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“JS逆向 | Python爬虫 | 动态cookie如何破~”

ccvgpt 2024-11-26 00:49:13 基础教程 1 ℃

案例目标

目标网址：aHR0cHMlM0EvL21hdGNoLnl1YW5yZW54dWUuY29tL21hdGNoLzI=

本题目标：提取全部 5 页发布日热度的值，计算所有值的加和，并提交答案

常规 JavaScript 逆向思路

JavaScript 逆向工程通常分为以下三步：

寻找入口：逆向工程的核心在于找出加密参数的生成方式。关键逻辑可能隐藏在某个方法或变量中。一个网站可能加载了大量 JavaScript 文件，关键在于从这些文件中找到核心代码的位置。
调试分析：找到入口后，定位到可能执行关键参数的方法。接着，分析内部逻辑，了解使用了哪些加密算法和变量赋值变换。通过整理整体思路，利用断点或反混淆工具进行详细调试分析。
模拟执行：通过调试分析，掌握了逻辑后，需要复现加密过程，以获取最终所需的数据。

开始分析

1、打开chrome浏览器后，打开开发者工具，然后在开始之前，先清空一下缓存

2、重新刷新网页，发现网站开始进入 debugger；

解决的办法有以下几种：

1.禁用此处断点，在 debugger 行数单击鼠标右键，选择【never paush here】然后刷新页面h或点击下一步断点（F8）即可。
2.添加条件断点，同样，在行数单击右键，选择【add conditional breakpoint】然后输入 false，回车后再刷新页面
...

1.禁用此处断点，在 debugger 行数单击鼠标右键，选择【never paush here】然后刷新页面h或点击下一步断点（F8）即可。 2.添加条件断点，同样，在行数单击右键，选择【add conditional breakpoint】然后输入 false，回车后再刷新页面 ...

3、在 Network 中可以看到热度值的 api 数据接口为2，响应预览中可以看到当前页面各手机型号发布日热度值：

4、查看这个接口，好像也没什么特殊的地方

5、点击到第二页的时候有概率会提示：cookie 失效，正在重置页面：

6、点击确定，对比请求头，再结合题目，判定问题就出在这个动态cookie上，而且就是 m ：

7、看下 m 的具体属性，并非服务器直接设置：

cookie 中的 m 参数的样式如下：
2df979fcd34a0bfe193d10c45cae4632|1717209153000

8、（右键）清除 m 值重新加载页面

可以看到两个一样的请求，但是一个cookie 没有 m，看不到响应，且响应头没有 setcookie，另一个请求的 cookie 带有 m 值。由此猜测，cookie 中的 m 值是第一次请求后由 js 生成出来的。

9、既然第一个请求这么奇怪，我们使用 requests 看下它到底作了什么妖0*0。

用 fidder 抓包或者 python 请求可以发现其返回的是一个混淆的 js 代码：

#!usr/bin/env python
# -*- coding:utf-8 _*-
import requests
cookies = {
'tk': '-5621756640779912732',
'sessionid': 'qdlnifuic3h3iygdq3rcaoxpyrdo9c82',
'qpfccr': 'true',
'no-alert3': 'true',
}
headers = {
'accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7',
'accept-language': 'zh',
'cache-control': 'no-cache',
# 'cookie': 'tk=-5621756640779912732; sessionid=qdlnifuic3h3iygdq3rcaoxpyrdo9c82; qpfccr=true; no-alert3=true',
'pragma': 'no-cache',
'priority': 'u=0, i',
'referer': 'https://match.yuanrenxue.cn/match/2',
'sec-ch-ua': '"Google Chrome";v="125", "Chromium";v="125", "Not.A/Brand";v="24"',
'sec-ch-ua-mobile': '?0',
'sec-ch-ua-platform': '"Windows"',
'sec-fetch-dest': 'document',
'sec-fetch-mode': 'navigate',
'sec-fetch-site': 'same-origin',
'sec-fetch-user': '?1',
'upgrade-insecure-requests': '1',
'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36',
}
response = requests.get('https://match.yuanrenxue.cn/match/2', cookies=cookies, headers=headers)
print(response.text)

发现返回了一堆 js 代码，进一步验证了 cookie 是由 js 生成的猜想：

浏览器调试

知道了大概位置，就可以开始找具体代码了。

在源代码选项卡中找到事件监听断点，勾选脚本，这样在遇到js时会自动断下，清除浏览器中保存的 cookie，刷新界面

这里 hook 下 cookie：

(function () {
    Object.defineProperty(document, 'cookie', {
        set: function (val) {
            debugger;
            return val;
        },
    });
})();

hook 好以后让网页继续运行，成功断在 cookie 生成位置:

此时的 m 已经生成出来了，不过可以通过调用堆栈往前找到生成的位置。

_0x36f9ed[$dbsm_0x2d28('\x30\x78\x34\x63\x31', '\x51\x6e\x61\x7a') + '\x79\x68'](_0x36f9ed['\x4c\x4b\x61' + '\x79\x68'](_0x36f9ed[$dbsm_0x2d28('\x30\x78\x34\x39\x33', '\x34\x33\x55\x36') + '\x63\x4a'](_0x36f9ed[$dbsm_0x2d28('\x30\x78\x31\x36\x66', '\x7a\x6f\x74\x26') + '\x63\x7a'](_0x36f9ed[$dbsm_0x2d28('\x30\x78\x31\x64\x35', '\x65\x38\x34\x67') + '\x43\x44'](_0x36f9ed['\x54\x65\x61' + '\x43\x44']('\x6d', _0x36f9ed[$dbsm_0x2d28('\x30\x78\x33\x32\x37', '\x40\x6e\x71\x49') + '\x46\x4b'](_0x49aa7c)), '\x3d'), _0x36f9ed['\x57\x58\x6b' + '\x66\x77'](_0x5d6009, _0x26b6ca)), '\x7c'), _0x26b6ca), _0x36f9ed['\x41\x73\x54' + '\x75\x6d']);
                location[$dbsm_0x2d28('\x30\x78\x63\x34', '\x57\x6f\x5b\x4f') + $dbsm_0x2d28('\x30\x78\x34\x64\x36', '\x72\x50\x50\x79')]();

