调试干扰

进入题目正常加载数据后
打开调试工具，等待一会(2~3分钟) 刷新页面 cookie 失效以后会弹窗
删除 cookie 中的 m 字段再刷新页面也是一样的

点击确定后，页面自动刷新完会进入 无限 debugger

查看上一层堆栈
生成 debugger 的代码 是经过混淆的

手动解混淆后的代码

(function () {
    // function 中的代码并不会执行，debugger主要是靠 ['constructor'](('debugger'))['call']('action') 执行
}['constructor'](('debugger'))['call']('action'))

// function(){}['constructor'] 是 Function
// 上面的代码也也可以写成
Function.prototype.constructor('debugger')()

Hook Function

这个 debugger 是靠 Function 的构造器生成的
Hook Function.prototype.constructor 就可以过掉这个 debugger

let _Function = Function.prototype.constructor;
Function.prototype.constructor = function(Value){
    if (Value.indexOf('debugger') !== -1){
        return _Function.call(this, '')
    }
    return _Function.call(this, Value)
};

将代码在控制台运行就可以正常调试了

加密参数定位

数据接口在 https://match.yuanrenxue.cn/api/match 里
对应的请求参数为 page(页码)

加密参数在 cookie m字段

hook Cookie

删除cookie中对应的 m 字段

hook cookie 找到 m字段加密的位置（加上 hook Function 的代码）

// Hook Function
let _Function = Function.prototype.constructor;
Function.prototype.constructor = function(Value){
    if (Value.indexOf('debugger') !== -1){
        return _Function.call(this, '')
    }
    return _Function.call(this, Value)
};

// Hook Cookie
(function () {
    let cookie_func = Object.getOwnPropertyDescriptor(Document.prototype, 'cookie')
    Object.defineProperty(document, 'cookie', {
        get() {
            return cookie_func.get.call(this, val);
        },
        set(val) {
            if (val.indexOf('m') !== -1){
                debugger
            }
            return cookie_func.set.call(this, val);
        }
    })
})();

hook 到 cookie 后，向上查看堆栈就能找到生成 cookie m参数的位置

AST 解混淆

每次请求返回的代码都不一样，但执行逻辑是一样的，所以将 2.html 文件替换，方便调试

js代码是在 2.html 文件里，script代码 是被 script标签 包裹的（只需要将被标签包裹住的代码还原即可）

将代码 copy 到本地

字符串解密

先看看混淆代码

document[$dbsm_0x4638('\x30\x78\x34\x38\x39', '\x28\x37\x28\x5a') + $dbsm_0x4638('\x30\x78\x34\x61', '\x29\x69\x38\x67')] = _0x5eed8e[$dbsm_0x4638('\x30\x78\x33\x61\x36', '\x7a\x6b\x34\x53') + '\x79\x62'](_0x5eed8e[$dbsm_0x4638('\x30\x78\x63\x36', '\x64\x79\x2a\x5d') + '\x79\x62'](_0x5eed8e[$dbsm_0x4638('\x30\x78\x34\x65\x33', '\x64\x75\x52\x62') + '\x79\x62'](_0x5eed8e[$dbsm_0x4638('\x30\x78\x31\x62\x33', '\x44\x21\x4c\x4b') + '\x79\x62'](_0x5eed8e[$dbsm_0x4638('\x30\x78\x34\x62\x38', '\x54\x45\x58\x6e') + '\x79\x62'](_0x5eed8e[$dbsm_0x4638('\x30\x78\x34\x32\x65', '\x29\x69\x38\x67') + '\x79\x62']('\x6d', _0x5eed8e[$dbsm_0x4638('\x30\x78\x32\x64\x38', '\x6f\x38\x4a\x47') + '\x67\x61'](_0x2fdc55)), '\x3d'), _0x5eed8e[$dbsm_0x4638('\x30\x78\x33\x38\x31', '\x39\x52\x36\x32') + '\x70\x6d'](_0x691b6d, _0x29c654)), '\x7c'), _0x29c654), _0x5eed8e[$dbsm_0x4638('\x30\x78\x37\x38', '\x72\x69\x63\x50') + '\x62\x5a']);
location['\x72\x65\x6c' + $dbsm_0x4638('\x30\x78\x31\x31\x63', '\x6e\x34\x54\x28')]();

// 解混淆后
document['cookie'] = (((((('m' + (_0x2fdc55())) + '=') + _0x691b6d(_0x29c654)) + '|') + _0x29c654) + '; path=/');
location['reload']();

还原解密函数

混淆的代码中有很多处字符串是 $dbsm_0x4638 函数生成的
查看 $dbsm_0x4638（解密函数）

解密函数依赖 $dbsm_0x23b3 数组

文件开头 $dbsm_0x23b3 是一个大数组 后经过一个自执行函数打乱排序

应在浏览器环境中先拿到 打乱排序后的数组 $dbsm_0x23b3
在断点处断住之后，copy大数组
> 将 copy 到的数组拿到之后，替换到本地，（自执行函数就不需要了）

解密函数中 有很多 if 分支，在浏览器打上断点调试
这里大数组的值是对的，与浏览器相同


第一个 if 条件是通过的 通过以后进入了一个自执行函数 F9 或单机
进入这个自执行函数

首先会进入一个 try catch 块

查看 Function 里面的代码
执行这段代码后 浏览器返回的是 window (全局对象) / nodejs 返回的就是 global


atob在浏览器环境中是有的 但是在node中没有，node需要补上 atob 这个函数
true || true 不会执行后面的代码

后面的代码不会执行，所以 atob 还是一个系统函数 nitive code

在node中补 atob
atob = require(‘atob’); // npm installer atob
自执行函数执行完之后，给解密方法添加了一些属性之后，这个自执行函数就结束了

继续向下执行，查看这个 if 条件通过后的代码
打上断点后，F8 跳到这个断点或 单机

前面都是定义，在执行方法处打上断点后直接跳到这个代码段，再单步调试查看这个函数执行了什么

做了一个 格式化检测
浏览器里的值是 true

在 node 值是 false，将 node 改写 写死为 true


上述的步骤做好后，解密函数就可以正常执行了，测试一下

AST 配合解密函数还原字符串

将代码拿到网站中查看对应的结构 AST explorer

需要遍历 CallExpression 类型的节点
并且 callee 属性为 Identifier 节点
Identifier 节点的 name 值为 $dbsm_0x4638
$dbsm_0x4638 是解密函数

// 安装 babel 库:  npm install @babel/core
const fs = require('fs')

const traverse = require('@babel/traverse').default  // 用于遍历 AST 节点
const types = require('@babel/types')  // 用于判断， 生成 AST 节点

const parser = require('@babel/parser')  // 将js代码解析成ast节点
const generator = require('@babel/generator').default  // 将ast节点转换成js代码

// 读取(路径记得改)
const ast_code = fs.readFileSync('demo.js', {
    encoding: 'utf-8'
})

