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     -~-~-~-~-~-~ hardware hacker and design deliriant ~-~-~-~-~-~-
╔══════════════════[ Projects ][ About ][ Contact ]═══════════════════╗
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╟┐                                                                   ┌╢▐
╠╪═════════════: DEF CON Hardware Hacking Village CTF :══════════════╪╣▐
╟┘                                                                   └╢▐
Every summer, 10s of thousands of hackers from around the       ║▐
║     world converge on Las Vegas, NV to teach, learn, and show       ║▐
║     off their skills at an information security conference          ║▐
║     known as DEF CON. After years of attending, I got involved,     ║▐
║     volunteering with the Hardware Hacking Village (HHV), a         ║▐
║     section of the conference dedicated to hardware hacking. I      ║▐
║     took over the Hardware Hacking Village (HHV) Capture the        ║▐
║     Flag (CTF) event in 2018 at DEF CON 26. Before then,            ║▐
║     another member of the HHV community would make a challenge      ║▐
║     or two, focusing on hardware hacking topics, to challenge       ║▐
║     DEF CON attendees that stopped by the HHV.                      ║▐
║                                                                     ║▐
║     I wanted the content to continue in the same vein as            ║▐
║     before, so for DEF CON 26 I created a simple PCBA with an       ║▐
║     ATTiny84 MCU, EEPROM, four buttons, and some passives           ║▐
║     (LEDs, resistors, and capacitors). The PBCA functionality       ║▐
║     was nothing fancy; there were two green LEDs, one that          ║▐
║     would turn on if a correct passcode with the buttons, and       ║▐
║     the other would turn on if a specific value was read from       ║▐
║     the EEPROM. The participants' goal was to get both LEDs to      ║▐
║     light up by passing the passcode and EEPROM checks. My          ║▐
║     intention was to get DEF CON attendees more familiar and        ║▐
║     comfortable with side-channel attacks and serial                ║▐
║     interfaces.                                                     ║▐
║                                                                     ║▐
║     
║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ More details on the DEF CON HHV Challenge board and ║▐ ║ solutions write-up can be found on the HHV github ║▐ ║ ║▐ ║ DEF CON 27 was a busy year for me, so there wasn't a HHV ║▐ ║ CTF, but I picked up running the event at DEF CON 28. This ║▐ ║ was an interesting year because it was the first year DEF ║▐ ║ CON was fully remote, due to COVID. I needed to get ║▐ ║ creative and find a way to make the content available ║▐ ║ remotely. ║▐ ║ ║▐ ║ I created a series of logic analyzer captures for ║▐ ║ participants to download and solve. All captures were taken ║▐ ║ using Saleae's Logic software coupled with my Logic 8 and ║▐ ║ Logic 16 analyzers. Some of the challenges also included ║▐ ║ additional files, like Gerber files for the board the ║▐ ║ capture was taken from. The challenges were designed to be ║▐ ║ easier at first, to introduce participants to the software, ║▐ ║ and then they slowly ramped up in difficulty. ║▐ ║ ║▐ ║
║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ I was very pleased with the number of participants, and the ║▐ ║ number of competitors that solved all the challenges! I ║▐ ║ think the remote accessibility helped make the content more ║▐ ║ approachable. I suspect the need of tools for many hardware ║▐ ║ hacking challenges can be daunting for people. This is ║▐ ║ something to keep in mind for future HHV CTF events. ║▐ ║ ║▐ ║ All the challenges from DEF CON 28 HHV CTF are hosted on ║▐ ║ the HHV website here. There is a write up for how to solve ║▐ ║ the challenges here. ║▐ ║ ║▐ ║ During DEF CON 29, the HHV CTF was fully remote due to the ║▐ ║ conference being a hybrid of in-person and remote. This ║▐ ║ year, I was fortunate to have support from a few other ║▐ ║ members of the community who were interested in creating ║▐ ║ CTF content. ║▐ ║ ║▐ ║ Learning from the previous year, I upgraded our platform to ║▐ ║ utilize CTFd for challenge posting and flag submissions. ║▐ ║ The previous year, I just had participants submit flags by ║▐ ║ direct messaging me, and I verified if they were correct. ║▐ ║ That wasn't a scalable model, so I took time this year to ║▐ ║ set up an instance of CTFd for the HHV CTF. As a result, I ║▐ ║ wasn't able to generate as much challenge content, but I ║▐ ║ did create a few Logic captures to accompany the challenges ║▐ ║ created by my teammates. ║▐ ║ ║▐ ║
║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ All the challenges from the DEF CON 29 HHV CTF are hosted ║▐ ║ on the HHV website here. There is also a great write up ║▐ ║ from the CTF winner for how they solved the challenges here. ║▐
╟┐                                                                   ┌╢▐
╠╪═══════════════════════════: Projects :════════════════════════════╪╣▐
╟┘                                                                   └╢▐
║     DEF CON 31 Hardware Hacking Village CTF .............. 2023     ║▐
║     THOTCON 0xC Electronic Conference Badge .............. 2023     ║▐
║     DEF CON 30 Hardware Hacking Village CTF .............. 2022     ║▐
║     ParFive: a Daily Golf-Themed Word Game ............... 2022     ║▐
║     THOTCON 0xB Electronic Conference Badge .............. 2022     ║▐
║     DEF CON Hardware Hacking Village CTF ................. 2021     ║▐
