記一次有意思的種樹比賽

時間 2021-03-14

標籤 javascript java git github json 數組瀏覽器多線程 app async 欄目 JavaScript 简体版

原文原文鏈接

記一次有意思的種樹比賽

在招聘羣裏有位老哥發了個網址http://geek.qq.com/tree/，發現挺好玩，別說這玩意還真讓人極其上頭哈哈，此次種樹實際上就是相似於一個闖關遊戲，種樹種到必定數量就會出現新的玩法，固然我也是個小菜雞，弄了100w就種不下去了，在我玩的這幾關就須要解密混淆的js等等一些操做，仍是挺好玩的，注意這邊是成功種一棵樹後才能繼續種下一棵樹，所以開多線程並行刷接口沒有意義。javascript

第一關

第一關是1-1w棵樹，第一關仍是很簡單的，就是一個簡單的發起請求，數組中就只有一個值，把這個值取出來再請求攜帶回去就好，實際上這個闖關遊戲的處理都是在這邊中間的處理過程。java

/**
pull示例
http://159.75.70.9:8081/pull?u=0000081082CCDB14682A1505892071B1
返回示例
{"c":"A274075A","a":[73513],"t":"000010510000000086A11C1156D6202A"}

push示例
http://159.75.70.9:8081/push?t=000010510000000086A11C1156D6202A&a=73513
返回示例
{"success":1,"score":1}

實際上闖關的時候處理的只須要關注這個a便可，這個值就是從上邊push的數組中取得的，因此直接pop便可。git

var f = function(obj){
    return new Promise(resolve => {
        resolve(obj.a.pop());
    })
}

while(true){
    try{
        let token = "0000081082CCDB14682A1505892071B1"
        let pull = await (await fetch(`${cgi}/pull?u=${token}`)).json();
        let val = await f(pull);
        let push = await (await fetch(`${cgi}/push?t=${pull.t}&a=${val}`)).json();
        console.log(push);
        if(!push.success) throw push;
    }catch(e){
        break;
    }
}
// 注：變量cgi已在全局定義

第二關

第二關是1w-10w棵樹，實際上當請求第一次以後，會根據返回的push對象中的c屬性的值動態插入一個<script>實現一個函數掛在到全局window而後再調用這個函數去計算push該提交的值，固然這邊的計算要麼是給你一個長延時要麼就是一個很耗時的循環操做，讓你去本身有優化實現再去加速種樹。github

/**
pull示例
http://159.75.70.9:8081/pull?u=0000081082CCDB14682A1505892071B1
返回示例
{"c":"A3C2EA99","a":[79124],"t":"00001051000100011B214AC36A8E9369"}

push示例
http://159.75.70.9:8081/push?t=00001051000100011B214AC36A8E9369&a=6260686500
返回示例
{"success":1,"score":10002}

此時動態加載的js是這個樣子的。json

// http://159.75.70.9:8080/A3C2EA99.js
window.A3C2EA99=async function({a}){return new Promise(_=>setTimeout(__=>_(a[0]*a[0]+a[0]),2000))}

實際上看起來就是計算了a[0]*a[0]+a[0]，可是若是直接調用這個方法會有大約2s的延遲，因此咱們須要本身優化。數組

var f = function(obj){
    return new Promise(resolve => {
        const a = obj.a.pop();
        resolve(a*a+a);
    })
}

while(true){
    try{
        let token = "0000081082CCDB14682A1505892071B1"
        let pull = await (await fetch(`${cgi}/pull?u=${token}`)).json();
        let val = await f(pull);
        let push = await (await fetch(`${cgi}/push?t=${pull.t}&a=${val}`)).json();
        console.log(push);
        if(!push.success) throw push;
    }catch(e){
        break;
    }
}

// 注：變量cgi已在全局定義

第三關

第三關是10w-25w棵樹，此時的js就開始向着加密混淆發展了。瀏覽器

/**
pull示例
http://159.75.70.9:8081/pull?u=0000081082CCDB14682A1505892071B1
返回示例
{"c":"A5473788","a":[359,626,105471],"t":"0000105100100000072FD4E99C75A6C6"}

push示例
http://159.75.70.9:8081/push?t=0000105100100000072FD4E99C75A6C6&a=17923
返回示例
{"success":1,"score":100001}

此時動態加載的js是這個樣子的。多線程

eval(atob("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"))

