Reverse Engineering the Proscenic 850T Robot Vacuum

The article discusses a reverse engineering project focused on controlling a Proscenic 850T robot vacuum without relying on cloud services. The author encountered issues with remote control functionality in the official app and decided to explore direct local control methods.

Key Points:

1. Problem Identification:

   • The official app had limitations, such as delays and lack of real-time control.

2. Reverse Engineering Process:

   • Used Frida (an instrumentation framework for Android) to inspect network traffic between the robot vacuum and mobile application.
   • Identified necessary parameters like dev_id and local_key, which are required for direct communication with the device.

3. TinyTuya Library Utilization:

   • Employed TinyTuya, a Python library that facilitates interaction with Tuya-based smart devices using their local protocol over UDP/TCP.
   • Established direct control of the robot vacuum without cloud dependencies by sending commands directly to the device on port 6668.

4. Data Points Mapping:

   • Created a comprehensive map of data points (DPs) that represent various features and functionalities of the Proscenic 850T.
   • This mapping was derived from analyzing app behavior

Read the full article at InfoSec Write-ups - Medium

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