Looking at the PCB & Chips - Hardware Wallet Research #2 

Sorry for those who need captions! I forgot to publish them :S but they should be there now! Please let me know right away when I forget them for a video

Hello, electronics hobbyist here. The markings on the ST chip are most likely some kind of special internal number, either ST's or Ledger's (you can get custom labelling on chips if you order enough of them, and Ledger surely did), in order to conceal the secure chip's identity (even if it's obvious after inspecting the other chips). As for the other chip, a boost converter is a kind of DC-DC converter that boosts (hence the name) DC voltage. Say, you have 3.3 V and want 5 V, then you can use a boost converter. And yes, it's most likely for producing the voltages required to drive the display. The output current cut-off function is a safety feature against overcurrent (which could burn the chip), like in the event of a short circuit.

that is one hell of a nice camera man. I'd say I'm jealous, but I wouldnt have a use for anything that extreme, not in the way of a camera anyway. so you enjoy that camera man. if it makes you feel better about your shots then take more of them man. I would assume its hella useful for doccumenting hardware and PCB's.

holy sh!t i love hw related hacking :) Hope to see more GSM videos tho :)

What kind of camera and lens?

I solved my first CTF challenge at ctflearn.com, thanks for the quality videos

**appreciates beautiful shots**

Holy shit ! Those camera shots look so professional Hard to believe it is made by one person also maintaining a full time pentesting job

JTAG? That sounds terrible @Louis Rossmann :D

I really enjoyed those shots from the new camera. I got a good laugh from your commentary while I "just enjoyed the footage from your $1,500 camera" :)

That B-Roll footage is actually quite good and adds a new charme to your video. Stay up with that!

JTAG? I have a bad feeling the chip is going to threaten to ban you from Xbox LIVE if you mess this up!

Im loving the hardware wallet videos :)

"It can speak USB" ahh I love when hardware chips are treated as humans ^^

0:24 But if I hit the subscribe button, I'll unsubscribe from your channel and that number will go down!

5 mysterious pins on the board and an enabled JTAG;) ...

"So appreciate them!" JAWOHL! 🤣

Hey, you stopped the telco series -_-

where have you been at al 2020. ;u..!! just gone from youtube. :(..!!

Most of the time the labeling is not custom, it just does not fit on the package. This is always the case for small packages, like SOT-23, but that chip might also to small to fit the full length part number. It is worth looking at the datasheet's "Packaging specifications", and maybe "Ordering informations" section to find out the chip markings, which one belongs to which part number. Mostly the complete part numbers are long, because they not just contain the chip name but also the classification (industrial, consumer grade), maybe operating frequency range if there are multiple choices, access time for RAMs, etc...

nice explaining with electronic parts specially with drawing and zoom the camera .ur d best 8)

I bet you can reprogram that puppy just like arduino or smth Maybe even try serial commands somehow

The ST8R00 is a step up DC to Dc converter, it is used to take a lower voltage and rise it to a higher one. (With a voltage of around 4/6V can provide from 6 to 12V. It might be used to supply some parts of the circuit that works with a higher voltage of the 5V of usb like the oled screen

JTAG is an industry standard for verifying designs and testing printed circuit boards after manufacture.

Best camera work ever! Totally worth the $1500

you know you're early for a LiveOverflow video when it's not captioned yet

In what way "Vires in Numeris" is "fancy language" ?....... Man that is Latin.... The way you talked about was like is was leetspeak.. :(

I thought the best thing you can do with JTAG is this: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-a67p6pziKz8.html Will be waiting what you can do with those unnamed test (SWD/JTAG) points.

didn't get anything useful, JTAG? easily disabled by sceure bit/fuse, any none stupid manufacturer will disable it by default, even it just a toster controller

If I reset the nano X, is it possible for anyone including ledger, to be able to extract the previous seed phrase?I need to send mine back for warranty. Is it safe to restore my crypto on the replacement device using my seed phrase? Will the one I return be certain unhackable?

The boost converter essentialy just bumps up the voltage idk for what though maybe the display.