固然這只是個base64編碼，咱們把他解開就能夠看到源代碼的實現了。app

var _0xe936 = ['A5473788']; (function(_0x48e85c, _0xe936d8) {
    var _0x23fc5a = function(_0x2858d9) {
        while (--_0x2858d9) {
            _0x48e85c['push'](_0x48e85c['shift']());
        }
    };
    _0x23fc5a(++_0xe936d8);
} (_0xe936, 0x196));
var _0x23fc = function(_0x48e85c, _0xe936d8) {
    _0x48e85c = _0x48e85c - 0x0;
    var _0x23fc5a = _0xe936[_0x48e85c];
    return _0x23fc5a;
};
window[_0x23fc('0x0')] = function(_0x335437) {
    var _0x1aac02 = 0x30d3f;
    for (var _0x3bed6a = 0x30d3f; _0x3bed6a > 0x0; _0x3bed6a--) {
        var _0x375340 = 0x0;
        for (var _0x1ddb77 = 0x0; _0x1ddb77 < _0x3bed6a; _0x1ddb77++) {
            _0x375340 += _0x335437['a'][0x0];
        }
        _0x375340 % _0x335437['a'][0x2] == _0x335437['a'][0x1] && _0x3bed6a < _0x1aac02 && (_0x1aac02 = _0x3bed6a);
    }
    return _0x1aac02;
};

在這個js中有很是耗時的循環操做，看這個0x30d3f = 199999而且內部還有一個for就知道了，可是咱們能夠精簡這個循環與整個代碼，讓咱們種樹種的更快。async

var f = function(_0x335437) {
    var _0x1aac02 = 0x30d3f;
    for (var _0x3bed6a = 0x30d3f; _0x3bed6a > 0x0; _0x3bed6a--) {
        var _0x375340 = _0x335437['a'][0x0] * _0x3bed6a;
        _0x375340 % _0x335437['a'][0x2] == _0x335437['a'][0x1] && _0x3bed6a < _0x1aac02 && (_0x1aac02 = _0x3bed6a);
    }
    return _0x1aac02;
};

while(true){
    try{
        let token = "0000081082CCDB14682A1505892071B1"
        let pull = await (await fetch(`${cgi}/pull?u=${token}`)).json();
        let val = await f(pull);
        let push = await (await fetch(`${cgi}/push?t=${pull.t}&a=${val}`)).json();
        console.log(push);
        if(!push.success) throw push;
    }catch(e){
        break;
    }
}

// 注：變量cgi已在全局定義

第四關

第四關是25w-50w棵樹，這個js就更加讓人難受了，全是[]的混淆。

/**
pull示例
http://159.75.70.9:8081/pull?u=0000081082CCDB14682A1505892071B1
返回示例
{"c":"A593C8B8","a":[649,2356,222,1344,506,1797,840],"t":"000008100036230024B0D39DA416E5DD"}

push示例
http://159.75.70.9:8081/push?t=000008100036230024B0D39DA416E5DD&a=151231471
返回示例
{"success":1,"score":250001}

此時動態加載的js是這個樣子的。

window.A593C8B8=async(_)=>(($,_,__,___,____)=>{let _____=function*(){while([])yield[(_,__)=>_+__,(_,__)=>_-__,(_,__)=>_*__][++__%(!+[]+!+[]+!+[])][(+(+!+[]+[+!+[]]))[(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(+![]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(+![]+[![]]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[!+[]+!+[]+[+[]]]](!+[]+!+[]+[+[]])+([![]]+[][[]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+([][[]]+[])[!+[]+!+[]]](+[],___,____)}();let ______=function(_____,______,_______){____=_____;___=______[([][[]]+'')[+!+[]]+(!![]+'')[+!+[]+!+[]+!+[]]+(+(+!+[]+[+[]]+[+!+[]]))[(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(+![]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(+![]+[![]]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[!+[]+!+[]+[+[]]]](!+[]+!+[]+!+[]+[!+[]+!+[]+!+[]+!+[]])[+!+[]]+(!![]+'')[+[]]]()[(+(!+[]+!+[]+!+[]+[+!+[]]))[(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(+![]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(+![]+[![]]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[!+[]+!+[]+[+[]]]](!+[]+!+[]+!+[]+[!+[]+!+[]])+(![]+[])[+!+[]]+(![]+[])[!+[]+!+[]]+([][[]]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]]();__==_[(![]+'')[+!+[]]][(![]+[])[!+[]+!+[]]+(!![]+[])[!+[]+!+[]+!+[]]+([][[]]+[])[+!+[]]+(+![]+[![]]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[!+[]+!+[]+[+[]]]+(!![]+[])[+[]]+(+(+!+[]+[+[]]+[+!+[]]))[(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(+![]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(+![]+[![]]+([]+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]])[!+[]+!+[]+[+[]]]](!+[]+!+[]+[+!+[]])[+!+[]]]&&_______(-___)};return new 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看起來很讓人難受，對於這個混淆，咱們將其中的自執行函數處理一下，讓其生成調用的函數名就比較明朗了，這裏不得不說vscode真好用，在這裏我爲了便於測試還有一些其餘的代碼，如今對於這個混淆的代碼就有一個總體的瞭解了。

