BSidesSF CTF

Voting is enabled for #BSidesSF #CTF on CTFtime! Please do vote at ctftime.org/event/2721, by Sunday.

Thanks again to all the players and friends who helped connect us with the CTFTime admins and to the CTFTime admins for helping resolve this issue!

Thank you folks for playing this year's #BSidesSF #CTF. We'll be back again next year with more challenges!

All challenges will stay up until Sunday evening at ctf.bsidessf.net.

Source code at github.com/BSidesSF/ctf....

Write-ups at - www.skullsecurity.org, itsc0rg1.medium.com/bsidessf-202....

GitHub - BSidesSF/ctf-2025-release Contribute to BSidesSF/ctf-2025-release development by creating an account on GitHub.

As always, we've open sourced all our challenges at - github.com/bsidessf/ctf... #BSidesSF #CTF

Congrats to the top 3 teams - HammondFanClubTime, meow and Stanford Applied Cyber! Good game!! #BSidesSF #CTF

Less than 50 minutes to go, the top 3 teams are close, who will cinch first place? #BSidesSF #CTF

Check out the CTF at ctf.bsidessf.net

Hint Alert!

For digital-citizen-2, coppersmith is a must. Collect everything you learned from solving 1, identify all the possible "patterns" and then coppersmith to victory. #BSidesSF #CTF

Join us at ctf.bsidessf.net

Hint Alert!!

For slackblock-steg pay very close attention to what images the tool will accept to add a message to. Once you figure out what property images need to have, you should have a much better idea of how/where data is being hidden. #BSidesSF #CTF

Join us at ctf.bsidessf.net

Hint Alert!!

The acaan challenge is supposed to help prepare you for drago-daction.

drago-daction has a vulnerability that gives you a "write any data to any file at any offset" primitive, and once you're there they're the same solution. #BSidesSF #CTF

Check it out at ctf.bsidessf.net

1337 teams registered to play :D #BSidesSF #CTF

Join them at ctf.bsidessf.net

We've crossed 1300 registered users and 800 registered teams!

Join them at #BSidesSF #CTF - ctf.bsidessf.net/register.

New to CTFs and not sure how to get started? Check out #BSidesSF #CTF at ctf.bsidessf.net/getting-star....

We have several beginner friendly challenges and have walkthroughs for some of our 101 challenges. Good luck and have fun!

Smaug Treasure GIF ALT: Smaug Treasure GIF

Brave adventurers! The Dragon's CTF Keep unlocks its final secrets! Prepare for the last wave of challenges #BSidesSF #CTF

ctf.bsidessf.net

* magic
* pathing
* hoard
* extinction
* cipher-block-corruption
* tarnation
* extra-effed-system
* nearest-neighbor
* cert-tool

Over 1000 players and 600 teams registered and 48 challenges up at #BsidesSF #CTF

Join them at ctf.bsidessf.net

Spyro Waving GIF ALT: Spyro Waving GIF

Last wave for the day for #BSidesSF #CTF
* pascals-homomorphism-1
* pascals-homomorphism-2
* slackblock-steg
* amd
* dating
* goto-zero

Check out: ctf.bsidessf.net

New batch of challenges incoming!!
* taxonomy
* detector-2
* go-back

#BsidesSF #CTF
Check them out at - ctf.bsidessf.net

Just in time for lunch, 4 challenges hot off the grill -
web-tutorial-2
sighting
nextPM
oh-say-can-you-see

#BSidesSF #CTF

Check them out at - ctf.bsidessf.net

We have over 1000 players playing #BSidesSF #CTF. Join them and try your hand at solving our Crypto, Forensics, Pwnables, Web, Mobile and Misc challenges at ctf.bsidessf.net.

A big shout out to our sponsors Adobe!

Our lockpicking challenges are back! Check them out onsite at the #CTF area onsite at #BSidesSFCTF. We have some cool stickers for people that solve them!

Scoreboard at ctf.bsidessf.net

A new wave of challenges for #BSidesSF #CTF

Check them out ctf.bsidessf.net

crossworthy
bug-me
obscuratron
hidden-reports
hangman-two
evidence
subprime
dragon-spell
web-tutorial-1
dragon-name
ruthless-dot-flag-1
ruthless-dot-flag-2
qr-decomp (onsite only!)
locky (onsite only!)
boxy (onsite only!)

We just dropped 3 more challenges for today, we don't plan to release more for today. More to come tomorrow at 9am! #BSidesSF #CTF

Check out our Chrome Extension challenge, "moa-station", at ctf.bsidessf.net.

Oh the place you'll go, the scenes you will see.
Oh what is under the hidden box? Whatever could it be?
#BSidesSF #CTF

Join us at ctf.bsidessf.net

3 more challenges out now at ctf.bsidessf.net! #BSidesSF #CTF

* flag-search
* soothsayer
* arrow-of-time

And, we are off! Over 360 teams are playing with 13 teams on the scoreboard. #BSidesSF #CTF

Join us at, ctf.bsidessf.net

a toothless from how to train your dragon is smiling and looking at the camera ALT: a toothless from how to train your dragon is smiling and looking at the camera

10 minutes to go, look at how excited we are! #BSidesSF #CTF

Join us at ctf.bsidessf.net/register.

Less than 1 hour to go before launch!!

You can check our challenges soon at ctf.bsidessf.net and join us on Discord at discord.gg/QxFf8crUPw

T-minus 6 hours and counting—brace for lift-off!

#BSidesSF #CTF launches at 4pm PDT today, head-on over to ctf.bsidessf.net to register and join us on Discord at discord.gg/QxFf8crUPw.

You are in for a punny time until launch!

Join us at ctf.bsidessf.net/register, the #BSidesSF #CTF kicks off at 4:00pm PDT tomorrow!

I spy with my little eye, a dragon! Report all dragon sightings right away! #CTF #BSidesSF

Around 28 hours to go before we launch! Register at ctf.bsidessf.net/register and join us on Discord at discord.gg/QxFf8crUPw.

Round and round we go, but which came first, nobody knows. #BSidesSF #CTF

We've developed a state-of-the-art block cipher. It mixes 1x1 with 2x1 blocks. That's how those work, right? #BSidesSF #CTF (ctf.bsidessf.net)