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hack the box machine writeups

I2C - Inter-Integrated Circuit

contents

I2C (Inter-Integrated Circuit), pronounced “I-squared-C” or “I-two-C”, is a popular communication protocol mainly used for low-speed, short-distance communication in embedded systems.

Analysis#

:warning: Enable I2C on the Raspberry Pi via raspi-config

  • i2c-tools

    sudo apt-get install i2c-tools
i2cdetect -y 1

  • eeprog

    wget http://darkswarm.org/eeprog-0.7.6-tear5.tar.gz
tar -xvf eeprog-0.7.6-tear5.tar.gz eeprog-0.7.6-tear12/
cd eeprog-0.7.6-tear12/
make
sudo make install

  • HydraBus

    i2c1> show pins
i2c1> scan

Read / Write#

  • Read: ./eeprog -x /dev/i2c-1 0x50 -16 -r 0x00:0x10
  • Write: echo "hello" | ./eeprog -f -16 -w 0 -t 5 /dev/i2c-1 0x50

References#