猿人学web端爬虫攻防大赛赛题第1题——js 混淆 - 源码乱码
题目网址：https://match.yuanrenxue.cn/match/1
解题步骤
- 点击页面，看触发的流量包。
- 只有一条，非常好确定，但是url中
m参数的值看着比较奇怪，是一串加密的字符串加上“|”加上看着像是时间戳的东西。
- 去找其加密的逻辑。直接搜url中的关键词，但是没有结果。
- 如果要搜变量名
m的话就不明智了，肯定会搜出很多符合条件的。所以这里就换种思路，查看流量包的Initiator模块。
Initiator相当于一个调用栈，越靠下的函数是越早调用的，这里可以看到有个request函数，点进去看一下。
- 看起来像是一串乱码，这是经过代码混淆的，比较难看，需要将其还原。里面就涉及到两个知识点，一个是16进制，一个是unicode码，可以通过编写python代码来进行还原。
运行得到的结果如下。file = open("1.txt") # 1.txt中的内容就是乱码 res_str = "" string = file.read() flag = False index = 0 temp = "" while index < len(string): if string[index] != "\\": res_str += string[index] index += 1 else: # 碰到了反斜杠，说明后面要么是十六进制要么是unicode if string[index + 1] == "x": # 如果是十六进制 res_str += bytes.fromhex(string[index + 2:index + 4]).decode("utf-8") index += 4 elif string[index + 1] == "u": # 如果是unicode编码 res_str += string[index:index + 6].encode("utf-8").decode("unicode_escape") index += 6 print(res_str)window['url'] = '/api/' + 'match' + '/1', request = function() { var _0x2268f9 = Date['parse'](new Date()) + (16798545 + -72936737 + 156138192) , _0x57feae = oo0O0(_0x2268f9['toStr' + 'ing']()) + window['f']; const _0x5d83a3 = {}; _0x5d83a3['page'] = window['page'], _0x5d83a3['m'] = _0x57feae + '丨' + _0x2268f9 / (-1 * 3483 + -9059 + 13542); var _0xb89747 = _0x5d83a3; $['ajax']({ 'url': window['url'], 'dataType': 'json', 'async': ![], 'data': _0xb89747, 'type': 'GET', 'beforeSend': function(_0x4c488e) {}, 'success': function(_0x131e59) { _0x131e59 = _0x131e59['data']; let _0x354583 = '' , _0x1b89ba = '<div ' + 'class' + '="b-a' + 'irfly' + '"><di' + 'v cla' + 'ss="e' + '-airf' + 'ly"da' + 'ta-re' + 'actid' + '=".1.' + '3.3.2' + '.0.$K' + 'N5911' + '.0"><' + 'div c' + 'lass=' + '"col-' + 'trip"' + 'data-' + 'react' + 'id=".' + '1.3.3' + '.2.0.' + '$KN59' + '11.0.' + '0"><d' + 'iv cl' + 'ass="' + 's-tri' + 'p"dat' + 'a-rea' + 'ctid=' + '".1.3' + '.3.2.' + '0.$KN' + '5911.' + '0.0.0' + '"><di' + 'v cla' + 'ss="c' + 'ol-ai' + 'rline' + '"data' + '-reac' + 'tid="' + '.1.3.' + '3.2.0' + '.$KN5' + '911.0' + '.0.0.' + '0"><d' + 'iv cl' + 'ass="' + 'd-air' + '"data' + '-reac' + 'tid="' + '.1.3.' + '3.2.0' + '.$KN5' + '911.0' + '.0.0.' + '0.0:$' + '0"><d' + 'iv cl' + 'ass="' + 'air"d' + 'ata-r' + 'eacti' + 'd=".1' + '.3.3.' + '2.0.$' + 'KN591' + '1.0.0' + '.0.0.' + '0:$0.' + '0"><s' + 'pan d' + 'ata-r' + 'eacti' + 'd=".1' + '.3.3.' + '2.0.$' + 'KN591' + '1.0.0' + '.0.0.' + '0:$0.' + '0.1">' + '中国联合航' + '空</sp' + 'an></' + 'div><' + 'div c' + 'lass=' + '"num"' + 'data-' + 'react' + 'id=".' + '1.3.3' + '.2.0.' + '$KN59' + '11.0.' + '0.0.0' + '.0:$0' + '.1"><' + 'span ' + 'class' + '="n"d' + 'ata-r' + 'eacti' + 'd=".1' + '.3.3.' + '2.0.