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Trunk's Technical Blog

GoPro HERO 10 Teardown

Posted by Mark Kirschenbaum on

The GoPro HERO 10 "Kong" was just released If it wasn't for the milestone edition number, one may consider this camera a "HERO 9+" as the hardware under the hood hasn't changed much. The only major change is the GP2 processor. Hardware-wise, almost everything else, including the sensor, is the same in this iteration. Of course, the power comes from the software advancements and the new powerful imaging pipelines.  With this latest processor, GoPro Inc. is able to step up the frame...

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Sony Camera BLE Control Interface

Posted by Mark Kirschenbaum on

Sony Cameras are now supporting a Bluetooth Low Energy (BLE) based control protocol. This interface allows a client to control as well as acquire status from a BLE enabled remote.  [Sony RMT-P1BT - Remote works similarly as the JJC RMT-P1BT] This article assumes the reader knows basic BLE terminology so perhaps have a read on the Introduction of BLE from Adafruit if you're unfamiliar. This is not a step-by-step guide, but a broad reference guide on this protocol. As always, I'm available for hire if...

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GoPro Hero9 Black Teardown

Posted by Mark Kirschenbaum on

Updated: Sept-21-2020GoPro HERO9 (Boilers) was just released. There are some significant hardware changes notably the new sensor-lens combo, WiFi-Bluetooth chipset, front LCD, and a higher power density battery. However, most of the power comes from software enhancements. Although not a physical teardown,  we're able to extrapolate everything from the camera's firmware updates. Logs and such will be posted on our GitHub Repo as our research continues. The following are are the major changes from the GoPro HERO8: (Image credit: WinFuture.de) Finally a new 24 megapixel sensor...

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A practical guide for cracking AES-128 encrypted firmware updates

Posted by Mark Kirschenbaum on

This article shares my experience on extracting the AES-128bit bootloader keys from a secure microcontroller. The writeup has morphed into a complete guide overtime and works well as a starting point for individuals wishing to use Power Analysis based Side Channel Attacks on real world microcontrollers.

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GoPro Media Mod Teardown

Posted by Mark Kirschenbaum on

Built for Vloggers the GoPro Media Mod allows users to accessorize their GoPro with an external LCD and microphone. Code named "Borg" it finally shipped three months later than the original GoPro HERO8 release date. From our analysis, this delay was caused by the software lagging the hardware.  Features User configurable stereo audio input:   (Standard Mic, Standard Mic+, Powered Mic, Powered Mic+, Line In) Unidirectional built in microphones. Media Mod front or rear. Micro-HDMI output for monitoring, playback, & recording. Monitoring / Playback 4K (3840x2160@30Hz) maxRecording...

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