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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width">
<meta name="theme-color" content="#54C8C4" media="(prefers-color-scheme: light)">
<meta name="theme-color" content="#222" media="(prefers-color-scheme: dark)"><meta name="generator" content="Hexo 7.3.0">
<link rel="preconnect" href="https://fonts.googleapis.com" crossorigin>
<link rel="preconnect" href="https://cdnjs.cloudflare.com" crossorigin>
<link rel="apple-touch-icon" sizes="180x180" href="/images/180pixil-frame-0.png">
<link rel="icon" type="image/png" sizes="32x32" href="/images/32pixil-frame-0.png">
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<link rel="mask-icon" href="/images/pixil-frame-0.png.svg" color="#54C8C4">
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<h1 id="paper-reading-slap-data-speculation-attacks-via-load-address-prediction-on-apple-silicon">Paper
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<div class="note info"><p><em>Do you know</em></p>
<p>本人代码水平拙劣🥲，实现部分仅供参考</p>
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<p>赛时做了一题, 总觉得自己越来越没有心力和时间投入 CTF 了...
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<h1 id="git-send-email">git send-email</h1>
<p>当我们想发送一个 patch 时, 一般会使用 <code>git send-email</code>,
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<p>一次内核编译到运行的尝试</p>
<h1 id="编译内核">编译内核</h1>
<h2 id="拉取源码">拉取源码</h2>
<figure class="highlight bash"><table><tbody><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ git <span class="built_in">clone</span> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git</span><br></pre></td></tr></tbody></table></figure>
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<p>想给今年的 HGAME Mini
2025 出一道简单的 Pwn 题，突然想着之前的题目似乎没有涉及到 IoT
Pwn 的（虽然可能是因为不太算 pwn 的入门内容？），打算来一道比较简单的，正好学习一下 IoT 的相关知识吧。
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<p>程序设计课期末作业要求实现一个「基于可穿戴传感器数据的人体活动识别」，具体是实现一个分类任务。</p>
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<h1 id="easydma">EasyDMA</h1>
<p>From: ACTF 2025</p>
<p>题目给出一个去符号的 qemu 二进制文件
<code>qemu-system-x86_64</code>，启动参数如下</p>
<figure class="highlight sh"><table><tbody><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><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">#!/bin/sh</span></span><br><span class="line"><span class="built_in">timeout</span> --foreground 300 ./qemu-system-x86_64 \</span><br><span class="line"> -L pc-bios \</span><br><span class="line"> -m 1024 \</span><br><span class="line"> -kernel bzImage \</span><br><span class="line"> -initrd rootfs.cpio \</span><br><span class="line"> -drive file=null-co://,<span class="keyword">if</span>=none,<span class="built_in">id</span>=mydisk \</span><br><span class="line"> -device virtio-blk-pci,drive=mydisk,ioeventfd=off \</span><br><span class="line"> -device readflag \</span><br><span class="line"> -append <span class="string">"priority=low console=ttyS0"</span> \</span><br><span class="line"> -monitor /dev/null \</span><br><span class="line"> -nographic</span><br></pre></td></tr></tbody></table></figure>
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