再来看下_0x36f9ed:

这个_0x36f9ed里面包含了很多字符串和函数，也就是说上面的代码都是在调用它里面的函数。

稍加整理：

_0x36f9ed['LKayh'](
_0x36f9ed['LKayh'](
_0x36f9ed['yYtcJ'](
_0x36f9ed['TCacz'](
_0x36f9ed['TeaCD'](
_0x36f9ed['TeaCD']('m', 
_0x36f9ed["TZmFK"](_0x49aa7c)), '='), 
_0x36f9ed['WXkfw'](_0x5d6009, _0x26b6ca)), '|'), _0x26b6ca),
 _0x36f9ed['AsTum']);

这是个大套娃函数，逐一验证：

也就是最后只要计算：

_0x36f9ed['WXkfw'](_0x5d6009, _0x26b6ca) + '|' + _0x26b6ca

剩下的就是补环境了。

用猿人学的采集工具解混淆(tool.yuanrenxue.cn/decode_obfu…

解混淆之后的代码如下：

setInterval(function () {
  $dbsm_0x2cce85();
}, 4000);

(function $dbsm_0x5bf942(_0x31e196) {
  var _0x39cca0 = function () {
    var _0x13d1a6 = true;
    return function (_0x4cd36a, _0x4e4df1) {
      var _0x51fcc5 = _0x13d1a6 ? function () {
        if (_0x4e4df1) {
          var _0x174e7c = _0x4e4df1["apply"](_0x4cd36a, arguments);

          _0x4e4df1 = null;
          return _0x174e7c;
        }
      } : function () {};

      _0x13d1a6 = false;
      return _0x51fcc5;
    };
  }();

  var _0x5a13d7 = function () {
    var _0x1aa8c9 = true;
    return function (_0xdbfd1d, _0x5bfa4e) {
      var _0x1409db = _0x1aa8c9 ? function () {
        if (_0x5bfa4e) {
          var _0x2f8d9f = _0x5bfa4e["apply"](_0xdbfd1d, arguments);

          _0x5bfa4e = null;
          return _0x2f8d9f;
        }
      } : function () {};

      _0x1aa8c9 = false;
      return _0x1409db;
    };
  }();

  function _0x7d37cb(_0x47959e, _0x3bc00b) {
    var _0x11ade0 = (65535 & _0x47959e) + (65535 & _0x3bc00b);

    return (_0x47959e >> 16) + (_0x3bc00b >> 16) + (_0x11ade0 >> 16) << 16 | 65535 & _0x11ade0;
  }

  function _0x142d6a(_0x1bbddf, _0x3f144b) {
    return _0x1bbddf << _0x3f144b | _0x1bbddf >>> 32 - _0x3f144b;
  }

  function _0x3649fb(_0x21be27, _0xe6370b, _0x5eeffe, _0x11f158, _0x40461a, _0x2ee259) {
    return _0x7d37cb(_0x142d6a(_0x7d37cb(_0x7d37cb(_0xe6370b, _0x21be27), _0x7d37cb(_0x11f158, _0x2ee259)), _0x40461a), _0x5eeffe);
  }

  function _0x106504(_0x3f4fd4, _0x3c217b, _0x277540, _0x4ef3b1, _0x3be99b, _0x2d706f, _0x180aad) {
    return _0x3649fb(_0x3c217b & _0x277540 | ~_0x3c217b & _0x4ef3b1, _0x3f4fd4, _0x3c217b, _0x3be99b, _0x2d706f, _0x180aad);
  }

  function _0x569d9f(_0x3a1a35, _0x4e6ac2, _0x5a49a9, _0x312136, _0xd2eee1, _0x156125, _0x396c4c) {
    return _0x3649fb(_0x4e6ac2 & _0x312136 | _0x5a49a9 & ~_0x312136, _0x3a1a35, _0x4e6ac2, _0xd2eee1, _0x156125, _0x396c4c);
  }

  function _0x25e694(_0x2a8b77, _0x6278a0) {
    let _0x124cc7 = [99, 111, 110, 115, 111, 108, 101];
    let _0x23a395 = "";

    for (let _0x29cf05 = 0; _0x29cf05 < _0x124cc7["length"]; _0x29cf05++) {
      _0x23a395 += String["fromCharCode"](_0x124cc7[_0x29cf05]);
    }

    return _0x23a395;
  }

  function _0x573502(_0x21e7a6, _0x87331, _0xb0313, _0x3c93cc, _0x2b42ca, _0x490f6b, _0x18e811) {
    return _0x3649fb(_0x87331 ^ _0xb0313 ^ _0x3c93cc, _0x21e7a6, _0x87331, _0x2b42ca, _0x490f6b, _0x18e811);
  }

  function _0xc20d2b(_0x130de7, _0x243ab5, _0x5c559a, _0x4eb361, _0x178d6a, _0x3871a0, _0x325335) {
    return _0x3649fb(_0x5c559a ^ (_0x243ab5 | ~_0x4eb361), _0x130de7, _0x243ab5, _0x178d6a, _0x3871a0, _0x325335);
  }

  function _0x116551(_0x1dbd19, _0x3eb31e) {
    if (_0x3eb31e) {
      return _0xc20d2b(_0x1dbd19);
    }

    return _0x25e694(_0x1dbd19);
  }

  function _0x118b69(_0x118b98, _0x4dc3aa) {
    let _0x5350c = "";

    for (let _0x51d6de = 0; _0x51d6de < _0x118b98["length"]; _0x51d6de++) {
      _0x5350c += String["fromCharCode"](_0x118b98[_0x51d6de]);
    }

    return _0x5350c;
  }

  function _0x7c9cae(_0x218784, _0x102f11) {
    var _0x4a24af = _0x39cca0(this, function () {
      var _0x58b618 = function () {
        var _0x4e2deb = _0x58b618["constructor"]("return /\" + this + \"/")()["compile"]("^([^ ]+( +[^ ]+)+)+[^ ]}");

        return !_0x4e2deb["test"](_0x4a24af);
      };

      return _0x58b618();
    });

