https://manabu7696.github.io/tags/ais3/Recent content in AIS3 on 学的斜槓日記Hugo -- gohugo.iozh-TWMon, 19 Aug 2024 20:00:00 +0800https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/Mon, 19 Aug 2024 20:00:00 +0800https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/<img src="https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/page.png" alt="Featured image of post AIS3 2024 pre-exam write-up" /><h2 id="welcome">Welcome </h2><p><img src="https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/welcome.png" width="1020" height="596" srcset="https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/welcome_hu_e54df4be47d53bf1.png 480w, https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/welcome_hu_dae3144566b62cd3.png 1024w" loading="lazy" alt="Welcome題目敘述" class="gallery-image" data-flex-grow="171" data-flex-basis="410px" ></p> <p>flag即在題目敘述中</p> <h2 id="three-dimensional-secret">Three Dimensional Secret </h2><p>將檔案下載下來解壓縮可以發現是wireshark的檔案</p> <p>可以發現主要的通訊是TCP協議，利用follow功能可以看到傳輸了什麼東西</p> <p>由傳輸內容可以發現是使用Cura生成的gcode</p> <p>將其內容寫入一個新檔案並將其副檔名設為.gcode</p> <p>在cura import這個檔案即可獲得flag</p> <h2 id="emoji-console">Emoji Console </h2><p>利用cat及萬用字元可以發現目錄下有一個叫flag的目錄及拿到python源代碼，同時可以知道各種表情符號所代表的文字</p> <p><img src="https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/command1.png" width="1783" height="726" srcset="https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/command1_hu_14d3c990d3887727.png 480w, https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/command1_hu_60ae17e18ec86944.png 1024w" loading="lazy" alt="cat *" class="gallery-image" data-flex-grow="245" data-flex-basis="589px" ></p> <p>構建如下指令後可以發現，flag下有個可以讀flag的python檔</p> <p><img src="https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/command2.png" width="1776" height="735" srcset="https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/command2_hu_27ce4f590312e3bb.png 480w, https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/command2_hu_5985a9800beee841.png 1024w" loading="lazy" alt="cd flag;pip:|cat *" class="gallery-image" data-flex-grow="241" data-flex-basis="579px" ></p> <p>因此利用以下指令即可讀到flag</p> <p><img src="https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/command3.png" width="1790" height="722" srcset="https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/command3_hu_a806db9755a3874e.png 480w, https://manabu7696.github.io/p/ais3_2024_pre-exam_writeup/image/command3_hu_85c1f217b6691b56.png 1024w" loading="lazy" alt="cd flag;pip:|python *" class="gallery-image" data-flex-grow="247" data-flex-basis="595px" ></p>