Trunk's Technical Blog

GoPro HERO7 Black Teardown

Posted by Mark Kirschenbaum on Oct 22, 2018

The GoPro HERO7 is an update HERO6 with 2GB vs. 1GB of ram, a new USB interface chip, and an MFI chip to associate better with iPhones. Trunk touches quickly on various security vulnerabilities with these kind of IOT devices and how to remediate them for those needing OPSEC.

Tags: Gopro, hacker, hero7, ifixit, take apart

The Etiquette of Sharing Skydiving Photos

Posted by Mark Kirschenbaum on May 03, 2018

Let me start with saying I love when people share my photos. I get gratification out of seeing my work as your profile picture, featured on your Instagram account, or even passed around Chive. I shoot because I enjoy capturing people's pure smiles in freefall. Regrettably, the truth is, most Skydiving Photographers make little to no money off of event photography. Personally, I spend 5-8 hours ingesting, editing, watermarking, and posting a weekend's worth of photos. At the bigger events, we get reimbursed for...

Latest GoPro HERO is actually a GoPro HERO5

Posted by Mark Kirschenbaum on Apr 16, 2018

We purchased a GoPro HERO (2018) the other day and after some cursory inspection we realized this camera is actually a GoPro HERO5 with the firmware crippled. To confirm our hypothesis, we decided to trick the camera to loading the GoPro HERO5 software. It loaded properly and all the features were unlocked. Even GPS and 4K at 30fps work great! Some people were worried that we're overclocking the parts. After inspecting the device tree, we can confirm the processors and DSPs between the two...

Tags: gopr, gopro hacker

The little camera that almost could skydive: Sony DSC-RX0

Posted by Mark Kirschenbaum on Jan 19, 2018

The Sony DSC-RX0 is an awesome little camera, but we don't feel it's the best for skydiving. Read up on our observations and settings after several test jumps with this camera. Check out some photos and videos produced from the Sony RX0 and compared with other solutions.

GoPro HEROBus™ 2 Research

Posted by Mark Kirschenbaum on Jan 08, 2018

FOR SECURITY RESEARCH / Interoperability with our products. The good news is the HEROBus™ is alive and well on the GoPro HERO [5-8]. The bad news is its extremely locked down and needs a BGA part and a crypto key to make it work. The needed parts are: Cypress EZ-PD CCG2 - USB type-C Controller - Accessory CYPD2104-20FNXI 20 pin $1.79 CYPD2122-20FNXI 20 pin $1.98 ATMEL ATSHA204A - Authentication Chip <- Protected! ATSHA204A-XHDA-T I2C version TSSOP $0.55 The HEROBus™ i2c Slave or Vendor...

Tags: gopro, hacks