    _0x4a24af();

    (function () {
      _0x5a13d7(this, function () {
        var _0x22c2f7 = new RegExp("function *\\( *\\)");

        var _0x1449c8 = new RegExp("\\+\\+ *(?:[a-zA-Z_$][0-9a-zA-Z_$]*)", "i");

        var _0x543b10 = $dbsm_0x2cce85("init");

        if (!_0x22c2f7["test"](_0x543b10 + "chain") || !_0x1449c8["test"](_0x543b10 + "input")) {
          _0x543b10("0");
        } else {
          $dbsm_0x2cce85();
        }
      })();
    })();

    _0x116551();

    qz = [10, 99, 111, 110, 115, 111, 108, 101, 32, 61, 32, 110, 101, 119, 32, 79, 98, 106, 101, 99, 116, 40, 41, 10, 99, 111, 110, 115, 111, 108, 101, 46, 108, 111, 103, 32, 61, 32, 102, 117, 110, 99, 116, 105, 111, 110, 32, 40, 115, 41, 32, 123, 10, 32, 32, 32, 32, 119, 104, 105, 108, 101, 32, 40, 49, 41, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 102, 111, 114, 40, 105, 61, 48, 59, 105, 60, 49, 49, 48, 48, 48, 48, 48, 59, 105, 43, 43, 41, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 104, 105, 115, 116, 111, 114, 121, 46, 112, 117, 115, 104, 83, 116, 97, 116, 101, 40, 48, 44, 48, 44, 105, 41, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 125, 10, 32, 32, 32, 32, 125, 10, 10, 125, 10, 99, 111, 110, 115, 111, 108, 101, 46, 116, 111, 83, 116, 114, 105, 110, 103, 32, 61, 32, 39, 91, 111, 98, 106, 101, 99, 116, 32, 79, 98, 106, 101, 99, 116, 93, 39, 10, 99, 111, 110, 115, 111, 108, 101, 46, 108, 111, 103, 46, 116, 111, 83, 116, 114, 105, 110, 103, 32, 61, 32, 39, 402, 32, 116, 111, 83, 116, 114, 105, 110, 103, 40, 41, 32, 123, 32, 91, 110, 97, 116, 105, 118, 101, 32, 99, 111, 100, 101, 93, 32, 125, 39, 10];
    eval(_0x118b69(qz));

    try {
      if (global) {
        console["log"]("人生苦短，何必python？");
      } else {
        while (1) {
          console["log"]("人生苦短，何必python？");
          debugger;
        }
      }
    } catch (_0x5709da) {
      return navigator["vendorSub"];
    }
  }

  setInterval(_0x7c9cae(), 500);

  function _0x8d8432(_0x12522f, _0x52357b) {
    _0x12522f[_0x52357b >> 5] |= 128 << _0x52357b % 32, _0x12522f[14 + (_0x52357b + 64 >>> 9 << 4)] = _0x52357b;

    if (qz) {
      var _0x2dd6a2,
          _0x9afb13,
          _0x597da2,
          _0xf510a0,
          _0x500042,
          _0x5805e5 = 1732584193,
          _0x480c88 = -271733879,
          _0x1943ed = -1732584194,
          _0x5d4ef3 = 271733878;
    } else {
      var _0x2dd6a2,
          _0x9afb13,
          _0x597da2,
          _0xf510a0,
          _0x500042,
          _0x5805e5 = 0,
          _0x480c88 = -0,
          _0x1943ed = -0,
          _0x5d4ef3 = 0;
    }