$' + 'KN591' + '1.0.0' + '.0.0.' + '0:$0.' + '1.0">' + 'KN591' + '1</sp' + 'an><s' + 'pan c' + 'lass=' + '"n"da' + 'ta-re' + 'actid' + '=".1.' + '3.3.2' + '.0.$K' + 'N5911' + '.0.0.' + '0.0.0' + ':$0.1' + '.1">波' + '音737(' + '中)</s' + 'pan><' + 'noscr' + 'ipt d' + 'ata-r' + 'eacti' + 'd=".1' + '.3.3.' + '2.0.$' + 'KN591' + '1.0.0' + '.0.0.' + '0:$0.' + '1.2">' + '</nos' + 'cript' + '></di' + 'v></d' + 'iv><n' + 'oscri' + 'pt da' + 'ta-re' + 'actid' + '=".1.' + '3.3.2' + '.0.$K' + 'N5911' + '.0.0.' + '0.0.1' + '"></n' + 'oscri' + 'pt></' + 'div><' + 'div c' + 'lass=' + '"col-' + 'time"' + 'data-' + 'react' + 'id=".' + '1.3.3' + '.2.0.' + '$KN59' + '11.0.' + '0.0.1' + '"><di' + 'v cla' + 'ss="s' + 'ep-lf' + '"data' + '-reac' + 'tid="' + '.1.3.' + '3.2.0' + '.$KN5' + '911.0' + '.0.0.' + '1.0">' + '<h2 d' + 'ata-r' + 'eacti' + 'd=".1' + '.3.3.' + ('2.0.$' + 'KN591' + '1.0.0' + '.0.1.' + '0.0">' + '13:50' + '</h2>' + '<p cl' + 'ass="' + 'airpo' + 'rt"da' + 'ta-re' + 'actid' + '=".1.' + '3.3.2' + '.0.$K' + 'N5911' + '.0.0.' + '0.1.0' + '.1"><' + 'span ' + 'data-' + 'react' + 'id=".' + '1.3.3' + '.2.0.' + '$KN59' + '11.0.' + '0.0.1' + '.0.1.' + '0">大兴' + '国际机场<' + '/span' + '><spa' + 'n dat' + 'a-rea' + 'ctid=' + '".1.3' + '.3.2.' + '0.$KN' + '5911.' + '0.0.0' + '.1.0.' + '1.1">' + '</spa' + 'n></p' + '></di' + 'v><di' + 'v cla' + 'ss="s' + 'ep-ct' + '"data' + '-reac' + 'tid="' + '.1.3.' + '3.2.0' + '.$KN5' + '911.0' + '.0.0.' + '1.1">' + '<div ' + 'class' + '="ran' + 'ge"da' + 'ta-re' + 'actid' + '=".1.' + '3.3.2' + '.0.$K' + 'N5911' + '.0.0.' + '0.1.1' + '.0">3' + '小时40分' + '钟</di' + 'v><di' + 'v cla' + 'ss="l' + 'ine"d' + 'ata-r' + 'eacti' + 'd=".1' + '.3.3.' + '2.0.$' + 'KN591' + '1.0.0' + '.0.1.' + '1.1">' + '</div' + '></di' + 'v><di' + 'v cla' + 'ss="s' + 'ep-rt' + '"data' + '-reac' + 'tid="' + '.1.3.' + '3.2.0' + '.$KN5' + '911.0' + '.0.0.' + '1.2">' + '<nosc' + 'ript ' + 'data-' + 'react' + 'id=".' + '1.3.3' + '.2.0.' + '$KN59' + '11.0.' + '0.0.1' + '.2.0"' + '></no' + 'scrip' + 't><h2' + ' data' + '-reac' + 'tid="' + '.1.3.' + '3.2.0' + '.$KN5' + '911.0' + '.0.0.' + '1.2.1' + '">17:' + '30</h' + '2><p ' + 'class' + '="air' + 'port"' + 'data-' + 'react' + 'id=".' + '1.3.3' + '.2.0.' + '$KN59' + '11.0.' + '0.0.1' + '.2.2"' + '><spa' + 'n dat' + 'a-rea' + 'ctid=' + '".1.3' + '.3.2.' + '0.$KN' + '5911.' + '0.0.0' + '.1.2.' + '2.0">' + '宝安机场<' + '/span' + '></p>' + '</div' + '><nos' + 'cript' + ' data' + '-reac' + 'tid="' + '.1.3.' + '3.2.0' + '.$KN5' + '911.0' + '.0.0.' + '1.3">' + '</nos' + 'cript' + '></di' + 'v></d' + 'iv></' + 'div><' + 'div c' + 'lass=' + '"col-' + 'price' + '"data' + '-reac' + 'tid="' + '.1.3.' + '3.2.0' + '.$KN5' + '911.0' + '.1"><' + 'p cla' + 'ss="p' + 'rc"da' + 'ta-re' + 'actid' + '=".1.' + '3.3.2' + '.0.