September 2024
Intermediate to advanced
408 pages
7h 29m
English
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17 STM32 FPB Glitch
There are many brilliant attacks to be found in Obermaier, Schink, and Moczek (2020), but my favorite is an escape from RDP Level 1 of the STM32F103 and also one of its clones, the APM32F103 from Geehy. This one involves a lot of moving parts, so gather ’round and pay attention!
First, recall from Chapter 2 that RDP Level 1 disables flash memory when a JTAG debugger is attached, but that the connection is allowed and all SRAM is available to the debugger. Resetting the chip will disconnect the debugger and reconnect flash memory, but it does not erase SRAM.
Second, the STM32 chips can boot from SRAM, ROM, or flash memory depending upon the values sampled on the BOOT0 and BOOT1 pins at startup. Flash has full access to memory, ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.