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stacksmashing

@stacksmashing@infosec.exchange
  • Open on infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that!

Contact: contact@stacksmashing.net

2426 Followers
87 Following
47 Posts
Joined November 08, 2022
YouTube:
https://youtube.com/stacksmashing

Posts

Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jul 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @r3pek@mastodon.r3pek.org
@r3pek@mastodon.r3pek.org @yetzt@social.yetzt.me Only happens in some browers/tabs for me
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jul 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @yetzt@social.yetzt.me
@yetzt@social.yetzt.me Only happens in some browers/tabs for me
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jul 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
(It works on some browsers but not in others)
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jul 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Did KiCAD get compromised? Or some over-eager AI-scraping prevention?!
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stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jul 22, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
If the sandbox escape was so advanced then publish the details.
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stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jun 11, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

My DEF CON talk "Hacking jetskis - from Sea-Don't to Sea-Doo" got accepted 🥳

We'll be having some good fun - such as bypassing the immobilizer using a custom Flipper Zero app, building a custom diagnostic adapter, and some big plot-twists 🛥️

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stacksmashing
stacksmashing @stacksmashing@infosec.exchange · May 16, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

Opposite of solder-pr0n: Messed up the stencil solder application and was hoping for surface tension to fix it for me 🥲

The expired paste probably didn't help either

Your browser does not support the video tag.
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · May 08, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

This guy doesn’t even use AI for bug hunting 🙄

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stacksmashing
stacksmashing @stacksmashing@infosec.exchange · May 06, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

Non-technical teams are now shipping production vulns

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Apr 04, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

Told someone their "vulnerability report" is bs (result of an automatic scanner that has a false positive...)

This was the response 😑

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 30, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

Sometimes it’s nice to go back to basics:

Built firmware that’s just 246 bytes, uses no RAM at all, and runs parasitically from a 1-wire bus at just 0.2 mA.

Yet it emulates a full jetski key!

You can see voltage rising until the chip starts running based on the BOD threshold.

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 25, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

If you ever lose the keys to your older Sea-Doo Jetski you might find these bytes useful when talking to the ECU😇

95 BC 2F 02 04 A4 75 BE

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 25, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

Option A: Upgrade iPhone to iOS26 and have to use liquid glass

Option B: Get pwned by DarkSword malware

I don't know which one is worse

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 18, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @timonsku@mastodon.social
@timonsku@mastodon.social I'm just glad my "transmission line" works at all :D
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 17, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @DF3LX@social.darc.de
@DF3LX@social.darc.de I haven't measured it yet - but the directional effect is very very noticable. The antenna is just a random cheap one. I was frustrated with all nRF-based BLE sniffers that I could find only having not-so-great chip-antennas. Even with a 2.4GHz stub-antenna this one performs sooo much better
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 17, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 17, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

Sometimes, you simply need Bluetooth HIGH Energy📡

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 17, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

If the datasheet says to use tantalum capacitors - then use tantalum capacitors!

Blue = Ceramics
Yellow = Tantalum

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 09, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @G33KatWork@infosec.exchange
@G33KatWork@infosec.exchange typing Perl gets you a 20% discount on your next colonoscopy
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 08, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @notbobbytables@infosec.exchange
@notbobbytables@infosec.exchange @CanLehmann@mastodon.social deprecated but not forgotten 🤘
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 08, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @hisold@toot.io
@hisold@toot.io you get sandboxed into mspaint.exe
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 08, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

Simple age check for Linux:

Just have the shell ask the user to check the host IP on first boot.

If they type ifconfig they are old enough, if they type ip they deserve to be restricted from their computer 😇

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 06, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

Things I didn’t see coming: apparently I own a Game Boy signed by a Eurovision contestant?! 😆

https://youtu.be/8XR2RvfZ-68

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Mar 05, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

No JLC, component placement is not correct 😂

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Feb 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

Won today’s bet of “Do I really have no oil pressure, or is the gauge just broken?” 😆

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Feb 27, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

Wow, used Yamaha 01V96 are a steal - and 17 motor faders are a lot of fun 😀

Your browser does not support the video tag.
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Feb 20, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Boosted by Fe₂🦀₃⋅H₂🦀 @RustyCrab@clubcyberia.co
Yes VSCode, I obviously want to use the color-picker to edit my address offsets in Arm assembly 😂
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Feb 05, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

Fancy, board-house sent me x-rays of my PCBs!

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Feb 03, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

My first post on the RaspberryPi Blog 😍

We've extended the RP2350 side-channel hacking challenge to April 30 - and even better: To make attacks for the challenge easier, we decided to disable the random chaffing and some more mitigations!

https://www.raspberrypi.com/news/rp2350-hacking-challenge-2-less-randomisation-more-correlation/

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 29, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @tavisco@bolha.us
@tavisco@bolha.us @draconigen@packmates.org There's nothing from the old iPod firmwares in there :) I think it's just a nice easter-egg
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @tavisco@bolha.us
@tavisco@bolha.us This one I know from way back - the iPod firmware used to have that in it too!
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

@drwho@masto.hackers.town Ah if you mean the thing underneath: That's a PCbite set

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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
The PCB is suuuper sensitive. I ripped off three pads so far... To get to chip-select I had to solder onto the tiny tiny tiny via barrel😵‍💫
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
9d3e36fc632d77f24c810cb89892dd1959dfb05b output.bin (Created from multiple dumps, something is messing with the signal)
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @dzwiedziu@mastodon.social
@dzwiedziu@mastodon.social just a random QFP chip carrier I had laying on the table
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stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
lfg
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stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
Pokey dokey
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
For those playing along at home: Preliminary flash pin-out! 13 - SPI Flash CLK 16 - SPI Flash DI / MOSI 18 - SPI Flash DO / MISO 19 - SPI Flash VCC 20 - SPI Flash CS
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
Pulled off the flash and soldered on some magnet-wire on all of the pins to get a decent pin-out. This stuff is smol! 🤏
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
Numbered the test-pins on the back of the device - let's try to document the signals!
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Open post
stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
But there's at least something to dump - the SPI flash chip seems to be a Winbond W25Q64
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stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
Now interestingly this chip variant - CKABD0 - does not appear in the official datasheet. Package variant: CK (WLCSP) Function variant: AB - not listed in the datasheet Hardware revision: D Production device identifier: 0 Likely that this version has enhanced AP protection 😭
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stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
Now, the question we've all been wondering: Which microcontroller did they use this time? It's the NRF52840 - a chip very similar to the one in the first AirTag - and that, at least in earlier revisions, is vulnerable to the same fault-injection attack! Time to dive in!
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stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
On the other side we have again have a plastic cover - and we can already see the UWB shine through (the silver thing) and a nice antenna connection!
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stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
Not much new on the backside! The accelerometer (black blob on top) seems to still be there, and otherwise just caps.. And a lot of test-points that look quite similar to the ones from the first AirTag (see second picture of the first generation by Colin O'Flynn)
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stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange
Replying to @stacksmashing@infosec.exchange
My first issue: I couldn't get the battery cover removed! Instead I used an x-acto knife to just cut out the entire battery assembly 😵‍💫 Impatient? Me? Never!
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stacksmashing
stacksmashing @stacksmashing@infosec.exchange · Jan 28, 2026
stacksmashing
@stacksmashing@infosec.exchange

I'm an IT security researcher, and sometimes I make videos about that! Contact: contact@stacksmashing.net

infosec.exchange

The new AirTags 2 just arrived!

Time to take them apart 🧵

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