John LeClair

I just gave a talk at Hackfest Quebec on EMFI Fault Injection this past weekend. During that talk, I shared some of my lower cost devices in my reverse engineering arsenal. One such device is very affective and only costs around 10 dollars. What do you have on your reverse engineering bench ?

@felix__augusto @RaminNasibov one would hope and think it was that easy - but as we know - feature creep and bored engineers inject garbage into a design. Hence my desire for a physical power switch.

@john_leclair @RaminNasibov If you need a corrupted OS so much you can just hold the power button for a few seconds and it'll do that

I wanna know what idiot at HP thought THIS would be a great place to put a power button??

@cqcqcqdx I still have mine when I was very young.

The TRS-80 Micro Computer System (TRS-80, colloquially known as the "Trash-80", a desktop microcomputer developed by the Tandy Corporation and sold through their Radio Shack stores. Launched in 1977, it is one of the earliest mass-produced and mass-marketed retail home computers.

@ArchVillequebec I was born only a bunch of kilometers away. Getting way too touristy, cr@p souvenir shops. About the only "normal" building is across the street - "Maison Jean-Baptiste-Chevalier". Although, I could have sworn even that 300 year old house has offices in it now.

Voyage dans le temps au cœur du Vieux-Québec ! Découvrez l'intersection des rues du Marché-Champlain et Notre-Dame : un contraste saisissant entre l'effervescence de 1895 et son charme féérique d'aujourd'hui ✨❄️. Lequel préférez-vous ? L'ambiance d'époque ou la magie moderne ? 👇 #VilleDeQuebec #VieuxQuebec #HistoireQC #Quebec #Patrimoine #AvantApres

@MbarkCherguia Probably pass out...

Be 100% honest… she’s walking straight towards you in the airport 😏✈️ What’s YOUR actual reaction?

@spacenotfilled @RaminNasibov thinking about it. Vivado sometimes tanks my entire system.

@john_leclair @RaminNasibov That's a really great point. Clearly wouldn't work! You could absolutely hardwire in some form of a killswitch though. Just like we're starting to look for phones with manual kill switches for your data,gps, etc - the same can be said about computing! You just created a market!

@BejoMas11 @RaminNasibov sometimes hold it for 20 seconds. butkiss. I have 3 identical developer laptops running ubuntu

@john_leclair @RaminNasibov Have you tried pressing the power button for more than 3 seconds? My laptop immediately turns off, bypassing shutdown, etc, no drama, just off.

@spacenotfilled @RaminNasibov what if you cannot run the script ? Ie: Ubuntu is super hung ?

@john_leclair @RaminNasibov This can be done very easily. I could write you a simple script that would do this. I bet money if you go into grok and tell it exactly what you just said, tell it your device specifications, and ask it for code for a program to do that - I bet it works. Try it

untrue. In many cases

@My1xT @Booleans_Things @RaminNasibov I actually exaggerated. 😱 I did have a laptop a long time ago that was soldered in. But it might as well be if I have to remove 15 Torx screws...

@john_leclair @Booleans_Things @RaminNasibov soldered? that's unusual, I know them screwed and glued in but soldered is an entirely new beast.

@MouserElec woo hoo .... I am going to catch me a new Rohde & Schwarz !!!!!

How to catch an engineer: Step 1: Place oscilloscope. Step 2: Wait.

@Zackktually @RaminNasibov When Ubuntu (or probably Windows (haven't used Windows in years)) gets massively scrogged - I can hold the power button down on my laptop until practically the end of time before it shuts down

@john_leclair @RaminNasibov What would be the use case for this?

@Booleans_Things @RaminNasibov Battery Soldered in. Desktop yes.

@john_leclair @RaminNasibov You could just take out the battery and unplug it

@kaaaash____ Just give me a Dell XPS. Cheap "replacement" parts on ebay.

Honestly, what is the reason behind Thinkpad's popularity among engineer's?

@MadelnCanada Hell Yeah !!!!! RIP 😢

We should also put John Candy on our bills and call it the “Uncle Buck” 🤝🇨🇦

@Oceanbreeze473 I was doing that in the 90s while in college.

Most guys today don’t know how to change a flat tire.

@jaskirat @Montreal Ville de Québec ?

Heading to best city in 🇨🇦.

@InsaneReality that is a lawnmower is always designed to "aim" the piston toward the front. I have seen pistons go out the front - just not that catastrophic.

Man’s lawn mower suddenly explodes out of nowhere

@brockpierson I waited in a very long line that went outside and kept going and going ...

Be honest, did you use this when it was new?