Hardware Hacking

Introduction️ Nordic nRF51 is a series of system-on-a-chip (SoC) developed by Nordic Semiconductor. These chips are designed specifically for low power and low energy applications in the field of wireless connectivity. The nRF51 series includes several models, such as the nRF51822 and the nRF51802, among others.️ These chips are widely used in low-power devices, such as wearables, IoT sensors (Internet of Things), health devices, and other devices that require efficient connectivity and minimal energy consumption. In the case that we need to perform a reverse engineering analysis on some of these devices it will be necessary to obtain a copy of the firmware from the chip itself of the device.️ ...

Introduction️ Remote controls by infrared (IR) are electronic devices that use infrared signals to communicate with other electronic devices, such as televisions or air conditioners. The basic operation of an IR remote control is based on the emission of infrared signals from the remote towards an infrared receiver in the device being controlled.️ These signals contain specific codes that are interpreted by the receiving device, causing the corresponding action to be executed, such as turning the device on and off, changing channels, or adjusting volume. The infrared signals generated by the IR LED are modulated, meaning the light intensity is periodically modified according to a specific pattern. This modulation pattern is unique for each button or function on the remote control.️ ...

Introduction️ Between the capabilities of the device Flipper Zero is the decoding of radio protocols below 1 GHz (Sub-GHz) frequencies. One of the available applications is Weather Station that decodes signals from temperature and humidity sensors. Due to the architecture of the application and the nature of the code project it is possible to add new protocols to the application.️ We will add the TWINS protocol based on ThermoPRO-TX4 and Polaroid based on inFactory-TH. We will also observe how to compile the application.️ ...