║     SAOwner: Electronic Badge i2c Interposer ............. 2019     ║▐
║     Pintwood Derby: Team Cheetah Strikes Again ........... 2019     ║▐
║     Commuter - Game and Controller ....................... 2018     ║▐
║     crAPU: crappy Audio Processing Unit SAO for DC26 ..... 2018     ║▐
║     Pintwood Derby: the Cheetah Car ...................... 2018     ║▐
║     RAND: IDEO Chicago Installation ...................... 2017     ║▐
║     Ox Vox: DEF CON 25 and BSidesPDX Badge Hack .......... 2017     ║▐
║     Upgrading the Oxygen Concentrator Inferface .......... 2017     ║▐
║     Giving Furby a New Voice Box ......................... 2017     ║▐
║     Cigar Mic: DEF CON 24 Badge Hack ..................... 2016     ║▐
║     Personal Logo Design ................................. 2014     ║▐
║     9-Degrees of Freedom Wireless IMU .................... 2014     ║▐
║     BitSynth: Controlled Quantization Synth .............. 2013     ║▐
║     Psychomasker: Audio Compression Visualization App .... 2013     ║▐
║     Bike Design Using Webcode ............................ 2013     ║▐
║     Canal Construction Logo Design ....................... 2013     ║▐
║     Record Player Design Using Webcode ................... 2013     ║▐
║     Subzero: Refrigerator Subwoofer ...................... 2013     ║▐
║     Shark Attack Game for iPad ........................... 2013     ║▐
║     Gardner Nested All-Pass Filter Reverb Plugin ......... 2013     ║▐
║     Slam Mixer Audio Mixer App for iPad .................. 2013     ║▐
║     Roland Space Echo Audio Plugin ....................... 2013     ║▐
║     MIDIogame Controller: Creating Music From Gameplay ... 2012     ║▐
║     Car Charger Technical Illustration ................... 2012     ║▐
║     eVORG Logo Designs ................................... 2012     ║▐
║     Newark Bike Project Designs .......................... 2012     ║▐
║     DEFCON 19 Bot Badge .................................. 2010     ║▐
║     WiiAssist: 3D Head Tracking with Wiimotes ............ 2009     ║▐
║     Off-the-Shelf Open Source Security System ............ 2009     ║▐
╟┐                                                                   ┌╢▐
╠╪═════════════════════════════: About :═════════════════════════════╪╣▐
╟┘                                                                   └╢▐
Part hardware hacker, part creative technologist, and part      ║▐
║     human-centered designer thriving at the cross-section of        ║▐
║     engineering and design.                                         ║▐
║                                                                     ║▐
║     Led to engineering through my love for music, art, and          ║▐
║     math, I hold degrees in electrical, computer, and music         ║▐
║     engineering. Following a stint in academia, I joined IDEO       ║▐
║     as a senior electrical engineer where I contributed             ║▐
║     creative problem solving and prototyping fluency to a           ║▐
║     breadth of projects ranging from vehicles of the future, to     ║▐
║     life-changing medical equipment, to innovative children's       ║▐
║     toys. Most recently, I was at Delve and now Sundberg-Ferar,     ║▐
║     diving deeper into engineering for production, and working      ║▐
║     on bringing ideas and prototypes to reality.                    ║▐
║                                                                     ║▐
║     Outside of work, I enjoy creating rotoscopes and                ║▐
║     illustrations, reverse engineering electronic toys, and         ║▐
║     taking a break from screens by running, biking, and camping     ║▐
║     in the great outdoors.                                          ║▐
╟┐                                                                   ┌╢▐
╠╪═══════════════════════════: Education :═══════════════════════════╪╣▐
╟┘                                                                   └╢▐
║   -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ MS in Music Engineering ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡=-   ║▐
║     School .... University of Miami, Miami, FL                      ║▐
║     Grad year . 2014                                                ║▐
║                                                                     ║▐
║   -=≡≡≡≡≡≡≡≡ MS in Electrical and Computer Engineering ≡≡≡≡≡≡≡≡=-   ║▐
║     School .... University of Delaware, Newark, DE                  ║▐
║     Grad year . 2012                                                ║▐
║                                                                     ║▐
║   -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡ BEE in Electrical Engineering ≡≡≡≡≡≡≡≡≡≡≡≡≡≡=-   ║▐
║     School .... University of Delaware, Newark, DE                  ║▐
║     Grad year . 2011                                                ║▐
╟┐                                                                   ┌╢▐
╠╪══════════════════════════: Experience :═══════════════════════════╪╣▐
╟┘                                                                   └╢▐
║   -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ Senior Electrical Engineer ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡=-   ║▐
║     Company ... Sundberg-Ferar, Detroit, MI                         ║▐
║     Key roles . Launched and led Electrical Engineering offering    ║▐
║               . Developed embedded hardware and software products   ║▐
║               . Managed projects and client relationships           ║▐
