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atom.xml
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<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<title>zzzzz</title>
<icon>https://zsy-arch.github.io/icon.png</icon>
<link href="https://zsy-arch.github.io/atom.xml" rel="self"/>
<link href="https://zsy-arch.github.io/"/>
<updated>2024-11-06T11:37:58.249Z</updated>
<id>https://zsy-arch.github.io/</id>
<author>
<name>zsy</name>
</author>
<generator uri="https://hexo.io/">Hexo</generator>
<entry>
<title>Frida在J2SE上的基本使用</title>
<link href="https://zsy-arch.github.io/2024/11/06/Frida%E5%9C%A8J2SE%E4%B8%8A%E7%9A%84%E5%9F%BA%E6%9C%AC%E4%BD%BF%E7%94%A8/"/>
<id>https://zsy-arch.github.io/2024/11/06/Frida%E5%9C%A8J2SE%E4%B8%8A%E7%9A%84%E5%9F%BA%E6%9C%AC%E4%BD%BF%E7%94%A8/</id>
<published>2024-11-06T11:25:44.000Z</published>
<updated>2024-11-06T11:37:58.249Z</updated>
<summary type="html"><h1 id="Frida-server"><a href="#Frida-server" class="headerlink" title="Frida server"></a>Frida</summary>
<category term="Frida" scheme="https://zsy-arch.github.io/tags/Frida/"/>
</entry>
<entry>
<title>2024DASCTF夏季PWN</title>
<link href="https://zsy-arch.github.io/2024/07/24/2024DASCTF%E5%A4%8F%E5%AD%A3PWN/"/>
<id>https://zsy-arch.github.io/2024/07/24/2024DASCTF%E5%A4%8F%E5%AD%A3PWN/</id>
<published>2024-07-24T11:53:33.000Z</published>
<updated>2024-07-24T11:58:15.872Z</updated>
<summary type="html"><h1 id="springboard"><a href="#springboard" class="headerlink" title="springboard"></a>springboard</h1><p>格式化字符串漏洞，且字符串不在栈上的类型：</p>
<p>通过任意地址写，将main函数的ret addr改为one gadget即可。</p></summary>
<category term="ctf" scheme="https://zsy-arch.github.io/tags/ctf/"/>
<category term="pwn" scheme="https://zsy-arch.github.io/tags/pwn/"/>
</entry>
<entry>
<title>2024春秋杯PWN</title>
<link href="https://zsy-arch.github.io/2024/07/15/2024%E6%98%A5%E7%A7%8B%E6%9D%AFPWN/"/>
<id>https://zsy-arch.github.io/2024/07/15/2024%E6%98%A5%E7%A7%8B%E6%9D%AFPWN/</id>
<published>2024-07-15T14:29:20.000Z</published>
<updated>2024-07-15T14:44:51.101Z</updated>
<summary type="html"><h1 id="stdout"><a href="#stdout" class="headerlink" title="stdout"></a>stdout</h1><p>main函数调用init：</p>
<figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="function"><span class="keyword">int</span> <span class="title">init</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>&#123;</span><br><span class="line"> setvbuf(<span class="built_in">stdout</span>, <span class="number">0LL</span>, <span class="number">0</span>, <span class="number">0LL</span>);</span><br><span class="line"> <span class="keyword">return</span> setvbuf(<span class="built_in">stdin</span>, <span class="number">0LL</span>, <span class="number">2</span>, <span class="number">0LL</span>);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<p>setvbuf第三个参数用来控制文件流的缓冲模式，可以在下面三个值中选择：</p>
<figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">#<span class="meta-keyword">define</span> _IOFBF <span class="comment">// argument to setvbuf indicating fully buffered I/O</span></span></span><br><span class="line"><span class="meta">#<span class="meta-keyword">define</span> _IOLBF <span class="comment">// argument to setvbuf indicating line buffered I/O</span></span></span><br><span class="line"><span class="meta">#<span class="meta-keyword">define</span> _IONBF <span class="comment">// argument to setvbuf indicating unbuffered I/O</span></span></span><br></pre></td></tr></table></figure></summary>
<category term="ctf" scheme="https://zsy-arch.github.io/tags/ctf/"/>
<category term="pwn" scheme="https://zsy-arch.github.io/tags/pwn/"/>
</entry>
<entry>
<title>编译Android系统及驱动</title>
<link href="https://zsy-arch.github.io/2024/07/06/%E7%BC%96%E8%AF%91Android%E7%B3%BB%E7%BB%9F%E5%8F%8A%E9%A9%B1%E5%8A%A8/"/>
<id>https://zsy-arch.github.io/2024/07/06/%E7%BC%96%E8%AF%91Android%E7%B3%BB%E7%BB%9F%E5%8F%8A%E9%A9%B1%E5%8A%A8/</id>
<published>2024-07-06T12:45:24.000Z</published>
<updated>2024-07-06T15:10:53.694Z</updated>
<summary type="html"><h1 id="1-引言"><a href="#1-引言" class="headerlink" title="1 引言"></a>1 引言</h1><p>简单记录了这三天来编译Android系统内核、驱动走过的路。遇到了很多坑和不懂的东西，为了下次少走些弯路所以简单总结下。横跨很多天的工作不免记忆模糊，如果参考本博客时遇到问题欢迎大家下方留言和指正。</p></summary>
<category term="Android" scheme="https://zsy-arch.github.io/tags/Android/"/>
<category term="Linux" scheme="https://zsy-arch.github.io/tags/Linux/"/>
</entry>
<entry>
<title>VMP1.1 逆向分析</title>
<link href="https://zsy-arch.github.io/2024/07/03/VMP1-1-%E9%80%86%E5%90%91%E5%88%86%E6%9E%90/"/>
<id>https://zsy-arch.github.io/2024/07/03/VMP1-1-%E9%80%86%E5%90%91%E5%88%86%E6%9E%90/</id>
<published>2024-07-03T08:39:09.000Z</published>
<updated>2024-07-06T12:45:42.547Z</updated>
<summary type="html"><h1 id="1-引言"><a href="#1-引言" class="headerlink" title="1 引言"></a>1 引言</h1><p>几年来，逆向一直停留在CTF坐牢水平，脱壳也就会用工具、最多说说原理。所以决定开始“深入”了解下脱VMP壳。当然，毕竟要循序渐进，我们还是从最简单的开始。这里我们选择了VMP1.1版本，自己编写简单的程序并用其加壳，将原程序与加壳后程序进行对比分析。</p></summary>
<category term="reverse" scheme="https://zsy-arch.github.io/tags/reverse/"/>
<category term="VMP" scheme="https://zsy-arch.github.io/tags/VMP/"/>
</entry>
<entry>
<title>Windows win32k 漏洞 & CVE-2021-1732 分析</title>
<link href="https://zsy-arch.github.io/2024/06/13/Windows-win32k-vuln-CVE-2021-1732/"/>
<id>https://zsy-arch.github.io/2024/06/13/Windows-win32k-vuln-CVE-2021-1732/</id>
<published>2024-06-13T15:39:33.000Z</published>
<updated>2024-06-13T15:42:04.725Z</updated>
<summary type="html"><h1 id="win32k漏洞"><a href="#win32k漏洞" class="headerlink" title="win32k漏洞"></a>win32k漏洞</h1><p>win32k.sys运行在Windows系统内核态，主要负责GUI相关的工作，用户态的user32.dll与其合作。个人感觉比较常见的漏洞对象在于tagWnd及其相关的数据结构和API。</p></summary>
<category term="Binary Security" scheme="https://zsy-arch.github.io/tags/Binary-Security/"/>
<category term="Windows kernel" scheme="https://zsy-arch.github.io/tags/Windows-kernel/"/>
</entry>
<entry>
<title>浅析 windows cve-2023-21768</title>
<link href="https://zsy-arch.github.io/2024/06/06/windows-cve-2023-21768/"/>
<id>https://zsy-arch.github.io/2024/06/06/windows-cve-2023-21768/</id>
<published>2024-06-06T12:35:18.000Z</published>
<updated>2024-06-06T13:07:46.377Z</updated>
<summary type="html"><h1 id="漏洞简介"><a href="#漏洞简介" class="headerlink" title="漏洞简介"></a>漏洞简介</h1><p>cve-2023-21768 是一个 Windows 11 22H2 系统中的本地权限提升漏洞，该漏洞源于AFD.sys这个模块。</p></summary>