let ast = parser.parse(ast_code)  // 将js代码解析成ast语法树

// 这里插入解析规则
///

// 解密函数中需要的 atob 函数
global['atob'] = require('atob');  // npm install atob
// 解密函数依赖的大数组
var $dbsm_0x23b3 = ["QjjDhA==", "IyQb", "552u776q5L6D", "eCvDoA==", "EHwT", "wpdVw6I=", "RArDvA==", "Hk8D", "MUvCnA==", "wotlw5k=", "w7xTwrU=", "wrLCvT0=", "w5LCvUc=", "w6hIwrY=", "w716Rw==", "L8OzwpI=", "MlMA", "Gm8r", "WcKVw44=", "W8KKw5s=", "w6bCgUE=", "TSnDpg==", "aEXCuw==", "HMOzwrc=", "wqs3Bg==", "KHsW", "AcOtwp4=", "N8KeIA==", "cifCig==", "wrBZw7M=", "AMKtw4g=", "FMOkwqA=", "WwEa", "DjzDqA==", "wo7CnAs=", "wpdoAQ==", "JsOfwp0=", "J8KRKA==", "ZsOCw58=", "wojCiAQ=", "w7vCuMKR", "ATY3", "ZyfCvQ==", "dCJD", "UMKpVg==", "O2US", "wqE3LA==", "SMOtwqk=", "w5PCh8Ki", "bMKyaA==", "S8OjEw==", "AcKGw68=", "wpVFw5M=", "fDvDpw==", "w7Brwqk=", "dGYb", "eC45", "AsOGwrE=", "w7fDhcKz", "YATDlA==", "DsK6w6A=", "wrNLw7U=", "biAN", "TxVF", "VzJ2", "wr3CrRc=", "wr0WEQ==", "YAvDrw==", "wqtZNg==", "K0QC", "Y8KBw6c=", "Q8KEw6E=", "wrUhKQ==", "CXfDjA==", "G34/", "esOcTQ==", "wpFiDA==", "w4xCaQ==", "Blo7", "w6vDvcKT", "eyFl", "BE8K", "w6HCvUs=", "wplqw6M=", "wqdOw5Y=", "wqzDr8KW", "XsKdcw==", "VMKsag==", "ecO9w58=", "EkcB", "wpJIw5U=", "JFrDiA==", "YsO7cg==", "eTvCiA==", "wojCuxc=", "WyXDmw==", "MUrDtg==", "w5XDhcKw", "fMKLcw==", "eMOhw5w=", "EGnCjA==", "RcKTYg==", "OALDvQ==", "HlE/", "Q8KGag==", "wpQpFA==", "wqg5wqw=", "ZsOqw4A=", "wp1Ewpk=", "wpkPwro=", "UT9O", "XsOmw7g=", "CFkm", "W0gI", "P8Ouwrw=", "eEMQ", "L8KSw7k=", "ecOvw4Y=", "WT9O", "J8KYfw==", "BiEH", "w7VnwpM=", "w6dxbg==", "wo/Ci8Os", "wqgpAg==", "wozCm8OB", "clHCjA==", "QsOsw6Y=", "woZew44=", "Zz7DnA==", "RgzDrg==", "XMKAVw==", "SwBb", "VMKCSg==", "Ryp1", "wr9Mw44=", "w4rDqMK7", "UMOiw6E=", "w6fDo1U=", "VMOEw4c=", "EcKew4c=", "c8KRZQ==", "WsOOUQ==", "wodyLA==", "e8KMUg==", "w5TDln0=", "GcKbw4s=", "BMK0w7Y=", "wpIewoU=", "R8Kcw6k=", "wobDuMOi", "BsO/wp4=", "VcOnw6w=", "w5t0wok=", "wqgPwpA=", "woTCu8Or", "fg3DvQ==", "L8KEw6g=", "wphswpI=", "woYgIg==", "AXgq", "VTLCqg==", "wrRww4Q=", "wqM1Ig==", "YCzDjQ==", "EVkx", "PWsV", "JWbDjw==", "DF4M", "WcObw54=", "DMKXw6w=", "EcKmOA==", "WsOJw58=", "ajsY", "SsK1w4Q=", "w4zDqMK0", "Gics", "UTkL", "w754wrA=", "IBw2", "wopkDA==", "NFEb", "EFHDig==", "W8Okw40=", "C8KpVg==", "EmnDsQ==", "VhvDmA==", "wqTCoMOV", "fcOfw6A=", "JsKkNw==", "ecOjKg==", "aSTDsA==", "woYfOg==", "YcOyYA==", "fMOtw4E=", "eMOSw5A=", "w7jCn8KA", "LGI2", "asO0Ow==", "f2cW", "egvDuA==", "GcOeGQ==", "w4NYQw==", "IMKvw68=", "wrfDpsO6", "BcKjJA==", "w6PDu2g=", "ayTDrA==", "B0kt", "QsKTVg==", "wpvCuMO1", "YsOHw6M=", "B1XCuA==", "B8Kjw5w=", "Q8Oqw6g=", "RMOAw4c=", "w4/DssK0", "w4rDm8KQ", "ScOwQg==", "YsOGw5s=", "RjbDjQ==", "SCLDpg==", "VcOVMQ==", "KnHCgQ==", "JMONwrU=", "WcO/Cw==", "YcKuRQ==", "wr0MCw==", "WAHDnw==", "esKuUg==", "wp8mNA==", "MMOAEw==", "bcOBw4w=", "w5LCl8K/", "KXk3", "agpl", "wprChSg=", "w5BmYw==", "S2zCrg==", "BXIv", "EMOUwpA=", "WcKvVg==", "WsKkw4I=", "w69iwqQ=", "e8KYVw==", "Y8Ojw6s=", "KUUk", "LcOYwq0=", "Xj/DvQ==", "RiXDkg==", "wrbDiMOj", "Ujd6", "cAc+", "dzt2", "QsO9w6w=", "Ghg3", "ccKkcA==", "fRvDkA==", "KcK4Og==", "H30u", "PMKyw4Y=", "YyrDtw==", "wpDCiMOh", "wqwowoc=", "wojCjDQ=", "wqHCj8OU", "w7HCm8KR", "XsOVw7Q=", "w47Cp8Kj", "w6LCnMKo", "GsKMbw==", "w5J0wrU=", "RCnDuA==", "wpfCgjE=", "wrMnBw==", "w7bDqsK/", "KEM4", "a8OKwrw=", "wpBlw5Q=", "MTAo", "X8K2w5I=", "WsOvFQ==", "Yz7DkQ==", "W8Ocw54=", "ahtQ", "D2vDrg==", "VsKcw4o=", "Fy/CkQ==", "JnAI", "MMOswrA=", "w4zDt8KI", "wrDCksOj", "GBcc", "fcO9Sg==", "w4HDgXY=", "MsKeHA==", "ccOBw4o=", "QsOgw4M=", "Q8OjBg==", "EMK5FQ==", "R8OCw6o=", "XS9D", "d8KfcA==", "wpbCmSE=", "w4XChn8=", "aMKieA==", "woVhGQ==", "wo7CnsOK", "AXwd", "dCAI", "worDhsOC", "V8Krw4A=", "VxHCvA==", "woFywrg=", "w4ZRaA==", "VMO5w6Q=", "wp1zHg==", "wqw/wqo=", "BMKRw58=", "wpxjw7U=", "McKEw4o=", "YyIF", "fkME", "wp1xw6o=", "Sg80", "HMKbAQ==", "HHoX", "MsK7Cg==", "woZWCw==", "GsOKwrE=", "P8KPGg==", "bBDDhw==", "ewLDng==", "TSMk", "wrbCrT4=", "w7tkRg==", "DDQv", "wrdpLw==", "wonDmsKK", "Tx8o", "WMODw7I=", "MXgT", "w6PCrUw=", "wobCg8OR", "Z8Odw6U=", "w55LwrA=", "O8ORwqU=", "w5vDo10=", "wq3Cl8OT", "asKMUQ==", "woBpPg==", "SnPCrA==", "wo7Dn8KG", "wqVtw54=", "wo9WNA==", "QMObNw==", "TMKAw4Y=", "eHEn", "w5rDqcKk", "wqRlw68=", "CxYO", "WcK2VA==", "wpgrAw==", "wpHCgw4=", "wrHCklU=", "BkIZ", "woh4wqM=", "wpBICg==", "AcORGg==", "wpd0NQ==", "w4HDqsKa", "YcKvew==", "wpvCusOs", "K8K5JA==", "w7LCrGU=", "XkUT", "XMOow6s=", "w7/DqcKj", "NsOdwqQ=", "VcOsw7Q=", "eXED", "McKbdA==", "AHXCow==", "K8KeQg==", "ZgMB", "Hm4g", "f8Oqwow=", "AHPDpA==", "wq4Mwq0=", "WsKeYg==", "fDjCog==", "wpY/PQ==", "V8K9cg==", "OlAN", "esO8Xw==", "GsKaJA==", "WgjDnQ==", "DW7CrA==", "f8K1Qg==", "eSw0", "RAIx", "Cls9", "FMOYwqM=", "w4bCvVE=", "wovDkMKK", "WsK/Tw==", "QRrDgw==", "wpV9w4o=", "wrXCmxA=", "wpXChik=", "wq5kw7g=", "wo5jPA==", "w5VgZQ==", "wr1Cw4o=", "wpBYw60=", "woVOwpw=", "wpB2Cg==", "cBlA", "wo52Cg==", "QcO/w58=", "w65UwrM=", "fyfCng==", "w6TCp2s=", "wrRWJQ==", "w7bCv8KW", "XsKyeQ==", "MWbDiQ==", "w4jDscK1", "d8K1w4U=", "C34+", "wprDt8O9", "VsKlw7E=", "w4JdfQ==", "wos1Jg==", "PE7DuA==", "w4bDnsKM", "w5XDq8KA", "JTIy", "w5LDpMKu", "YArDsQ==", "K8K9IQ==", "DsKmw7E=", "BMKxw7A=", "wrvDncKg", "dzrChQ==", "G1nCjg==", "YEYA", "OsKzJg==", "wrfCugs=", "XlvCkA==", "fcKDw54=", "e8OMw40=", "wpBDw68=", "w45CwoY=", "WsONwpw=", "BFDCiQ==", "w7VidA==", "Aloq", "w73Cq8KT", "IkE4", "wqN0Nw==", "dBLDmw==", "wqlRw44=", "w7lleQ==", "C1TCgQ==", "PsKPJQ==", "VcK0bg==", "XcOBwo4=", "VMOjZQ==", "w7pjXg==", "wrBvFw==", "cARj", "w4JSaQ==", "MsK4w4Y=", "acOeeQ==", "AsOQIQ==", "wqUDBQ==", "X1Zb", "RMKKaA==", "w6fDs8KB", "HsKzdw==", "V8OJLA==", "XMOFwqo=", "V8Kybw==", "w5zDhG4=", "wrFHNQ==", "RcOhw6s=", "w6Vhbg==", "XcOow48=", "w5bCi24=", "NkfDgw==", "AcOyHA==", "XUzClw==", "w5XCgGY=", "w5rDhVA=", "a1c3", "WnzCsw==", "wrvDncK4", "w7pUwqk=", "QT1j", "DmLCuA==", "w69tVA==", "w6bCvMK+", "cVUo", "dcO8wqc=", "cBlK", "w5zDhWc=", "wpt+w6w=", "w6lFwrI=", "wojDiMOS", "XcOZw78=", "UwhO", "wotmw4M=", "RC4Y", "w77CjU0=", "S8O3w6U=", "PGAG", "WsKowq8=", "wqTDmsOo", "Hlo8", "I8OuwqQ=", "c8OAKA==", "cl7Cmw==", "V3PCvA==", "DnM2", "wqQTGQ==", "WWYV", "wozDosOV", "w7fDisKb", "csO+w4A=", "IsKiPw==", "w75iQA==", "Ww7CgA==", "wqtrLA==", "fsKtw6c=", "DsKbw5M=", "w5fDgMKO", "wrcaIQ==", "S1c5", "wrMaOQ==", "AcKIcA==", "Cjww", "w6VWYA==", "OQom", "ZxjDjQ==", "wrMoNw==", "VQXDmA==", "d8KeYQ==", "BEs8", "J0k9", "wpEeEQ==", "wqAHFQ==", "w6/DicKx", "ScOiCg==", "YxXCtg==", "dsOiw4k=", "THjCqQ==", "HMK+AA==", "wpQhHw==", "wr7CvcOq", "K0bDiw==", "eMOAcg==", "w60rdg==", "L1IC", "woNlw60=", "K8KDw4k=", "wrpFDg==", "wpFEMw==", "w6fCrGw=", "wo0mCA==", "cUTCtQ==", "w7LCqMKX", "W8OiwoQ=", "QAvDqQ==", "AD03", "aDfDiQ==", "UTHDpQ==", "ZhMa", "w6bDrMKs", "AkvCuw==", "wo8yBQ==", "wo4