https://ntninja.com/tags/rundll/Recent content in Rundll on NTNINJAHugo -- gohugo.ioen© 2026 Ryan JohnsonSun, 25 Sep 2022 09:00:00 -0500https://ntninja.com/posts/rundll-fundll/Sun, 25 Sep 2022 09:00:00 -0500https://ntninja.com/posts/rundll-fundll/<p>Have you ever written a DLL that had standalone functionality and wasn&rsquo;t meant to be used as a library? Considering that library is in the name, this idea seems contrary to what a library should be. Well, you can thank Microsoft for providing a way to execute standalone functionality from a DLL. Not only did they do that, they also provide DLLs with functionality that you need this utility to run!!! Say hello to rundll32, pronounced run dull all smashed as one word in some circles.</p>