<category term="Binary Security" scheme="https://zsy-arch.github.io/tags/Binary-Security/"/>
<category term="Windows kernel" scheme="https://zsy-arch.github.io/tags/Windows-kernel/"/>
</entry>
<entry>
<title>CISCN2024 Qual writeup</title>
<link href="https://zsy-arch.github.io/2024/05/20/CISCN2024-Qual-writeup/"/>
<id>https://zsy-arch.github.io/2024/05/20/CISCN2024-Qual-writeup/</id>
<published>2024-05-20T14:15:52.000Z</published>
<updated>2024-06-13T15:42:40.890Z</updated>
<summary type="html"><p>简单题是很水，没做出来的题也很让人崩溃。</p></summary>
<category term="ctf" scheme="https://zsy-arch.github.io/tags/ctf/"/>
<category term="reverse" scheme="https://zsy-arch.github.io/tags/reverse/"/>
</entry>
<entry>
<title>D^3CTF Reverse/车联网 Writeup</title>
<link href="https://zsy-arch.github.io/2024/04/30/D-3CTF-Reverse-%E8%BD%A6%E8%81%94%E7%BD%91-Writeup/"/>
<id>https://zsy-arch.github.io/2024/04/30/D-3CTF-Reverse-%E8%BD%A6%E8%81%94%E7%BD%91-Writeup/</id>
<published>2024-04-30T03:49:33.000Z</published>
<updated>2024-06-13T15:42:53.233Z</updated>
<summary type="html"><p>考完研第一次完整的参加一次CTF，考也没考上，ida咋用也忘干净了，还让队友掉出了前十。这就滚去学习re和iov。</p></summary>
<category term="reverse" scheme="https://zsy-arch.github.io/tags/reverse/"/>
<category term="IOV" scheme="https://zsy-arch.github.io/tags/IOV/"/>
</entry>
<entry>
<title>西湖论剑 2024 Reverse WriteUp</title>
<link href="https://zsy-arch.github.io/2024/02/04/%E8%A5%BF%E6%B9%96%E8%AE%BA%E5%89%91-2024-Reverse-WriteUp/"/>
<id>https://zsy-arch.github.io/2024/02/04/%E8%A5%BF%E6%B9%96%E8%AE%BA%E5%89%91-2024-Reverse-WriteUp/</id>
<published>2024-02-04T12:59:34.000Z</published>
<updated>2024-02-19T13:44:52.195Z</updated>
<summary type="html"><h1 id="MZ"><a href="#MZ" class="headerlink" title="MZ"></a>MZ</h1><p>使用IDAPython脚本进行一次搜索即可：</p></summary>
<category term="ctf" scheme="https://zsy-arch.github.io/tags/ctf/"/>
<category term="reverse" scheme="https://zsy-arch.github.io/tags/reverse/"/>
</entry>
<entry>
<title>Hello World</title>
<link href="https://zsy-arch.github.io/2023/06/06/hello-world/"/>
<id>https://zsy-arch.github.io/2023/06/06/hello-world/</id>
<published>2023-06-06T12:35:18.000Z</published>
<updated>2024-06-06T13:20:17.747Z</updated>
<summary type="html"><p><img src="/image-20211105151514789.png"</summary>
</entry>
<entry>
<title>DASCTF2022_11月赛</title>
<link href="https://zsy-arch.github.io/2022/11/29/DASCTF2022-11%E6%9C%88%E8%B5%9B/"/>
<id>https://zsy-arch.github.io/2022/11/29/DASCTF2022-11%E6%9C%88%E8%B5%9B/</id>
<published>2022-11-28T16:36:10.000Z</published>
<updated>2024-03-12T13:34:46.102Z</updated>
<summary type="html"><h1 id="babytea"><a href="#babytea" class="headerlink" title="babytea"></a>babytea</h1><p>这个题目用到了比较简单的TEA加密，但是使用异常处理来打乱了控制流。</p></summary>
<category term="reverse" scheme="https://zsy-arch.github.io/tags/reverse/"/>
<category term="writeup" scheme="https://zsy-arch.github.io/tags/writeup/"/>
</entry>
<entry>
<title>AES加密学习笔记</title>
<link href="https://zsy-arch.github.io/2022/10/22/AES%E5%8A%A0%E5%AF%86%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0/"/>
<id>https://zsy-arch.github.io/2022/10/22/AES%E5%8A%A0%E5%AF%86%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0/</id>