    for (_0x2dd6a2 = 0; _0x2dd6a2 < _0x12522f["length"]; _0x2dd6a2 += 16) _0x9afb13 = _0x5805e5, _0x597da2 = _0x480c88, _0xf510a0 = _0x1943ed, _0x500042 = _0x5d4ef3, _0x5805e5 = _0x106504(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2], 7, -680876936), _0x5d4ef3 = _0x106504(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 1], 12, -389564586), _0x1943ed = _0x106504(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 2], 17, 606105819), _0x480c88 = _0x106504(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 3], 22, -1044525330), _0x5805e5 = _0x106504(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 4], 7, -176418897), _0x5d4ef3 = _0x106504(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 5], 12, 1200080426), _0x1943ed = _0x106504(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 6], 17, -1473231341), _0x480c88 = _0x106504(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 7], 22, -45705983), _0x5805e5 = _0x106504(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 8], 7, 1770010416), _0x5d4ef3 = _0x106504(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 9], 12, -1958414417), _0x1943ed = _0x106504(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 10], 17, -42063), _0x480c88 = _0x106504(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 11], 22, -1990404162), _0x5805e5 = _0x106504(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 12], 7, 1804603682), _0x5d4ef3 = _0x106504(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 13], 12, -40341101), _0x1943ed = _0x106504(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 14], 17, -1502882290), _0x480c88 = _0x106504(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 15], 22, 1236535329), _0x5805e5 = _0x569d9f(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 1], 5, -165796510), _0x5d4ef3 = _0x569d9f(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 6], 9, -1069501632), _0x1943ed = _0x569d9f(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 11], 14, 643717713), _0x480c88 = _0x569d9f(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2], 20, -373897302), _0x5805e5 = _0x569d9f(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 5], 5, -701558691), _0x5d4ef3 = _0x569d9f(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 10], 9, 38016083), _0x1943ed = _0x569d9f(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 15], 14, -660478335), _0x480c88 = _0x569d9f(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 4], 20, -405537848), _0x5805e5 = _0x569d9f(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 9], 5, 568446438), _0x5d4ef3 = _0x569d9f(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 14], 9, -1019803690), _0x1943ed = _0x569d9f(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 3], 14, -187363961), _0x480c88 = _0x569d9f(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 8], 20, 1163531501), _0x5805e5 = _0x569d9f(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 13], 5, -1444681467), _0x5d4ef3 = _0x569d9f(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 2], 9, -51403784), _0x1943ed = _0x569d9f(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 7], 14, 1735328473), _0x480c88 = _0x569d9f(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 12], 20, -1926607734), _0x5805e5 = _0x573502(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 5], 4, -378558), _0x5d4ef3 = _0x573502(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 8], 11, -2022574463), _0x1943ed = _0x573502(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 11], 16, 1839030562), _0x480c88 = _0x573502(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 14], 23, -35309556), _0x5805e5 = _0x573502(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 1], 4, -1530992060), _0x5d4ef3 = _0x573502(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 4], 11, 1272893353), _0x1943ed = _0x573502(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 7], 16, -155497632), _0x480c88 = _0x573502(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 10], 23, -1094730640), _0x5805e5 = _0x573502(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 13], 4, 681279174), _0x5d4ef3 = _0x573502(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2], 11, -358537222), _0x1943ed = _0x573502(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 3], 16, -722521979), _0x480c88 = _0x573502(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 6], 23, 76029189), _0x5805e5 = _0x573502(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 9], 4, -640364487), _0x5d4ef3 = _0x573502(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 12], 11, -421815835), _0x1943ed = _0x573502(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 15], 16, 530742520), _0x480c88 = _0x573502(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 2], 23, -995338651), _0x5805e5 = _0xc20d2b(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2], 6, -198630844), _0x5d4ef3 = _0xc20d2b(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 7], 10, 1126891415), _0x1943ed = _0xc20d2b(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 14], 15, -1416354905), _0x480c88 = _0xc20d2b(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 5], 21, -57434055), _0x5805e5 = _0xc20d2b(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 12], 6, 1700485571), _0x5d4ef3 = _0xc20d2b(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 3], 10, -1894986606), _0x1943ed = _0xc20d2b(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 10], 15, -1051523), _0x480c88 = _0xc20d2b(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 1], 21, -2054922799), _0x5805e5 = _0xc20d2b(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 8], 6, 1873313359), _0x5d4ef3 = _0xc20d2b(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 15], 10, -30611744), _0x1943ed = _0xc20d2b(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 6], 15, -1560198380), _0x480c88 = _0xc20d2b(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 13], 21, 1309151649), _0x5805e5 = _0xc20d2b(_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3, _0x12522f[_0x2dd6a2 + 4], 6, -145523070), _0x5d4ef3 = _0xc20d2b(_0x5d4ef3, _0x5805e5, _0x480c88, _0x1943ed, _0x12522f[_0x2dd6a2 + 11], 10, -1120210379), _0x1943ed = _0xc20d2b(_0x1943ed, _0x5d4ef3, _0x5805e5, _0x480c88, _0x12522f[_0x2dd6a2 + 2], 15, 718787259), _0x480c88 = _0xc20d2b(_0x480c88, _0x1943ed, _0x5d4ef3, _0x5805e5, _0x12522f[_0x2dd6a2 + 9], 21, -343485441), _0x5805e5 = _0x7d37cb(_0x5805e5, _0x9afb13), _0x480c88 = _0x7d37cb(_0x480c88, _0x597da2), _0x1943ed = _0x7d37cb(_0x1943ed, _0xf510a0), _0x5d4ef3 = _0x7d37cb(_0x5d4ef3, _0x500042);

    return [_0x5805e5, _0x480c88, _0x1943ed, _0x5d4ef3];
  }

  function _0x288e8c(_0x5e1f58) {
    var _0x40d6a1,
        _0x7cf452 = "",
        _0x3a1a6f = 32 * _0x5e1f58["length"];

    for (_0x40d6a1 = 0; _0x40d6a1 < _0x3a1a6f; _0x40d6a1 += 8) _0x7cf452 += String["fromCharCode"](_0x5e1f58[_0x40d6a1 >> 5] >>> _0x40d6a1 % 32 & 255);

    return _0x7cf452;
  }

  function _0x148161(_0x54c23b) {
    var _0x541790,
        _0x2d3288 = [];

    for (_0x2d3288[(_0x54c23b["length"] >> 2) - 1] = undefined, _0x541790 = 0; _0x541790 < _0x2d3288["length"]; _0x541790 += 1) _0x2d3288[_0x541790] = 0;

    var _0x3592c6 = 8 * _0x54c23b["length"];

    for (_0x541790 = 0; _0x541790 < _0x3592c6; _0x541790 += 8) _0x2d3288[_0x541790 >> 5] |= (255 & _0x54c23b["charCodeAt"](_0x541790 / 8)) << _0x541790 % 32;

    return _0x2d3288;
  }

  function _0x2df11d(_0x222520) {
    return _0x288e8c(_0x8d8432(_0x148161(_0x222520), 8 * _0x222520["length"]));
  }

  function _0x31d955(_0x22a885) {
    var _0x1453c2,
        _0x572ebe,
        _0x5972e8 = "0123456789abcdef",
        _0x591bd4 = "";

