# 047 - The Sun, The Moon, The Stars

- Show: [Unnamed Reverse Engineering Podcast](https://hardwarepodcasts.com/podcast/unnamed-reverse-engineering-podcast)
- Published: 2021-05-16
- Length: 50m
- Page: https://hardwarepodcasts.com/podcast/unnamed-reverse-engineering-podcast/2021-05-16-047-the-sun-the-moon-the-stars
- Listen: https://unnamedre.com/episode/47

## Summary

Jen Castillo and Alvaro Prieto discuss recent reverse engineering projects, including Colin O'Flynn's teardown of the Apple AirTag, which revealed an nRF52 microcontroller and a vulnerability allowing firmware dumping via the Pocket Glitcher. They also cover a method to transmit arbitrary data through Apple's Find My network, a 70% reduction in GTA Online loading times by patching a slow JSON parser, and reverse engineering of Reolink IP cameras and eInk price tags. The hosts highlight past guests' work on the LPC55S69 microcontroller and the Asahi Linux project for the Apple M1 processor, noting a trend toward better security practices in hardware design.

## Chapters

- [0:28](https://hardwarepodcasts.com/podcast/unnamed-reverse-engineering-podcast/2021-05-16-047-the-sun-the-moon-the-stars#t=28) Introduction: Jen Castillo and Alvaro Prieto catch up
- [13:20](https://hardwarepodcasts.com/podcast/unnamed-reverse-engineering-podcast/2021-05-16-047-the-sun-the-moon-the-stars#t=800) Apple AirTag teardown by Colin O'Flynn and nRF52 debugging
- [19:02](https://hardwarepodcasts.com/podcast/unnamed-reverse-engineering-podcast/2021-05-16-047-the-sun-the-moon-the-stars#t=1142) Arbitrary data transmission via Apple Find My network
- [22:19](https://hardwarepodcasts.com/podcast/unnamed-reverse-engineering-podcast/2021-05-16-047-the-sun-the-moon-the-stars#t=1339) Optimizing GTA Online loading times by patching slow parsers
- [27:08](https://hardwarepodcasts.com/podcast/unnamed-reverse-engineering-podcast/2021-05-16-047-the-sun-the-moon-the-stars#t=1628) Phasmophobia gameplay and Reolink camera reverse engineering
- [34:25](https://hardwarepodcasts.com/podcast/unnamed-reverse-engineering-podcast/2021-05-16-047-the-sun-the-moon-the-stars#t=2065) Dmitry's work on eInk price tags and unknown microcontrollers
- [38:26](https://hardwarepodcasts.com/podcast/unnamed-reverse-engineering-podcast/2021-05-16-047-the-sun-the-moon-the-stars#t=2306) Exploiting undocumented hardware in LPC55S69 and Asahi Linux on M1

## Topics

- [Debugging & failure analysis](https://hardwarepodcasts.com/topic/debugging-and-failure-analysis)
- [Microcontrollers & dev platforms](https://hardwarepodcasts.com/topic/microcontrollers-and-platforms)
- [Security & privacy](https://hardwarepodcasts.com/topic/security-and-privacy)
- [Chips, FPGAs & semiconductors](https://hardwarepodcasts.com/topic/chips-and-fpgas)
- [Embedded firmware](https://hardwarepodcasts.com/topic/embedded-firmware)

## Most relevant to

makers and hobbyists

## Mentioned

- Apple AirTag (product)
- nRF52 (chip)
- Pocket Glitcher (tool)
- GTA Online (product)
- Phasmophobia (product)
- Reolink (company)
- LPC55S69 (chip)
- Apple M1 (chip)
- Asahi Linux (other)

## Related episodes from other shows

- [Ep 311:  AirTag Hack, GPS Rollover, and a Flat-Pack Toaster](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-03-07-ep-311-airtag-hack-gps-rollover-and-a-flat-pack-toaster) (Hackaday Podcast)
- [Cassette decks have browsers?](https://hardwarepodcasts.com/podcast/the-amp-hour/2021-05-24-cassette-decks-have-browsers) (The Amp Hour)
- [Another LPC55 ROM Vulnerability](https://hardwarepodcasts.com/podcast/oxide-and-friends/2022-04-05-another-lpc55-rom-vulnerability) (Oxide and Friends)
- [414: Puff, the Magically Secure Dragon](https://hardwarepodcasts.com/podcast/embedded-fm/2022-05-26-414-puff-the-magically-secure-dragon) (Embedded.fm)
- [Hardware Security with Matt Brown](https://hardwarepodcasts.com/podcast/the-amp-hour/2025-07-17-hardware-security-with-matt-brown) (The Amp Hour)

## Citing this page

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