IPQ==", "M3QK", "TwrDnw==", "wqFcDw==", "e8O7bA==", "PkHDlg==", "esOBwqk=", "eRFw", "ZyvCnw==", "w7PDtcKx", "wpQ1woA=", "WwFc", "XRsF", "BMOCPQ==", "SHHCjA==", "XcOew5w=", "wqhaKA==", "YynCvg==", "XS3Chg==", "BFI0", "wr9HDA==", "wpx7w5o=", "w6DDmHU=", "bA84", "I3AA", "w7jCn2s=", "BWPClw==", "wpbDt8O1", "wpsKYw==", "wq9jw5I=", "woFQwp4=", "wpI9Mw==", "B8KwEQ==", "DmYq", "CcKbAQ==", "TS49", "w6bDvWU=", "YsOVNw==", "dMKBRQ==", "NXg8", "wrBJwoI=", "KsKAYQ==", "EcKNdQ==", "ecO7OA==", "wrV6w7I=", "WMOSw6Y=", "wqV6wqI=", "VcKyUA==", "fcO4Sg==", "IXQl", "Z8KaXw==", "VnvCnQ==", "wr9qOg==", "w6PDiGs=", "QD0a", "wrzCm8OQ", "w6LCp1w=", "bMK+w6A=", "w7PDn24=", "T2LClg==", "woBJw7c=", "SiPDjQ==", "wqbChTI=", "Wj3Dpg==", "fxgU", "YhzCuA==", "ETsw", "W8OdCA==", "GcOxIg==", "Kxkw", "B2zCuA==", "OBER", "Cl4R", "wrLDpMK8", "wq/CnsOZ", "w5XDv8Kw", "dysc", "Y8KjVQ==", "fcOvw40=", "CWjDug==", "bMObNg==", "ScOEw4c=", "w6RTwqM=", "wpJLEw==", "BTw5", "ScKDw4c=", "XMKbw5o=", "TxjDhw==", "w5pOew==", "wpJawp0=", "ZsKwQQ==", "FGMO", "GMKRw7o=", "QMO+OA==", "wrtaMQ==", "TMOUMA==", "J3jDuA==", "D8OnwqA=", "w7zCgcKv", "VnLCmw==", "Z8OJw4I=", "bADDng==", "ccKCZg==", "wrIUJA==", "XCHDow==", "w6DCsV8=", "ZsKafw==", "w5J7fg==", "M8OMwps=", "w7DDt8KG", "W8OYXw==", "EHDDhw==", "w63ChsKU", "O8Kiw4k=", "wrlxDA==", "wrnCkcON", "wqFfHg==", "wovDsMKh", "w67CmMKk", "w75Pwq8=", "wq/DnMKX", "SyhS", "wp1uOA==", "wr3Dt8KG", "DnI2", "OWEf", "w5PDisKX", "wr3CuRE=", "YBJu", "wrxgw58=", "wrEEIQ==", "Uy53", "V2/CjQ==", "ecOjw6Q=", "SMKjw5s=", "X8O5w7Y=", "RsK3w50=", "wpA+wro=", "aynDjQ==", "ccO5w6E=", "ezjCjw==", "BMOPJQ==", "w7FFwq8=", "QsOnw6Y=", "w5VRQQ==", "HmkA", "f8Oewr0=", "dsO7w78=", "w7PDrcKT", "w4vCr3E=", "X8O6w7s=", "CRTDqQ==", "VcO8w54=", "KmjDrA==", "w4dSfQ==", "BG7DpQ==", "bMOvw54=", "bi5F", "VDjDpQ==", "w6HCiFo=", "aMOYCA==", "w5fDqE8=", "CXbCpg==", "FMKwIg==", "w4BxSQ==", "QTbDow==", "J2si", "MsOxwpI=", "IsOdHA==", "wojDlsKP", "Hn44", "bMOQRg==", "dMKCWg==", "w7rDnF4=", "B8K5w58=", "WSjDpg==", "XsO5w5g=", "QTo7", "wqUZwoM=", "ecK1aA==", "esKDUA==", "woFCwrE=", "woISwos=", "dsODEw==", "McOrOQ==", "JVTDmA==", "XcKxbw==", "wqZZBg==", "OsKjFg==", "UQTDkg==", "woh3w4A=", "w5FXwpM=", "wpJAw7w=", "Ongr", "w41zwos=", "N8OGDw==", "w6DDicKj", "UQ0U", "CsKCTw==", "fTnDhA==", "w6TDqHA=", "AloY", "CV4e", "DsKJbQ==", "LyoG", "OFnChA==", "NFsh", "w596fA==", "w6FsYA==", "Pm/Chg==", "wrZ1Ew==", "wprDmcKo", "C3QW", "wo7CqDM=", "woYANg==", "wq3Dl8Ok", "wp7DlcKp", "csKXeA==", "wqVyHA==", "wptxw6k=", "IMOIwpE=", "HcKkw78=", "XzXDsg==", "Q8KAw48=", "QMOOWg==", "V3TClA==", "woY5Pw==", "K2jCng==", "c8OewoY=", "w5zDqVY=", "Al/Cmg==", "w7TDp8Kg", "wpjCoiU=", "G8ONAA==", "w7rCjMKO", "RSjDsg==", "esODbg==", "EWcq", "NsK4BA==", "PcKeEQ==", "GcOpJw==", "cTpO", "wrzDl8Kv", "CcKSw7I=", "fhPDpw==", "wqcfLg==", "B8KiIQ==", "OcKQw78=", "SjHDug==", "w4vDvcKd", "wq8kGQ==", "HH8J", "DVbDsg==", "LXHDrA==", "WCpe", "N8OjGQ==", "MVrDjA==", "ZB/Dpg==", "w7xvwpE=", "WwjDvA==", "wo4cIQ==", "esOvEw==", "wpJRw7Y=", "TRNg", "wrZ0Ag==", "dcOLcQ==", "bsKAw6E=", "wqdoPg==", "XDrCgg==", "wosKPw==", "bwTDvw==", "XQAy", "wpAUwoU=", "dB4t", "wpFRNw==", "UMKwQQ==", "ecOlw48=", "w6TChMKP", "XxFP", "A8K5Pg==", "w5dbfg==", "woDCtcOn", "IE3Cqg==", "JUvCqg==", "HzYw", "ecKEaA==", "fQEi", "fQR3", "J8KsEQ==", "b8Ofw6U=", "MsK6Jg==", "w7bDsMKT", "wqxuwps=", "XxPCrg==", "JcKQbg==", "FsOtAw==", "RcOBw6U=", "YcOxUg==", "EnAz", "ci8a", "VcO9w6E=", "Qj7Dvg==", "YMKEeQ==", "wqLDiMKl", "w5xawoM=", "TMOow6k=", "eRjDpQ==", "DXjCgQ==", "wq87HA==", "w5jCrMKw", "YsKzVw==", "fcOrwq8=", "wpNxw40=", "BgIo", "YcOEw6Q=", "BsKkw7M=", "L1XDiQ==", "DMKeaQ==", "cT3DmA==", "WDtL", "HVQy", "YTzDow==", "TsOZw5A=", "wpLCnSI=", "Ri8m", "w4fDiU0=", "ah5R", "w4TCuEs=", "w6bDusKY", "dgDDow==", "RAx3", "w71XVg==", "X8Obwoo=", "wrfDi8Kd", "ZsO+w5o=", "cB9B", "BH4p", "USBR", "w4bDksKn", "dSXDmQ==", "YMKew4A=", "V8O9BQ==", "wooxGQ==", "VX/Csg==", "XsOEw6Y=", "wrofBg==", "wpUBBw==", "wq87Gg==", "w4HCo0E=", "wpnCrAw=", "asOGwok=", "wqTChyA=", "wr91KA==", "FsKSLg==", "w5LDrMK5", "UxTDqw==", "JCMb", "IlfDmg==", "a8ONYA==", "IMO/wqM=", "OsOMwoI=", "YnM7", "YcOhcA==", "ZgDDhw==", "fcOnwq8=", "QAJu", "METDqw==", "HMKYRQ==", "IsKBw4g=", "wq9Cw5Y=", "WsOZFw==", "wrZkw60=", "aTAu", "bzgc", "RcOPBw==", "wqhlMQ==", "eMOrw48=", "O8Kjw68=", "STbDjA==", "wqvDgsOf", "G8K0bw==", "DsKdfQ==", "w4HCgWY=", "bgHDvw==", "CXPDlg==", "woFJFQ==", "wqDDlcKF", "QADDtg==", "w7tkSQ==", "Vgo3", "BEUK", "wrN2DA==", "wrHDlcKk", "XMOiEQ==", "wq/CnCU=", "QcKUUw==", "ODRV", "wpJuwpc=", "w67DkXY=", "NMOwwr0=", "VD8w", "KG4V", "acOAwqg=", "LMKWKg==", "wrLDmsK7", "a8K3bw==", "w6nDlMKA", "Y8OJw4s=", "w7xjSQ==", "AMKOdg==", "ay9S", "woFUPg==", "DcKVbA==", "Q8ODw4Y=", "w6JkTw==", "wrx5Hg==", "wr/DhsKl", "wo9QMQ==", "bSXDrg==", "eMOrWA==", "GMKpw78=", "w6fDuns=", "wqnDuMKI", "I1rDug==", "IHsb", "wqJMHw==", "OMOdwoM=", "HW4u", "w6JFQQ==", "wrJHEg==", "wpZcw7U=", "wq1tGw==", "wol2wog=", "w6nCu0s=", "wpLDl8KP", "woPCusOl", "wr7CtMOG", "wofDgsO2", "wprCuys=", "cD7Dhg==", "BWMM", "GMKYPA==", "WMOOw44=", "w4VFXA==", "w7DDmk0=", "F8KDOg==", "wo8jCQ==", "bcKEw44=", "aCkH", "cV0v", "aMO9Dg==", "cMOjw5E=", "CiM0", "Sy0W", "dTPCug==", "FsOuwp4=", "BkAs", "ZnkQ", "w7oxw4I=", "WMOPw4w=", "wqvCvyI=", "SRbDow==", "YinCjQ==", "cz4p", "w6PCqsKV", "VgVq", "BCE2", "w5LDrV4=", "TcO2Jw==", "eyRA", "a8Ouw7o=", "J1jDog==", "QcO5w40=", "FkvDjA==", "GMKpLg==", "ZwTDsg==", "wqzCsMOJ", "YS7ClA==", "w4bCuk0=", "ZMOOIA==", "wo4fwpQ=", "S8K6Vg==", "QcObw6U=", "wq9DHQ==", "IXgZ", "FFwc", "wqhvOA==", "wqBnwrw=", "QsOfJg==", "NW8A", "RRPDow==", "VAIr", "D8Kaw4s=", "X8OcGQ==", "JGEU", "eMKTbg==", "Y8OYbA==", "XcKaRQ==", "FMOrAQ==", "fwjCoA==", "wqnDhMK7", "wqkVwq8=", "P8KUfQ==", "Yh7DpA==", "BAsm", "RMK2w50=", "PcOwKg==", "CcKbw6w=", "HsKWTw==", "eyrDmA==", "woDDi8KC", "A2fDjw==", "YRTDlg==", "UsOow64=", "LCsE", "wo4dOg==", "wphxwpE=", "woUcAA==", "wqMfAA==", "TMKAw4U=", "GsKDw7k=", "PTE8", "wrlPGA==", "wqPDn8OT", "ZcOBw60=", "wrjCuMOq", "W8Kmw5k=", "XMOaw7k=", "wqxzwpM=", "fhDCqg==", "QMO+w7E=", "DVgs", "w6lSwrg=", "VMOHw6g=", "P8Oowrg=", "w7zDqHk=", "wq4CAw==", "wqpTDw==", "bDpH", "QcOYw4M=", "SBkv", "worCicOp", "wo0hGQ==", "w5JgWA==", "YQ5g", "AsK+Xg==", "XMOEwoo=", "ZiAN", "IsKsBQ==", "w6PDpVw=", "wrrCjSY=", "TcK+w6M=", "wp/DkMKL", "fhwQ", "ZHcF", "VDXDqw==", "w7rDg8Kg", "w5pywpc=", "UH3Cqg==", "AMOJwpI=", "wpxwwrU=", "SsONwo0=", "Az8p", "U2fCnA==", "wrLDlcKB", "XSlH", "QcOhKA==", "LG7CnQ==", "w6LDlsKm", "w5hkYQ==", "wqvDi8OU", "wo7CqDE=", "fAvCgQ==", "G8Kzw7A=", "YVAg", "wo/CnSY=", "Dk7CgQ==", "RzzCmw==", "P8OdAA==", "wqFcDQ==", "K8KVSA==", "woVawp8=", "JnEi", "w67DmsKc", "w6JRTw==", "DMK9cA==", "aBhR", "Zi4W", "dhzDvw==", "RsO7wq4=", "ecOcw6E=", "JcOmwqY=", "EcKwVg==", "WsKXeg==", "Byo1", "ElYq", "BloJ", "XMO4Ew==", "wo5+w7g=", "Mkk8", "wqAhJw==", "bjjDuw==", "w7bCpsKR", "Z8O7aw==", "d3fCvw==", "wpbDpcOF", "ScK7w7I=", "CkfDjg==", "ecOafA==", "YMOBw4A=", "wo0dwq4=", "dsKWTQ==", "DcKQZA==", "IEvCpw==", "w7fDulQ=", "aXnCkg==", "woMpJg==", "fWQq", "NnPDkQ==", "USBV", "U2gZ", "RsKBZw==", "e8K/cg==", "WMK5w4s=", "wrFww5I=", "w5PDhHk=", "ZsOxwos=", "wp3DisKX", "w7DCmVg=", "w6x4Rg==", "LH4K", "O20W", "ZMOZw7U=", "PMKfaA==", "bRhn", "Izwv", "w4cfwqU=", "w4fCpG0=", "aBvDoA==", "RMKveA==", "QcOxSg==", "V8K7cw==", "J8KeQg==", "w4LDiX0=", "IsKSUQ==", "VQXDkw==", "LXMp", "IsKgw6w=", "TCU4", "ayl1", "w6TDksK+", "Zn0Q", "AHbDug==", "w7JSwpg=", "G8OpwoM=", "fS1h", "wrxxw4s=", "wogKAw==", "wpYvwqA=", "eWXCkw==", "U8Ofw70=", "e2sT", "woUBAw==", "w6LDjmw=", "a8OPw54=", "U8KHbw==", "HTA7", "wonDs8Kk", "BFQG", "w5PDolU=", "ciXDkA==", "NcOSwrg=", "fCTDow==", "woYuwpQ=", "alQl", "S8Kbw5U=", "woRaw7M=", "E34q", "O8KdJg==", "WAHDng==", "w6DCmnA=", "OkYH", "Y8KWRQ==", "w5VNwpk=", "I0HDpg==", "wrQSJA==", "aQ9P", "HcKBw6g=", "eQnDsA==", "wpAcOw==", "w5HDmsKC", "w5tWwrs=", "ecOcIQ==", "JcKvMA==", "bRh5", "cB0F", "VjTDgA==", "wptrw7s=", "WDnDrw==", "Rz09", "wpYdAA==", "wrpUwpM=", "DcKifg==", "wp/DusKm", "wqAoOg==", "a17Cmw==", "J2k1"];
// 解密函数
var $dbsm_0x4638 = function (_0x1e1b14, _0x23b316) {
    _0x1e1b14 = _0x1e1b14 - 0x0;
    var _0x4638d3 = $dbsm_0x23b3[_0x1e1b14];
    if ($dbsm_0x4638['lIzlCZ'] === undefined) {
        (function () {
            var _0x4b121c;
            try {
                var _0x1d5b59 = Function('return\x20(function()\x20' + '{}.constructor(\x22return\x20this\x22)(\x20)' + ');');
                _0x4b121c = _0x1d5b59();
            } catch (_0x4f5869) {
                _0x4b121c = window;
            }
            var _0x55f54d = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
            _0x4b121c['atob'] || (_0x4b121c['atob'] = function (_0x2337bc) {
                    var _0x94736f = String(_0x2337bc)['replace'](/=+$/, '');
                    var _0x5e548f = '';
                    for (var _0x588d26 = 0x0, _0x5d3f20, _0x558d8e, _0x49832a = 0x0; _0x558d8e = _0x94736f['charAt'](_0x49832a++); ~_0x558d8e && (_0x5d3f20 = _0x588d26 % 0x4 ? _0x5d3f20 * 0x40 + _0x558d8e : _0x558d8e,
                    _0x588d26++ % 0x4) ? _0x5e548f += String['fromCharCode'](0xff & _0x5d3f20 >> (-0x2 * _0x588d26 & 0x6)) : 0x0) {
                        _0x558d8e = _0x55f54d['indexOf'](_0x558d8e);
                    }
                    return _0x5e548f;
                }
            );
        }());
        var _0x2ef3c5 = function (_0x49a1eb, _0x27f9fb) {
            var _0x26a837 = [], _0x90ed46 = 0x0, _0x1e184c, _0x229955 = '', _0x28a13b = '';
            _0x49a1eb = atob(_0x49a1eb);
            for (var _0x4237c8 = 0x0, _0x18c69a = _0x49a1eb['length']; _0x4237c8 < _0x18c69a; _0x4237c8++) {
                _0x28a13b += '%' + ('00' + _0x49a1eb['charCodeAt'](_0x4237c8)['toString'](0x10))['slice'](-0x2);
            }
            _0x49a1eb = decodeURIComponent(_0x28a13b);
            var _0x2c4f5b;
            for (_0x2c4f5b = 0x0; _0x2c4f5b < 0x100; _0x2c4f5b++) {
                _0x26a837[_0x2c4f5b] = _0x2c4f5b;
            }
            for (_0x2c4f5b = 0x0; _0x2c4f5b < 0x100; _0x2c4f5b++) {
                _0x90ed46 = (_0x90ed46 + _0x26a837[_0x2c4f5b] + _0x27f9fb['charCodeAt'](_0x2c4f5b % _0x27f9fb['length'])) % 0x100;
                _0x1e184c = _0x26a837[_0x2c4f5b];
                _0x26a837[_0x2c4f5b] = _0x26a837[_0x90ed46];
                _0x26a837[_0x90ed46] = _0x1e184c;
            }
            _0x2c4f5b = 0x0;
            _0x90ed46 = 0x0;
            for (var _0x4fe42c = 0x0; _0x4fe42c < _0x49a1eb['length']; _0x4fe42c++) {
                _0x2c4f5b = (_0x2c4f5b + 0x1) % 0x100;
                _0x90ed46 = (_0x90ed46 + _0x26a837[_0x2c4f5b]) % 0x100;
                _0x1e184c = _0x26a837[_0x2c4f5b];
                _0x26a837[_0x2c4f5b] = _0x26a837[_0x90ed46];
                _0x26a837[_0x90ed46] = _0x1e184c;
                _0x229955 += String['fromCharCode'](_0x49a1eb['charCodeAt'](_0x4fe42c) ^ _0x26a837[(_0x26a837[_0x2c4f5b] + _0x26a837[_0x90ed46]) % 0x100]);
            }
            return _0x229955;
        };
        $dbsm_0x4638['UYyCMO'] = _0x2ef3c5;
        $dbsm_0x4638['nMtFyB'] = {};
        $dbsm_0x4638['lIzlCZ'] = !![];
    }
    var _0x57b28f = $dbsm_0x4638['nMtFyB'][_0x1e1b14];
    if (_0x57b28f === undefined) {
        if ($dbsm_0x4638['DwWKuR'] === undefined) {
            var _0x9e4186 = function (_0x3712d5) {
                this['kHsRXo'] = _0x3712d5;
                this['nWOEyU'] = [0x1, 0x0, 0x0];
                this['tpblbK'] = function () {
                    return 'newState';
                }
                ;
                this['lAcsth'] = '\x5cw+\x20*\x5c(\x5c)\x20*{\x5cw+\x20*';
                this['foeeRg'] = '[\x27|\x22].+[\x27|\x22];?\x20*}';
            };
            _0x9e4186['prototype']['RuyyZP'] = function () {
                var _0x20d28 = new RegExp(this['lAcsth'] + this['foeeRg']);
                var _0x5e0e5f = true ? --this['nWOEyU'][0x1] : --this['nWOEyU'][0x0];
                return this['XVTLWU'](_0x5e0e5f);
            };
            _0x9e4186['prototype']['XVTLWU'] = function (_0x3ab8dc) {
                if (!Boolean(~_0x3ab8dc)) {
                    return _0x3ab8dc;
                }
                return this['HxFvMA'](this['kHsRXo']);
            }
            ;
            _0x9e4186['prototype']['HxFvMA'] = function (_0x13037d) {
                for (var _0x3bdd37 = 0x0, _0x49b603 = this['nWOEyU']['length']; _0x3bdd37 < _0x49b603; _0x3bdd37++) {
                    this['nWOEyU']['push'](Math['round'](Math['random']()));
                    _0x49b603 = this['nWOEyU']['length'];
                }
                return _0x13037d(this['nWOEyU'][0x0]);
            }
            ;
            new _0x9e4186($dbsm_0x4638)['RuyyZP']();
            $dbsm_0x4638['DwWKuR'] = !![];
        }
        _0x4638d3 = $dbsm_0x4638['UYyCMO'](_0x4638d3, _0x23b316);
        $dbsm_0x4638['nMtFyB'][_0x1e1b14] = _0x4638d3;
    } else {
        _0x4638d3 = _0x57b28f;
    }
    return _0x4638d3;
};
// 解密函数还原字符串规则
traverse(ast, {
    CallExpression(path) {  // 遍历 CallExpression 节点
        // callee 属性为 Identifier 类型
        // 且 name 属性为 $dbsm_0x4638 解密函数名
        if (types.isIdentifier(path.node.callee, {name: '$dbsm_0x4638'})) {
            console.log('遍历到的节点: ', path + '')
            // 取出对应的参数
            // 例: $dbsm_0x4638('\x30\x78\x32\x39', '\x72\x69\x63\x50')
            let callArg = path.node.arguments;  // 例 ['\x30\x78\x32\x39', '\x72\x69\x63\x50']
            let arg1 = callArg[0].type;  // 例 '\x30\x78\x32\x39'
            let arg2 = callArg[1].type;  // 例 '\x72\x69\x63\x50'

