<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>Mortal - Little Steps of Growth</title><description>网络安全学习者 / CTF 选手的学习记录</description><link>https://aaaa521.github.io/mortal-blog/</link><language>zh-CN</language><item><title>你好，世界：博客开张</title><link>https://aaaa521.github.io/mortal-blog/posts/hello-world/</link><guid isPermaLink="true">https://aaaa521.github.io/mortal-blog/posts/hello-world/</guid><description>折腾了一下午，这个站终于跑起来了。第一篇就随便聊聊为什么要开博客，以及之后打算写什么。</description><pubDate>Thu, 15 Oct 2026 00:00:00 GMT</pubDate><category>随笔</category><category>随笔</category><category>博客</category></item><item><title>フラグの恋：一道没做出来的编码题</title><link>https://aaaa521.github.io/mortal-blog/posts/flag-no-koi/</link><guid isPermaLink="true">https://aaaa521.github.io/mortal-blog/posts/flag-no-koi/</guid><description>唯一没解出来的题，也就是这篇。记录两条失败的思路，以及事后复盘出的方法论问题。</description><pubDate>Mon, 12 Oct 2026 00:00:00 GMT</pubDate><category>Misc</category><category>CTF</category><category>编码</category><category>隐写</category><category>未解出</category><category>TSCTF</category></item><item><title>TSCTF-J 2026 参赛总结</title><link>https://aaaa521.github.io/mortal-blog/posts/tsctfj-2026-review/</link><guid isPermaLink="true">https://aaaa521.github.io/mortal-blog/posts/tsctfj-2026-review/</guid><description>第一次系统性地打完一场 CTF。八道题的复盘索引，以及一些关于&quot;会做&quot;和&quot;做出来&quot;之间差距的感想。</description><pubDate>Mon, 12 Oct 2026 00:00:00 GMT</pubDate><category>随笔</category><category>CTF</category><category>总结</category><category>TSCTF</category></item><item><title>vanishing-bear：让 YOLO 看不见那只熊</title><link>https://aaaa521.github.io/mortal-blog/posts/vanishing-bear/</link><guid isPermaLink="true">https://aaaa521.github.io/mortal-blog/posts/vanishing-bear/</guid><description>在 5 项像素约束下做对抗样本，让 YOLOv8n 和 YOLO11n 都检测不到任何物体。踩了 8 个版本的坑，最后发现瓶颈根本不在幅度上。</description><pubDate>Mon, 12 Oct 2026 00:00:00 GMT</pubDate><category>AI Security</category><category>CTF</category><category>对抗样本</category><category>YOLO</category><category>目标检测</category><category>TSCTF</category></item><item><title>共署：用 Walsh–Hadamard 变换反推联邦水印</title><link>https://aaaa521.github.io/mortal-blog/posts/federated-watermark/</link><guid isPermaLink="true">https://aaaa521.github.io/mortal-blog/posts/federated-watermark/</guid><description>六家机构的记录经过 FedAvg 水印注入后累加进模型检查点，还有两轮数据被污染。从 17 个检查点里把原始记录挖出来。</description><pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate><category>AI Security</category><category>CTF</category><category>联邦学习</category><category>水印</category><category>线性代数</category><category>TSCTF</category></item><item><title>liar&apos;s bar：跟 AI 玩心理战，越消极越稳</title><link>https://aaaa521.github.io/mortal-blog/posts/liars-bar/</link><guid isPermaLink="true">https://aaaa521.github.io/mortal-blog/posts/liars-bar/</guid><description>接入 AI 玩&quot;骗子酒吧&quot;式的博弈游戏，赢下对局拿 flag。零指令先让它跑一遍，再给个消极策略，temperature 调 0。</description><pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate><category>AI Security</category><category>CTF</category><category>LLM</category><category>提示词</category><category>博弈</category><category>TSCTF</category></item><item><title>PlayIt：pwntools 连远程数独，然后手搓太累</title><link>https://aaaa521.github.io/mortal-blog/posts/playit/</link><guid isPermaLink="true">https://aaaa521.github.io/mortal-blog/posts/playit/</guid><description>一道交互式 Misc 题。用 pwntools 连上去能手动填，但填到第二盘就烦了，于是写了个回溯求解器自动提交。</description><pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate><category>Misc</category><category>CTF</category><category>pwntools</category><category>数独</category><category>交互</category><category>TSCTF</category></item><item><title>RejectIt：给大模型做一次 rank-1 权重手术</title><link>https://aaaa521.github.io/mortal-blog/posts/rejectit/</link><guid isPermaLink="true">https://aaaa521.github.io/mortal-blog/posts/rejectit/</guid><description>提交一个 delta.npy，让 Qwen2.5-1.5B-Instruct 对任何问题都拒答。核心是 rank-1 低秩编辑，难点在 Q6_K 量化的精确复现。</description><pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate><category>AI Security</category><category>CTF</category><category>LLM</category><category>权重编辑</category><category>量化</category><category>TSCTF</category></item><item><title>base_family：三层编码套娃与 Bitcoin Base58</title><link>https://aaaa521.github.io/mortal-blog/posts/base-family/</link><guid isPermaLink="true">https://aaaa521.github.io/mortal-blog/posts/base-family/</guid><description>一个 17KB 的 MinGW 逆向题，藏了自定义 Base64、XOR 隐藏 blob 和比特币 Base58。题面提示是&quot;茴字有多少种写法&quot;。</description><pubDate>Sat, 10 Oct 2026 00:00:00 GMT</pubDate><category>Reverse</category><category>CTF</category><category>逆向</category><category>PE</category><category>Base58</category><category>TSCTF</category></item><item><title>The Thirteen Seals of RSA：13 关 RSA 弱点串烧</title><link>https://aaaa521.github.io/mortal-blog/posts/rsa-thirteen-seals/</link><guid isPermaLink="true">https://aaaa521.github.io/mortal-blog/posts/rsa-thirteen-seals/</guid><description>13 个关卡、13 种经典 RSA 弱点，从明文太小到 p⊕q 泄露。做完这题等于把 CryptoHack 的 RSA 章节手动过了一遍。</description><pubDate>Fri, 09 Oct 2026 00:00:00 GMT</pubDate><category>Crypto</category><category>CTF</category><category>RSA</category><category>密码学</category><category>TSCTF</category></item></channel></rss>