$K' + 'N5911' + '.0.1.' + '0"><s' + 'pan d' + 'ata-r' + 'eacti' + 'd=".1') + ('.3.3.' + '2.0.$' + 'KN591' + '1.0.1' + '.0.0"' + '><i c' + 'lass=' + '"rmb"' + 'data-' + 'react' + 'id=".' + '1.3.3' + '.2.0.' + '$KN59' + '11.0.' + '1.0.0' + '.0">&' + 'yen;<' + '/i><s' + 'pan c' + 'lass=' + '"fix_' + 'price' + '"data' + '-reac' + 'tid="' + '.1.3.' + '3.2.0' + '.$KN5' + '911.0' + '.1.0.' + '0.1">' + '<span' + ' clas' + 's="pr' + 'c_wp"' + 'style' + '="wid' + 'th:48' + 'px">p' + 'rice_' + 'sole<' + '/span' + '></sp' + 'an></' + 'span>' + '</p><' + 'div c' + 'lass=' + '"vim"' + 'data-' + 'react' + 'id=".' + '1.3.3' + '.2.0.' + '$KN59' + '11.0.' + '1.1">' + '<span' + ' clas' + 's="v ' + 'dis"d' + 'ata-r' + 'eacti' + 'd=".1' + '.3.3.' + '2.0.$' + 'KN591' + '1.0.1' + '.1.$0' + '"></s' + 'pan><' + '/div>' + '</div' + '><div' + ' clas' + 's="co' + 'l-fol' + 'd"dat' + 'a-rea' + 'ctid=' + '".1.3' + '.3.2.' + '0.$KN' + '5911.' + '0.2">' + '<p cl' + 'ass="' + 'fd"da' + 'ta-re' + 'actid' + '=".1.' + '3.3.2' + '.0.$K' + 'N5911' + '.0.2.' + '0">收起' + '</p><' + '/div>' + '</div' + '><nos' + 'cript' + ' data' + '-reac' + 'tid="' + '.1.3.' + '3.2.0' + '.$KN5' + '911.1' + '"></n' + 'oscri' + 'pt></' + 'div>') , _0x548377 = ['中国南方航' + '空', '吉祥航空', '奥凯航空', '九元航空', '长龙航空', '东方航空', '中国国际航' + '空', '深圳航空', '海南航空', '春秋航空', '上海航空', '西部航空', '重庆航空', '西藏航空', '中国联合航' + '空', '云南祥鹏航' + '空', '云南英安航' + '空', '厦门航空', '天津航空', '山东航空', '四川航空', '华夏航空', '长城航空', '成都航空有', '北京首都航' + '空', '中华航空', '意大利国家' + '航空公司', '印度百捷航' + '空', '越南航空', '远东航空', '印度航空公' + '司', '印度捷特航' + '空有限公司', '以色列航空' + '公司', '意大利航空', '伊朗航空公' + '司', '印度尼西亚' + '鹰航空公司', '英国航空公' + '司', '西方天空航' + '空', '西捷航空', '西班牙欧洲' + '航空公司', '西班牙航空' + '公司', '中国南方航' + '空', '吉祥航空', '奥凯航空', '九元航空', '长龙航空', '东方航空', '中国国际航' + '空', '深圳航空', '海南航空', '春秋航空', '上海航空', '西部航空', '重庆航空', '西藏航空', '中国联合航' + '空', '云南祥鹏航' + '空', '云南英安航' + '空', '厦门航空', '天津航空', '山东航空', '四川航空', '华夏航空', '长城航空', '成都航空有', '北京首都航' + '空', '中华航空', '意大利国家' + '航空公司', '印度百捷航' + '空', '越南航空', '远东航空', '印度航空公' + '司', '印度捷特航' + '空有限公司', '以色列航空' + '公司', '意大利航空', '伊朗航空公' + '司', '印度尼西亚' + '鹰航空公司', '英国航空公' + '司', '西方天空航' + '空', '西捷航空', '西班牙欧洲' + '航空公司', '西班牙航空' + '公司'] , _0x5286d2 = 22 * 251 + -1721 + -3800 , _0xa24ff9 = ['北京首都国' + '际机场', '上海虹桥国' + '际机场', '上海浦东国' + '际机场', '天津滨海国' + '际机场', '太原武宿机' + '场', '呼和浩特白' + '塔机场', '沈阳桃仙国' + '际机场', '大连周水子' + '国际机场', '长春大房身' + '机场', '哈尔滨阎家' + '岗国际机场', '齐齐哈尔三' + '家子机场', '佳木斯东郊' + '机场', '厦门高崎国' + '际机场', '福州长乐国' + '际机场', '杭州萧山国' + '际机场', '合肥骆岗机' + '场', '宁波栎社机' + '场', '南京禄口国' + '际机场', '广州白云国' + '际机场', '深圳宝安国' + '际机场', '长沙黄花机' + '场', '海口美亚机' + '场', '武汉天河机' + '场', '济南遥墙机' + '场', '青岛流亭机' + '场', '南宁吴墟机' + '场', '三亚凤凰国' + '际机场', '重庆江北国' + '际机场', '成都双流国' + '际机场', '昆明巫家坝' + '国际机场', '昆明长水国' + '际机场', '桂林两江国' + '际机场', '西安咸阳国' + '际机