ return CryptoJS.SHA256(value).toString();
+ }
+}
+
+
+var _0x2228a0 = {
+ "mLZyz" : function(_0x435347, _0x8098d) {
+ return _0x435347 < _0x8098d;
+ },
+ "SsARo" : function(_0x286fd4, _0x10b2a6) {
+ return _0x286fd4 + _0x10b2a6;
+ },
+ "jfMAx" : function(_0x6b4da, _0x19c099) {
+ return _0x6b4da + _0x19c099;
+ },
+ "HWzBW" : function(_0x3b9d7f, _0x232017) {
+ return _0x3b9d7f + _0x232017;
+ },
+ "DRnYs" : function(_0x4573a2, _0x3855be) {
+ return _0x4573a2 == _0x3855be;
+ },
+ "ZJMqu" : function(_0x3af043, _0x1dbbb7) {
+ return _0x3af043 - _0x1dbbb7;
+ },
+};
+
+
+function cookies(_0x60274b){
+ var _0x34d7a8 = new Date();
+ function _0x14e035(_0x56cbce, _0x5e5712) {
+ var _0x2d0a43 = _0x60274b['chars']['length'];
+ for (var _0x212ce4 = 0x0; _0x212ce4 < _0x2d0a43; _0x212ce4++) {
+ for (var _0x8164 = 0x0; _0x2228a0["mLZyz"](_0x8164, _0x2d0a43); _0x8164++) {
+ var _0x2a7ea9 = _0x5e5712[0] + _0x60274b["chars"]["substr"](_0x212ce4, 1) + _0x60274b["chars"]["substr"](_0x8164, 1) + _0x5e5712[1];
+ if (_0x2228a0["DRnYs"](hash(_0x60274b['ha'], _0x2a7ea9), _0x56cbce)) {
+ return [_0x2a7ea9, _0x2228a0["ZJMqu"](new Date(), _0x34d7a8)];
+ }
+ }
+ }
+ }
+ var _0x732635 = _0x14e035(_0x60274b['ct'], _0x60274b['bts']);
+ return {'__jsl_clearance_s' : _0x732635[0]};
+}

mps_gov_cn/jsl.py

@@ -0,0 +1,63 @@
+# =======================
+# --*-- coding: utf-8 --*--
+# @Time : 2022/7/27
+# @Author : 微信公众号：K哥爬虫
+# @FileName: jsl.py
+# @Software: PyCharm
+# =======================
+
+
+import json
+import re
+import requests
+import execjs
+
+
+cookies = {}
+headers = {
+ "User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36"
+}
+url = "https://www.mps.gov.cn/index.html"
+
+
+def get_first_cookie():
+ global cookies
+ resp_first = requests.get(url=url, headers=headers)
+ # 获取 cookie 值 __jsluid_s
+ cookies.update(resp_first.cookies)
+ # 获取第一层响应内容, AAEncode 加密
+ content_first = re.findall('cookie=(.*?);location', resp_first.text)[0]
+ jsl_clearance_s = execjs.eval(content_first).split(';')[0]
+ # 获取 cookie 值 __jsl_clearance_s
+ cookies['__jsl_clearance_s'] = jsl_clearance_s.split("=")[1]
+
+
+def get_second_cookie():
+ global cookies
+ # 通过携带 jsluid_s 和 jsl_clearance_s 值的 cookie 获取第二层响应内容
+ resp_second = requests.get(url=url, headers=headers, cookies=cookies)
+ # 获取 go 字典参数
+ go_params = re.findall(';go\((.*?)\)</script>', resp_second.text)[0]
+ params = json.loads(go_params)
+ return params
+
+
+def get_third_cookie():
+ with open('jsl.js', 'r', encoding='utf-8') as f:
+ jsl_js = f.read()
+ params = get_second_cookie()
+ # 传入字典
+ third_cookie = execjs.compile(jsl_js).call('cookies', params)
+ cookies.update(third_cookie)
+
+
+def main():
+ get_first_cookie()
+ get_third_cookie()
+ resp_third = requests.get(url=url, headers=headers, cookies=cookies)
+ resp_third.encoding = 'utf-8'
+ print(resp_third.text)
+
+
+if __name__ == '__main__':
+ main()