    for (_0x572ebe = 0; _0x572ebe < _0x22a885["length"]; _0x572ebe += 1) _0x1453c2 = _0x22a885["charCodeAt"](_0x572ebe), _0x591bd4 += _0x5972e8["charAt"](_0x1453c2 >>> 4 & 15) + _0x5972e8["charAt"](15 & _0x1453c2);

    return _0x591bd4;
  }

  function _0x4cd524(_0x4d0787) {
    return unescape(encodeURIComponent(_0x4d0787));
  }

  function _0x43aebd(_0x3cb544) {
    return _0x2df11d(_0x4cd524(_0x3cb544));
  }

  function _0x108169(_0x560b09) {
    return _0x31d955(_0x43aebd(_0x560b09));
  }

  function _0x4b16d2(_0x512dd3, _0x4409d8, _0x5ac5df) {
    _0x7c9cae();

    return _0x4409d8 ? _0x5ac5df ? _0x25e694(_0x4409d8, _0x512dd3) : y(_0x4409d8, _0x512dd3) : _0x5ac5df ? _0x43aebd(_0x512dd3) : _0x108169(_0x512dd3);
  }

  function _0xd0746b(_0x72fc89, _0x56adac) {
    document["cookie"] = "m" + _0x7c9cae() + "=" + _0x4b16d2(_0x72fc89) + "|" + _0x72fc89 + "; path=/";
    location["reload"]();
  }

  function _0x325073(_0xaad9d3, _0x4c96a7) {
    return Date["parse"](new Date());
  }

  _0xd0746b(_0x325073());
})();

function $dbsm_0x2cce85(_0x1bb8eb) {
  function _0x1b4247(_0xaa9817) {
    if (typeof _0xaa9817 === "string") {
      return function (_0x203d62) {}["constructor"]("while (true) {}")["apply"]("counter");
    } else {
      if (("" + _0xaa9817 / _0xaa9817)["length"] !== 1 || _0xaa9817 % 20 === 0) {
        (function () {
          return true;
        })["constructor"]("debugger")["call"]("action");
      } else {
        (function () {
          return false;
        })["constructor"]("debugger")["apply"]("stateObject");
      }
    }

    _0x1b4247(++_0xaa9817);
  }

  try {
    if (_0x1bb8eb) {
      return _0x1b4247;
    } else {
      _0x1b4247(0);
    }
  } catch (_0x6dc78a) {}
}

经过前面的分析，我们直接从_0x1ef281(_0x2b9b78()入手：

console.log(_0x2b9b78())  // 时间戳

console.log(_0x1ef281(_0x2b9b78()));

改造如下：

function _0x1ef281(_0x26b6ca, _0x437f35) {
    // document["cookie"] = "m" + _0x49aa7c() + "=" + _0x5d6009(_0x26b6ca) + "|" + _0x26b6ca + "; path=/";
    // location["reload"]();
    return _0x5d6009(_0x26b6ca) + "|" + _0x26b6ca
}

function _0x2b9b78(_0x282a57, _0x3149ea) {
    return Date["parse"](new Date());
    // return 1717217468000;
}

然后其它反混淆后的代码先保持不变，执行。

结果发现程序陷入死循环，怪事。本着关联小的代码先屏蔽的原则。

删除疑似检测并自动 debugger 的函数$dbsm_0x5259fe及相关代码

删除格式化检测代码：

构造函数的调用、正则匹配、最后返回正则匹配的结果，再往下一看在紧挨着的一个自执行函数中判断匹配结果，结合匹配规则与作用对象一看，那可不就是判断一下这个对象的作用范围内的代码是否格式化了嘛，如果格式化了的话就一直递归调用下去，直到程序崩溃。所以分析到这里就很清晰了，我们只需要将该作用对象的代码压缩一下，也就是不要格式化了就可以了，硬气点就直接不要这段代码了。

删除 s 山代码：

至此，最终的 JS 代码如下：

var _0x32d8ff = function () {
    var _0x10da5a = true;
    return function (_0x12abdf, _0x1bf080) {
        var _0x3a9e2b = _0x10da5a ? function () {
            if (_0x1bf080) {
                var _0xb4da8 = _0x1bf080["apply"](_0x12abdf, arguments);

                _0x1bf080 = null;
                return _0xb4da8;
            }
        } : function () {
        };

        _0x10da5a = false;
        return _0x3a9e2b;
    };
}();

var _0x4cda73 = function () {
    var _0x4012fc = true;
    return function (_0x1d5729, _0x1524fb) {
        var _0x559fe4 = _0x4012fc ? function () {
            if (_0x1524fb) {
                var _0x341172 = _0x1524fb["apply"](_0x1d5729, arguments);

                _0x1524fb = null;
                return _0x341172;
            }
        } : function () {
        };

        _0x4012fc = false;
        return _0x559fe4;
    };
}();

function _0x78a97c(_0x5721d9, _0x20bb9d) {
    var _0x358b7d = (65535 & _0x5721d9) + (65535 & _0x20bb9d);

    return (_0x5721d9 >> 16) + (_0x20bb9d >> 16) + (_0x358b7d >> 16) << 16 | 65535 & _0x358b7d;
}

function _0x4005c0(_0x3babe8, _0x45dcea) {
    return _0x3babe8 << _0x45dcea | _0x3babe8 >>> 32 - _0x45dcea;
}

function _0x5f43ab(_0x448588, _0x521376, _0x43952f, _0xb364d5, _0x42214f, _0x4a31d5) {
    return _0x78a97c(_0x4005c0(_0x78a97c(_0x78a97c(_0x521376, _0x448588), _0x78a97c(_0xb364d5, _0x4a31d5)), _0x42214f), _0x43952f);
}

