javascript - 这种类型的JS加密怎么破解?
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</code>
回复内容:
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</code>
这种简单的东西压根起不到加密的效果,骗骗小孩罢了。
原理上无非就是将JS代码作为字符串,对这个字符串进行escape一类的混淆,执行时不过unescape再eval一下。
<code>this.eval=function (s) { console.log(s); }; </code>
这样不就能得到原来的代码了么:
<code>var fangke_xHead = document.getElementsByTagName('HEAD').item(0); var para = document.getElementById("qq_js"); var v; var v = para.src; var tmp = v.split("?"); var ids = tmp[1]; var url = tmp[0].split("Count.js"); function skip() { if (document.getElementById('QQfangke_iframe') == null) { var QQfangke_xurl = 'http://qq-812631263.huantu.net/T-census.php?' + ids; var QQfangke_ref = encodeURIComponent(document.referrer); var QQfangke_page = encodeURIComponent(document.location.href); var QQfangke_url = QQfangke_xurl + '&url=' + url[0] + '&llurl=' + QQfangke_ref + '&thepage=' + QQfangke_page + '&t=' + new Date().getTime(); var iframe = document.createElement("iframe"); iframe.src = QQfangke_url; iframe.id = "QQfangke_iframe"; iframe.name = "QQfangke_iframe"; iframe.style.width = "0px"; iframe.style.height = "0px"; iframe.scrolling = "no"; iframe.setAttribute('frameborder', '0', 0); document.body.appendChild(iframe) } } skip(); </code>
举一隅不以三隅反,则免不了调试代码通宵~
我没有明说的是,它的代码进行了好几次的解码,所以原代码第一次运行时,eval方法截获的字符串仍然是一个"eval(SubstantialCode)"形式的字符串,所以需要将其中SubstantialCode再执行一次,反复此方法,最终eval会截获到原始的代码。
大致这样吧:
<code>var _eval=this.eval; this.eval=function (s) { if (s.indexOf("eval")==0) _eval(s); else console.log(s); }; </code>

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如果您是一位经验丰富的 PHP 开发人员,您可能会感觉您已经在那里并且已经完成了。您已经开发了大量的应用程序,调试了数百万行代码,并调整了一堆脚本来实现操作

本教程演示了如何使用PHP有效地处理XML文档。 XML(可扩展的标记语言)是一种用于人类可读性和机器解析的多功能文本标记语言。它通常用于数据存储

JWT是一种基于JSON的开放标准,用于在各方之间安全地传输信息,主要用于身份验证和信息交换。1.JWT由Header、Payload和Signature三部分组成。2.JWT的工作原理包括生成JWT、验证JWT和解析Payload三个步骤。3.在PHP中使用JWT进行身份验证时,可以生成和验证JWT,并在高级用法中包含用户角色和权限信息。4.常见错误包括签名验证失败、令牌过期和Payload过大,调试技巧包括使用调试工具和日志记录。5.性能优化和最佳实践包括使用合适的签名算法、合理设置有效期、

字符串是由字符组成的序列,包括字母、数字和符号。本教程将学习如何使用不同的方法在PHP中计算给定字符串中元音的数量。英语中的元音是a、e、i、o、u,它们可以是大写或小写。 什么是元音? 元音是代表特定语音的字母字符。英语中共有五个元音,包括大写和小写: a, e, i, o, u 示例 1 输入:字符串 = "Tutorialspoint" 输出:6 解释 字符串 "Tutorialspoint" 中的元音是 u、o、i、a、o、i。总共有 6 个元

静态绑定(static::)在PHP中实现晚期静态绑定(LSB),允许在静态上下文中引用调用类而非定义类。1)解析过程在运行时进行,2)在继承关系中向上查找调用类,3)可能带来性能开销。

PHP的魔法方法有哪些?PHP的魔法方法包括:1.\_\_construct,用于初始化对象;2.\_\_destruct,用于清理资源;3.\_\_call,处理不存在的方法调用;4.\_\_get,实现动态属性访问;5.\_\_set,实现动态属性设置。这些方法在特定情况下自动调用,提升代码的灵活性和效率。
