Hands-On: The Pandemic DEF CON Badge Is An Audio Cassette

July 24, 2020 by Mike Szczys 29 Comments

My DEF CON Safe Mode badge just arrived in the mail this afternoon. The Vegas-based conference which normally hosts around 30,000 attendees every year has moved online in response to the global pandemic, and the virtual event spins up August 6-9. Known for creative badges, North America’s most well-known infosec con has a tick-tock cycle that alternates electronic and non-electronic badges from year to year. During this off-year, the badge is an obscure deprecated media: the audio cassette.

This choice harkens back to the DEF CON 23 badge which was an vinyl record — I have the same problem I did back in 2015… I lack access to playback this archaic medium. Luckily [Grifter] pointed everyone to a dump of the audio contents over at Internet Archive, although knowing how competitive the badge hacking for DEF CON is, I’m skeptical about the reliability of these files. Your best bet is to pull the dust cover off your ’88 Camry and let your own cassette roll in the tape deck. I also wonder if there are different versions of the tape.

But enough speculation, let’s look at what physically comes with the DEF CON 28 badge.

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Hackaday Podcast 077: Secret Life Of SD Cards, Mining Minecraft’s Secret Seed, BadPower Is Bad, And Sailing A Sea Of Neon

July 24, 2020 by Mike Szczys 3 Comments

Hackaday editors Mike Szczys and Elliot Williams are deep in the hacks this week. What if making your own display matrix meant a microcontroller board for every pixel? That’s the gist of this incredible neon display. There’s a lot of dark art poured into the slivers of microSD cards and this week saw multiple hacks digging into the hidden test pads of these devices. You’ve heard of Folding@Home, but what about Minecraft@Home, the effort to find world seeds from screenshots. And when USB chargers have exposed and rewritable firmware, what could possibly go wrong?

Take a look at the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

Direct download (60 MB or so.)

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Stay At Home, HOPE And DEF CON Will Come To You

July 21, 2020 by Mike Szczys 4 Comments

We’ve often heard conferences like HOPE and DEF CON called Hacker Summer Camp (although there are certainly more camp-like camps that also fit the bill). As we get into the hot parts of the summer, heading indoors for security talks, workshops, and untold shenanigans sounds like a good idea… if it weren’t for an ongoing pandemic. The good news is that you can still get a strong dose of these cons over the next three weekends as they’re being offered virtually.

Hackers on Planet Earth (HOPE) is a biennial conference hosted in NYC. After much drama about the dank Hotel Pennsylvania hiking prices astronomically for the con, a new venue was found and we all breathed a sigh of relief. The best laid plans, etc. etc. — you know how this turns out. But beginning this Saturday, July 25th, over 100 speakers will present in HOPE’s first-ever live online presentation. Hackaday is a proud sponsor of HOPE 2020.

DEF CON happens every year, and every year we tell you that DEF CON has been cancelled. What do you do if it has actually been cancelled when the boy constantly cries wolf? Well it’s not cancelled, it’s morphed into what is called DEF CON Safe Mode — an online offering for all to enjoy. Go head, hook your computer up to the online version of DEF CON, what could go wrong? Find out when the virtual con goes live starting August 6th.

These are not the same as meeting up IRL. There are so many chance interactions and spectacles to see that you simply cannot spark with a virtual offering. However, the platform for presenters, the coming together to talk, learn, and share about privacy, security, and internet freedom are meaningful and worth our time. So support your favorite cons by joining in, even when it’s from the comfort of your own couch.

Hackaday Podcast 076: Grinding Compression Screws, Scratching PCBs, And Melting Foam

July 17, 2020 by Mike Szczys 3 Comments

Hackaday editors Elliot Williams and Mike Szczys are enamored by this week’s fabrication hacks. There’s a PCB mill that isolates traces by scratching rather than cutting. You won’t believe how awesome this angle-cutter jig is at creating tapered augers for injection molding/extruding plastic. And you may not need an interactive way to cut foam, but the art from the cut pieces is more than a mere shadow of excellence. Plus we gab about a clever rotary encoder circuit, which IDE is the least frustrating, and the go-to tools for hard drive recovery.

Take a look at the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

Direct download (60 MB or so.)

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Ljusmaskinen Takes The Rave To The Streets (Eventually)

July 16, 2020 by Mike Szczys 6 Comments

When humanity comes out the other side of this pandemic there will be a mountain of awesome projects to show off in person. For instance, this backpack mounted DMX lighting was built to be worn as a mobile rave rig by Swedish hacker [Tim Gremalm]. In-person raves aren’t happening right now but that just means there’s time to add waaaaay to many features to this thing until lockdowns become a thing of the past.