场', '兰州中川机' + '场', '贵阳龙洞堡' + '机场', '拉萨贡嘎机' + '场', '乌鲁木齐地' + '窝堡机场', '南昌向塘机' + '场', '郑州新郑机' + '场', '北京首都国' + '际机场', '上海虹桥国' + '际机场', '上海浦东国' + '际机场', '天津滨海国' + '际机场', '太原武宿机' + '场', '呼和浩特白' + '塔机场', '沈阳桃仙国' + '际机场', '大连周水子' + '国际机场', '长春大房身' + '机场', '哈尔滨阎家' + '岗国际机场', '齐齐哈尔三' + '家子机场', '佳木斯东郊' + '机场', '厦门高崎国' + '际机场', '福州长乐国' + '际机场', '杭州萧山国' + '际机场', '合肥骆岗机' + '场', '宁波栎社机' + '场', '南京禄口国' + '际机场', '广州白云国' + '际机场', '深圳宝安国' + '际机场', '长沙黄花机' + '场', '海口美亚机' + '场', '武汉天河机' + '场', '济南遥墙机' + '场', '青岛流亭机' + '场', '南宁吴墟机' + '场', '三亚凤凰国' + '际机场', '重庆江北国' + '际机场', '成都双流国' + '际机场', '昆明巫家坝' + '国际机场', '昆明长水国' + '际机场', '桂林两江国' + '际机场', '西安咸阳国' + '际机场', '兰州中川机' + '场', '贵阳龙洞堡' + '机场', '拉萨贡嘎机' + '场', '乌鲁木齐地' + '窝堡机场', '南昌向塘机' + '场', '郑州新郑机' + '场']; if (window['page']) {} else window['page'] = 2333 * 3 + 458 * -5 + -4708; $['each'](_0x131e59, function(_0x282f1d, _0x4e0853) { _0x354583 += _0x1b89ba['repla' + 'ce']('price' + '_sole', _0x4e0853['value'])['repla' + 'ce']('中国联合航' + '空', _0x548377[_0x5286d2 * window['page']])['repla' + 'ce']('大兴国际', _0xa24ff9[parseInt(_0x5286d2 * window['page'] / (659 + 785 * -7 + 4838)) + (5666 * 1 + 2 * -4161 + 2657)])['repla' + 'ce']('宝安机场', _0xa24ff9[_0xa24ff9['lengt' + 'h'] - parseInt(_0x5286d2 * window['page'] / (8357 + -323 * 1 + -8032)) - (350 + -9 * 295 + 2306)]), _0x5286d2 += -156 * -53 + -78 * -111 + -16925; }), $('.m-ai' + 'rfly-' + 'lst')['text']('')['appen' + 'd'](_0x354583); }, 'complete': function() {}, 'error': function() { alert('数据拉取失' + '败。可能是' + '触发了风控' + '系统，若您' + '是正常访问' + '，请使用谷' + '歌浏览器无' + '痕模式，并' + '且校准电脑' + '的系统时间' + '重新尝试'), alert('生而为虫，' + '我很抱歉，' + '请刷新页面' + '，查看问题' + '是否存在'), $('.page' + '-mess' + 'age')['eq'](17 * -94 + 1014 + -4 * -146)['addCl' + 'ass']('activ' + 'e'), $('.page' + '-mess' + 'age')['remov' + 'eClas' + 's']('activ' + 'e'); } }); } - 重点关注
_0x5d83a3['m'] = _0x57feae + '丨' + _0x2268f9 / (-1 * 3483 + -9059 + 13542);这行代码，其余m参数的生成有关，涉及到_0x57feae和_0x2268f9两个变量。
_0x2268f9：var _0x2268f9 = Date['parse'](new Date()) + (16798545 + -72936737 + 156138192)就是对时间戳做了个加减法，还是比较好理解的，看下它的输出结果。（等下这个地方在写python代码需要注意一下）
_0x57feae：_0x57feae = oo0O0(_0x2268f9['toStr' + 'ing']()) + window['f']：将_0x2268f9的结果经oo0O0函数处理再拼接上window['f']。 - 看下
oo0O0函数是什么。
- 将代码复制到一个js文件中，运行测试一下，报错
window未定义。
如果要去补代码的话比较麻烦，我们就采取在页面中打断点一步一步调试，看跟window相关的变量值是什么，直接进行替换。例如，window.a.length的值是6612，直接在代码中替换即可。
