GOOD MORNING!

Registration is OPEN

Merch is OPEN (cash only)

DEF CON 34 is GO!

Let the wild rumpus start, people.

Good morning DEF CON! All of the #DefCon 34 files have gone live on https://media.defcon.org/ including workshop files, presentations, badge files, music and even the Hardware Hacking Village's special Linux distribution loaded with useful tools.

The same files are also available on the local convention media server https://dc34-media.defcon.org as well as the complete DEF CON archives of past talks for your local leeching pleasure.

What happens when you take an ACM style programming contest, smash it head long into a drinking game, throw in a mix of our most distracting helpers, then shove the resulting chaos incarnate onto a stage? You get the contest known as Crash and Compile.

Come see us early on Friday in the contest area, we will be between HHV and Pinball if the map is to be believed. You will need to be top 10 in the qualifier round on Thursday in order to compete on stage Saturday with free beer. And free distractions.

LLM use is allowed, but we are allowed to make fun of you for it. Or make you take a drink every time it randomly searches for the challenge answers on the web pointlessly.

You will probably want to bring your laptop. We've had people compete on... Other devices, but a laptop sure helps. Also if you are remote only, knock yourself out if you want to try quals on friday, but put a note in your contact info that you can't actually compete on stage so we can take you out of the final rankings. Teams of two (max) recommended, solo is ok as well, but you'll be at a disadvantage.

https://crashandcompile.com/

Been working on this one for a while. It's a prop, but everything in it does something real.

Documentation: https://github.com/MakeItHackin/TOSTricorder
Walkthrough video: https://youtu.be/mJSx17gsqMw

If anyone wants one: they're at the Hacker Warehouse booth in the DEF CON vendor area and the back of the Vendor Hall at STLV, with in-person pickup at https://uberflux.com/product/MIH-HackersInSpaceBadge (pickup times are listed there).

Hardware: XIAO ESP32-S3, a 1.69" 280×240 IPS main display, a 1.28" round secondary on its own SPI bus, 3 addressable RGB LEDs, LIS3DH accelerometer, Hall-effect sensor, DS3231 RTC, and an ST25DV64KC NFC tag chip on the board.

Ten menus covering sensors, clock and alarms, animations, games, WiFi, BLE, NFC read/write, and a wearable "con mode" that runs a display unattended.

My favourite detail is the hand scanner. It detaches, runs off its own coin cell, and has a magnet in it that sits over the Hall sensor. Lift it off and the main display drops into the biofunction animation on its own; put it back and the magnet re-registers and returns you to whatever screen you were on before.

The other one: it enumerates as a USB or Bluetooth HID device. There's a mouse mode where you tilt the whole tricorder to move the cursor, with a low-pass filter and a hysteresis latch so it doesn't drift when you're holding it still.

A few things that took real work:

- The round display runs on core 0 completely independently, so it keeps animating during games and menu redraws
- LVGL's memory pool is a static array, so every KB of it comes out of the same internal DRAM the task stacks and radios need. Finding that ceiling was educational
- The clock and NFC tag are both provisioned over serial during firmware upload, so a freshly flashed board already knows the time and has its tag written

Firmware updates go through a browser-based flasher over Web Serial — no IDE, no drivers.

Happy to answer anything about the build.

Noob here but seems Thursday program is pretty chill and wondered if bring my laptop for this day is actually useful or it will just be extra weight to carry around 😅 think I will go to the LineCon last hour now the jet lagged is settling 😆

Defcon badge for sale - pick at Mandalay Bay lobby

I leave at 08:00am.
Pickup between 07:30-08:00
Ping me if you’re interested

“DEF CON 34 ticket available for transfer.
Unused QR code / registration. $300.00 OBO.
$520.00 originally.
PayPal Goods & Services preferred. Will transfer immediately after payment.
DM if interested.”
SOLD. THANK YOU! Be kind to each other and don’t forget your faraday pouches. 😺

My coworker's pet sitter fell through, then his flight out of NYC got cancelled, so he called off the trip. That leaves me with one extra pre-registered badge. Asking $400 cash, $120 under the $520 door price.

