https://picoctf-writeup.pinjim.dev/tags/challenge-library-exclusive/Recent content in Challenge Library Exclusive on picoCTF WriteupHugoen-usSun, 12 Jul 2026 23:50:00 +0800https://picoctf-writeup.pinjim.dev/posts/general-skills/first-find/Sun, 12 Jul 2026 23:50:00 +0800https://picoctf-writeup.pinjim.dev/posts/general-skills/first-find/<h2 id="題目連結">題目連結</h2> <p><a href="https://learn.cylabacademy.org/library/320">https://learn.cylabacademy.org/library/320</a></p> <h2 id="題目解法">題目解法</h2> <p>題目目標是找到 <code>uber-secret.txt</code> 這個檔案，在 linux 找檔案可以使用 <code>find</code> 這個指令，下載並解壓縮檔案後，使用以下指令尋找 <code>uber-secret.txt</code> 檔案。</p> <pre tabindex="0"><code>$ find -name uber-secret.txt ./adequate_books/more_books/.secret/deeper_secrets/deepest_secrets/uber-secret.txt </code></pre><p>找到檔案後使用 <code>cat</code> 讀取</p> <pre tabindex="0"><code>$ cat ./adequate_books/more_books/.secret/deeper_secrets/deepest_secrets/uber-secret.txt picoCTF{f1n---------------fd1} </code></pre>https://picoctf-writeup.pinjim.dev/posts/general-skills/big-zip/Sun, 12 Jul 2026 23:00:00 +0800https://picoctf-writeup.pinjim.dev/posts/general-skills/big-zip/<h2 id="題目連結">題目連結</h2> <p><a href="https://learn.cylabacademy.org/library/322">https://learn.cylabacademy.org/library/322</a></p> <h2 id="題目解法">題目解法</h2> <p>解壓縮後會得到非常多 <code>.txt</code> 檔案以及許多子目錄，根據提示知道要使用 <code>grep</code> 指令，<code>grep</code> 指令加上 <code>-r</code> 參數會遞迴的尋找目錄中以及所有子目錄中的所有檔案中是否有目標。</p> <pre tabindex="0"><code>$ grep -r &#34;pico&#34; folder_pmbymkjcya/folder_cawigcwvgv/folder_ltdayfmktr/folder_fnpfclfyee/whzxrpivpqld.txt:information on the record will last a billion years. Genes and brains and books encode picoCTF{gr3----------------0dc} </code></pre>