function _0x55b8d2(_0x41a8b6, _0x36bdd4, _0x3f2bb8, _0x1c8914, _0x4823f8, _0x1b9564, _0x4bf1c0) {
    return _0x5f43ab(_0x36bdd4 & _0x3f2bb8 | ~_0x36bdd4 & _0x1c8914, _0x41a8b6, _0x36bdd4, _0x4823f8, _0x1b9564, _0x4bf1c0);
}

function _0x130dc5(_0x1b44b4, _0x50326c, _0x5bbb51, _0x15068f, _0x4cda97, _0x4bac7d, _0x394e69) {
    return _0x5f43ab(_0x50326c & _0x15068f | _0x5bbb51 & ~_0x15068f, _0x1b44b4, _0x50326c, _0x4cda97, _0x4bac7d, _0x394e69);
}

function _0x1efbd5(_0x2a44b, _0x8e77a1) {
    let _0x53311f = [99, 111, 110, 115, 111, 108, 101];
    let _0x4d1db4 = "";

    for (let _0x5881ad = 0; _0x5881ad < _0x53311f["length"]; _0x5881ad++) {
        _0x4d1db4 += String["fromCharCode"](_0x53311f[_0x5881ad]);
    }

    return _0x4d1db4;
}

function _0x37d2d1(_0x36dfcd, _0x4de24f, _0x170b41, _0x517f77, _0x5e7a62, _0x4e1845, _0x44344a) {
    return _0x5f43ab(_0x4de24f ^ _0x170b41 ^ _0x517f77, _0x36dfcd, _0x4de24f, _0x5e7a62, _0x4e1845, _0x44344a);
}

function _0x5929b7(_0x4118e4, _0xd92f9c, _0x4eaacd, _0x3c4472, _0x599cb8, _0x2fde49, _0x4f83e1) {
    return _0x5f43ab(_0x4eaacd ^ (_0xd92f9c | ~_0x3c4472), _0x4118e4, _0xd92f9c, _0x599cb8, _0x2fde49, _0x4f83e1);
}

function _0x14cc53(_0x3d8252, _0x4c4ba5) {
    if (_0x4c4ba5) {
        return _0x5929b7(_0x3d8252);
    }

    return _0x1efbd5(_0x3d8252);
}

function _0x34b425(_0x3c4aa7, _0xaef50e) {
    let _0x59eb28 = "";

    for (let _0x1dd6f6 = 0; _0x1dd6f6 < _0x3c4aa7["length"]; _0x1dd6f6++) {
        _0x59eb28 += String["fromCharCode"](_0x3c4aa7[_0x1dd6f6]);
    }

    return _0x59eb28;
}

function _0x49aa7c(_0x4a9a17, _0x5e5f99) {
    _0x14cc53();

    qz = [10, 99, 111, 110, 115, 111, 108, 101, 32, 61, 32, 110, 101, 119, 32, 79, 98, 106, 101, 99, 116, 40, 41, 10, 99, 111, 110, 115, 111, 108, 101, 46, 108, 111, 103, 32, 61, 32, 102, 117, 110, 99, 116, 105, 111, 110, 32, 40, 115, 41, 32, 123, 10, 32, 32, 32, 32, 119, 104, 105, 108, 101, 32, 40, 49, 41, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 102, 111, 114, 40, 105, 61, 48, 59, 105, 60, 49, 49, 48, 48, 48, 48, 48, 59, 105, 43, 43, 41, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32, 104, 105, 115, 116, 111, 114, 121, 46, 112, 117, 115, 104, 83, 116, 97, 116, 101, 40, 48, 44, 48, 44, 105, 41, 10, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 125, 10, 32, 32, 32, 32, 125, 10, 10, 125, 10, 99, 111, 110, 115, 111, 108, 101, 46, 116, 111, 83, 116, 114, 105, 110, 103, 32, 61, 32, 39, 91, 111, 98, 106, 101, 99, 116, 32, 79, 98, 106, 101, 99, 116, 93, 39, 10, 99, 111, 110, 115, 111, 108, 101, 46, 108, 111, 103, 46, 116, 111, 83, 116, 114, 105, 110, 103, 32, 61, 32, 39, 402, 32, 116, 111, 83, 116, 114, 105, 110, 103, 40, 41, 32, 123, 32, 91, 110, 97, 116, 105, 118, 101, 32, 99, 111, 100, 101, 93, 32, 125, 39, 10];
    eval(_0x34b425(qz));
}

function _0x22f0b8(_0x28dd69, _0xb24519) {
    _0x28dd69[_0xb24519 >> 5] |= 128 << _0xb24519 % 32, _0x28dd69[14 + (_0xb24519 + 64 >>> 9 << 4)] = _0xb24519;

    if (qz) {
        var _0x4e039e,
            _0x19d32c,
            _0x3ddc0d,
            _0xef7e8f,
            _0x57b6a3,
            _0x37dc07 = 1732584193,
            _0x3eadc8 = -271733879,
            _0x310b2c = -1732584194,
            _0x298fef = 271733878;
    } else {
        var _0x4e039e,
            _0x19d32c,
            _0x3ddc0d,
            _0xef7e8f,
            _0x57b6a3,
            _0x37dc07 = 0,
            _0x3eadc8 = -0,
            _0x310b2c = -0,
            _0x298fef = 0;
    }

