https://ntninja.com/tags/.net/Recent content in .Net on NTNINJAHugo -- gohugo.ioen© 2026 Ryan JohnsonWed, 28 Sep 2022 09:00:00 -0500https://ntninja.com/posts/dotnet-deserialization-challenge1/Wed, 28 Sep 2022 09:00:00 -0500https://ntninja.com/posts/dotnet-deserialization-challenge1/<h2 class="relative group"><a href="https://ntninja.com/downloads/challenges/deserialization_challenge1.zip" >Challenge Download</a> <div id="challenge-download" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#challenge-download" aria-label="Anchor">#</a> </span> </h2> <p>In this challenge you are given a single binary. The binary can simply take in user input to serialize an object to a file or take in a file and deserialize the object and print the contents. Your goal is to get arbitrary command execution using any tools necessary from the binary.</p> <p>Good Luck!</p>https://ntninja.com/posts/dotnet-deserialization-challenge2/Wed, 28 Sep 2022 09:00:00 -0500https://ntninja.com/posts/dotnet-deserialization-challenge2/<h2 class="relative group"><a href="https://ntninja.com/downloads/challenges/deserialization_challenge2.zip" >Challenge Download</a> <div id="challenge-download" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#challenge-download" aria-label="Anchor">#</a> </span> </h2> <h2 class="relative group">Wacky File Transfer <div id="wacky-file-transfer" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#wacky-file-transfer" aria-label="Anchor">#</a> </span> </h2> <p>In this challenge you are presented with the Wacky File Transfer client <code>wft_client.exe</code> and Wacky File Transfer server <code>wft_server.exe</code>. The helper library <code>wft_helpers.dll</code> that is used by both the client and the server is also included and must be present in the same directory as the client or server to execute them.</p>