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<article id="post-python-bytecode" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/python-bytecode/">死磕python字节码-手工还原python源码（网鼎杯第四场逆向题chaoyang）</a>
</h1>
<a href="/python-bytecode/" class="archive-article-date">
<time datetime="2018-09-04T15:21:29.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2018-09-04</time>
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<h2 id="0x1-前言"><a href="#0x1-前言" class="headerlink" title="0x1.前言"></a>0x1.前言</h2><blockquote>
<p>Python 代码先被编译为字节码后，再由Python虚拟机来执行字节码， Python的字节码是一种类似汇编指令的中间语言， 一个Python语句会对应若干字节码指令，虚拟机一条一条执行字节码指令， 从而完成程序执行。<br>Python dis 模块支持对Python代码进行反汇编， 生成字节码指令。</p>
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<a class="article-more-a" href="/python-bytecode/#more">more >></a>
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<a href="javascript:void(0)" class="js-tag article-tag-list-link color4">CTF</a>
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<a href="javascript:void(0)" class="js-tag article-tag-list-link color3">逆向</a>
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<a class="article-more-a" href="/python-bytecode/">展开全文 >></a>
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</article>
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<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/vul-2345-3/">2345内核拒绝服务漏洞（3） - WORD的锅</a>
</h1>
<a href="/vul-2345-3/" class="archive-article-date">
<time datetime="2018-07-13T04:25:33.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2018-07-13</time>
</a>
</header>
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<h1 id="漏洞概述"><a href="#漏洞概述" class="headerlink" title="漏洞概述"></a>漏洞概述</h1><ul>
<li>软件网址：<a href="http://safe.2345.cc/" target="_blank" rel="noopener">http://safe.2345.cc/</a></li>
<li>版本：v3.7 X64</li>
</ul>
<p>2345安全软件的驱动2345BdPcSafe.sys在ioctl(0x0022204C)接口处理中，对输入数据校验不严格，精心构造的数据可导致在处理过程中内存拷贝时溢出，然后bsod拒绝服务，甚至可内核提权。</p>
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<a href="javascript:void(0)" class="js-tag article-tag-list-link color4">vul</a>
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<a href="javascript:void(0)" class="js-tag article-tag-list-link color3">exploit</a>
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<a href="javascript:void(0)" class="js-tag article-tag-list-link color5">fuzz</a>
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</ul>
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<a href="/categories/vul/" class="article-tag-list-link color4">vul</a>
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<a class="article-more-a" href="/vul-2345-3/">展开全文 >></a>
</p>
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</div>
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<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/vul-2345-2/">2345内核拒绝服务漏洞（2）</a>
</h1>
<a href="/vul-2345-2/" class="archive-article-date">
<time datetime="2018-07-08T03:15:49.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2018-07-08</time>
</a>
</header>
<div class="article-entry" itemprop="articleBody">
<h1 id="漏洞概述"><a href="#漏洞概述" class="headerlink" title="漏洞概述"></a>漏洞概述</h1><ul>
<li>软件网址：<a href="http://safe.2345.cc/" target="_blank" rel="noopener">http://safe.2345.cc/</a></li>
<li>版本：v3.7 X64</li>
</ul>
<p>2345安全软件的驱动2345BdPcSafe.sys在ioctl(0x002220E4)接口处理中，对输入数据校验不严格，可构造数据中包含非法地址导致访问违例，然后bsod拒绝服务。</p>
<a class="article-more-a" href="/vul-2345-2/#more">more >></a>
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<a href="javascript:void(0)" class="js-tag article-tag-list-link color3">exploit</a>
</li>
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<a href="javascript:void(0)" class="js-tag article-tag-list-link color5">fuzz</a>
</li>
</ul>
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<a class="article-more-a" href="/vul-2345-2/">展开全文 >></a>
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</article>
<article id="post-vul-2345-1" class="article article-type-post article-index" itemscope itemprop="blogPost">
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/vul-2345-1/">2345内核拒绝服务漏洞（1）</a>
</h1>
<a href="/vul-2345-1/" class="archive-article-date">
<time datetime="2018-07-08T03:15:39.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2018-07-08</time>
</a>
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<h1 id="概述"><a href="#概述" class="headerlink" title="概述"></a>概述</h1><p>已经快2个月了吧，已经忘了是什么原因突然搞起了驱动漏洞，反正就是很有兴致地想挖掘一下驱动漏洞。</p>
<p>在网上了解了基本的驱动漏洞挖掘方法，主要是通过ioctl接口进行挖掘，已经有很多相关fuzz工具了，比如<a href="https://github.com/N3mes1s/ioctlbf" target="_blank" rel="noopener">ioctlbf</a>、<a href="https://github.com/k0keoyo/kDriver-Fuzzer" target="_blank" rel="noopener">kDriver-Fuzzer</a>等等。</p>
<p>kDriver-Fuzzer的作者k0keoyo在2017年收获了100多个CVE，很牛逼啊，这个已经2018年了，再来挖此种类型的驱动是不是已经晚了啊，心中苦涩啊。</p>
