> For the complete documentation index, see [llms.txt](https://jedi.gitbook.io/jedi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://jedi.gitbook.io/jedi/ctf-archive/downunderctf-2025.md). # DownUnderCTF 2025 After quite a long hiatus from playing CTFs, I finally joined a competition again with the CSI team. Admittedly, I felt a bit rusty, and maybe my skills aren’t what they used to be, so I only managed to solve a few of the easier and more straightforward challenges. Still, diving back into the world of CTFs reminded me how fun and intriguing it all is. I found myself enjoying the process again, so I thought I’d share a short writeup of the problems I managed to crack. Don't forget to check DownUnderCTF 2025 full Files + Solution here : --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://jedi.gitbook.io/jedi/ctf-archive/downunderctf-2025.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.