https://theromanxpl0.it/tags/hard/Recent content in Hard on TheRomanXpl0itHugoen-usinfo@theromanxpl0.it (TRX)info@theromanxpl0.it (TRX)<a href="https://creativecommons.org/licenses/by-nc/4.0/" target="_blank" rel="noopener">CC BY-NC 4.0</a>Sat, 11 Jul 2026 06:39:25 +0200https://theromanxpl0.it/posts/2026/06/def-con-ctf-qualifier-2026-birdhouse/Tue, 02 Jun 2026 00:00:00 +0000info@theromanxpl0.it (TRX)https://theromanxpl0.it/posts/2026/06/def-con-ctf-qualifier-2026-birdhouse/<h1 id="birdhouse">Birdhouse</h1> <h2 id="initial-analysis">Initial Analysis</h2> <p>Loading the ROM into an emulator (ares) showed a fairly standard N64 game (like Minecraft). We first tried attaching to the integrated gdb server for debugging purposes, but that didn&rsquo;t work too well, so we turned to inspecting the ROM structure directly.</p> <p><img src="https://theromanxpl0.it/defconquals2026/birdhouse/screenshot.png" alt="screenshot"></p> <p>Examining the binary revealed the presence of a DragonFS filesystem, identified by the <code>TOC0</code> signature. DragonFS is commonly used by libdragon projects to package assets and executable components into the ROM image.</p>