2.2 KiB
2.2 KiB
ESP32
Tools
- espressif/esptool - Espressif SoC serial bootloader utility
- jmswrnr/esp32knife - Tools for ESP32 firmware dissection
- scientifichackers/ampy - Utility to interact with a MicroPython board over a serial connection
- ESPWebTool - Flash your ESP32 or ESP8266 through your browser.
Flashing
The ESP32 microprocessor uses the Xtensa instruction set, use Tensilica Xtensa 32-bit little-endian
in Ghidra.
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Flash a new firmware with
espressif/esptool
esptool.py -p /dev/ttyUSB0 -b 460800 --before default_reset --after hard_reset --chip esp32 write_flash --flash_mode dio --flash_size 2MB --flash_freq 40m 0x1000 build/bootloader/bootloader.bin 0x8000 build/partition_table/partition-table.bin 0x10000 build/ble_ctf.bin esptool.py -p /dev/ttyS5 -b 115200 --after hard_reset write_flash --flash_mode dio --flash_freq 40m --flash_size detect 0x8000 build/partition_table/partition-table.bin 0x1000 build/bootloader/bootloader.bin 0x10000 build/esp32-wifi-penetration-tool.bin
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Flash a new firmware with
scientifichackers/ampy
(MicroPython)ampy --port /dev/ttyUSB0 put bla.py
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Dump the flash
esptool -p COM7 -b 115200 read_flash 0 0x400000 flash.bin
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Dissect the flash
python esp32knife.py --chip=esp32 load_from_file ./flash.bin
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Flash the new firmware
# repair the checksum python esp32fix.py --chip=esp32 app_image ./patched.part.3.factory esptool -p COM7 -b 115200 write_flash 0x10000 ./patched.part.3.factory.fixed