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    <title>二维码 on 知识带给我们自由</title>
    <link>https://yuexuan521.github.io/zh/tags/%E4%BA%8C%E7%BB%B4%E7%A0%81/</link>
    <description>Recent content in 二维码 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 二维码 1（求求了！别让我再拼二维码啦！！！(╯°□°）╯︵ ┻━┻）</title>
      <link>https://yuexuan521.github.io/zh/posts/buuctf-%E4%BA%8C%E7%BB%B4%E7%A0%81-1%E6%B1%82%E6%B1%82%E4%BA%86%E5%88%AB%E8%AE%A9%E6%88%91%E5%86%8D%E6%8B%BC%E4%BA%8C%E7%BB%B4%E7%A0%81%E5%95%A6/</link>
      <pubDate>Mon, 24 Mar 2025 08:30:00 +0000</pubDate>
      <guid>https://yuexuan521.github.io/zh/posts/buuctf-%E4%BA%8C%E7%BB%B4%E7%A0%81-1%E6%B1%82%E6%B1%82%E4%BA%86%E5%88%AB%E8%AE%A9%E6%88%91%E5%86%8D%E6%8B%BC%E4%BA%8C%E7%BB%B4%E7%A0%81%E5%95%A6/</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/20251228192554081.png&#34;&gt;
        &lt;img src=&#34;https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228192554081.png&#34; 
             alt=&#34;&#34; 
              
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        /&gt;
    &lt;/a&gt;
&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;a href=&#34;https://blog.csdn.net/qq_45163122/article/details/106124042&#34;target=&#34;_blank&#34; rel=&#34;noopener noreferrer&#34;&gt;CTF-Misc-二维码（二）撕破的二维码&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/20251228192557018.png&#34;&gt;
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             alt=&#34;在这里插入图片描述&#34; 
              
             loading=&#34;lazy&#34;
        /&gt;
    &lt;/a&gt;
&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;一不小心把存放flag的二维码给撕破了，各位大侠帮忙想想办法吧 注意：得到的 flag 请包上 flag{} 提交&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>
<a href="https://blog.csdn.net/qq_45163122/article/details/106124042"target="_blank" rel="noopener noreferrer">CTF-Misc-二维码（二）撕破的二维码</a></p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228192557018.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228192557018.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<h3 id="题目描述">题目描述：</h3>
<p>一不小心把存放flag的二维码给撕破了，各位大侠帮忙想想办法吧 注意：得到的 flag 请包上 flag{} 提交</p>
<h3 id="密文">密文：</h3>
<p>保存附件，得到860c6e1a-a433-4a70-bfd0-5a318e758705.jpg</p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228192558368.jpeg">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228192558368.jpeg" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<hr>
<h3 id="解题思路">解题思路：</h3>
<p>1、所见即所得，开始拼二维码吧。</p>
<p>首先，将所有二维码碎片截取出来。</p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228192601525.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228192601525.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<p>最后，用PS拼在一起。（糟糕的手艺活）</p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228192603853.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228192603853.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<p>2、得到二维码后，用QR_Research一直扫不出来，转用手机夸克扫出来，flag: <code>flag{7bf116c8ec2545708781fd4a0dda44e5}</code></p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228192606320.jpeg">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228192606320.jpeg" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<p>发现我拼的二维码，用什么在线网站都扫不出来，真是我拼的差吗？(╯°□°）╯︵ ┻━┻）</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>7bf116c8ec2545708781fd4a0dda44e5<span class="o">}</span>
</span></span></code></pre></td></tr></table>
</div>
</div>]]></content:encoded>
    </item>
    <item>
      <title>BUUCTF [RoarCTF2019]黄金6年 1</title>
      <link>https://yuexuan521.github.io/zh/posts/buuctf-roarctf2019%E9%BB%84%E9%87%916%E5%B9%B4-1/</link>
      <pubDate>Wed, 21 Aug 2024 20:38:23 +0000</pubDate>
      <guid>https://yuexuan521.github.io/zh/posts/buuctf-roarctf2019%E9%BB%84%E9%87%916%E5%B9%B4-1/</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/20251228191736799.png&#34;&gt;
        &lt;img src=&#34;https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191736799.png&#34; 
             alt=&#34;&#34; 
              
             loading=&#34;lazy&#34;
        /&gt;
    &lt;/a&gt;
&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/20251228191738963.png&#34;&gt;
        &lt;img src=&#34;https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191738963.png&#34; 
             alt=&#34;在这里插入图片描述&#34; 
              
