ESP32 SWD Flasher for nRF52

This software makes it possible to Read and Write the internal Flash of the Nordic nRF52 series with an ESP32 using the SWD interface. A tool to exploit the APPROTECT vulnerability is included as well.

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To flash an nRF52 connect the following:

• nRF52 SWDCLK to ESP32 GPIO 21
• nRF52 SWDIO to ESP32 GPIO 19
• nRF52 GND to ESP32 GND to N-Channel MOSFET GND (Optional: O-scope GND Clips)
• Then power the nRF52 as needed

To bypass the Readout protection (APPROTECT) of an nRF52 connect all of the above and the following:

• nRF52 3.3V Power VDD to ESP32 GPIO 22 (Optional: O-scope Channel 2 Probe)
• N-Channel MOSFET PWM+ to ESP32 GPIO 5 (as shown)
• N-Channel MOSFET VOUT- to nRF52 DEC1 (as shown) (Optional: O-scope Channel 1 Probe)
• Then power the nRF52 as needed

This repo is explained and demonstrated in these videos (click to watch):

Required Hardware

• ESP32 Development Board
• N-Channel MOSFET Board
• nRF52 Series Board
• Optional: Oscilloscope

HowTo:

Use Visual Studio Code with PlatformIO to compile and upload the project.

Note: The Arduino IDE is not supported any more!

Change the WiFi credentials in Web.cpp and the Pinout to your needs in the platformio.ini file

Upload the data/index.htm to the ESP32 via the ip-address/edit web editor

ESP32 Glitcher schematic:

nRF52832 Glitch Tip, way better results with these 2 caps removed

Credits go to LimitedResults for finding the Power glitching Exploit: https://limitedresults.com/2020/06/nrf52-debug-resurrection-approtect-bypass-part-2/