<p>不过毕竟也写了几年驱动程序了，不搞搞怎么也说不过去啊，所以开始干！</p>
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<article id="post-windbg-usb3-dbg-win10" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<a class="article-title" href="/windbg-usb3-dbg-win10/">Windbg USB3.0双机调试</a>
</h1>
<a href="/windbg-usb3-dbg-win10/" class="archive-article-date">
<time datetime="2018-03-23T06:31:36.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2018-03-23</time>
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<h1 id="配置需求"><a href="#配置需求" class="headerlink" title="配置需求"></a>配置需求</h1><p>1.目标主机有USB3.0 xHCI主机控制器，支持调试<br>2.host主机支持USB3.0 xHCI主机控制器(使用UsbView查看)<br>3.USB 3.0 调试线(<a href="https://www.datapro.net/products/usb-3-0-super-speed-a-a-debugging-cable.html" target="_blank" rel="noopener">国外购买地址</a>（可以用普通USB3.0 公对公线改造，剪掉红绿百三根线）</p>
<blockquote>
<p>先从淘宝买一根USB 3的A对A连线，有时也称公对公连线，很便宜。这根线需要加工一下才可以支持调试，加工的方法是选取线的某个位置，剥开外皮，然后把其中的红绿白三根线剪断，然后包上就可以了。USB 3电缆的线是有固定颜色的，如图3所示，<br>其中SDP是Shielded Differential Pair的缩写，即屏蔽起来的差分信号线，是USB 3.0的数据线，UTP是Unshielded Twisted Pair的缩写，即未屏蔽的双绞线，是USB1/2使用的数据线，所谓的D+，D-。要做的加工其实就是把2.0的三根弦剪断。剥开后，很容易找到红绿白三根，胆大心细，下剪子吧:-)。</p>
</blockquote>
<p>4.两台主机系统必须是Win8以上</p>
<blockquote>
<p>On the host computer, an xHCI (USB 3.0) host controller<br>On the target computer, an xHCI (USB 3.0) host controller that supports debugging</p>
</blockquote>
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<article id="post-rustls-source-code-analyze" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<a class="article-title" href="/rustls-source-code-analyze/">Rustls之源码分析总结（一）</a>
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<a href="/rustls-source-code-analyze/" class="archive-article-date">
<time datetime="2017-11-17T05:19:50.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2017-11-17</time>
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<ul>
<li>作者：<strong>anhkgg</strong> </li>
<li>日期：<strong>2017-11-16</strong></li>
</ul>
<p>rustls已经支持tls1.3，但是测试分析中使用的tls1.2，所以后面分析主要集中在tls1.2。</p>
<p>主要分析的源码内容：</p>
<ol>
<li>client和server的握手协议流程</li>
<li>rustls是如何进行数据传输的</li>
<li>数据传输是如何加密解密的</li>
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<article id="post-tans-net-bypass-uac" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<a class="article-title" href="/tans-net-bypass-uac/">翻译：通过.NET程序提权绕过UAC</a>
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<a href="/tans-net-bypass-uac/" class="archive-article-date">
<time datetime="2017-09-21T06:04:46.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2017-09-21</time>
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<p>.NET框架可以通过用户自定义环境变量和CLSID注册表项来加载profiler DLL或者COM组件DLL，甚至当前进程是提权的。这种行为可以被利用来绕过Windows 7到10（包括最近的RS3）系统的默认UAC设置，如通过自动提权.NET进程（MMC管理单元）来加载任意的DLL。</p>
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<a class="article-title" href="/tans-fireeye-cve-2017-8759-finspy-0day/">翻译：FireEye揭露CVE-2017-8759：分发FINSPY的0day</a>
</h1>
<a href="/tans-fireeye-cve-2017-8759-finspy-0day/" class="archive-article-date">
<time datetime="2017-09-14T02:12:47.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2017-09-14</time>
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<p>2017.9.12 | by Genwei Jiang, Ben Read, Tom Bennett | Threat Research</p>
<p>FIreEye近期检测到一个恶意的利用CVE-2017-8759漏洞的微软Office RTF文档。</p>
<p>CVE-2017-8759是SOAP WSDL分析器代码注入漏洞，在解析SOAP WSDL定义的内容中它允许攻击者注入任意代码。</p>
<p>FireEye分析了这个攻击者使用的微软Word文档，它利用任意代码注入来下载和执行一个包含PowerShell命令的VB脚本。</p>
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<article id="post-pylogin-baidutongji-login-analyze" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<a class="article-title" href="/pylogin-baidutongji-login-analyze/">pylogin系列之搞定百度统计</a>
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<a href="/pylogin-baidutongji-login-analyze/" class="archive-article-date">
<time datetime="2017-08-21T16:01:25.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2017-08-22</time>
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<h1 id="概述"><a href="#概述" class="headerlink" title="概述"></a>概述</h1><p>这次分析的百度统计登录接口，算是这几个中最简单的了。</p>
<p>但是学到了一个新东西，叫做js模板，搞web的同学应该知道，我这种web半吊子第一次见，非常有意思。</p>
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<a class="article-title" href="/pylogin-v2ex-login-analyze/">pylogin系列之V2EX自动领币消息提醒</a>
</h1>
<a href="/pylogin-v2ex-login-analyze/" class="archive-article-date">
<time datetime="2017-08-18T13:09:58.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2017-08-18</time>
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<h1 id="概述"><a href="#概述" class="headerlink" title="概述"></a>概述</h1><p>最近开始混v2ex，v2ex发主题、回复都要收钱，发帖收钱还跟字数相关，之前不知道这些，发个帖子内容太多，kao，没钱了！</p>
<p>虽然主题有人回复会收到钱，但是也没人回复啊，也不知道v2ex大佬们喜欢什么内容！</p>
<p>幸好v2ex有个登录领币任务，每天还可以攒点钱，但是有些时候会忘啊，怎么办？…</p>
<p>嗯，程序员嘛，偷懒的办法多…这就开始分析接口，自动领币！</p>
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