Category Archives: defcon 25

All the Hardware Badges of DEF CON 25

Hardware is the future. There is no better proof of this than the hardware clans that have grown up around DEF CON, which in recent years has become known as Badgelife. I was first drawn to the custom hardware badges of the Whiskey Pirates at DC22 back in 2014. Hardware badges were being made by several groups at that time but that was mainly happening in isolation while this year the badge makers are in constant contact with each other.

A slack channel just for those working on their own DEF CON badges sprung up. This served as tech support, …read more

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Posted in badge, badge builders meetup, badgelife, DEF CON, defcon 25, hardware badge, news | Leave a comment

“Borrow” Payment Cards with NFC Proxy Hardware

Contactless payments are growing in popularity. Often the term will bring to mind the ability to pay by holding your phone over a reader, but the system can also use NFC tags embedded in credit cards, ID card, passports, and the like. NFC is a reasonably secure method of validating payments as it employs encryption and the functional distance between client and reader is in the tens of centimeters, and often much less. [Haoqi Shan] and the Unicorn team have reduced the security of the distance component by using a hardware proxy to relay NFC interactions over longer distances.

The …read more

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Posted in Apple Pay, China UnionPay, cons, contactless, contactless payment, DEF CON, defcon 25, NFC, nRF24L01+, PN7462AU, proxy, Quickpass, Unicorn Team, wireless hacks | Leave a comment

Michael Ossmann Pulls DSSS Out of Nowhere

[Michael Ossmann] spoke on Friday to a packed house in the wireless hacking village at DEF CON 25. There’s still a day and a half of talks remaining but it will be hard for anything to unseat his Reverse Engineering Direct Sequence Spread Spectrum (DSSS) talk as my favorite of the con.

DSSS is a technique used to transmit reliable data where low signal strength and high noise are likely. It’s used in GPS communications where the signal received from a satellite is often far too small for you to detect visually on a waterfall display. Yet we know that …read more

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Posted in cons, DEF CON, defcon 25, Direct Sequence Spread Spectrum, DSSS, gnu radio, gps, michael ossmann, reverse engineering, Wireless Hacking Village, wireless hacks, zigbee | Leave a comment

Injecting Code Into Mouse Firmware Should Be Your Next Hack

Here’s a DEF CON talk that uses tools you likely have and it should be your next hacking adventure. In their Saturday morning talk [Mark Williams] and [Rob Stanely] walked through the process of adding their own custom code to a gaming mouse. The process is a crash course in altering a stock firmware binary while still retaining the original functionality.

The jumping off point for their work is the esports industry. The scope of esporting events has blown up in recent years. The International 2016 tournament drew 17,000 attendees with 5 million watching online. The prize pool of $20 …read more

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Posted in binary, cons, DEF CON, defcon 25, firmware, firmware dump, gaming mouse, injection, Microcontrollers, mouse, peripherals hacks, STM32F4, STM32F4 Discovery | Leave a comment

DEF CON Badgelife: Someone Finally Did It

Badgelife is the celebration of electronic conference badges, a way of life that involves spending far too much time handling the logistics of electronics manufacturing, and an awesome hashtag on Twitter. Badgelife isn’t a new thing; it’s been around for a few years, but every summer we see a massive uptick in the lead up to Def Con.

For the last few years, the designers and engineers deep into Badgelife have had the same conversation dozens of times. One person says, “you know, someone should build a badge that’s a quadcopter.” Another person replies, “Can you imagine how annoying that …read more

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Posted in badge, badgelife, cons, DEF CON, defcon 25, quadcopter | Leave a comment

Badge from Diamond Age Comes to DEF CON

We’re huge fans of [Neil Stephenson’s] work and are usually looking to assign some of his vision to the gear that pops up in the real world. But there’s no stretching or squinting necessary with this one. [Kerry Scharfglass] has built a functioning Drummer’s Badge from the foundational Sci-Fi novel The Diamond Age.

The badge is called Sympetrum, which is a genus of dragonfly. In explaining what the badge is and does, [Kerry] instructs you to go and read the book first and we couldn’t agree more. This isn’t recommended reading; if you’re a geek you need to read …read more

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Posted in apa102, badgelife, cons, DEF CON, defcon 25, dragonfly, hardware badge, Neil Stephenson, stm32, stm32f0, the diamond age | Leave a comment

DEF CON BadgeLife: Blinky Bling

This is the biggest year yet for unofficial electronic conference badges. We’re calling it the year of Badgelife, and for the next few weeks, we’re going to be taking a look at the unofficial conference badges being deployed at this year’s DEF CON.

[Mr Blinky Bling] a.k.a. [Benn Hibben] has created his own badge for this year’s con. On board is a bunch of LEDs, WiFi, and capacitive buttons. It’s a WiFi badge for all your AP scanning and deauth needs. The electronics for this badge are a bit more complicated than simply throwing an ESP8266 on a board and …read more

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Posted in badge, badgelife, cons, DEF CON, defcon 25, electronic conference badge | Leave a comment