This year, we didn't just give you a piece of PCB with your name on it. We handed you a fully functional, portable CTF disguised as a Cyberpunk Bunny. Powered by an ESP32, this little piece of hardware is packed with cryptography, wireless hacking, and hidden secrets.
Consider this your official field guide. Here is what you need to know to hack your badge:
Got a burning question? Not sure if your exploit will work or if you should push to production on a Friday? Give the badge a firm shake. The onboard accelerometer will trigger a hacker-themed Magic 8-Ball response. Let the cyber-fates decide your next move.
Keep shaking. There’s a 10% chance the bunny will throw a glitch in the matrix—a Mystery Encrypted Message. Use the D-pad buttons to select the correct decryption method. Crack the initial cipher to unlock the hidden CTF menus:
The Basic Tier: Test your knowledge of old-school, classic ciphers.
The Advanced Tier: Fire up your terminal. You'll need to defeat Base32, XOR, AES-128, and ChaCha20 to capture these flags.
You can’t survive cyberspace alone. Dive into the Bluetooth (BLE) Co-op mode to interact with other attendees around you
We will leave you with a rumor: the hardware engineers left a backdoor. They say if you find the exact, secret "shaking sequence", the hardware will trigger a total meltdown and surrender its ultimate, forbidden flag.
Can you light up the bunny's eyes in full rainbow mode by owning every challenge?
Hack the planet, make some friends, and enjoy BSidesSD!