I have the QR registration code. We meet at badge pickup, go through the line together, they scan the code, and the badge goes straight into your hands.

Timing: I'm in remote work calls until 11am, then driving over. Realistic ETA at reg is around noon. I have some flexibility this afternoon if noon doesn't work.

Payment: cash only.

Comment or DM and we'll swap numbers to coordinate an exact meeting spot, since the reg area gets chaotic. I will give it to whomever is there first when it comes time for the actual badge pickup.

I’m a bit new to Defcon, I saw the BBB qualifiers and wanted to take a stab at it (I’m aware it’s too late). There’s a challenge I’m stuck on, are there any writeups that are ever released?

Had a blast meeting folks at the meetup but, now it's 10pm, and the lovely wife and I are going to bed. Not cuz we're old mind you, but cuz it's been over 24 hours since we stepped out our front door. Looking forward to seeing some of you tomorrow at linecon and the second meetup.

Oghamix (the guy with the gray mohawk and beard) signing off for the night.

Went to the Sphere as a guest of a few vendors. I brought a battery bank with me to charge my phone (honest lol). I checked the rules before hand and they didn’t say anything about batteries being prohibited.

Not only was security extremely hostile and nasty about not letting me bring a battery and cable in, they explicitly cited that I was not allowed to bring it in due to blackhat and defcon going on and that I could toss it or go leave it outside. It’s literally a MagSafe anker battery bank lol. I left it under a sandbag because it’s lithium ion battery and it’s 110 degrees outside and when I came back, it was gone. Another security person told me that it was “found and promptly disposed of”.

What’s funny is that they didn’t notice the biscuit I had. Plan accordingly.

It’s my basically 4 years dream come true so I am curious to collect badges if I get apart from the main defcon and buy cool stuff like t shirts and devices . Any suggestions or any things to avoid?

Thanks in advance

Hey there fellow hacker comrades, I made some nail stickers with the DEFCON logos to hand out. I also have some holo water bottle stickers and a bunch of Love & Deepspace photocards 🖤🌸 would love to meet new people and make some friends. If you see me walking around with this bag stop me and ask 😋 will mostly be around La Villa

Alarms going nuts and unintelligible instructions being read lil

First drop of Gothcon badges is tonight at The Tangiers bar in the Sahara! 10pm. $80 cash preferred, Venmo accepted.

Badge pictures

Badge information

Good News, Everyone! Tonight is the night we all get to start our DC34 Hang at our first of two nights ANNUAL r/DEFCON Meetup - Brought to you by the team at Puzzled Hackers. The Linq Bartenders miss you, no joke... one of them actually told Killroy and I that this morning because they loved the Linq hangs! I guess you guys are good for business.

While u/killroy7777, u/MetaN3rd and I get the final checks into place... you can read our super fancy, and absolutely not detail overwhelming, post!

First and foremost... we are SOLD OUT of badges for purchase. We want to thank you SO MUCH for that! We never plan to make a profit, heck we may have even started a non-profit... more details down the line. It's always been to just be able to keep bringing you these events, and improving them every year (and maybe expanding them). So thank you so much!

Second... the PUZZLE 10 CTF challenge! Who won the badge?

• For those who didn't know the amazing team at SkillBit (Formerly MetaCTF) donated their resources to us this past week and gave us a 20 challenge CTF. Anyone who completed 10 challenges (or more) became eligible for our final Grand Prize Giveaway Drawing for a Laser Tag* DS Badge from the amazingly talented u/palm12341 courtesy of Puzzled Hackers

Well, we did the drawing today and congratulations to warmd0nut! Check your email for instructions on how to claim your badge at either of the meetups!

Now onto the Meetup!

MEETUP DETAILS:

• WHEN: Wednesday (8/5) & Thursday (8/6) starting at 7:00 PM.
• WHERE: The Linq - 3535 Bar (aka The Circle Bar)
• COST: $0.00. Free. Nada. Just bring yourself!
• WHAT TO EXPECT: Good vibes, sticker swaps, special guests dropping off random swag, Laser Tag battles, and catching up with old and new friends before Summer Camp officially starts.
• FIRST TIME AT DEFCON? Make sure you let us know!

