JS加密/解密之XX数据后台列表JS加密

目标地址

ZHkuZmVpZ3VhLmNu

需求

老朋友联系到我，希望能自己做一个方便读取的小工具给公司内部用，承诺绝不外传。但是获取接口数据的最后一步遇到了问题，响应回来的数据做了大量加密，无法识别。

代码分析

该站代码做了大量的Promise异步处理，webpack打包的格式。追踪比较困难，最后花了很大功夫才跟到关键函数。(关于Promise的特性原理可以看我之前写的文章，写的有不对的地方欢迎指出)

// 全是类似于这种格式的函数 中间掺杂了大量的异步方法，根本没法跟进
function T(e, o, t, a) {
    var n = C(e);
    if (!n)
        return "function" == typeof o && o(p),
        void 0;
    var r = t && t.cdn
      , i = t && t.sync
      , m = t && t.timeout || 5e3;
    if (0 !== n.depends.length)
        for (var s = 0; s < n.depends.length; s++) {
            var l = n.depends[s];
            t && (delete t.sync,
            delete t.timeout,
            delete t.cdn),
            M(l, void 0, t)
        }
    var c = a || {};
    c.module = n,
    c.name = e,
    c.state = b,
    c.callbacks = c.callbacks || [],
    c.options = t,
    o && c.callbacks.push(o),
    c.timeoutTimer = setTimeout(function() {
        c.state = g,
        W(c, t && t.throwExceptionInCallback)
    }, m),
    a || u.push(c);
    var f = n.sync;
    i && (f = i);
    var h = d(n.name, r);
    S(h, "AWSC_" + n.name, f)
}

结果

最后找到了代码，是一个变种的AES加密+自定义的字符串转码加密，相关逻辑一步步手工复原。中间还有用到jsjiami官网类似的加密逻辑。

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算法还原后的代码就不贴了，尊重网站作者隐私。需要的可以联系jsjiami官方客服。