替换后的代码如下。let a = "\"isMRQsxrU]xtDhMbZJrrdvxPiiuypx] qz}® g°¤¯©¡tª¥¯º§¯·£¢³²¯¥ 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ᙣᙧᙉᙫᙍᙯᙚᙚᙍᙈᙧᘸᙙᙴᙚᙢᙜᙻᙦᙷᙈᙺᙲᙚᙝᚎᙺᙿᚂᚅᙲ᙭ᚆᙔ᙭ᙡᚇᚉᙫᙶᙰᙰᙾᙘᚡᚃᚂᙽᙝᚐ᚛ᙣᚗᚊᙥᙤᚡᚙᚍᙬᚢᚁᚧᚲᚧᚁᚩᚢᚙᙸᚷᚒᚴᚕᙸᚬᚳᚳᚶᚘᚦᛃᚂᚪᚪ᚜ᚻᚯᚚᚇᛁᚢᛄᛏᚎᚶᚶᚨᛇᚺᚶᚓᛓᚲᚺᛞᚠᛂ᚜ᛓᛥᛐᚡᛞᛠᚽᛆᚸᚫᛏᛣᚰᛱᛄᛂᛕᛤᛠᛧᛁᛩᛑᛖᛄᚻᛞᛰᛲᛕᛷᜃᛸᛯᛳᛀᛲᛕᜂᜎᛢᜀᜋᜁᛤ᜔ᛌᜆᛦᛩᜆᜋᜏᛛᛩᛡᛝᜥᜎᜅᛤᜟᜍᜭᛨᛨᜁᜁ᜵ᜎᛰᛸᜫ᜕ᜪᜳᛷᜱ᜴ᜥᜢᜃᜡᜟᜪᜤᝑᜤᜭᝆᝉ᜶ᜱᝋᝄᝏ᜔ᝉᜱᜲᜱᜥᝇᝅᝥᝊᜥᝅᝤᜨᜫᝒᝧᝧᝂᝉᝯᝪᝳᝳᝑចᝉᝲᝩᝈᝮᝈធᝳᝮᝓចᝪᝢᝤយᝮវᝳថដᝯខឃលᝪហឰឆឤឈᝬឋធមᝳថឆឯឬឞឳផឳឣឡឤ឵វខឩី឴ុផឿឥឩហេឨឌ឵្ៀះះធឺឺឬ់ើឺភីវឰឤំ៧ឤ៣់៉ឨ២៙ួ៩ះើ៤ៈ៷៲៰៦឴។៶៕៝័២ូ៳៴៰៹៕ៀៜ៕ៈៜៃ៩᠄៥᠀᠈៓᠏៩៨᠐៳៩᠒᠙៸ៜ៸᠁᠆᠈ᠤ᠀៨᠀ᠭ᠒ᠣᠤᠠᠩ᠅៰᠌᠅ᠫᠮ៸᠌៳᠙ᠴ᠕ᠰᠸ᠃ᠿ᠙᠘ᡀᠣ᠙ᡂᡉᠨᡆᡌᠧᡈᠤ᠑ᠬᠺ᠔ᡝᠿᠾᠹ᠙ᡌᡗᡓᡇᠶᠠᡝᡕᡉᠨᡞᡙᠽᡣᡮᡛᡣᠽᡥᡞᡕᠴᡳᡎᡯᡌᠶᡓᡉᡯᡳᡔᡢᠾᡦᡦᡘᡷᡪᢌᡃᡦᡫᡡᡜᡫᡟᡱᡣᡯᡎᢇᡪᡴᢍᢗᡱᡜᡸᡰᡱᢂᡟᢁᢆᢇᢞᢗᢍᢌᢌᢧᢠᢒᢧᢉᢧᢗᢕᢙᢢᢉᢵᢦᡸᢿᢼᢷᢄᣃᢰᢦᢙᣊᢵᢚᢩᢆᢹᢉᢿᢍᢾᣄᢜᣔᢪᣈᢐᢶᢼᢗᢴᢪᣒᣚᢵᣣᢴᢣᣑᣛᢵᣩᢺᢹᣌᢾᣟᣀᣓᣧᢴᣵᣈᣆᣙᣨᣤᣫᣅᣭᣕᣚᣈᢿᣢᣴᤃᣙᤇᣳᣄᣙᤆᣈᣨᣌᣤᤎᣭᣲᣬᤐᤆᣕᤌᤈᤏᣩᤔᤒᤛᣵᤁᤒᤊᤜᣧᣟᤂᤢᣧᣣᤉᤤᤢᤈᤅᤈᤏᤅᤴᤏᤰᤐᤗᤝᤶᤄᤝᤒᤔᤂᤜᤪ᥊ᤠᤙᤰᤌᤤ᥎ᤪᤲᤓᤋ᥎ᤓᤏᤵᥐ᥎ᥙᤴᥓᥕᤸᥨᤴᥠ᤻᥆᥄ᥤ᥀᥉ᥐᥱ᥇᥎ᥐᥬ᥍ᤴ᥌ᥚᥳᥐ᥍ᥙᥪᥢᥳᦅᥝᦉᥩᥦ᥇ᥤᥙᦆᦇᥤᥡᥤᦎᥪᦇᦊᦌᥥᦎᦔᦐᥰᥙᦖᥣᦇᦛᥨᦩᦍᦜᦘᦟᦠᦉᦎᥳᦖᦒᦶᥰᦐᥴᦈᦶᦐᦿᦳᦪᦡᦤᦻᦦᦷᦾᦄᦜᦄᦘᧅᦣᧀᦌᧃᦥᧇ᧓ᧈᦿᧃᦐᧂᦥ᧒᧞ᦲ᧓ᦟᧃ᧓᧞ᦥᧆ᧘ᧈᦠ᧔ᦹᦹ᧟᧫᧑ᦳ᧗᧧᧲ᦹ᧚᧻ᦸ᧮᧦ᨁ᧚᧢᧻᧘᧕᧤ᦻ᧡᧼᧬ᨅ᧠᧚᧤ᨌ᧲᧭ᨆᨌ᧧ᨈ᧸ᨚ᧬᧺᧔ᨋ᧾᧱ᨔᨍ᧲ᨁᨥᨏᨗ᧱ᨗᨆᨧ᧧ᨖᨍ᧬ᨣᨛ᧭᨞ᨱᨗᨧᨀ᧹ᨊᨉᨫᨰᨪᨌᨀᨼᨣᨎᨠᨻᨯᨦᨳᩈᨴᨪᨕᩋᨺᨿᩂᨕ\""; function oo0O0(mw) { let b = ''; for (var i = 0, len = 6612; i < len; i++) { console.log(a[i]); b += String["fromC" + "harCode"](a[i]["charCo" + "deAt"]() - i - 5) } var U = ['W5r5W6VdIHZcT8kU', 'WQ8CWRaxWQirAW==']; var J = function (o, E) { o = o - 0x0; var N = U[o]; if (J['bSSGte'] === undefined) { var Y = function (w) { var m = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+/=' , T = String(w)['replace'](/=+$/, ''); var A = ''; for (var C = 0x0, b, W, l = 0x0; W = T['charAt'](l++); ~W && (b = C % 0x4 ? b * 0x40 + W : W, C++ % 0x4) ? A += String['fromCharCode'](0xff & b >> (-0x2 * C & 0x6)) : 0x0) { W = m['indexOf'](W) } return A }; var t = function (w, m) { var T = [], A = 0x0, C, b = '', W = ''; w = Y(w); for (var R = 0x0, v = w['length']; R < v; R++) { W += '%' + ('00' + w['charCodeAt'](R)['toString'](0x10))['slice'](-0x2) } w = decodeURIComponent(W); var l; for (l = 0x0; l < 0x100; l++) { T[l] = l } for (l = 0x0; l < 0x100; l++) { A = (A + T[l] + m['charCodeAt'](l % m['length'])) % 0x100, C = T[l], T[l] = T[A], T[A] = C } l = 0x0, A = 0x0; for (var L = 0x0; L < w['length']; L++) { l = (l + 0x1) % 0x100, A = (A + T[l]) % 0x100, C = T[l], T[l] = T[A], T[A] = C, b += String['fromCharCode'](w['charCodeAt'](L) ^ T[(T[l] + T[A]) % 0x100]) } return b }; J['luAabU'] = t, J['qlVPZg'] = {}, J['bSSGte'] = !![] } var H = J['qlVPZg'][o]; return H === undefined ? (J['TUDBIJ'] === undefined && (J['TUDBIJ'] = !![]), N = J['luAabU'](N, E), J['qlVPZg'][o] = N) : N = H, N }; eval(atob("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")[J('0x0', ']dQW')](J('0x1', 'GTu!'), '\x27' + mw + '\x27')); return '' } let mw = 1730475147000; oo0O0(mw);
运行发现还是报错，还是提示window未定义。
可是window已经被替换完了，到底是哪里出了问题？根据报错位置定位，发现是eval语句的问题。
那我们把eval中的语句输出看下是什么，将eval替换成console.log，内容如下。
var hexcase = 0;
var b64pad = "";
var chrsz = 16;
function hex_md5(a) {
return binl2hex(core_md5(str2binl(a), a.length * chrsz))
}
function b64_md5(a) {
return binl2b64(core_md5(str2binl(a), a.length * chrsz))
}
function str_md5(a) {
return binl2str(core_md5(str2binl(a), a.length * chrsz))
}
function hex_hmac_md5(a, b) {
