korken89

#!/usr/bin/env python3

import sys
import os
import re
import time
import pcbnew
"""
This is a modified version of https://github.com/mithro/kicad-length-matching-checks.git
which also adds in the "Pad to die length" into the calculations (plus different formating).

egirault

Dumping the flash of the Syscan 2015 badge

The badge of the Syscan 2015 conference included an ARM-based STM32F030R8 processor running some challenges. Although SWD pins are accessible on the badge, some have noted that the STM32 is readout-protected, meaning that it will refuse to dump its flash memory.

Fortunately, two researchers (Johannes Obermaier and Stefan Tatschner) recently published a paper at the WOOT '17 conference, in which they reveal a vulnerability allowing to bypass the readout protection. Their technique allows to dump the flash one DWORD at a time, rebooting the CPU between each access.

I implemented this attack using a BusPirate and the PySWD module. Here is a quick'n dirty PoC to