宣告：本文只作學習研究，禁止用於非法用途，否則後果自負，如有侵權，請告知刪除，謝謝！

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前言

目標網站：aHR0cHM6Ly93d3cuYXFpc3R1ZHkuY24v
反爬型別：無限debugger、禁止F12除錯
加密型別：JS混淆、AES、DES、BASE64

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一、頁面分析

1.1 解決無限debugger

進入網頁按F12，出現下圖

解決辦法：在行數旁邊點選右鍵，點選紅框內容，輸入false，點選執行即可

1.2 解決禁止除錯

解決無限debugger後，又不給除錯了，如下圖，咋解決呢？？

解決辦法：主要是下面兩個函式在搞事情熬，用fiddler中間人改寫，咋改寫自己去搜吧，這裡就不描述了

弄好之後就可以除錯了！！

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二、加密解密破解

獲取如下資料

加密引數是請求時傳入的引數

解密引數就是響應的資料

2.1 請求引數數破解

直接下XHR斷點，找到請求引數的加密位置，這個檔案的JS是https://www.aqistudy.cn/js/encrypt_eZMqs7H0RJRS.min.js?t=1603351502，扣下來放本地可以除錯用

這裡的加密方法是pNg63WJXHfm8r，可以在扣下的JS程式碼裡看出主要的加密方式MD5和BASE64，這裡就不用原始碼的加密方式了，直接用CryptoJS加密包

原始碼的加密函式都在這個混淆的JS裡面

改寫好程式碼後就可以破解請求引數的加密方式了，應為裡面的時間戳不一樣，所以有部分差異，用來發請求是完全沒問題的

2.2 返回引數解密

解密的函式位置在這裡，也在之前扣下來的JS函式裡

裡面是這幾個加密方法

自己用加密包改寫一下就可以實現解密了

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三、JS原始碼

var CryptoJS = require('crypto-js');

const askCju6cmMLz = "apAteRdhDd5i5n74";
const asieXomd2dAl = "bN8izWwuwRjjA0pH";
const ackWpSYGqWDU = "dOzNkylRKkmvJ8WP";
const aciPXJAqV8bc = "fS6yu6Kz72UWOqLm";
const dskq6mV934LL = "hY8XWvmotJ7yhyBV";
const dsi68kk2Mig9 = "xCYtuanHBbJFWlKg";
const dckmQMBceyd6 = "ougX3aSyswLitv49";
const dciNka5Pmv4x = "pebJx2rKU7WTkBP6";
const aes_local_key = 'emhlbnFpcGFsbWtleQ==';
const aes_local_iv = 'emhlbnFpcGFsbWl2';
var BASE64 = {
    encrypt: function (text) {
        // var b = new Base64();
        // return b.encode(text)
        var wordArray = CryptoJS.enc.Utf8.parse(text);
        return CryptoJS.enc.Base64.stringify(wordArray)
    }, decrypt: function (text) {
        // var b = new Base64();
        // return b.decode(text)
        var parsedWordArray = CryptoJS.enc.Base64.parse(text);
        return parsedWordArray.toString(CryptoJS.enc.Utf8)
    }
};
var DES = {
    encrypt: function (text, key, iv) {
        var secretkey = (CryptoJS.MD5(key).toString()).substr(0, 16);
        var secretiv = (CryptoJS.MD5(iv).toString()).substr(24, 8);
        secretkey = CryptoJS.enc.Utf8.parse(secretkey);
        secretiv = CryptoJS.enc.Utf8.parse(secretiv);
        var result = CryptoJS.DES.encrypt(text, secretkey, {
            iv: secretiv,
            mode: CryptoJS.mode.CBC,
            padding: CryptoJS.pad.Pkcs7
        });
        return result.toString()
    }, decrypt: function (text, key, iv) {
        var secretkey = (CryptoJS.MD5(key).toString()).substr(0, 16);
        var secretiv = (CryptoJS.MD5(iv).toString()).substr(24, 8);
        secretkey = CryptoJS.enc.Utf8.parse(secretkey);
        secretiv = CryptoJS.enc.Utf8.parse(secretiv);
        var result = CryptoJS.DES.decrypt(text, secretkey, {
            iv: secretiv,
            mode: CryptoJS.mode.CBC,
            padding: CryptoJS.pad.Pkcs7
        });
        return result.toString(CryptoJS.enc.Utf8)
    }
};
var AES = {
    encrypt: function (text, key, iv) {
        var secretkey = (CryptoJS.MD5(key).toString()).substr(16, 16);
        var secretiv = (CryptoJS.MD5(iv).toString()).substr(0, 16);
        secretkey = CryptoJS.enc.Utf8.parse(secretkey);
        secretiv = CryptoJS.enc.Utf8.parse(secretiv);
        var result = CryptoJS.AES.encrypt(text, secretkey, {
            iv: secretiv,
            mode: CryptoJS.mode.CBC,
            padding: CryptoJS.pad.Pkcs7
        });
        return result.toString()
    }, decrypt: function (text, key, iv) {
        var secretkey = (CryptoJS.MD5(key).toString()).substr(16, 16);
        var secretiv = (CryptoJS.MD5(iv).toString()).substr(0, 16);
        secretkey = CryptoJS.enc.Utf8.parse(secretkey);
        secretiv = CryptoJS.enc.Utf8.parse(secretiv);
        var result = CryptoJS.AES.decrypt(text, secretkey, {
            iv: secretiv,
            mode: CryptoJS.mode.CBC,
            padding: CryptoJS.pad.Pkcs7
        });
        return result.toString(CryptoJS.enc.Utf8)
    }
};
var localStorageUtil = {
    save: function (name, value) {
        var text = JSON.stringify(value);
        text = BASE64.encrypt(text);
        text = AES.encrypt(text, aes_local_key, aes_local_iv);
        try {
            localStorage.setItem(name, text)
        } catch (oException) {
            if (oException.name === 'QuotaExceededError') {
                console.log('超出本地儲存限額！');
                localStorage.clear();
                localStorage.setItem(name, text)
            }
        }
    }, check: function (name) {
        return localStorage.getItem(name)
    }, getValue: function (name) {
        var text = localStorage.getItem(name);
        var result = null;
        if (text) {
            text = AES.decrypt(text, aes_local_key, aes_local_iv);
            text = BASE64.decrypt(text);
            result = JSON.parse(text)
        }
        return result
    }, remove: function (name) {
        localStorage.removeItem(name)
    }
};

