$ echo "776F6C6E6F" | xxd -r -p
wolno
$ echo "d29sbm8=" | base64 -d
wolno
$ echo "jbyab" | tr a-zA-Z n-za-mN-ZA-M
wolno
Four encodings. Four stages. One word at the end of each chain.
The word persists through every transformation. That's the point.
Try the initiation: https://776f6c6e6f.org/initiation/
Learn something new every day! Today's lesson: a fundamental difference between x86 and ARM is how the return address for a function call is passed. The x86 CALL puts it on the stack, while ARM puts it not on the stack but in a register (Link Register LR, X30).
Now today's lesson comes from TAMUCTF2026, and it is about MIPS. There, the return address is also passed as register, just like on ARM. On MIPS, it's the Return Address register ($RA / $31).
The last wave for today for BSidesSF #CTF is out now, hope you have fun solving the challenges! We will have 2 more waves tomorrow at 9:00AM and 10:30AM PDT.
Join us at https://ctf.bsidessf.net and join the chatter on Discord at discord.gg/dCFQ5XAaQC.
We are proud to be at ZeroDays CTF today as a community supporter.
Conor and Isabelle are on the TOG stand teaching lockpicking and hosting two CTF challenges throughout the day. It is great to bring a bit of hands on making and problem solving into the event, and to meet so many people from across the security community.
If you are at ZeroDays in Croke Park today, drop over and say hello to the team.
#ZeroDaysCTF #TOGHackerspace #Lockpicking #CTF #CyberSecurity
Spent the night at Insomni'hack and had a blast — huge thanks to the organisers for putting together such a great event. Awesome challs and a seriously solid setup. @1ns0mn1h4ck
#insomnihack #insomnihack2026 #CTF #OCD #OrangeCyberDefense #CTFTime
Project Helix Walkthrough: Blue Team CTF
Get to know the minds behind this year's CTF competition as our new organizers #BenevolentBureauofBirds guest on the #CTFRadiooo podcast. Backstory, process and some peeks into the coming contest.
It's beginning to feel a lot like #defcon 🎶
WOLNO — 776F6C6E6F
hubertf
BSidesSF
Tog Hackerspace
Jeffrey Roe
Nicolas Borboën
HackerWorkspace
💾 Paweł Łukasik
DEF CON