<published>2022-10-22T07:18:11.000Z</published>
<updated>2024-03-12T13:35:43.440Z</updated>
<summary type="html"><h1 id="AES128-ECB-分析"><a href="#AES128-ECB-分析" class="headerlink" title="AES128 ECB 分析"></a>AES128 ECB 分析</h1><h2 id="key-expansion"><a href="#key-expansion" class="headerlink" title="key expansion"></a>key expansion</h2><p>AES128 ECB的密钥拓展是将<code>Nk * 4</code>字节的密钥Key拓展为<code>(Nr + 1) * Nb * 4</code>字节的ExpKey。<br>ExpKey里面的数据分成了<code>(Nr + 1)</code>组，每一组就是用来和state相加的RoundKey。</p></summary>
<category term="Binary Security" scheme="https://zsy-arch.github.io/tags/Binary-Security/"/>
</entry>
<entry>
<title>Writeup - ASIS CTF 2022 Quals reverse [partial]</title>
<link href="https://zsy-arch.github.io/2022/10/20/Writeup-ASIS-CTF-2022-Quals-reverse-partial/"/>
<id>https://zsy-arch.github.io/2022/10/20/Writeup-ASIS-CTF-2022-Quals-reverse-partial/</id>
<published>2022-10-20T13:05:08.000Z</published>
<updated>2024-03-12T13:36:51.437Z</updated>
<summary type="html"><h1 id="traditional"><a href="#traditional" class="headerlink" title="traditional"></a>traditional</h1><h2 id="analysis"><a href="#analysis" class="headerlink" title="analysis"></a>analysis</h2><p>附件是一个无壳elf64和一个flag.enc文件，猜测是要对flag.enc文件进行解密。</p></summary>
<category term="reverse" scheme="https://zsy-arch.github.io/tags/reverse/"/>
<category term="writeup" scheme="https://zsy-arch.github.io/tags/writeup/"/>
</entry>
<entry>
<title>Windows kernel exploit - HEVD Stack Overflow</title>
<link href="https://zsy-arch.github.io/2022/10/03/Windows-kernel-exploit-HEVD-Stack-Overflow/"/>
<id>https://zsy-arch.github.io/2022/10/03/Windows-kernel-exploit-HEVD-Stack-Overflow/</id>
<published>2022-10-03T14:29:15.000Z</published>
<updated>2024-06-13T15:42:00.756Z</updated>
<summary type="html"><h1 id="HEVD-环境搭建"><a href="#HEVD-环境搭建" class="headerlink" title="HEVD 环境搭建"></a>HEVD 环境搭建</h1><p>安装Visual Studio 2022、cmake、git cli，然后从<a href="https://github.com/hacksysteam/HackSysExtremeVulnerableDriver">https://github.com/hacksysteam/HackSysExtremeVulnerableDriver</a> 下载源码，然后用内置的bat脚本编译即可。</p></summary>
<category term="Binary Security" scheme="https://zsy-arch.github.io/tags/Binary-Security/"/>
<category term="Windows kernel" scheme="https://zsy-arch.github.io/tags/Windows-kernel/"/>
</entry>
<entry>
<title>BUUOJ pwn刷题记录(持续更新)</title>
<link href="https://zsy-arch.github.io/2022/08/04/BUUOJ-pwn%E5%88%B7%E9%A2%98%E8%AE%B0%E5%BD%95/"/>
<id>https://zsy-arch.github.io/2022/08/04/BUUOJ-pwn%E5%88%B7%E9%A2%98%E8%AE%B0%E5%BD%95/</id>
<published>2022-08-04T15:22:47.000Z</published>
<updated>2024-03-12T13:35:34.573Z</updated>
<summary type="html"><h1 id="Stack-amp-ROP"><a href="#Stack-amp-ROP" class="headerlink" title="Stack &amp; ROP"></a>Stack &amp; ROP</h1><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">TODO....</span><br></pre></td></tr></table></figure>
<h2 id="not-the-same-3dsctf-2016"><a href="#not-the-same-3dsctf-2016" class="headerlink" title="not_the_same_3dsctf_2016"></a>not_the_same_3dsctf_2016</h2><p>checksec</p></summary>
<category term="ctf" scheme="https://zsy-arch.github.io/tags/ctf/"/>
<category term="pwn" scheme="https://zsy-arch.github.io/tags/pwn/"/>