function getDataFromLocalStorage(key, period) {
    if (typeof period === 'undefined') {
        period = 0
    }
    var d = DES.encrypt(key);
    d = BASE64.encrypt(key);
    var data = localStorageUtil.getValue(key);
    if (data) {
        const time = data.time;
        const current = new Date().getTime();
        if (new Date().getHours() >= 0 && new Date().getHours() < 5 && period > 1) {
            period = 1
        }
        if (current - (period * 60 * 60 * 1000) > time) {
            data = null
        }
        if (new Date().getHours() >= 5 && new Date(time).getDate() !== new Date().getDate() && period === 24) {
            data = null
        }
    }
    return data
}

function ObjectSort(obj) {
    var newObject = {};
    Object.keys(obj).sort().map(function (key) {
        newObject[key] = obj[key]
    });
    return newObject
}

function dX506x9jVK3vuMMhoz6ZXx(data) {
    data = AES.decrypt(data, askCju6cmMLz, asieXomd2dAl);
    data = DES.decrypt(data, dskq6mV934LL, dsi68kk2Mig9);
    data = BASE64.decrypt(data);
    return data
}

var pNg63WJXHfm8r = (function () {
    function ObjectSort(obj) {
        var newObject = {};
        Object.keys(obj).sort().map(function (key) {
            newObject[key] = obj[key]
        });
        return newObject
    }

    return function (method, obj) {
        var appId = 'baec98a73c1bff796603cb2fa9d6d449';
        var clienttype = 'WEB';
        var timestamp = new Date().getTime();
        var param = {
            appId: appId,
            method: method,
            timestamp: timestamp,
            clienttype: clienttype,
            object: obj,
            // secret: hex_md5(appId + method + timestamp + clienttype + JSON.stringify(ObjectSort(obj)))
            secret: CryptoJS.MD5(appId + method + timestamp + clienttype + JSON.stringify(ObjectSort(obj))).toString()
        };
        param = BASE64.encrypt(JSON.stringify(param));
        return param
    }
})();

function sJwf3VwkSgqmf0Ddr92K(method, object, callback, period) {
    const key = hex_md5(method + JSON.stringify(object));
    const data = getDataFromLocalStorage(key, period);
    if (!data) {
        var param = pNg63WJXHfm8r(method, object);
        $.ajax({
            url: '../apinew/aqistudyapi.php', data: {h0lgYxgR3: param}, type: "post", success: function (data) {
                data = dX506x9jVK3vuMMhoz6ZXx(data);
                obj = JSON.parse(data);
                if (obj.success) {
                    if (period > 0) {
                        obj.result.time = new Date().getTime();
                        localStorageUtil.save(key, obj.result)
                    }
                    callback(obj.result)
                } else {
                    console.log(obj.errcode, obj.errmsg)
                }
            }
        })
    } else {
        callback(data)
    }
}