             loading=&#34;lazy&#34;
        /&gt;
    &lt;/a&gt;
&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。&lt;/p&gt;
&lt;h3 id=&#34;密文&#34;&gt;密文：&lt;/h3&gt;
&lt;p&gt;下载附件，得到.mp4文件。&lt;/p&gt;
&lt;div align=&#34;center&#34; style=&#34;border: 3px solid gray;border-radius: 27px;overflow: hidden;&#34;&gt; &lt;a class=&#34;link-info&#34; href=&#34;https://live.csdn.net/v/embed/348339&#34; rel=&#34;nofollow&#34; title=&#34;attachment&#34;&gt;attachment&lt;/a&gt;&lt;iframe id=&#34;wxkPf7r3-1701582521906&#34; frameborder=&#34;0&#34; src=&#34;https://live.csdn.net/v/embed/348339&#34; allowfullscreen=&#34;true&#34; data-mediaembed=&#34;csdn&#34; style=&#34;width: 100%; aspect-ratio: 2;&#34;&gt;&lt;/iframe&gt;&lt;/div&gt;
&lt;hr&gt;
&lt;h3 id=&#34;解题思路&#34;&gt;解题思路：&lt;/h3&gt;
&lt;p&gt;1、浅浅的看了一遍，没发现什么有用的内容。放到Kinovea中，慢倍速看了一遍，发现四个二维码。（我真的没想到还有第四个二维码，找了半天都没有，结果是Kinovea自动去掉了最后的一个片段，害苦我了，最后是用Microsoft Clipchamp找到的，点赞）&lt;/p&gt;</description>
      <content:encoded><![CDATA[<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191736799.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191736799.png" 
             alt="" 
              
             loading="lazy"
        />
    </a>
</div></p>
<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/20251228191738963.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191738963.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<h3 id="题目描述">题目描述：</h3>
<p>得到的 flag 请包上 flag{} 提交。</p>
<h3 id="密文">密文：</h3>
<p>下载附件，得到.mp4文件。</p>
<div align="center" style="border: 3px solid gray;border-radius: 27px;overflow: hidden;"> <a class="link-info" href="https://live.csdn.net/v/embed/348339" rel="nofollow" title="attachment">attachment</a><iframe id="wxkPf7r3-1701582521906" frameborder="0" src="https://live.csdn.net/v/embed/348339" allowfullscreen="true" data-mediaembed="csdn" style="width: 100%; aspect-ratio: 2;"></iframe></div>
<hr>
<h3 id="解题思路">解题思路：</h3>
<p>1、浅浅的看了一遍，没发现什么有用的内容。放到Kinovea中，慢倍速看了一遍，发现四个二维码。（我真的没想到还有第四个二维码，找了半天都没有，结果是Kinovea自动去掉了最后的一个片段，害苦我了，最后是用Microsoft Clipchamp找到的，点赞）</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-bash" data-lang="bash"><span class="line"><span class="cl">key1:i
</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/20251228191740591.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191740591.png" 
             alt="在这里插入图片描述" 
              
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        />
    </a>
</div></p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191743186.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191743186.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></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-bash" data-lang="bash"><span class="line"><span class="cl">key2:want
</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/20251228191745372.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191745372.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191747483.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191747483.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></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-bash" data-lang="bash"><span class="line"><span class="cl">key3:play
</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/20251228191749090.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191749090.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191751386.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191751386.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></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-bash" data-lang="bash"><span class="line"><span class="cl">key4:ctf
</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/20251228191753110.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191753110.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191755237.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191755237.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<p>连接起来，得到key（而不是flag）。</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-bash" data-lang="bash"><span class="line"><span class="cl">iwantplayctf
</span></span></code></pre></td></tr></table>
</div>
</div><p>2、提交flag无果后，开始尝试其他的方向。在010Editor中，在文件的最后发现一串经过Base64编码的字符串，解密的内容如下，感觉是rar压缩包的数据。</p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191757389.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191757389.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191759584.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191759584.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<p>使用在线网站，直接解密并另存为rar文件。</p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191801364.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191801364.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </a>
</div></p>
<p>3、使用之前得到的key作为密码，解压rar压缩包，得到flag.txt文件，打开文件得到flag。</p>
<p>
<div class="post-img-view">
    <a data-fancybox="gallery" href="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191803558.png">
        <img src="https://cdn.jsdelivr.net/gh/yuexuan521/image/20251228191803558.png" 
             alt="在这里插入图片描述" 
              
             loading="lazy"
        />
    </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>CTF-from-RuMen-to-RuYuan<span class="o">}</span>
</span></span></code></pre></td></tr></table>
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