return binl2hex(core_hmac_md5(a, b))
}
function b64_hmac_md5(a, b) {
return binl2b64(core_hmac_md5(a, b))
}
function str_hmac_md5(a, b) {
return binl2str(core_hmac_md5(a, b))
}
function md5_vm_test() {
return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72"
}
function core_md5(p, k) {
p[k >> 5] |= 128 << ((k) % 32);
p[(((k + 64) >>> 9) << 4) + 14] = k;
var o = 1732584193;
var n = -271733879;
var m = -1732584194;
var l = 271733878;
for (var g = 0; g < p.length; g += 16) {
var j = o;
var h = n;
var f = m;
var e = l;
o = md5_ff(o, n, m, l, p[g + 0], 7, -680976936);
l = md5_ff(l, o, n, m, p[g + 1], 12, -389564586);
m = md5_ff(m, l, o, n, p[g + 2], 17, 606105819);
n = md5_ff(n, m, l, o, p[g + 3], 22, -1044525330);
o = md5_ff(o, n, m, l, p[g + 4], 7, -176418897);
l = md5_ff(l, o, n, m, p[g + 5], 12, 1200080426);
m = md5_ff(m, l, o, n, p[g + 6], 17, -1473231341);
n = md5_ff(n, m, l, o, p[g + 7], 22, -45705983);
o = md5_ff(o, n, m, l, p[g + 8], 7, 1770035416);
l = md5_ff(l, o, n, m, p[g + 9], 12, -1958414417);
m = md5_ff(m, l, o, n, p[g + 10], 17, -42063);
n = md5_ff(n, m, l, o, p[g + 11], 22, -1990404162);
o = md5_ff(o, n, m, l, p[g + 12], 7, 1804660682);
l = md5_ff(l, o, n, m, p[g + 13], 12, -40341101);
m = md5_ff(m, l, o, n, p[g + 14], 17, -1502002290);
n = md5_ff(n, m, l, o, p[g + 15], 22, 1236535329);
o = md5_gg(o, n, m, l, p[g + 1], 5, -165796510);
l = md5_gg(l, o, n, m, p[g + 6], 9, -1069501632);
m = md5_gg(m, l, o, n, p[g + 11], 14, 643717713);
n = md5_gg(n, m, l, o, p[g + 0], 20, -373897302);
o = md5_gg(o, n, m, l, p[g + 5], 5, -701558691);
l = md5_gg(l, o, n, m, p[g + 10], 9, 38016083);
m = md5_gg(m, l, o, n, p[g + 15], 14, -660478335);
n = md5_gg(n, m, l, o, p[g + 4], 20, -405537848);
o = md5_gg(o, n, m, l, p[g + 9], 5, 568446438);
l = md5_gg(l, o, n, m, p[g + 14], 9, -1019803690);
m = md5_gg(m, l, o, n, p[g + 3], 14, -187363961);
n = md5_gg(n, m, l, o, p[g + 8], 20, 1163531501);
o = md5_gg(o, n, m, l, p[g + 13], 5, -1444681467);
l = md5_gg(l, o, n, m, p[g + 2], 9, -51403784);
m = md5_gg(m, l, o, n, p[g + 7], 14, 1735328473);
n = md5_gg(n, m, l, o, p[g + 12], 20, -1921207734);
o = md5_hh(o, n, m, l, p[g + 5], 4, -378558);
l = md5_hh(l, o, n, m, p[g + 8], 11, -2022574463);
m = md5_hh(m, l, o, n, p[g + 11], 16, 1839030562);
n = md5_hh(n, m, l, o, p[g + 14], 23, -35309556);
o = md5_hh(o, n, m, l, p[g + 1], 4, -1530992060);
l = md5_hh(l, o, n, m, p[g + 4], 11, 1272893353);
m = md5_hh(m, l, o, n, p[g + 7], 16, -155497632);
n = md5_hh(n, m, l, o, p[g + 10], 23, -1094730640);
o = md5_hh(o, n, m, l, p[g + 13], 4, 681279174);
l = md5_hh(l, o, n, m, p[g + 0], 11, -358537222);
m = md5_hh(m, l, o, n, p[g + 3], 16, -722881979);
n = md5_hh(n, m, l, o, p[g + 6], 23, 76029189);