            // 将对应的参数取出后, 拿到 $dbsm_0x4638 解密函数执行
            let result = $dbsm_0x4638(callArg[0].value, callArg[1].value)

            // 将对应的节点替换成 解密函数执行后的结果
            // 例
            //    将节点:  $dbsm_0x4638('\x30\x78\x33\x66\x36', '\x68\x32\x25\x5e')
            //    替换成:  "hei"
            path.replaceWith(types.valueToNode(result));
            console.log('替换后的节点: ', path + '')
            console.log('==============================');
        }
    }
})

///

js_code = generator(ast).code  // 将ast节点转换成js代码

// 写入（路径记得改）
fs.writeFileSync('New_demo.js', js_code, {
    encoding: 'utf-8'
})

解析前的代码

解析后的代码

ASCII 编码字符串还原

还原思路在 1. js混淆-源码乱码 中有提到

// ASCII 码还原
traverse(ast, {
    StringLiteral(path) {
        if (path.node.extra) {
            console.log('ASCII码替换前: ', path.node.extra);
            path.node.extra.raw = `'${path.node.extra.rawValue}'`
            console.log('ASCII码替换后: ', path.node.extra);
            console.log('============================================================');
        }
    }
})

效果

字符串相加

demo.js

'a' + 'b' + 'c' + 'd';
'e' + 'f';

AST.js

// 字符串相加
function strConcat(path) {
    for (let i = 0; i <= 2; i++) {
        let node = path.node
        // left 节点为 StringLiteral 类型
        // right 节点为 StringLiteral 类型
        // operator 操作符属性为字符串 +
        if (types.isStringLiteral(node.left) && types.isStringLiteral(node.right) && node.operator === '+') {
            // 例 'e' + 'f'
            console.log('字符串相加前: ', path + '');

            // 例 'e' + 'f'
            let result = path.node.left.value + path.node.right.value;

            // 例: 'e' + 'f'
            // 替换成: 'ef'
            path.replaceWith(types.valueToNode(result));
            console.log('字符串相加后:  ', path + '');
            console.log('============================================================');
        } else {
            // 递归是针对多个字符串相加的
            // 例当前遍历到的节点: 'a' + 'b' + 'c' + 'd'
            // 这个节点在上面是不会处理的
            // path 对象的 traverse 方法是从当前节点继续遍历
            // 传入 strConcat 方法的节点就为:  'a' + 'b' + 'c' + 'd'
            // 调用过后还是会再次进入到 path.traverse 因为还是会有多个字符串相加
            // 上一次传入的节点被处理过了
            // 所以这一次传入的节点代码就为 'ab' + 'c' + 'd'
            // 一直递归到节点为 'abc' + 'd' 就会停止递归
            // 'abc' + 'd' 在 for 循环中会二次处理 （可以试着for循环只遍历一次看看效果
            path.traverse({
                BinaryExpression(path_) {
                    strConcat(path_)
                }
            })
        }
    }
}

traverse(ast, {
    BinaryExpression(path) {  // 遍历 BinaryExpression 节点
        strConcat(path)
    }
})

效果

花指令(对象)

demo.js

let obj = {};
obj['StringLiteral'] = 'abc';
obj['BinaryExpression'] = 'abc' + 'def';
obj['funcCallExpression1'] = function (a, b){
    return a(b);
}
obj['funcCallExpression2'] = function (a){
    return a();
}
obj['funcBinaryExpression'] = function(a, b){
    return a + b
}

let c = obj;
let d = c['StringLiteral'];
let e = c['BinaryExpression'];
function demo(){}
let f = c['funcCallExpression1'](demo, '123');
let g = c['funcCallExpression2'](demo);
let h = c['funcBinaryExpression']('1', '2');

AST.js

// 花指令
traverse(ast, {
    VariableDeclarator(path){  // 遍历 VariableDeclarator 节点
        if (types.isObjectExpression(path.node.init)){  // init 类型为 ObjectExpression 类型
            let objName = path.node.id.name;  // 获取对应的标识符
            let objBinding = path.scope.getBinding(objName);  // 获取标识符对应的引用
            let objRefer = objBinding.referencePaths;  // 获取标识符引用对应的数组
            let newObj = {}
            // 将给对象属性赋值的所有变量存入 newObj
            for (const refer in objRefer){  // refer 为索引值从 0 开始
                // objRefer[refer] 为 obj
                // objRefer[refer].parentPath 为 obj['str']
                // objRefer[refer].parentPath.parentPath 为 obj['str'] = 'abc'
                let grandPath = objRefer[refer].parentPath.parentPath;  // 获取该节点的整段代码

                // 该节点的类型为 AssignmentExpression 类型
                // 节点中 left 属性的类型为 MemberExpression 类型
                if (grandPath.isAssignmentExpression() && grandPath.get('left').isMemberExpression()){
                    // obj['str'] 中的 str 字符串
                    let key = grandPath.node.left.property.value;  // 获取 .property.value 的属性，作为新声明对象中的key
                    newObj[key] = grandPath.node.right;  // right为该属性对应的 node 节点，直接存入 newObj 对象即可
                }
            }


            for (const refer in objRefer.reverse()){
                let grandPath = objRefer[refer].parentPath;
                if (grandPath.isVariableDeclarator()){  // 该节点的类型应为 VariableDeclarator
                    // 例: c = obj
                    let identName = grandPath.node.id.name;  // 获取标识符中对应的 name 属性 (例中的 c）

                    // 例:
                    // let d = c['StringLiteral'];
                    // let e = c['BinaryExpression'];
                    // let f = c['funcCallExpression1'](demo, '123');
                    // let g = c['funcCallExpression2'](demo);
                    // let h = c['funcBinaryExpression']('1' + '2');
                    let identBinding = grandPath.scope.getBinding(identName);  // 获取标识符 c 对应的引用

                    // 例:
                    // [c, c, c, c, c]
                    let identRefer = identBinding.referencePaths;  // 获取标识符引用对应的数组

                    // 字符串花指令
                    for (const idenKey in identRefer) {
                        // identRefer[idenKey].parentPath
                        // c['StringLiteral']
                        // c['BinaryExpression']
                        // c['funcCallExpression1']
                        // c['funcCallExpression2']
                        // c['funcBinaryExpression']
                        let key = identRefer[idenKey].parentPath.node.property.value;  // 获取对应的属性值

                        // 获取 newObj[key]  // obj[属性值]
                        // newObj[key] 的属性值为 StringLiteral 或 BinaryExpression 节点
                        // StringLiteral 为字符串 'abc';
                        // BinaryExpression 为二项式 'abc' + 'def';
                        if (types.isStringLiteral(newObj[key]) || types.isBinaryExpression(newObj[key])){  // 还原字符串
                            console.log('花指令字符串替换前: ', identRefer[idenKey].parentPath + '')
                            identRefer[idenKey].parentPath.replaceWith(newObj[key])  // 获取 obj 中对应的 StringLiteral 节点
                            console.log('花指令字符串替换后: ', identRefer[idenKey].parentPath + '')
                            console.log('====================================')
                        }
                    }

                    // 数组翻转，从后向前遍历
                    for (const idenKey in identRefer.reverse()) {
                        // MemberExpression
                        // 为 let d = c['StringLiteral']; 中的 c['StringLiteral']
                        if (identRefer[idenKey].parentPath.isMemberExpression()){
                            // 获取对应调用的属性值 c['StringLiteral'] 中的 'StringLiteral'
                            let key = identRefer[idenKey].parentPath.node.property.value;

                            // 如果 newObj 对应属性值为 FunctionExpression 类型
                            if (types.isFunctionExpression(newObj[key])){
                                /*
                                function (){...}
                                 */

                                // 拿到 return 语句
                                let retState = newObj[key].body.body[0].argument;

                                // 二元运算还原
                                // 例: return a + b
                                if (types.isBinaryExpression(retState)){
                                    let operator = retState.operator;  // 拿到操作符 例: +

                                    // 拿到参数数组
                                    // c['funcBinaryExpression']('1', '2'); 中的 ['1', '2']
                                    let Arg = identRefer[idenKey].parentPath.parentPath.node.arguments;
                                    console.log('花指令二元替换前:  ', identRefer[idenKey].parentPath.parentPath + '')

                                    // replaceWith 将当前的节点替换
                                    // c['funcBinaryExpression']('1', '2');
                                    // 替换成
                                    // '1' + '2'
                                    identRefer[idenKey].parentPath.parentPath.replaceWith(types.binaryExpression(operator, Arg[0], Arg[1]));
                                    console.log('花指令二元替换后:  ', identRefer[idenKey].parentPath.parentPath + '')
                                    console.log('=========================')
                                }

                                // 函数调用还原
                                // 例： return a(b) / return a()
                                // 这两个的差别只有调用的参数，一个对应调用的参数为 2， 一个调用对应的参数为 1
                                // CallExpression
                                // 例: return a(b)
                                if (types.isCallExpression(retState)){
                                    // 获取该节点对应的参数
                                    // 例: c['funcCallExpression1'](demo, '123');
                                    // 中的
                                    // demo, '123'
                                    let Arg = identRefer[idenKey].parentPath.parentPath.node.arguments;
                                    console.log('花指令函数调用替换前:  ', identRefer[idenKey].parentPath.parentPath + '')

                                    // c['funcCallExpression'](demo, '123');
                                    // 替换成
                                    // demo('123');
                                    identRefer[idenKey].parentPath.parentPath.replaceWith(types.callExpression(types.identifier(Arg[0].name), Arg.slice(1)));

                                    console.log('花指令函数调用替换后:  ', identRefer[idenKey].parentPath.parentPath + '')
                                    console.log('=========================')
                                }