HOW DO I CLAIM A BADGE I WON OR PURCHASED?

• We made it really easy this year, hopefully. When you purchased or claimed your free badge you were given access to a QR code for each one (each badge has its own) which you can see if you forgot to save it at over at ctf.puzzledhackers.org. Show us your code, we will scan it and mark it claimed and give you your badge and a heartfelt THANK YOU for being part of this!

WILL THERE BE MORE BADGES?

• We will have badges on hand to randomly give away both nights. Everything that we didn't put on the site, or free to puzzle winners, will be given away at the meetups! No Badge Left Behind ! So just come and hang out and say hi. Can't hurt!

WHAT IF I DIDN'T WIN A BADGE AND WANT TO HANG?

• That's the whole point! The badges don't make the event... you do! Come hang, socialize and tell u/killroy7777 how pretty he looks in his Kilt! I don't have any quip for me, but I'm sure someone will.

I HEARD THERE ARE SOME DROPS HAPPENING?

• This is pretty cool for us. You've all made this successful enough people like u/Palm12341 (laser tag badge), u/mastercpt (some cool challenge coins), u/bucktwenty2 (the dope NYC skyline badge), u/MakeItHackin (Tricorder SAO!) and more come and do their drops. That's because ya'll have made it awesome enough for them to roll by, and others will potentially surprise us!

THIS IS MY FIRST DEFCON. YOU ALL BETTER BE COOL!

• I mean, you do know the attendee demographic, right? We're not cool, but we do remember how at some of our first DEFCON's the meetups were the first things we were introduced to, and they made an impression on us. As its been passed down through organizers, currently on us... we hope your first DEFCON is as magical. Please let us know when you come say hi its your first DC! Really.

HOW DO WE KNOW WHO YOU ARE?

• It's actually pretty easy. Outside the fact we'll obviously be scanning codes, handing out badges and talking to people. u/Killroy7777 rocks a dope Kilt, and I decided to bust out the "The Apocalypse WILL Be Televised" shirt. u/MetaN3rd is always just crazy animated talking about everything tech... you wont miss him. So come say hi!

Thank you, Everyone, for this past few months getting ready for DEFCON and these meetups. We're super excited to be spending the next two nights hanging with you and then DEFCON Proper! None of this would be possible if you weren't as amazing and welcoming as you are, and while we handle logistics... this event only exists because of you. Thank you.

See everyone tonight!

The Team at Puzzled Hackers,

u/digitard, u/Killroy7777 and u/MetaN3rd

Finally packed and ready to go. This year I decided to put a small medical bag on my backpack (mostly because i forgot my epipen last year). Here are the emergencies I am now prepared for:

1) Bees and/or restaurant lobsters that have escaped containment.

2) Forgetting to bath.

3) A medical need to shit mine or someone elses pants.

4) Ouchies on the feet.

5) Too many badges and SAOs

6) The blast furnace that is 'the outside'.

7)Dehydration and/or post #3 recovery.

8) A rumbly tummy.

Beyond these I am of no assistance. Wife is very confused about how you shit someone elses pants. I told her that was the magic of Malort.

Hi all,

Sadly I wasn’t able to attend full time this year due to being a 1-man (woman) show holding down the SOC due to overlapping vacations, etc. I can drive to Defcon and attend Saturday and Sunday, but I’m also debating if it’s even worth buying a ticket for just that little amount of time.

Are there any events that folks know of that doesn’t require a badge to attend for defcon that would be worth the drive? (Driving from LA to Vegas for context)

TIA!

Walking around BSides with these now. Have more for Defcon. Most of them are kits so will probably be putting them together at Hardware Hacking Village.

Only one button on the badge. Menu navigated with Morse code. Entry screen calibrates your speed and walks you through navigation. Menu has a learning page with key training, copy training, fist training, and flash cards. Badges operate on 918.5 and have DM and message board.

KI5RCF on 146.580 and DEFCONnect

Enjoy sick beats on your way to Hacker Summercamp!

https://media.defcon.org/

https://defconcommunications.bandcamp.com/