var f = async(_)=>(($,obj,__,___,____)=>{
    let _____ = function*() {
        while([]){
            console.log(__, ___, ____);
            yield[(_,__)=>_ + __, (_,__)=>_ - __, (_,__)=>_ * __][++__ % 3]["bind"](0, ___, ____)
        }
    }();
    let fff = function(_____, fff, ffff) {
        ____ = _____;
        ___ = fff["next"]()["value"]();
        console.log(___)
        __ == obj["a"]["length"] && ffff(-___)
    };
    return new Promise(__=>obj["a"]["forEach"](___=>$["setTimeout"](____=>{fff(___, _____, __);}, ___)))
}
)(typeof window === "undefined" ? global : window, _, +[], +[], +[])


f({"c":"A593C8B8","a":[1205,890,624,1689,389,144,2129],"t":"0000081000250018B3E6669F59D9A3EF"}).then(res => console.log(res))
// 67820250

在此處不得不吐槽一句，爲了混淆這個文件真的變得好大，處理完了才這麼一點代碼，還有就是這個代碼用生成器搞了個相似於那個使用Java多線程去排序的計算方法(固然js是單線程的)，去搞時間延遲阻止咱們種樹，這裏咱們就根據他的邏輯本身實現一下計算方式。

var f = function(obj){
    return new Promise(resolve => {
        let counter = 0;
        obj.a.sort((a, b) => a-b);
        obj.a.forEach((v, i) => {
            const operater = [(_,__)=>_ + __, (_,__)=>_ - __, (_,__)=>_ * __][(i+1) % 3];
            counter = operater(counter, v);
        })
        resolve(-counter);
    })
}

while(true){
    try{
        let token = "0000081082CCDB14682A1505892071B1"
        let pull = await (await fetch(`${cgi}/pull?u=${token}`)).json();
        let val = await f(pull);
        let push = await (await fetch(`${cgi}/push?t=${pull.t}&a=${val}`)).json();
        console.log(push)
        if (!push.success) throw push;
    }catch(e){
        break;
    }
}

// 注：變量cgi已在全局定義

第五關

第五關是50w-100w棵樹，第五關忽然出來了一個WebAssembly也就是wasm，這個是真沒用過，着實把我看傻了，雖然沒了解過可是硬剛了一波，晚上惡補了一波指令，過了50w這一關。

/**
pull示例
http://159.75.70.9:8081/pull?u=0000081082CCDB14682A1505892071B1
返回示例
{"c":"A661E542","a":[334562437,6452978],"t":"0000081000666290FA5B0B81481B32CD"}

push示例
http://159.75.70.9:8081/push?t=0000081000666290FA5B0B81481B32CD&a=334562804
返回示例
{"success":1,"score":500006}

此時動態加載的js是這個樣子的。

window.A661E542=async function({a:A}){return(await WebAssembly.instantiate(await WebAssembly.compile(await (await fetch("data:application/octet-binary;base64,AGFzbQEAAAABBwFgAn9/AX8CFwIETWF0aANtaW4AAARNYXRoA21heAAAAwIBAAcHAQNSdW4AAgpgAV4BBn8gACECIAFBAWsiBARAA0AgAiEDQQAhBkEKIQcDQCADQQpwIQUgA0EKbiEDIAUgBhABIQYgBSAHEAAhByADQQBLDQALIAIgBiAHbGohAiAEQQFrIgQNAAsLIAIL")).arrayBuffer()),{Math:Math})).exports.Run(...A)}