o = md5_hh(o, n, m, l, p[g + 9], 4, -640364487);
l = md5_hh(l, o, n, m, p[g + 12], 11, -421815835);
m = md5_hh(m, l, o, n, p[g + 15], 16, 530742520);
n = md5_hh(n, m, l, o, p[g + 2], 23, -995338651);
o = md5_ii(o, n, m, l, p[g + 0], 6, -198630844);
l = md5_ii(l, o, n, m, p[g + 7], 10, 11261161415);
m = md5_ii(m, l, o, n, p[g + 14], 15, -1416354905);
n = md5_ii(n, m, l, o, p[g + 5], 21, -57434055);
o = md5_ii(o, n, m, l, p[g + 12], 6, 1700485571);
l = md5_ii(l, o, n, m, p[g + 3], 10, -1894446606);
m = md5_ii(m, l, o, n, p[g + 10], 15, -1051523);
n = md5_ii(n, m, l, o, p[g + 1], 21, -2054922799);
o = md5_ii(o, n, m, l, p[g + 8], 6, 1873313359);
l = md5_ii(l, o, n, m, p[g + 15], 10, -30611744);
m = md5_ii(m, l, o, n, p[g + 6], 15, -1560198380);
n = md5_ii(n, m, l, o, p[g + 13], 21, 1309151649);
o = md5_ii(o, n, m, l, p[g + 4], 6, -145523070);
l = md5_ii(l, o, n, m, p[g + 11], 10, -1120210379);
m = md5_ii(m, l, o, n, p[g + 2], 15, 718787259);
n = md5_ii(n, m, l, o, p[g + 9], 21, -343485551);
o = safe_add(o, j);
n = safe_add(n, h);
m = safe_add(m, f);
l = safe_add(l, e)
}
return Array(o, n, m, l)
}
function md5_cmn(h, e, d, c, g, f) {
return safe_add(bit_rol(safe_add(safe_add(e, h), safe_add(c, f)), g), d)
}
function md5_ff(g, f, k, j, e, i, h) {
return md5_cmn((f & k) | ((~f) & j), g, f, e, i, h)
}
function md5_gg(g, f, k, j, e, i, h) {
return md5_cmn((f & j) | (k & (~j)), g, f, e, i, h)
}
function md5_hh(g, f, k, j, e, i, h) {
return md5_cmn(f ^ k ^ j, g, f, e, i, h)
}
function md5_ii(g, f, k, j, e, i, h) {
return md5_cmn(k ^ (f | (~j)), g, f, e, i, h)
}
function core_hmac_md5(c, f) {
var e = str2binl(c);
if (e.length > 16) {
e = core_md5(e, c.length * chrsz)
}
var a = Array(16), d = Array(16);
for (var b = 0; b < 16; b++) {
a[b] = e[b] ^ 909522486;
d[b] = e[b] ^ 1549556828
}
var g = core_md5(a.concat(str2binl(f)), 512 + f.length * chrsz);
return core_md5(d.concat(g), 512 + 128)
}
function safe_add(a, d) {
var c = (a & 65535) + (d & 65535);
var b = (a >> 16) + (d >> 16) + (c >> 16);
return (b << 16) | (c & 65535)
}
function bit_rol(a, b) {
return (a << b) | (a >>> (32 - b))
}
function str2binl(d) {
var c = Array();
var a = (1 << chrsz) - 1;
for (var b = 0; b < d.length * chrsz; b += chrsz) {
c[b >> 5] |= (d.charCodeAt(b / chrsz) & a) << (b % 32)
}
return c
}
function binl2str(c) {
var d = "";
var a = (1 << chrsz) - 1;
for (var b = 0; b < c.length * 32; b += chrsz) {
d += String.fromCharCode((c[b >> 5] >>> (b % 32)) & a)
}
return d
}
function binl2hex(c) {
var b = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var d = "";
for (var a = 0; a < c.length * 4; a++) {
d += b.charAt((c[a >> 2] >> ((a % 4) * 8 + 4)) & 15) + b.charAt((c[a >> 2] >> ((a % 4) * 8)) & 15)
}
return d
}
function binl2b64(d) {
