Tildes Video Thread

37C3 - Breaking "DRM" in Polish trains

Reverse engineering a train to analyze a suspicious malfunction

We've all been there: the trains you're servicing for a customer suddenly brick themselves and the manufacturer claims that's because you've interfered with a security system.

This talk will tell the story of a series of Polish EMUs (Electric Multiple Unit) that all refused to move a few days after arriving at an “unauthorized” service company. We'll go over how a train control system actually works, how we reverse-engineered one and what sort of magical “security” systems we actually found inside of it.

Reality sometimes is stranger than the wildest CTF task. Reality sometimes is running unlock.py on a dozen trains.

The talk will be a mix of technical and non-technical aspects of analysis which should be understandable for anyone with a technical background. We’ll briefly explain how modern EMUs look like inside, how the Train Control & Monitoring System works, and how to analyze TriCore machine code.

YouTube - media.ccc.de - 29th December 2023

BaseSk8er on YouTube has some incredibly interesting videos about controversial, obscure, and old games. Highly recommend checking out the channel if that is something you are interested in.

New video from Baumgartner Restoration: Goodbye, BFAR.

Despite the title, he is not actually quitting the channel. From the video description:

For the next several months, I’ll be leaving my studio and visiting the galleries, workshops and factories of people who make the world art possible, sharing their dedication, craft and expertise as we take a look Behind The Canvas.

This new 8-part series will explore a side of the art world that often goes unseen, from art handlers to linen factories, frame guilders and paper conservators, join me as we meet the dedicated, hard-working people who rarely receive credit and explore their work that's so essential to making the world of art we love possible.

Starting next week the series will premiere here on YouTube with a new episode every other week, but for my Patreons, you’ll get the entire series; all 8 episodes add and sponsor free right away! In addition Patreon subscribers will get access to bonuses from each episode.

So, I look forward to having you join with me on this journey together

And from his pinned comment:

Also, for those concerned, my regular videos aren’t going away- this series is just an additional project I made for y’all (ok, also for me 😊)

Alfie - the Odd Job boy: https://www.youtube.com/watch?v=4ckVGEffs7U

50 minutes long.

Alfie is the kind of person who is always going to have problematic interactions with authority, whether that's the boss or the council who run the local tip or, well, lots of people. I found this sympathetic documentary to be warm and kind.

Clitheroe is in the north west of England. Google Maps, Wikipedia

From the description:

After leaving school with no qualifications and struggling to hold down a full time job, 18 year old Alfie set up his own business on his tandem bike and trailer. Despite becoming a bit of a local hero in his hometown of Clitheroe, Alfie is forced to find other ways of making ends meet after being banned from the local tip.

Simon Anthony from Cracking the Cryptic was on Numberphile recently, explaining some Sudoku set theory, and the Phistomefel ring:
A Sudoku Secret to Blow Your Mind - Numberphile
The Most Mathematical Sudoku - Numberphile

p.s. CtC full solve of the puzzle featured in the above videos:
A Difference Of Squares: A Sudoku Masterpiece
https://app.crackingthecryptic.com/8HQfQ4tD9q

cc: @vektor