║               . Designed from prototype through manufacturing       ║▐
║     Years ..... May '22 - Present                                   ║▐
║                                                                     ║▐
║   -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡ Senior II Electrical Engineer ≡≡≡≡≡≡≡≡≡≡≡≡≡≡=-   ║▐
║     Company ... Bresslergroup / Delve, Philadelphia, PA             ║▐
║     Key roles . Developed embedded hardware for diagnostic devices  ║▐
║               . Developed embedded firmware with precision-timing   ║▐
║               . Designed for manufacturing                          ║▐
║     Years ..... Nov '20 - Apr '22                                   ║▐
║                                                                     ║▐
║   -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ Senior Electrical Engineer ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡=-   ║▐
║     Company ... IDEO, Chicago, IL                                   ║▐
║     Key roles . Specialized in rapid hardware prototyping           ║▐
║               . Developed embedded and front-end software           ║▐
║               . Designed human-centered solutions for clients       ║▐
║     Years ..... Sep '14 - Oct '20                                   ║▐
║                                                                     ║▐
║   -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ User Experience Intern ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡=-   ║▐
║     Company ... Shure, Niles, IL                                    ║▐
║     Years ..... Summer '13 & Summer '14                             ║▐
║                                                                     ║▐
║   -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ Graduate Research Assistant ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡=-   ║▐
║     Company ... Univ. of Miami, Music Eng Dept, Miami, FL           ║▐
║     Years ..... Aug '12 - May '14                                   ║▐
║                                                                     ║▐
║   -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ Co-Founder and Shop Manager ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡=-   ║▐
║     Company ... Newark Bike Project, Newark, DE                     ║▐
║     Years ..... Oct '11 - Aug '12                                   ║▐
║                                                                     ║▐
║   -=≡≡≡≡≡≡≡≡≡≡≡≡ Undergrad/Grad Research Assistant ≡≡≡≡≡≡≡≡≡≡≡≡=-   ║▐
║     Company ... Univ. of Delaware, Elec/Comp Eng Dept, Newark, DE   ║▐
║     Years ..... Feb '09 & Aug '12                                   ║▐
╟┐                                                                   ┌╢▐
╠╪════════════════════════════: Skills :═════════════════════════════╪╣▐
╟┘                                                                   └╢▐
║                   -=≡≡≡≡≡≡≡ Engineering ≡≡≡≡≡≡≡=-                   ║▐
║     Hardware Hacking     3D CAD Modeling  Embedded Dev & Design     ║▐
║     Reverse Engineering    Prototyping    Human-Centered Design     ║▐
║     Digital Synth Design   PCB Design    Human-Comp Interaction     ║▐
║                                                                     ║▐
║                   -=≡≡≡≡≡≡≡≡ Languages ≡≡≡≡≡≡≡≡=-                   ║▐
║     C, C++, Obj-C           HTML, CSS             Spanish (int)     ║▐
║     Basic Assembly         Javascript            Japanese (beg)     ║▐
║     Matlab                   Python                                 ║▐
║                                                                     ║▐
║                   -=≡≡≡≡≡≡≡≡ Software ≡≡≡≡≡≡≡≡≡=-                   ║▐
║     Adobe Creative Cloud Autodesk Fusion          Microsoft 365     ║▐
║                                                                     ║▐
║                   -=≡≡≡≡≡≡≡≡≡≡ Other ≡≡≡≡≡≡≡≡≡≡=-                   ║▐
║     Screen Printing       Bike Mechanic        Furby Technician     ║▐
║     Sketching             Illustrating                              ║▐
╟┐                                                                   ┌╢▐
╠╪═══════════════════════: Honors and Awards :═══════════════════════╪╣▐
╟┘                                                                   └╢▐
║     2nd Place NorthSec CTF ............................... 2022     ║▐
║     1st Place DerbyMUD CTF, Derbycon 9.0 ................. 2019     ║▐
║     1st Place Digerati's Atlas CTF, THOTCON 0xA .......... 2019     ║▐
║     2nd Place Badge CTF, THOTCON 0x9 ..................... 2018     ║▐
║     2nd Place Music Hack Day Miami ....................... 2014     ║▐
╟┐                                                                   ┌╢▐
╠╪════════════════════════════: Contact :════════════════════════════╪╣▐
╟┘                                                                   └╢▐
║     Email .................................... website@<domain>     ║▐
║     Blog ............................................. reset.io     ║▐
║     Github ......................................... mediumrehr     ║▐
║     Codepen ......................................... robrehrig     ║▐
╟┐                                                                   ┌╢▐
╠╪════════════════════════════: Greetz :═════════════════════════════╪╣▐
╟┘                                                                   └╢▐
║                   .:  Malörtware & cold_root  :.                    ║▐
║                                                                     ║▐
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