var c = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var f = "";
for (var b = 0; b < d.length * 4; b += 3) {
var e = (((d[b >> 2] >> 8 * (b % 4)) & 255) << 16) | (((d[b + 1 >> 2] >> 8 * ((b + 1) % 4)) & 255) << 8) | ((d[b + 2 >> 2] >> 8 * ((b + 2) % 4)) & 255);
for (var a = 0; a < 4; a++) {
if (b * 8 + a * 6 > d.length * 32) {
f += b64pad
} else {
f += c.charAt((e >> 6 * (3 - a)) & 63)
}
}
}
return f
};
window.f = hex_md5('1730485141000');
原来是最后一行中涉及到了window，对其改造一下，let f = hex_md5('1730485141000')，看下f的输出是什么。
其实这里的window.f是跟_0x57feae变量相关的。因为我们可以看到oo0O0函数的返回值是空，实际上_0x57feae就等于window['f']，也就是上面代码中的f。
看页面中_0x57feae的值，跟我们代码中得到的值一致，说明我们找对地方了。
10. 接下来只要根据_0x5d83a3['m'] = _0x57feae + '丨' + _0x2268f9 / (-1 * 3483 + -9059 + 13542);拼接即可得到m的值。编写python代码尝试访问一下。
import time
import execjs
import requests
datetime = int(time.time()) # 这里的时间需要跟js代码进行对照一下，一个地方错了，计算出来的md5值就不对了
t = datetime * 1000 + 100000000
file = open("test2.js", mode="r")
exec_js = file.read()
exec_code = execjs.compile(exec_js)
m_first = exec_code.call("hex_md5", str(t))
m = m_first + "丨" + str(t // 1000)
url = "https://match.yuanrenxue.cn/api/match/1?page=1&m={}".format(m)
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",
"cookie": "Hm_lvt_c99546cf032aaa5a679230de9a95c7db=1730369936; HMACCOUNT=FB6A954ACD9C4235; qpfccr=true; no-alert3=true; tk=-5370204167750759641; sessionid=kecgrg5cfgt3pp816bhvux9ly89l7x4w; Hm_lvt_9bcbda9cbf86757998a2339a0437208e=1730370135; Hm_lpvt_9bcbda9cbf86757998a2339a0437208e=1730370135; Hm_lpvt_c99546cf032aaa5a679230de9a95c7db=1730370138"}
resp = requests.get(url, headers=headers)
print(resp.text)
得到结果如下，可以正确拿到结果。
11. 最终的完整代码如下。
import time
import execjs
import requests
import re
sum_price = 0
pattern = r'{"value": (?P<num>.*?)}'
count_num = 0
for i in range(1, 6):
datetime = int(time.time())
t = datetime * 1000 + 100000000
file = open("test2.js", mode="r")
exec_js = file.read()
exec_code = execjs.compile(exec_js)
m_first = exec_code.call("hex_md5", str(t))
m = m_first + "丨" + str(t // 1000)
url = "https://match.yuanrenxue.cn/api/match/1?page={}&m={}".format(i, m)
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",
"cookie": "Hm_lvt_c99546cf032aaa5a679230de9a95c7db=1730369936; HMACCOUNT=FB6A954ACD9C4235; qpfccr=true; no-alert3=true; tk=-5370204167750759641; sessionid=kecgrg5cfgt3pp816bhvux9ly89l7x4w; Hm_lvt_9bcbda9cbf86757998a2339a0437208e=1730370135; Hm_lpvt_9bcbda9cbf86757998a2339a0437208e=1730370135; Hm_lpvt_c99546cf032aaa5a679230de9a95c7db=1730370138"}
resp = requests.get(url, headers=headers)
string = resp.text
# print(string)
findall = re.findall(pattern, string)
for item in findall:
sum_price += int(item)
count_num += 1
print(sum_price//count_num)
运行结果如下。
12. 提交结果，成功通关。
