CategoryHardware
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5-Min Tutorial: Gaining Root via UART
Connecting to a TP-Link WR841N router over UART with the Attify Badge — identifying GND/VCC/TX/RX, scanning for the baud rate with devttys0's baudrate.py, and dropping into a root shell, plus notes on TP-Link weakening hardware security between versions.
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5-Min Tutorial: Lifting Firmware with the Bus Pirate
Opening a TP-Link WR841N router, wiring its W25Q32.V EEPROM to a Bus Pirate over SPI, dumping the firmware with flashrom, and extracting the embedded Linux filesystem with binwalk.
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Magstripe tinkering
My hobbyist dive into magnetic stripe card technology: how magstripes encode data, and how I hacked a Square reader by bypassing its encryption chip to read raw card data, with some reflections on real-world magstripe security.
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