使用了這個WebAssembly我也是頭疼了半天，搜索了不少教程都得新安裝一個軟件進行反編譯，而後我本身在不斷嘗試下發現谷歌瀏覽器能夠直接查看甚至調試，不得不說谷歌瀏覽器仍是牛逼啊。

var f = async function({a:A}){
    const fetcher = await fetch("data:application/octet-binary;base64,AGFzbQEAAAABBwFgAn9/AX8CFwIETWF0aANtaW4AAARNYXRoA21heAAAAwIBAAcHAQNSdW4AAgpgAV4BBn8gACECIAFBAWsiBARAA0AgAiEDQQAhBkEKIQcDQCADQQpwIQUgA0EKbiEDIAUgBhABIQYgBSAHEAAhByADQQBLDQALIAIgBiAHbGohAiAEQQFrIgQNAAsLIAIL");
    const buffer = await (fetcher).arrayBuffer();
    const compiler = await WebAssembly.compile(buffer);
    const instantiate = (await WebAssembly.instantiate(compiler, {Math:Math}));
    console.log(instantiate.exports); // 查看Run方法的[[FunctionLocation]]
    return instantiate.exports.Run(...A)
}

console.log(f({"c":"A661E542","a":[116823665, 6153003],"t":"0000081000500002F1D882C546C34290"}).then(res => console.log(res)));
// 116823707
// https://www.wasm.com.cn/docs/semantics/#32-bit-integer-operators

(module
  (func $Math.min (;0;) (import "Math" "min") (param i32 i32) (result i32))
  (func $Math.max (;1;) (import "Math" "max") (param i32 i32) (result i32))
  (func $Run (;2;) (export "Run") (param $var0 i32) (param $var1 i32) (result i32)
    (local $var2 i32) (local $var3 i32) (local $var4 i32) (local $var5 i32) (local $var6 i32) (local $var7 i32)
    local.get $var0
    local.set $var2
    local.get $var1
    i32.const 1
    i32.sub
    local.tee $var4
    if
      loop $label1
        local.get $var2
        local.set $var3
        i32.const 0
        local.set $var6
        i32.const 10
        local.set $var7
        loop $label0
          local.get $var3
          i32.const 10
          i32.rem_u
          local.set $var5
          local.get $var3
          i32.const 10
          i32.div_u
          local.set $var3
          local.get $var5
          local.get $var6
          call $Math.max
          local.set $var6
          local.get $var5
          local.get $var7
          call $Math.min
          local.set $var7
          local.get $var3
          i32.const 0
          i32.gt_u
          br_if $label0
        end $label0
        local.get $var2
        local.get $var6
        local.get $var7
        i32.mul
        i32.add
        local.set $var2
        local.get $var4
        i32.const 1
        i32.sub
        local.tee $var4
        br_if $label1
      end $label1
    end
    local.get $var2
  )
)

最後慢慢debug而後用js模擬實現了一下這個wasm的操做，運行速度會快得多，而後這一關就闖過了，這個棧式語言也仍是挺好玩的。

var f = async function({a:A}){
    let $var0 = A[0];
    let $var1 = A[1];
    let $var2 = $var0;
    let $var4 = $var1-1;

    let $var3=0, $var5=0, $var6=0, $var7=0;
    while(1){
        $var3 = $var2;
        $var6 = 0;
        $var7 = 10;
        while(1){
            $var5 = $var3 % 10;
            $var3 = ($var3 / 10) >> 0;
            $var6 = Math.max($var5, $var6);
            $var7 = Math.min($var5, $var7);
            if($var3 <= 0) break; 
        }
        $var2 = $var6 * $var7 + $var2;
        $var4--;
        if($var4 <= 0) break;
    }
    return $var2;
}

while(true){
    try{
        let token = "0000081082CCDB14682A1505892071B1"
        let pull = await (await fetch(`${cgi}/pull?u=${token}`)).json();
        let val = await f(pull);
        let push = await (await fetch(`${cgi}/push?t=${pull.t}&a=${val}`)).json();
        console.log(push)
        if (!push.success) throw push;
    }catch(e){
        break;
    }
}

// // 注：變量cgi已在全局定義

最後

雖然寫這個極其上頭，可是還有不少事沒作，好比老師給的論文下週要作彙報，玩了一下午先不玩了，在我寫下這篇文章的時候已經有大佬種到200w棵了，我才種了100w，而後排行是82，在此仰望大佬們哈哈。

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