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FeelTech FY6600 60MHz 2-Ch VCO Function Arbitrary Waveform Signal Generator
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up8051:
Here are information how to dump STM32F1:
https://blog.zapb.de/stm32f1-exceptional-failure/
Prehistoricman:

--- Quote from: up8051 on April 04, 2020, 06:52:14 pm ---Here are information how to dump STM32F1:
https://blog.zapb.de/stm32f1-exceptional-failure/

--- End quote ---
Nice article but the author is very bold about this being the first non-invasive attack. The paper I linked found success in using power glitching to bypass the bootloader check. Power glitching is non-invasive, right?
up8051:

--- Quote from: Prehistoricman on April 05, 2020, 12:06:30 pm ---The paper I linked found success in using power glitching to bypass the bootloader check. Power glitching is non-invasive, right?

--- End quote ---

Could you please provide the link?
masterx81:
Hi!
Someone have found a way to fix the attenuation network impedance for low ranges (less than 500mv)?
I see that during attenuation there is active the 49.9ohm resistor after the opa, then the network of 100-510-100 resistors, giving 2 voltage dividers, one 49.9/100 and the other one 510/100. I have an fy6900 and have the same problem (plus a pcb design error so that the 2 100ohm output resistors after the ths are not in parallel, but this is another story :palm:)
Thanks!
Prehistoricman:

--- Quote from: Prehistoricman on December 09, 2019, 05:33:00 am ---Did you guys ever extract the built-in firmware?

I found this paper that extracted firmware from an STM32F1 series MCU 'easily':
https://tches.iacr.org/index.php/TCHES/article/download/7390/6562/
Page 9/10 (207/208)

Sounds like a fun project.

Edit:
And by an interesting coincidence, this paper specifies a FeelTech unit for generating their attack glitches.

--- End quote ---
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