</entry>
<entry>
<title>HWSCTF2022初赛WriteUp</title>
<link href="https://zsy-arch.github.io/2022/08/01/HWSCTF2022%E5%88%9D%E8%B5%9BWriteUp/"/>
<id>https://zsy-arch.github.io/2022/08/01/HWSCTF2022%E5%88%9D%E8%B5%9BWriteUp/</id>
<published>2022-08-01T15:37:30.000Z</published>
<updated>2024-03-12T13:38:06.885Z</updated>
<summary type="html"><h1 id="HWS2022-WriteUp"><a href="#HWS2022-WriteUp" class="headerlink" title="HWS2022 WriteUp"></a>HWS2022 WriteUp</h1><h2 id="reverse"><a href="#reverse" class="headerlink" title="reverse"></a>reverse</h2><h3 id="re1"><a href="#re1" class="headerlink" title="re1"></a>re1</h3><p>TEA变种，key为0x1234,0x2345, 0x4567, 0x6789, 直接对密文进行解密即可</p></summary>
<category term="ctf" scheme="https://zsy-arch.github.io/tags/ctf/"/>
<category term="writeup" scheme="https://zsy-arch.github.io/tags/writeup/"/>
</entry>
<entry>
<title>SCTF2019 babyre</title>
<link href="https://zsy-arch.github.io/2022/07/24/SCTF2019-babyre/"/>
<id>https://zsy-arch.github.io/2022/07/24/SCTF2019-babyre/</id>
<published>2022-07-24T15:33:52.000Z</published>
<updated>2024-03-12T13:37:44.203Z</updated>
<summary type="html"><h1 id="babyre"><a href="#babyre" class="headerlink" title="babyre"></a>babyre</h1><h2 id="附件"><a href="#附件" class="headerlink" title="附件"></a>附件</h2><ul>
<li>babygame</li>
</ul>
<h2 id="分析"><a href="#分析" class="headerlink" title="分析"></a>分析</h2><p>IDA打开,定位到main函数:</p></summary>
<category term="ctf" scheme="https://zsy-arch.github.io/tags/ctf/"/>
<category term="reverse" scheme="https://zsy-arch.github.io/tags/reverse/"/>
<category term="writeup" scheme="https://zsy-arch.github.io/tags/writeup/"/>
</entry>
<entry>
<title>ACTF2022 复现 2</title>
<link href="https://zsy-arch.github.io/2022/07/20/ACTF2022-%E5%A4%8D%E7%8E%B0-2/"/>
<id>https://zsy-arch.github.io/2022/07/20/ACTF2022-%E5%A4%8D%E7%8E%B0-2/</id>
<published>2022-07-20T02:53:01.000Z</published>
<updated>2024-03-12T13:36:08.920Z</updated>
<summary type="html"><h1 id="kcov"><a href="#kcov" class="headerlink" title="kcov"></a>kcov</h1><h2 id="附件"><a href="#附件" class="headerlink" title="附件"></a>附件</h2><ul>
<li>launch.sh</li>
<li>bzImage</li>
<li>rootfs.cpio.gz</summary>
<category term="ctf" scheme="https://zsy-arch.github.io/tags/ctf/"/>
<category term="reverse" scheme="https://zsy-arch.github.io/tags/reverse/"/>
</entry>
<entry>
<title>buuoj reverse crackMe</title>
<link href="https://zsy-arch.github.io/2022/07/17/buuoj-reverse-crackMe/"/>
<id>https://zsy-arch.github.io/2022/07/17/buuoj-reverse-crackMe/</id>
<published>2022-07-17T15:01:46.000Z</published>
<updated>2024-03-12T13:35:18.155Z</updated>
<summary type="html"><h1 id="crackMe"><a href="#crackMe" class="headerlink" title="crackMe"></a>crackMe</h1><h2 id="附件"><a href="#附件" class="headerlink" title="附件"></a>附件</h2><ul>
<li>crackme.exe</li>
</ul>
<h2 id="分析"><a href="#分析" class="headerlink" title="分析"></a>分析</h2><p>IDA定位到wmain函数</p></summary>
<category term="ctf" scheme="https://zsy-arch.github.io/tags/ctf/"/>
<category term="reverse" scheme="https://zsy-arch.github.io/tags/reverse/"/>
<category term="writeup" scheme="https://zsy-arch.github.io/tags/writeup/"/>
</entry>
</feed>