                            }
                        }
                    }
                }
            }
            // path.stop()
        }
    }
})

还原前

还原后

剔除无用代码

虚假 if

demo.js

if ('a' === 'a'){
    console.log("'a' === 'a' true");
}else{
    console.log("'a' === 'a' false");
}

if ('a' !== 'a'){
    console.log("'a' !== 'a' true");
}else{
    console.log("'a' !== 'a' false");
}

'a' === 'a' ? console.log("'a' === 'a' true") : console.log("'a' === 'a' false")
'a' !== 'a' ? console.log("'a' !== 'a' true") : console.log("'a' !== 'a' false")

AST.js

// 虚假 if
traverse(ast, {
    // IfStatement 为if判断语句
    // ConditionalExpression 为三元表达式
    "IfStatement|ConditionalExpression"(path){
        // 该节点中的判断条件应该为 二元表达式
        // left 节点应该为 StringLiteral 类型
        // right 节点应该为 StringLiteral 类型
        if(path.get('test').isBinaryExpression() && path.get('test.left').isStringLiteral() && path.get('test.right').isStringLiteral()){
            // 取出判断条件中对应的值
            // 例:  if ('a' === 'a') {  console.log("'a' === 'a' true");} else {  console.log("'a' === 'a' false");}

            let operator = path.node.test.operator;  // 取出操作符 例: ===
            let leftString = path.node.test.left.value;  // 左边的字符串 例: 'a'
            let rightString = path.node.test.right.value;  // 右边的字符串 例: === 'a'

            // 生成 eval 可判断的字符串
            let vmRun = `"${leftString}"  ${operator} "${rightString}"`;  // 例: 'a' === 'a'
            let result = eval(vmRun);
            console.log('虚假 if:  ' + (path + '').replaceAll('\n', ''))

            // 取出 if 与 else 中的代码块
            // path.node.consequent.body 为 if(){}else{}; 形式取值
            // path.node.consequent.arguments 为 statement ? true : false; 形式取值
            let ifTrue = path.node.consequent.body || path.node.consequent.arguments;
            let elFalse = path.node.alternate.body || path.node.alternate.arguments;

            // 判断 result 的执行结果，替换对应的代码块 if 或 else
            result ? path.replaceWithMultiple(ifTrue) : path.replaceWithMultiple(elFalse)
        }
    }
})

剔除无引用代码

// 剔除无引用代码
const refObj = {}
traverse(ast, {
    Identifier(path) {
        let name = path.node.name;
        if (!refObj[name]) {
            refObj[name] = '1';
            let binding = path.scope.getBinding(name);
            let refPath = binding && binding.referencePaths;
            if (refPath && refPath.length === 0) {
                path.parentPath.parentPath.isVariableDeclaration() && (console.log('删除的无用代码:  ', path.parentPath + ''), path.parentPath.remove())
            }
        }
    }
})

剔除无引用的对象

// 无引用的对象
traverse(ast, {
    VariableDeclarator(path) {  // 遍历 VariableDeclarator 节点
        if (types.isObjectExpression(path.node.init)) {  // init 类型为 ObjectExpression 类型
            let objName = path.node.id.name;  // 获取对应的标识符
            let objBinding = path.scope.getBinding(objName);  // 获取标识符对应的引用
            let objRefer = objBinding && objBinding.referencePaths;  // 获取标识符引用对应的数组
            let quoteObj = false;
            for (const index in objRefer) {
                let grandPath = objRefer[index].parentPath.parentPath;
                if (grandPath.isAssignmentExpression() && grandPath.get('left').isMemberExpression()) {
                    if (grandPath.get('left.object').isIdentifier() && grandPath.node.left.object.name === objName) {
                        console.log(grandPath + '');
                        console.log('==============================')
                    } else {
                        quoteObj = true
                    }
                }
            }
            if (!quoteObj) {
                for (const index in objRefer) {
                    let grandPath = objRefer[index].parentPath.parentPath;
                    grandPath.remove();
                }
            }

        }
    }
})

数值还原

// 数值还原
traverse(ast, {
    NumericLiteral(path){
        console.log('替换前: ', path.node.extra);
        delete path.node.extra.raw;
        console.log('替换后: ', path.node.extra);
        console.log('==============================');
    }
})

switch 还原

// 还原 switch
traverse(ast, {
    WhileStatement(path){
        if (path.node.test.prefix && path.get('body').isBlockStatement() && types.isSwitchStatement(path.node.body.body[0])){
            // 获取同级节点
            let sibling = path.getSibling(0)
            let whileIdx = (sibling.node.declarations[0].init.callee.object.value).split('|')
            let idxObj = {}
            let caseIdx = path.node.body.body[0].cases;
            for (const index in caseIdx){
                let key = caseIdx[index].test.value;
                idxObj[key] = caseIdx[index].consequent[0];
            }
            let newArray = []
            for (const index in whileIdx){
                newArray.push(idxObj[whileIdx[index]])
            }
            path.replaceWithMultiple(newArray);

            // 删除同级节点
            while(path.key--){
                path.getSibling(path.key).remove();
            }
        }
    }
})

还原前

还原后

完整的 AST 代码

代码

// 安装 babel 库:  npm install @babel/core
const fs = require('fs')

const traverse = require('@babel/traverse').default  // 用于遍历 AST 节点
const types = require('@babel/types')  // 用于判断， 生成 AST 节点

const parser = require('@babel/parser')  // 将js代码解析成ast节点
const generator = require('@babel/generator').default  // 将ast节点转换成js代码

// 读取(路径记得改)
const ast_code = fs.readFileSync('demo.js', {
    encoding: 'utf-8'
})

