26 May 2025
Thanks. The CTF was better than ever, in terms of quantity and diversity of problems as well. It was intense! #pfy
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2 Jun 2024
Barbisaurus was zero width Unicode in the challenge text itself. They didn't lie, it wasn't in the image at all. Barbie3 was evil whitespace at the end of the file, tabs and spaces black pixels, crlf white, get the width right (800), and the image is the flag.
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2 Jun 2024
Thanks, nice, some quick spoilers for some ones you didn't write up. Spill the tea was an http2 rapid reset style vuln. Dream card 3, the transaction IDs in the sqlite were compressed data that can be reassembled to form a gimp image file, which contained the flag
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Good writeups on a lot of the @LayerOneCTF challenges.
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30 May 2023
A big thanks to @_Kybr_ and @mainframed767 for providing several challenges to our LayerOneCTF this year.
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18 May 2023
“Just tell yourself, Duckie, you’re really quite lucky!”
You just found a flag to the 2023 LayerOne CTF!
LayerOneCTF{Freebie}
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11 Apr 2023
Capture the Flag, one of our most competitive and fun events, is back for 2023! layerone.org/capture-the-fla… Thanks to all the folks @LayerOneCTF for their tireless work! Register now at layerone.org/registration/
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4 Aug 2022
With contributions by over 5 different folks and challenge formats tested at @LayerOneCTF and other competitions, this should be a great time. Great entry to #MachineLearning #Security or way to prove yourself.
Special thanks to @BenevOrang for a particularly creative challenge.
4 Aug 2022
The AI Village is proud to announce our CTF for @defcon 30. Evade, poison, steal, and otherwise hack AI and ML systems. There'll be something for everybody, so check it out. Follow for more details.
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1 Jun 2022
LayerOneCTF appreciates @TinkerSec for allowing us to use his pin pad photo in one of our challenges. Thanks!
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28 May 2022
LayerOneCTF would like to thank a couple guest creators for some of the challenges in today's CTF: @waldoirc and @josephtlucas.
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31 May 2021
I need to finally make a site some day to put my stuff there. But! The way I would do this is to query for icmp, adding the "Data" as a column, and export to a CSV from File -> Export Packet Dissections
Then: cat file.csv | cut -d',' -f14 | sed -n '1!p' | xxd -p -r | base64 -d
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31 May 2021
For anyone who didn't finish the Deathball challenge series at @LayerOneCTF and was curious, here's the map of our pseudo-randomly generated network REPL container labyrinth:
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31 May 2021
Did @LayerOneCTF this weekend. I got lucky and was able to be first submitter for a couple of flags.
I thought it was really accessible and fun. If you haven't done a CTF before or haven't done many, this is one to look for next year.
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30 May 2021
@LayerOneCTF at @layer_one was pretty fun this year. My first time submitting a CTF challenge to a big conference CTF :D Hope you liked the Planet Express Forensics!
Thank you @kur3us
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30 May 2019
That was really fun! I loved the interface and the way the challenges were presented. Definitely in the calendar for next year. Whoever put that together must be brilliant! 😉
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