We’ve just published the blog post for this year’s infra setup! 🔥 You can check it out here at https://downunderctf.com/blog/2025/infra-writeup/

And as promised, noCTF has now been open-sourced 📂 at https://github.com/noctf-project/noCTF

A huge shoutout to Justin Steven and our platinum sponsor Tanto Security for pen-testing our scoreboard, their contributions were truly invaluable to the success of the project. If you're curious, you can check out Tanto's blog post at https://tantosec.com/blog/2025/09/downunderctf-noctf-scoreboard-pentest-report/

Our digital vines have delivered the news! The prize winners of DownUnderCTF6 have been crowned! 🏆🦜

From phishing traps to logic leaps, these cyber-explorers conquered the wild!

A special shoutout to team [VuwCTF] empl*yment, who took 1st place in two prize categories! Talk about double trouble! 🥇🥇

Swing over to the prize winner graphic to see who made it out of the jungle with the treasure and check out our write up prize winners!

🏆 Best Writeup: siunam
https://siunam321.github.io/ctf/DownUnderCTF-2025/web/sodium/

🫨 Best writeup with unintended: Amogh E M
https://github.com/typicallhavok/CTF/blob/main/Writeups/DownUnderCTF/mutant.md

😆 Most entertaining writeup: sans175
https://saanrhyne.com/posts/grannie-writeup/

And one final thunderous thank you to our Platinum Sponsor this year — Tanto Security! 🐘✨ Like the mighty elephant leading the herd, Tanto stands tall in the jungle of greatness. They’re an incredible company you should definitely swing by and check out!

Explore more! -> https://tantosec.com/

✨ Write Up Prize submission form is now open! ✨

You've survived a wild 48-hour adventure deep in the hacking jungle... now it’s time to roar louder than the rest! 🐯🌿

Swing into action and submit your expedition logs for a shot at snatching the golden bounty—AUD$100—in one of these mighty categories:

🏆 Best Write-Up
🫨 Best Unintended Solution
😆 Most Entertaining Write-Up

But beware! The jungle gates close 27th July at 11:59pm AEST! Don’t miss your chance to leave your mark on the canopy!

Submit your write up here -> https://forms.gle/vA48AN5qgp8RFbrs8

DownUnderCTF 6 Challenges & Solutions:

https://github.com/DownUnderCTF/Challenges_2025_Public

And just like that… DownUnderCTF 6 has come to a close. 🌿
A huge thank you to everyone who took part — whether you replied to one or more emails or just vibed with E-Dog , we’re grateful to have shared another incredible 48 hours of puzzles, chaos, and creativity with you. 💚

We’re also pleased to report that the jungle server room has been heroically restored 🙏 and some new faces have moved in ❤️

We hope you enjoyed the adventure as much as we did running it!

CERTIFICATES
🎓 Don’t forget to grab your official DownUnderCTF 6 certificate — a shiny token of your exploration and skill
👉 https://certificates.2025.ductf.dev/

FEEDBACK
We would love to hear from you! Your experience, you ups or downs! Please share it with us at https://duc.tf/feedback🗒️

POST CTF SUBMISSION OF FLAGS
You can still submit flags - they will just not add to the scoreboard 🙂

TOP INTERNATIONAL TEAMS
The scoreboard finished strong with the following top international teams!
🥇 BunkyoWesterns
🥈 r3kapig
🥉 Kalmarunionen

And with the competition over, feel free to discuss challenges, share insights, or just hang out and decompress. You’ve earned it!

📬⏳ ONLY ONE HOUR LEFT — The Jungle is on the Brink! 📬⏳

The final vines are swaying, the monkeys are screaming (probably in binary), and DownUnderCTF 6 is down to its last wild hour! 🐒💻

Who will emerge from the foliage as victorious flag-hunters and email responders? There's still time to swing in with one last submission... or just take a deep breath, vibe with E-Dog, and let the jungle winds carry you. 🌴🎶

Remember: The tides of battle can shift faster than a caffeinated kiwi — anything can happen in these last moments! ⚡

Check your flags and refresh the scoreboard!

Check us out at https://2025.duc.tf/ and play now!

🚩 The flags are flagging… but not for long! ⏳

As DownUnderCTF 6 swings toward the final vines of closure, we want to take a moment to shine a massive spotlight (powered by jungle Wi-Fi) on someone who brought serious visual firepower to this adventure. 🔥🌿

🎨 Huge thanks to Serena for commissioning the absolutely epic graphics that gave this year’s CTF its wild, wonderful vibe! From the legendary E-Dog (woof!) to the pixel-perfect jungle server room, her artwork made the madness look as good as it felt.

Seriously — the E-Dog deserves its own animated series. 🐶💻💥

Want to see more of Serena’s incredible work? Of course you do. Check it out here:

Instagram/X - @deafrenitely
https://www.instagram.com/deafrenitely/
https://x.com/deafrenitely

There is still time to play -> https://2025.duc.tf

⏰ DownUnderCTF 6: The Final Hours Are Upon Us! ⏰

Less than 6 hours remain before the canopy falls silent and we uncover whether the ancient secrets of the jungle have truly been laid to rest. 🕵️‍♂️🦜

The vines are whispering, the monkeys are placing bets, and the final rituals of DownUnderCTF 6 are underway. 🌿✨

Dare to peek at the sacred scoreboard? 👉 https://2025.duc.tf/scoreboard

There's still time to make your mark! 🐾

Complete a challenge, unearth a flag, and get the opportunity to earn a sleek certificate! It’s proof that you braved the unknown and lived to tell the tale! 🎖️📜

Before the server shuts down, clear out those inboxes! 📤

Start your final expedition now:
👉 https://2025.duc.tf