let ast = parser.parse(ast_code)  // 将js代码解析成ast语法树

// 这里插入解析规则
///

// 解密函数中需要的 atob 函数
global['atob'] = require('atob');  // npm install atob
// 解密函数依赖的大数组
var $dbsm_0x23b3 = ["QjjDhA==", "IyQb", "552u776q5L6D", "eCvDoA==", "EHwT", "wpdVw6I=", "RArDvA==", "Hk8D", "MUvCnA==", "wotlw5k=", "w7xTwrU=", "wrLCvT0=", "w5LCvUc=", "w6hIwrY=", "w716Rw==", "L8OzwpI=", "MlMA", "Gm8r", "WcKVw44=", "W8KKw5s=", "w6bCgUE=", "TSnDpg==", "aEXCuw==", "HMOzwrc=", "wqs3Bg==", "KHsW", "AcOtwp4=", "N8KeIA==", "cifCig==", "wrBZw7M=", "AMKtw4g=", "FMOkwqA=", "WwEa", "DjzDqA==", "wo7CnAs=", "wpdoAQ==", "JsOfwp0=", "J8KRKA==", "ZsOCw58=", "wojCiAQ=", "w7vCuMKR", "ATY3", "ZyfCvQ==", "dCJD", "UMKpVg==", "O2US", "wqE3LA==", "SMOtwqk=", "w5PCh8Ki", "bMKyaA==", "S8OjEw==", "AcKGw68=", "wpVFw5M=", "fDvDpw==", "w7Brwqk=", "dGYb", "eC45", "AsOGwrE=", "w7fDhcKz", "YATDlA==", "DsK6w6A=", "wrNLw7U=", "biAN", "TxVF", "VzJ2", "wr3CrRc=", "wr0WEQ==", "YAvDrw==", "wqtZNg==", "K0QC", "Y8KBw6c=", "Q8KEw6E=", "wrUhKQ==", "CXfDjA==", "G34/", "esOcTQ==", "wpFiDA==", "w4xCaQ==", "Blo7", "w6vDvcKT", "eyFl", "BE8K", "w6HCvUs=", "wplqw6M=", "wqdOw5Y=", "wqzDr8KW", "XsKdcw==", "VMKsag==", 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"U2fCnA==", "wrLDlcKB", "XSlH", "QcOhKA==", "LG7CnQ==", "w6LDlsKm", "w5hkYQ==", "wqvDi8OU", "wo7CqDE=", "fAvCgQ==", "G8Kzw7A=", "YVAg", "wo/CnSY=", "Dk7CgQ==", "RzzCmw==", "P8OdAA==", "wqFcDQ==", "K8KVSA==", "woVawp8=", "JnEi", "w67DmsKc", "w6JRTw==", "DMK9cA==", "aBhR", "Zi4W", "dhzDvw==", "RsO7wq4=", "ecOcw6E=", "JcOmwqY=", "EcKwVg==", "WsKXeg==", "Byo1", "ElYq", "BloJ", "XMO4Ew==", "wo5+w7g=", "Mkk8", "wqAhJw==", "bjjDuw==", "w7bCpsKR", "Z8O7aw==", "d3fCvw==", "wpbDpcOF", "ScK7w7I=", "CkfDjg==", "ecOafA==", "YMOBw4A=", "wo0dwq4=", "dsKWTQ==", "DcKQZA==", "IEvCpw==", "w7fDulQ=", "aXnCkg==", "woMpJg==", "fWQq", "NnPDkQ==", "USBV", "U2gZ", "RsKBZw==", "e8K/cg==", "WMK5w4s=", "wrFww5I=", "w5PDhHk=", "ZsOxwos=", "wp3DisKX", "w7DCmVg=", "w6x4Rg==", "LH4K", "O20W", "ZMOZw7U=", "PMKfaA==", "bRhn", "Izwv", "w4cfwqU=", "w4fCpG0=", "aBvDoA==", "RMKveA==", "QcOxSg==", "V8K7cw==", "J8KeQg==", "w4LDiX0=", "IsKSUQ==", "VQXDkw==", "LXMp", "IsKgw6w=", "TCU4", "ayl1", "w6TDksK+", "Zn0Q", "AHbDug==", "w7JSwpg=", "G8OpwoM=", "fS1h", "wrxxw4s=", "wogKAw==", "wpYvwqA=", "eWXCkw==", "U8Ofw70=", "e2sT", "woUBAw==", "w6LDjmw=", "a8OPw54=", "U8KHbw==", "HTA7", "wonDs8Kk", "BFQG", "w5PDolU=", "ciXDkA==", "NcOSwrg=", "fCTDow==", "woYuwpQ=", "alQl", "S8Kbw5U=", "woRaw7M=", "E34q", "O8KdJg==", "WAHDng==", "w6DCmnA=", "OkYH", "Y8KWRQ==", "w5VNwpk=", "I0HDpg==", "wrQSJA==", "aQ9P", "HcKBw6g=", "eQnDsA==", "wpAcOw==", "w5HDmsKC", "w5tWwrs=", "ecOcIQ==", "JcKvMA==", "bRh5", "cB0F", "VjTDgA==", "wptrw7s=", "WDnDrw==", "Rz09", "wpYdAA==", "wrpUwpM=", "DcKifg==", "wp/DusKm", "wqAoOg==", "a17Cmw==", "J2k1"];
// 解密函数
var $dbsm_0x4638 = function (_0x1e1b14, _0x23b316) {
    _0x1e1b14 = _0x1e1b14 - 0x0;
    var _0x4638d3 = $dbsm_0x23b3[_0x1e1b14];
    if ($dbsm_0x4638['lIzlCZ'] === undefined) {
        (function () {
            var _0x4b121c;
            try {
                var _0x1d5b59 = Function('return\x20(function()\x20' + '{}.constructor(\x22return\x20this\x22)(\x20)' + ');');
                _0x4b121c = _0x1d5b59();
            } catch (_0x4f5869) {
                _0x4b121c = window;
            }
            var _0x55f54d = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
            _0x4b121c['atob'] || (_0x4b121c['atob'] = function (_0x2337bc) {
                    var _0x94736f = String(_0x2337bc)['replace'](/=+$/, '');
                    var _0x5e548f = '';
                    for (var _0x588d26 = 0x0, _0x5d3f20, _0x558d8e, _0x49832a = 0x0; _0x558d8e = _0x94736f['charAt'](_0x49832a++); ~_0x558d8e && (_0x5d3f20 = _0x588d26 % 0x4 ? _0x5d3f20 * 0x40 + _0x558d8e : _0x558d8e,
                    _0x588d26++ % 0x4) ? _0x5e548f += String['fromCharCode'](0xff & _0x5d3f20 >> (-0x2 * _0x588d26 & 0x6)) : 0x0) {
                        _0x558d8e = _0x55f54d['indexOf'](_0x558d8e);
                    }
                    return _0x5e548f;
                }
            );
        }());
        var _0x2ef3c5 = function (_0x49a1eb, _0x27f9fb) {
            var _0x26a837 = [], _0x90ed46 = 0x0, _0x1e184c, _0x229955 = '', _0x28a13b = '';
            _0x49a1eb = atob(_0x49a1eb);
            for (var _0x4237c8 = 0x0, _0x18c69a = _0x49a1eb['length']; _0x4237c8 < _0x18c69a; _0x4237c8++) {
                _0x28a13b += '%' + ('00' + _0x49a1eb['charCodeAt'](_0x4237c8)['toString'](0x10))['slice'](-0x2);
            }
            _0x49a1eb = decodeURIComponent(_0x28a13b);
            var _0x2c4f5b;
            for (_0x2c4f5b = 0x0; _0x2c4f5b < 0x100; _0x2c4f5b++) {
                _0x26a837[_0x2c4f5b] = _0x2c4f5b;
            }
            for (_0x2c4f5b = 0x0; _0x2c4f5b < 0x100; _0x2c4f5b++) {
                _0x90ed46 = (_0x90ed46 + _0x26a837[_0x2c4f5b] + _0x27f9fb['charCodeAt'](_0x2c4f5b % _0x27f9fb['length'])) % 0x100;
                _0x1e184c = _0x26a837[_0x2c4f5b];
                _0x26a837[_0x2c4f5b] = _0x26a837[_0x90ed46];
                _0x26a837[_0x90ed46] = _0x1e184c;
            }
            _0x2c4f5b = 0x0;
            _0x90ed46 = 0x0;
            for (var _0x4fe42c = 0x0; _0x4fe42c < _0x49a1eb['length']; _0x4fe42c++) {
                _0x2c4f5b = (_0x2c4f5b + 0x1) % 0x100;
                _0x90ed46 = (_0x90ed46 + _0x26a837[_0x2c4f5b]) % 0x100;
                _0x1e184c = _0x26a837[_0x2c4f5b];
                _0x26a837[_0x2c4f5b] = _0x26a837[_0x90ed46];
                _0x26a837[_0x90ed46] = _0x1e184c;
                _0x229955 += String['fromCharCode'](_0x49a1eb['charCodeAt'](_0x4fe42c) ^ _0x26a837[(_0x26a837[_0x2c4f5b] + _0x26a837[_0x90ed46]) % 0x100]);
            }
            return _0x229955;
        };
        $dbsm_0x4638['UYyCMO'] = _0x2ef3c5;
        $dbsm_0x4638['nMtFyB'] = {};
        $dbsm_0x4638['lIzlCZ'] = !![];
    }
    var _0x57b28f = $dbsm_0x4638['nMtFyB'][_0x1e1b14];
    if (_0x57b28f === undefined) {
        if ($dbsm_0x4638['DwWKuR'] === undefined) {
            var _0x9e4186 = function (_0x3712d5) {
                this['kHsRXo'] = _0x3712d5;
                this['nWOEyU'] = [0x1, 0x0, 0x0];
                this['tpblbK'] = function () {
                    return 'newState';
                }
                ;
                this['lAcsth'] = '\x5cw+\x20*\x5c(\x5c)\x20*{\x5cw+\x20*';
                this['foeeRg'] = '[\x27|\x22].+[\x27|\x22];?\x20*}';
            };
            _0x9e4186['prototype']['RuyyZP'] = function () {
                var _0x20d28 = new RegExp(this['lAcsth'] + this['foeeRg']);
                var _0x5e0e5f = true ? --this['nWOEyU'][0x1] : --this['nWOEyU'][0x0];
                return this['XVTLWU'](_0x5e0e5f);
            };
            _0x9e4186['prototype']['XVTLWU'] = function (_0x3ab8dc) {
                if (!Boolean(~_0x3ab8dc)) {
                    return _0x3ab8dc;
                }
                return this['HxFvMA'](this['kHsRXo']);
            }
            ;
            _0x9e4186['prototype']['HxFvMA'] = function (_0x13037d) {
                for (var _0x3bdd37 = 0x0, _0x49b603 = this['nWOEyU']['length']; _0x3bdd37 < _0x49b603; _0x3bdd37++) {
                    this['nWOEyU']['push'](Math['round'](Math['random']()));
                    _0x49b603 = this['nWOEyU']['length'];
                }
                return _0x13037d(this['nWOEyU'][0x0]);
            }
            ;
            new _0x9e4186($dbsm_0x4638)['RuyyZP']();
            $dbsm_0x4638['DwWKuR'] = !![];
        }
        _0x4638d3 = $dbsm_0x4638['UYyCMO'](_0x4638d3, _0x23b316);
        $dbsm_0x4638['nMtFyB'][_0x1e1b14] = _0x4638d3;
    } else {
        _0x4638d3 = _0x57b28f;
    }
    return _0x4638d3;
};
// 解密函数还原字符串规则
traverse(ast, {
    CallExpression(path) {  // 遍历 CallExpression 节点
        // callee 属性为 Identifier 类型
        // 且 name 属性为 $dbsm_0x4638 解密函数名
        if (types.isIdentifier(path.node.callee, {name: '$dbsm_0x4638'})) {

            // 取出对应的参数
            // 例: $dbsm_0x4638('\x30\x78\x32\x39', '\x72\x69\x63\x50')
            let callArg = path.node.arguments;  // 例 ['\x30\x78\x32\x39', '\x72\x69\x63\x50']
            let arg1 = callArg[0].type;  // 例 '\x30\x78\x32\x39'
            let arg2 = callArg[1].type;  // 例 '\x72\x69\x63\x50'

            // 将对应的参数取出后, 拿到 $dbsm_0x4638 解密函数执行
            let result = $dbsm_0x4638(callArg[0].value, callArg[1].value)

            // 将对应的节点替换成 解密函数执行后的结果
            // 例
            //    将节点:  $dbsm_0x4638('\x30\x78\x33\x66\x36', '\x68\x32\x25\x5e')
            //    替换成:  "hei"
            console.log('解密函数执行前的节点: ', path + '')
            path.replaceWith(types.valueToNode(result));
            console.log('解密函数还原后的节点: ', path + '')
            console.log('==============================');
        }
    }
})

// ASCII 码还原
traverse(ast, {
    StringLiteral(path) {
        if (path.node.extra) {
            console.log('ASCII码替换前: ', path.node.extra);
            path.node.extra.raw = `'${path.node.extra.rawValue}'`
            console.log('ASCII码替换后: ', path.node.extra);
            console.log('============================================================');
        }
    }
})


// 字符串相加
function strConcat(path) {
    for (let i = 0; i <= 2; i++) {
        let node = path.node
        // left 节点为 StringLiteral 类型
        // right 节点为 StringLiteral 类型
        // operator 操作符属性为字符串 +
        if (types.isStringLiteral(node.left) && types.isStringLiteral(node.right) && node.operator === '+') {
            // 例 'e' + 'f'
            console.log('字符串相加前: ', path + '');

            // 例 'e' + 'f'
            let result = path.node.left.value + path.node.right.value;

            // 例: 'e' + 'f'
            // 替换成: 'ef'
            path.replaceWith(types.valueToNode(result));
            console.log('字符串相加后:  ', path + '');
            console.log('============================================================');
        } else {
            // 递归是针对多个字符串相加的
            // 例当前遍历到的节点: 'a' + 'b' + 'c' + 'd'
            // 这个节点在上面是不会处理的
            // path 对象的 traverse 方法是从当前节点继续遍历
            // 传入 strConcat 方法的节点就为:  'a' + 'b' + 'c' + 'd'
            // 调用过后还是会再次进入到 path.traverse 因为还是会有多个字符串相加
            // 上一次传入的节点被处理过了
            // 所以这一次传入的节点代码就为 'ab' + 'c' + 'd'
            // 一直递归到节点为 'abc' + 'd' 就会停止递归
            // 'abc' + 'd' 在 for 循环中会二次处理 （可以试着for循环只遍历一次看看效果
            path.traverse({
                BinaryExpression(path_) {
                    strConcat(path_)
                }
            })
        }
    }
}

traverse(ast, {
    BinaryExpression(path) {  // 遍历 BinaryExpression 节点
        strConcat(path)
    }
})