The frame holding the lighting integrates into this backpack and we assume that’s where the battery is stored. The Y-shaped masts hold four PAR lights. Incidentally, that mean parabolic aluminized reflectors, which are commonly used for stage lighting, but in this case the halogen bulbs have been torn out for a trio of 4 W RGBW LEDs. The yellow rectangles are 10 W Chip-on-Board LED panels that serve as strobe lights.

Festmaskinen audio rig in 2015

But merely having the lights does not make it a Rave — this party needs both music and a way to synchronize the lighting effects with it. The music part was already built and used at the West Pride Gothenburg festival (the second largest in Sweden after Stockholm) five years ago. That project, called Festmaskinen, works in conjunction with Ljusmaskinen (the Light Machine). So two people carry the rave on their backs, one with music, the other with the lighting, now that’s a party!

The light controller board uses a set of four Arduino Nano boards along with four voltage regulators to provide control to each of the PAR lights. All of it is stitched together by control from a DMX input board which also controls the COBs. (In this image the DMX board is hidden below the light control board.) Of course you need something that can process the audio and turn it into DMX512 to bring those lighting animations to life and for that he reached for a Raspberry Pi.

[Tim] has a quick demo of the rig at work which we’ve embedded below. What we’re missing is seeing how the top-heavy structure handles when worn as a backpack. Hopefully he’ll be able to get out of his low-ceilinged home and let the stage lights fly before too long!

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A small black box hosting a #qlcplus session running on a #raspberrypi for #Ljusmaskinen

A post shared by Tim Gremalm (@timgremalm) on Jul 1, 2020 at 1:15pm PDT

Today’s Twitter Hack Is New Take On “Nigerian Prince” Scam

July 15, 2020 by Mike Szczys 52 Comments

Don’t send bitcoin to celebrities… or to random people for that matter. This afternoon a number of high profile Twitter accounts were taken over, including Joe Biden, Bill Gates, Elon Musk, Apple, Jeff Bezos, and Kanye West, and the event appears to be ongoing. Each displayed a message saying they wanted to “give back” by doubling the bitcoin that they are sent. The messages all appear to have the same bitcoin wallet address.

This is reminiscent of the “Nigerian prince” scams, a form of advance-fee scam where an email asks for help with a small sum of money in order to obtain a larger sum. Those usually come in as spam emails which most people are wise to at this point. However, blindly following celebrities on Twitter may still deliver a good dose of naïveté when those platforms are misused.

Bitcoin transactions can be viewed publicly and this wallet is showing 11.8 BTC in and 5.8 BTC out in a total of 288 transactions. The net is roughly 6 bitcoin or $55k USD at the time of writing. Twitter’s response appears to have locked down all verified accounts from publishing new tweets. They retain the ability to retweet and delete existing tweets.

Main image screenshot sources:

Roboticist Grant Imahara Of Mythbusters Fame Dies Of Aneurysm At Age 49

July 14, 2020 by Mike Szczys 45 Comments

We awake this morning to sad news of the premature passing of Grant Imahara at the age of 49 due to a brain aneurysm. Grant was best known for his role on the wildly popular Mythbusters television show on which he starred and built test apparatus for seasons three through twelve. He landed this role because he was a badass hardware hacker as much as he was an on-camera personality.

Grant received his degree in electrical engineering from USC in 1993 and landed a job with Lucasfilm, finding his way onto the Industrial Light and Magic team to work on blockbuster films like the Star Wars prequels (R2-D2 among other practical effects) and sequels to Terminator and The Matrix. Joining the Mythbusters team in 2005 was something of a move to rapid prototyping. Each of the 22-minute episodes operated on a 10-day build and a film cycle in which Grant was often tasked with designing and fabricating test rigs for repeatable testing with tightly controlled parameters.

After leaving the show, Grant pursued several acting opportunities, including the Kickstarter funded web series Star Trek Continues which we reported on back in 2013. But he did return to the myth busting genre with one season of The White Rabbit Project on Netflix. One of the most genuinely geeky appearances Grant made was on an early season of Battlebots where his robot ‘Deadblow’ sported a wicked spiked hammer. Video of his appearance in the quarter-finals is like a time-capsule in hacker history and guaranteed to bring a smile to your face.

Grant Imahara’s legacy is his advocacy of science and engineering. He was a role model who week after week proved that questioning how things work, and testing a hypothesis to find answers is both possible and awesome. At times he did so by celebrating destructive force in the machines and apparatus he built. But it was always done with observance of safety precautions and with a purpose in mind (well, perhaps with the exception of the Battlebots). His message was that robots and engineering are cool, that being a geek means you know what the heck you’re doing, and that we can entertain ourselves through creating. His message lives on through countless kids who have grown up to join engineering teams throughout the world.

Grant was the headliner at the first Hackaday Superconference in San Francisco back in 2015. I’ve embedded the fireside chat below where you can hear in his own words what inspired Grant, along with numerous stories from throughout his life.

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