https://b17fr13nds.github.io/tags/heap/Recent content in Heap on bitfriends' blogHugoenFri, 18 Oct 2024 18:50:53 +0200https://b17fr13nds.github.io/posts/brics_chains/Fri, 18 Oct 2024 18:50:53 +0200https://b17fr13nds.github.io/posts/brics_chains/<p>Two weeks ago, I played BRICS CTF with r3kapig, and we ranked 1st! Chains was one of the challanges I solved.</p> <p>We were given a program to add/remove proxies and chains. Upon executing we&rsquo;re presented with:</p> <pre tabindex="0"><code>1. Add Proxy 2. Delete Proxy 3. Add Chain 4. View Chain 5. Delete Chain 6. Exit </code></pre><p>That resembles a typical heap challenge. It turns out to be one, since the following structures are getting allocated dynamically:</p>