    for (_0x4e039e = 0; _0x4e039e < _0x28dd69["length"]; _0x4e039e += 16) _0x19d32c = _0x37dc07, _0x3ddc0d = _0x3eadc8, _0xef7e8f = _0x310b2c, _0x57b6a3 = _0x298fef, _0x37dc07 = _0x55b8d2(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e], 7, -680876936), _0x298fef = _0x55b8d2(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 1], 12, -389564586), _0x310b2c = _0x55b8d2(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 2], 17, 606105819), _0x3eadc8 = _0x55b8d2(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 3], 22, -1044525330), _0x37dc07 = _0x55b8d2(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 4], 7, -176418897), _0x298fef = _0x55b8d2(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 5], 12, 1200080426), _0x310b2c = _0x55b8d2(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 6], 17, -1473231341), _0x3eadc8 = _0x55b8d2(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 7], 22, -45705983), _0x37dc07 = _0x55b8d2(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 8], 7, 1770010416), _0x298fef = _0x55b8d2(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 9], 12, -1958414417), _0x310b2c = _0x55b8d2(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 10], 17, -42063), _0x3eadc8 = _0x55b8d2(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 11], 22, -1990404162), _0x37dc07 = _0x55b8d2(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 12], 7, 1804603682), _0x298fef = _0x55b8d2(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 13], 12, -40341101), _0x310b2c = _0x55b8d2(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 14], 17, -1502882290), _0x3eadc8 = _0x55b8d2(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 15], 22, 1236535329), _0x37dc07 = _0x130dc5(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 1], 5, -165796510), _0x298fef = _0x130dc5(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 6], 9, -1069501632), _0x310b2c = _0x130dc5(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 11], 14, 643717713), _0x3eadc8 = _0x130dc5(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e], 20, -373897302), _0x37dc07 = _0x130dc5(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 5], 5, -701558691), _0x298fef = _0x130dc5(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 10], 9, 38016083), _0x310b2c = _0x130dc5(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 15], 14, -660478335), _0x3eadc8 = _0x130dc5(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 4], 20, -405537848), _0x37dc07 = _0x130dc5(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 9], 5, 568446438), _0x298fef = _0x130dc5(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 14], 9, -1019803690), _0x310b2c = _0x130dc5(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 3], 14, -187363961), _0x3eadc8 = _0x130dc5(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 8], 20, 1163531501), _0x37dc07 = _0x130dc5(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 13], 5, -1444681467), _0x298fef = _0x130dc5(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 2], 9, -51403784), _0x310b2c = _0x130dc5(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 7], 14, 1735328473), _0x3eadc8 = _0x130dc5(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 12], 20, -1926607734), _0x37dc07 = _0x37d2d1(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 5], 4, -378558), _0x298fef = _0x37d2d1(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 8], 11, -2022574463), _0x310b2c = _0x37d2d1(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 11], 16, 1839030562), _0x3eadc8 = _0x37d2d1(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 14], 23, -35309556), _0x37dc07 = _0x37d2d1(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 1], 4, -1530992060), _0x298fef = _0x37d2d1(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 4], 11, 1272893353), _0x310b2c = _0x37d2d1(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 7], 16, -155497632), _0x3eadc8 = _0x37d2d1(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 10], 23, -1094730640), _0x37dc07 = _0x37d2d1(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 13], 4, 681279174), _0x298fef = _0x37d2d1(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e], 11, -358537222), _0x310b2c = _0x37d2d1(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 3], 16, -722521979), _0x3eadc8 = _0x37d2d1(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 6], 23, 76029189), _0x37dc07 = _0x37d2d1(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 9], 4, -640364487), _0x298fef = _0x37d2d1(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 12], 11, -421815835), _0x310b2c = _0x37d2d1(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 15], 16, 530742520), _0x3eadc8 = _0x37d2d1(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 2], 23, -995338651), _0x37dc07 = _0x5929b7(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e], 6, -198630844), _0x298fef = _0x5929b7(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 7], 10, 1126891415), _0x310b2c = _0x5929b7(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 14], 15, -1416354905), _0x3eadc8 = _0x5929b7(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 5], 21, -57434055), _0x37dc07 = _0x5929b7(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 12], 6, 1700485571), _0x298fef = _0x5929b7(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 3], 10, -1894986606), _0x310b2c = _0x5929b7(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 10], 15, -1051523), _0x3eadc8 = _0x5929b7(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 1], 21, -2054922799), _0x37dc07 = _0x5929b7(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 8], 6, 1873313359), _0x298fef = _0x5929b7(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 15], 10, -30611744), _0x310b2c = _0x5929b7(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 6], 15, -1560198380), _0x3eadc8 = _0x5929b7(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 13], 21, 1309151649), _0x37dc07 = _0x5929b7(_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef, _0x28dd69[_0x4e039e + 4], 6, -145523070), _0x298fef = _0x5929b7(_0x298fef, _0x37dc07, _0x3eadc8, _0x310b2c, _0x28dd69[_0x4e039e + 11], 10, -1120210379), _0x310b2c = _0x5929b7(_0x310b2c, _0x298fef, _0x37dc07, _0x3eadc8, _0x28dd69[_0x4e039e + 2], 15, 718787259), _0x3eadc8 = _0x5929b7(_0x3eadc8, _0x310b2c, _0x298fef, _0x37dc07, _0x28dd69[_0x4e039e + 9], 21, -343485441), _0x37dc07 = _0x78a97c(_0x37dc07, _0x19d32c), _0x3eadc8 = _0x78a97c(_0x3eadc8, _0x3ddc0d), _0x310b2c = _0x78a97c(_0x310b2c, _0xef7e8f), _0x298fef = _0x78a97c(_0x298fef, _0x57b6a3);

    return [_0x37dc07, _0x3eadc8, _0x310b2c, _0x298fef];
}

function _0x3bfd71(_0x5ab7c5) {
    var _0x36356b,
        _0x2c95a5 = "",
        _0x2e8561 = 32 * _0x5ab7c5["length"];

    for (_0x36356b = 0; _0x36356b < _0x2e8561; _0x36356b += 8) _0x2c95a5 += String["fromCharCode"](_0x5ab7c5[_0x36356b >> 5] >>> _0x36356b % 32 & 255);

    return _0x2c95a5;
}

function _0xf2e848(_0xfba4ed) {
    var _0x49dcd9,
        _0x2daf2c = [];

