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    <title>QCTF2018 on 知识带给我们自由</title>
    <link>https://yuexuan521.github.io/zh/tags/qctf2018/</link>
    <description>Recent content in QCTF2018 on 知识带给我们自由</description>
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      <title>知识带给我们自由</title>
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      <title>BUUCTF [QCTF2018]X-man-A face 1</title>
      <link>https://yuexuan521.github.io/zh/posts/buuctf-qctf2018x-man-a-face-1/</link>
      <pubDate>Mon, 09 Jun 2025 08:30:00 +0000</pubDate>
      <guid>https://yuexuan521.github.io/zh/posts/buuctf-qctf2018x-man-a-face-1/</guid>
      <description>&lt;p&gt;
&lt;div class=&#34;post-img-view&#34;&gt;
    &lt;a data-fancybox=&#34;gallery&#34; href=&#34;https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191711309.png&#34;&gt;
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&lt;/div&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;BUUCTF: &lt;a href=&#34;https://buuoj.cn/challenges&#34;target=&#34;_blank&#34; rel=&#34;noopener noreferrer&#34;&gt;https://buuoj.cn/challenges&lt;/a&gt;&lt;/strong&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;p&gt;相关阅读
&lt;a href=&#34;https://ctf-wiki.org/&#34;target=&#34;_blank&#34; rel=&#34;noopener noreferrer&#34;&gt;CTF Wiki&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;
&lt;div class=&#34;post-img-view&#34;&gt;
    &lt;a data-fancybox=&#34;gallery&#34; href=&#34;https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191713887.png&#34;&gt;
        &lt;img src=&#34;https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191713887.png&#34; 
             alt=&#34;在这里插入图片描述&#34; 
              
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        /&gt;
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&lt;/div&gt;&lt;/p&gt;
&lt;h3 id=&#34;题目描述&#34;&gt;题目描述：&lt;/h3&gt;
&lt;p&gt;得到的 flag 请包上 flag{} 提交。来源：https://github.com/hebtuerror404/CTF_competition_warehouse_2018&lt;/p&gt;</description>
      <content:encoded><![CDATA[<p>
<div class="post-img-view">
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<p><strong>BUUCTF: <a href="https://buuoj.cn/challenges"target="_blank" rel="noopener noreferrer">https://buuoj.cn/challenges</a></strong></p>
<hr>
<p>相关阅读
<a href="https://ctf-wiki.org/"target="_blank" rel="noopener noreferrer">CTF Wiki</a></p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191713887.png">
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<h3 id="题目描述">题目描述：</h3>
<p>得到的 flag 请包上 flag{} 提交。来源：https://github.com/hebtuerror404/CTF_competition_warehouse_2018</p>
<h3 id="密文">密文：</h3>
<p>下载附件解压，得到Xman-Aface-61df10385eaccbb3627ca3926c6ae174.png</p>
<p>
<div class="post-img-view">
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<hr>
<h3 id="解题思路">解题思路：</h3>
<p>1、既然二维码是缺失的，第一反应去补全二维码。缺失的部分是定位图案，复制仅存的定位图案，粘贴在缺失的地方，用PS。</p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191718209.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191718209.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
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    </a>
</div></p>
<p>操作得到，完整二维码如下：</p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191719863.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191719863.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<p>2、扫码得到一串密文。（我的QR_Research好像坏了，用手机夸克扫出来的，跟上一题一样）</p>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-python" data-lang="python"><span class="line"><span class="cl"><span class="n">KFBVIRT3KBZGK5DUPFPVG2LTORSXEX2XNBXV6QTVPFZV6TLFL5GG6YTTORSXE7I</span><span class="o">=</span>
</span></span></code></pre></td></tr></table>
</div>
</div><p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191722193.png">
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             alt="在这里插入图片描述" 
              
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    </a>
</div></p>
<p>观察密文特征，确定为Base32编码，解明文得到flag： <code>QCTF{Pretty_Sister_Who_Buys_Me_Lobster}</code> 。</p>
<p><a href="https://www.qqxiuzi.cn/bianma/base.php"target="_blank" rel="noopener noreferrer">Base32编码解码</a></p>
<p>
<div class="post-img-view">
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             alt="在这里插入图片描述" 
              
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</div></p>
<p>有故事的出题人</p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191726792.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191726792.png" 
             alt="在这里插入图片描述" 
              
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    </a>
</div></p>
<h3 id="flag">flag：</h3>
<div class="highlight"><div class="chroma">
<table class="lntable"><tr><td class="lntd">
<pre tabindex="0" class="chroma"><code><span class="lnt">1
</span></code></pre></td>
<td class="lntd">
<pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">flag<span class="o">{</span>Pretty_Sister_Who_Buys_Me_Lobster<span class="o">}</span>
</span></span></code></pre></td></tr></table>
</div>
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