Where can i find you and have a quick chat and ask you questions about how did you do that and that? Btw use your camera skills as a second job :))

Maybe you should use a higher f-number, so the aperture is more closed. That way you'll get more depth of field and more of the small chip is sharp and i focus.

Lol jtag (hardware debugger) enabled in a ledger device you can directly manipulate registers and CPU values

*_fancy language_*

I don't want to hit the subscribe button! It would unsubscribe me from this channel!

appreciate my artistic skills with a camera damn it (ノಠ益ಠ)ノ彡┻━┻

I just came here to appreciate the slick photos ;) what camera did you buy?

hah! 3:00 The video is so high res, I extracted your finger print out of it! :P

Please make sure to keep your backup phrase secure by engraving it in titanium, check it out at cryptotag.io

I'm learning how to hack right now and I want to ask on where will I start learning how to pwn.

Thanks a lot for the Pay TV smart card tip!

Boost converter is for power management.

i like the "i dont care about cookies" addon

7:21 I like these short interruptions. But can you explain how you mean this? is it total important or not for you? There a people how not have maybe the same skills in langue like dyslexia and more.

Probably stop down to a smaller aperture for the non-beauty shots? It will increase the depth of field greatly and show clearer image

Only thing I can figure about the NB0 chip might be this: imgur.com/a/UYSYYhF

Great video! :)

Awesome! I'm into learning MCU programming recently and hoping one day I could hack some smartbands (aka fitness trackers) I'm not a low-level programmer at all, just a beginner in embedded systems so your videos on reverse engineering a Ledger Nano S are just perfect for me right now. I understand what you're talking about and at the same time learning new things. Thanks a lot

Quality's so good, someone could reverse engineer your fingerprint(s). Like they did with chancellor Merkel's.

Out of curiosity... how long did this research take? And do you have some sort of methodology of keeping track of what you find along the way?

waiting for next video...

These hardware wallet videos are awesome!

The ST8R00 is basically a step down converter for power delivery. Essentially a buck converter, used to take the voltage that the USB delivers and lower it to be usable by the components that run on lower voltages on the board.

Appreciating THEM

hey, nice camera shots

I don't understand most of these videos but I still love to watch them all. Good job keep them coming!!

"I have no clue what I'm doing, but it looks good" - LiveOverflow

Great video. I was not able to follow the information as I was too excited about your shots, but that shots were amazing :P

Shots apericated

screw the timeline, the videow would be better if you hadn't menchond the Crome extension until you needed to

i like the crypto themes

I tried pushing the subscribe button but the number went down instead. What did I do wrong?

Love the photography. Great choice on getting that camera! Great video as always!

chrome again xDDDDDD

The boostconverter is like the "power supply" for the chips

APPRECIATE THEM

I APRECIATE !!1!!!11!

0:16 "vires in numeris"? I thought that means "lots of viruses"

JTAG is normally a programming interface

what do you do for a living beside youtube?

tipo-tipo!

I think they use the battery chip thing as a constant current driver

appreciated

10:45 :thinking: sound like xbox exploit

Love the camera shots. Keep doing it.

Honestly, the constant focusing of the camera is quite irritating.

No come on, Show us more of your finger prints x)

The low F stop for your b-roll is fine but I suggest having an higher F stop for your main video so more of the object you record can be infocus at a given time.

JTAG in the next video, yeeey !!!! :D

The new camera shots look great.

I love the new camera. Great footage.

Finally i was waiting patiently all weak :)

7:22

How is that safe to show us your mnemonic backup phrase?

Nice video, keep it up mate

We appreciate them! 😃

I miss the face.

what camera/ lens did you get?

i am confused about the hardware. why is ther a boost converter? ships run on 1.62 V to 5.5 V or 2.0 - 3.6 V

Love you

Helooooooi

Run to like the video. then watch

EarLY

Woah

Does anyone know where I can find apache2.4 settings for the apache2.conf configuration file in Linux?

I love your videos, I also make crypto videos if anyone is interested 😉

First

Ok

I sir....great video please make a video about making own python tools and how they works...