// 花指令
traverse(ast, {
    VariableDeclarator(path){  // 遍历 VariableDeclarator 节点
        if (types.isObjectExpression(path.node.init)){  // init 类型为 ObjectExpression 类型
            let objName = path.node.id.name;  // 获取对应的标识符
            let objBinding = path.scope.getBinding(objName);  // 获取标识符对应的引用
            let objRefer = objBinding.referencePaths;  // 获取标识符引用对应的数组
            let newObj = {}
            // 将给对象属性赋值的所有变量存入 newObj
            for (const refer in objRefer){  // refer 为索引值从 0 开始
                // objRefer[refer] 为 obj
                // objRefer[refer].parentPath 为 obj['str']
                // objRefer[refer].parentPath.parentPath 为 obj['str'] = 'abc'
                let grandPath = objRefer[refer].parentPath.parentPath;  // 获取该节点的整段代码

                // 该节点的类型为 AssignmentExpression 类型
                // 节点中 left 属性的类型为 MemberExpression 类型
                if (grandPath.isAssignmentExpression() && grandPath.get('left').isMemberExpression()){
                    // obj['str'] 中的 str 字符串
                    let key = grandPath.node.left.property.value;  // 获取 .property.value 的属性，作为新声明对象中的key
                    newObj[key] = grandPath.node.right;  // right为该属性对应的 node 节点，直接存入 newObj 对象即可
                }
            }


            for (const refer in objRefer.reverse()){
                let grandPath = objRefer[refer].parentPath;
                if (grandPath.isVariableDeclarator()){  // 该节点的类型应为 VariableDeclarator
                    // 例: c = obj
                    let identName = grandPath.node.id.name;  // 获取标识符中对应的 name 属性 (例中的 c）

                    // 例:
                    // let d = c['StringLiteral'];
                    // let e = c['BinaryExpression'];
                    // let f = c['funcCallExpression1'](demo, '123');
                    // let g = c['funcCallExpression2'](demo);
                    // let h = c['funcBinaryExpression']('1' + '2');
                    let identBinding = grandPath.scope.getBinding(identName);  // 获取标识符 c 对应的引用

                    // 例:
                    // [c, c, c, c, c]
                    let identRefer = identBinding.referencePaths;  // 获取标识符引用对应的数组

                    // 字符串花指令
                    for (const idenKey in identRefer) {
                        // identRefer[idenKey].parentPath
                        // c['StringLiteral']
                        // c['BinaryExpression']
                        // c['funcCallExpression1']
                        // c['funcCallExpression2']
                        // c['funcBinaryExpression']
                        let key = identRefer[idenKey].parentPath.node.property.value;  // 获取对应的属性值

                        // 获取 newObj[key]  // obj[属性值]
                        // newObj[key] 的属性值为 StringLiteral 或 BinaryExpression 节点
                        // StringLiteral 为字符串 'abc';
                        // BinaryExpression 为二项式 'abc' + 'def';
                        if (types.isStringLiteral(newObj[key]) || types.isBinaryExpression(newObj[key])){  // 还原字符串
                            console.log('花指令字符串替换前: ', identRefer[idenKey].parentPath + '')
                            identRefer[idenKey].parentPath.replaceWith(newObj[key])  // 获取 obj 中对应的 StringLiteral 节点
                            console.log('花指令字符串替换后: ', identRefer[idenKey].parentPath + '')
                            console.log('====================================')
                        }
                    }

                    // 数组翻转，从后向前遍历
                    for (const idenKey in identRefer.reverse()) {
                        // MemberExpression
                        // 为 let d = c['StringLiteral']; 中的 c['StringLiteral']
                        if (identRefer[idenKey].parentPath.isMemberExpression()){
                            // 获取对应调用的属性值 c['StringLiteral'] 中的 'StringLiteral'
                            let key = identRefer[idenKey].parentPath.node.property.value;

                            // 如果 newObj 对应属性值为 FunctionExpression 类型
                            if (types.isFunctionExpression(newObj[key])){
                                /*
                                function (){...}
                                 */

                                // 拿到 return 语句
                                let retState = newObj[key].body.body[0].argument;

                                // 二元运算还原
                                // 例: return a + b
                                if (types.isBinaryExpression(retState)){
                                    let operator = retState.operator;  // 拿到操作符 例: +

                                    // 拿到参数数组
                                    // c['funcBinaryExpression']('1', '2'); 中的 ['1', '2']
                                    let Arg = identRefer[idenKey].parentPath.parentPath.node.arguments;
                                    console.log('花指令二元替换前:  ', identRefer[idenKey].parentPath.parentPath + '')

                                    // replaceWith 将当前的节点替换
                                    // c['funcBinaryExpression']('1', '2');
                                    // 替换成
                                    // '1' + '2'
                                    identRefer[idenKey].parentPath.parentPath.replaceWith(types.binaryExpression(operator, Arg[0], Arg[1]));
                                    console.log('花指令二元替换后:  ', identRefer[idenKey].parentPath.parentPath + '')
                                    console.log('=========================')
                                }

                                // 函数调用还原
                                // 例： return a(b) / return a()
                                // 这两个的差别只有调用的参数，一个对应调用的参数为 2， 一个调用对应的参数为 1
                                // CallExpression
                                // 例: return a(b)
                                if (types.isCallExpression(retState)){
                                    // 获取该节点对应的参数
                                    // 例: c['funcCallExpression1'](demo, '123');
                                    // 中的
                                    // demo, '123'
                                    let Arg = identRefer[idenKey].parentPath.parentPath.node.arguments;
                                    console.log('花指令函数调用替换前:  ', identRefer[idenKey].parentPath.parentPath + '')

                                    // c['funcCallExpression'](demo, '123');
                                    // 替换成
                                    // demo('123');
                                    identRefer[idenKey].parentPath.parentPath.replaceWith(types.callExpression(types.identifier(Arg[0].name), Arg.slice(1)));

                                    console.log('花指令函数调用替换后:  ', identRefer[idenKey].parentPath.parentPath + '')
                                    console.log('=========================')
                                }

                            }
                        }
                    }
                }
            }
            // path.stop()
        }
    }
})


// 虚假 if
traverse(ast, {
    // IfStatement 为if判断语句
    // ConditionalExpression 为三元表达式
    "IfStatement|ConditionalExpression"(path){
        // 该节点中的判断条件应该为 二元表达式
        // left 节点应该为 StringLiteral 类型
        // right 节点应该为 StringLiteral 类型
        if(path.get('test').isBinaryExpression() && path.get('test.left').isStringLiteral() && path.get('test.right').isStringLiteral()){
            // 取出判断条件中对应的值
            // 例:  if ('a' === 'a') {  console.log("'a' === 'a' true");} else {  console.log("'a' === 'a' false");}

            let operator = path.node.test.operator;  // 取出操作符 例: ===
            let leftString = path.node.test.left.value;  // 左边的字符串 例: 'a'
            let rightString = path.node.test.right.value;  // 右边的字符串 例: === 'a'

            // 生成 eval 可判断的字符串
            let vmRun = `"${leftString}"  ${operator} "${rightString}"`;  // 例: 'a' === 'a'
            let result = eval(vmRun);
            console.log('虚假 if:  ' + (path + '').replaceAll('\n', ''))

            // 取出 if 与 else 中的代码块
            // path.node.consequent.body 为 if(){}else{}; 形式取值
            // path.node.consequent.arguments 为 statement ? true : false; 形式取值
            let ifTrue = path.node.consequent.body || path.node.consequent.arguments;
            let elFalse = path.node.alternate.body || path.node.alternate.arguments;

            // 判断 result 的执行结果，替换对应的代码块 if 或 else
            result ? path.replaceWithMultiple(ifTrue) : path.replaceWithMultiple(elFalse)
        }
    }
})


// 剔除无引用代码
const refObj = {}
traverse(ast, {
    Identifier(path) {
        let name = path.node.name;
        if (!refObj[name]) {
            refObj[name] = '1';
            let binding = path.scope.getBinding(name);
            let refPath = binding && binding.referencePaths;
            if (refPath && refPath.length === 0) {
                path.parentPath.parentPath.isVariableDeclaration() && (console.log('删除的无用代码:  ', path.parentPath + ''), path.parentPath.remove())
            }
        }
    }
})

// 无引用的对象
traverse(ast, {
    VariableDeclarator(path) {  // 遍历 VariableDeclarator 节点
        if (types.isObjectExpression(path.node.init)) {  // init 类型为 ObjectExpression 类型
            let objName = path.node.id.name;  // 获取对应的标识符
            let objBinding = path.scope.getBinding(objName);  // 获取标识符对应的引用
            let objRefer = objBinding && objBinding.referencePaths;  // 获取标识符引用对应的数组
            let quoteObj = false;
            for (const index in objRefer) {
                let grandPath = objRefer[index].parentPath.parentPath;
                if (grandPath.isAssignmentExpression() && grandPath.get('left').isMemberExpression()) {
                    if (grandPath.get('left.object').isIdentifier() && grandPath.node.left.object.name === objName) {
                        console.log(grandPath + '');
                        console.log('==============================')
                    } else {
                        quoteObj = true
                    }
                }
            }
            if (!quoteObj) {
                for (const index in objRefer) {
                    let grandPath = objRefer[index].parentPath.parentPath;
                    grandPath.remove();
                }
            }

        }
    }
})


// 数值还原
traverse(ast, {
    NumericLiteral(path){
        console.log('替换前: ', path.node.extra);
        delete path.node.extra.raw;
        console.log('替换后: ', path.node.extra);
        console.log('==============================');
    }
})


// 还原 switch
traverse(ast, {
    WhileStatement(path){
        if (path.node.test.prefix && path.get('body').isBlockStatement() && types.isSwitchStatement(path.node.body.body[0])){
            // 获取同级节点
            let sibling = path.getSibling(1)
            let whileIdx = (sibling.node.declarations[0].init.callee.object.value).split('|')
            let idxObj = {}
            let caseIdx = path.node.body.body[0].cases;
            for (const index in caseIdx){
                let key = caseIdx[index].test.value;
                idxObj[key] = caseIdx[index].consequent[0];
            }
            let newArray = []
            for (const index in whileIdx){
                newArray.push(idxObj[whileIdx[index]])
            }
            path.replaceWithMultiple(newArray);

            // 删除同级节点
            while(path.key--){
                console.log('还原switch删除的节点:  ', path.getSibling(path.key) + '');
                path.getSibling(path.key).remove();
            }
        }
    }
})
///

js_code = generator(ast, {
    compact: false,  // 是否压缩，默认 false
}).code  // 将ast节点转换成js代码

// 写入（路径记得改）
fs.writeFileSync('New_demo.js', js_code, {
    encoding: 'utf-8',
})