How to use

• Install Platformio CORE
• Download source EvilCrow-Keylogger. Extract the source code and name it as EvilCrow-Keylogger. Put the directory in same level with keylogger-pio
• Add jumper GPIO0 to GND for ESP32-PICO
• Open command line window. Change directory to keylogger-pio
• Run flash.bat or ./flash.sh to program 32u4 and esp32-pico

About The Sketches

Sketch	About
32u4-blank	Empty sketch for 32u4. You should program the sketch first if you want to program esp32 alone with external programmer
32u4	Sketch for ATMega32U4 part of EvilCrow Keylogger
esp32	Sketch for ESP32 part of EvilCrow Keylogger
programmer	Sketch for program ESP32 via ATMega32U4 directly

How it works

• Atmega32U4 with Arduino Lilypad USB bootloader. It wires with ESP32-PICO by hardware serial port Serial1
• The scripts program the sketch programmer to ATMega32U4 first.
• Modified esptool.py from espressif. Change FLASH_WRITE_SIZE and ESP_RAM_BLOCK to 256 bytes for match the buffer size of 32u4's serial port.
• Use 32u4'a vitual USB-CDC port to program ESP32 directly