    for (_0x2daf2c[(_0xfba4ed["length"] >> 2) - 1] = undefined, _0x49dcd9 = 0; _0x49dcd9 < _0x2daf2c["length"]; _0x49dcd9 += 1) _0x2daf2c[_0x49dcd9] = 0;

    var _0x24d40f = 8 * _0xfba4ed["length"];

    for (_0x49dcd9 = 0; _0x49dcd9 < _0x24d40f; _0x49dcd9 += 8) _0x2daf2c[_0x49dcd9 >> 5] |= (255 & _0xfba4ed["charCodeAt"](_0x49dcd9 / 8)) << _0x49dcd9 % 32;

    return _0x2daf2c;
}

function _0x34478e(_0x549cc3) {
    return _0x3bfd71(_0x22f0b8(_0xf2e848(_0x549cc3), 8 * _0x549cc3["length"]));
}

function _0x4bbf0d(_0x822ccd) {
    var _0x45b901,
        _0x1553e1,
        _0x2a13cb = "0123456789abcdef",
        _0x185b55 = "";

    for (_0x1553e1 = 0; _0x1553e1 < _0x822ccd["length"]; _0x1553e1 += 1) _0x45b901 = _0x822ccd["charCodeAt"](_0x1553e1), _0x185b55 += _0x2a13cb["charAt"](_0x45b901 >>> 4 & 15) + _0x2a13cb["charAt"](15 & _0x45b901);

    return _0x185b55;
}

function _0x241213(_0x3261ba) {
    return unescape(encodeURIComponent(_0x3261ba));
}

function _0x5a0917(_0x2a8050) {
    return _0x34478e(_0x241213(_0x2a8050));
}

function _0x225d0b(_0x1bd105) {
    return _0x4bbf0d(_0x5a0917(_0x1bd105));
}

function _0x5d6009(_0x39361b, _0x573712, _0xe7cd7f) {
    _0x49aa7c();

    return _0x573712 ? _0xe7cd7f ? _0x1efbd5(_0x573712, _0x39361b) : y(_0x573712, _0x39361b) : _0xe7cd7f ? _0x5a0917(_0x39361b) : _0x225d0b(_0x39361b);
}

function _0x1ef281(_0x26b6ca, _0x437f35) {
    return _0x5d6009(_0x26b6ca) + "|" + _0x26b6ca
}

function _0x2b9b78(_0x282a57, _0x3149ea) {
    return Date["parse"](new Date());
    // return 1717217468000;
}


console.log(_0x2b9b78())  // 时间戳

console.log(_0x1ef281(_0x2b9b78()));

使用 Python 获取接口详细信息：

#!usr/bin/env python
# -*- coding:utf-8 -*-
import requests
import time
import execjs
import urllib3

urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)


class YuanRenXueSpider:
    def __init__(self):
        self.base_url = 'https://match.yuanrenxue.com/api/match/2'
        self.headers = {
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.10 Safari/537.36',
        }
        self.cookies = {
            'tk': '-5621756640779912732',
            # 'sessionid': 'qdlnifuic3h3iygdq3rcaoxpyrdo9c82',
            'no-alert3': 'true',
            'm': '3d3639f9eb1db367d6019b3ec415552e|1717231708000',
        }
        self.ticket_lists = []

    @staticmethod
    def get_time() -> int:
        now = int(time.time()) * 1000
        print(now)
        return now

    @staticmethod
    def get_m(timestamp: int) -> str:
        try:
            with open('最终.js', 'r', encoding='utf-8') as js_file:
                js_txt = js_file.read()
            js_compile = execjs.compile(js_txt)
            m = js_compile.call('get_m', str(timestamp))
            print(m)
            return m
        except FileNotFoundError:
            print("JavaScript file not found.")
            raise
        except Exception as e:
            print(f"An error occurred while executing JavaScript: {e}")
            raise

    def fetch_data(self, m: str, page: int) -> None:
        url = f'{self.base_url}?page={page}'
        print(url)
        self.cookies['m'] = m
        try:
            response = requests.get(url, headers=self.headers, cookies=self.cookies, verify=False)
            response.raise_for_status()
            res = response.json()
            for item in res['data']:
                data = item['value']
                self.ticket_lists.append(data)
        except requests.RequestException as e:
            print(f"Request error: {e}")
        except ValueError:
            print("Error parsing response JSON.")
        except KeyError:
            print("Unexpected response format.")

    def run(self) -> None:
        timestamp = self.get_time()
        cookie_m = self.get_m(timestamp)
        for i in range(1, 6):
            self.fetch_data(cookie_m, i)
        print(self.ticket_lists)
        total = sum(self.ticket_lists)
        print('热度的总值为：', total)


if __name__ == '__main__':
    spider = YuanRenXueSpider()
    spider.run()

小结

JS 逆向 cookie 反爬是一种技术手段，用于破解网站通过校验请求头中的 Cookie 值来区分正常用户和爬虫程序的方法。

特征提示：Cookie 加密通常需要对服务器进行多次请求才能获取数据。有两种情况：一是服务器直接返回 cookie 值（通过响应头中的Set-Cookie）；二是首次请求时返回JS文件，浏览器通过 JS 算法生成 cookie 值，然后携带该值进行后续请求。
加密原理：JS 逆向分析中，需要理解 cookie 加密的原理，这通常涉及到对 JS 文件的分析和逆向工程。
动态cookie：有些网站使用动态生成的 cookie，这需要通过分析返回的JS文件来找出 cookie 参数。可能需要将 JS 代码复制到本地环境，格式化并分析以提取生成 cookie 的逻辑。

总结来说，JS 逆向 cookie 反爬是一个复杂的过程，涉及到对网站请求、响应、JS 文件的分析和逆向工程。需要具备一定的技术知识和经验来成功实施。

原文链接：https://juejin.cn/post/7376080488349401107

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