Mtkclient -

Report Date: 2024-05-24 Subject: mtkclient (Open-source MediaTek USB flashing & exploitation tool) Author: Security Research Team 1. Executive Summary mtkclient is a Python-based utility designed to interact with MediaTek's proprietary bootROM and preloader protocols over USB. It exploits a critical vulnerability (dubbed "DA Injection") that allows unauthorized code execution on the device's Application Processor before the operating system loads. The tool effectively bypasses factory protections, enabling full read/write access to flash memory (including NAND and eMMC), resetting of security locks, and recovery of bricked devices.

mtkclient is the gold standard for understanding MediaTek’s boot security. Its source code provides an invaluable reference for BROM reverse engineering. mtkclient

| Operation | Command | | :--- | :--- | | Read partition table | mtk rpt | | Dump bootloader | mtk r boot1 boot1.img | | Write recovery | mtk w recovery custom_recovery.img | | Unlock bootloader | mtk da seccfg unlock | | Full flash backup | mtk rf flash_dump.bin | | Enter BROM mode | mtk reset (then connect USB with volume down) | | Operation | Command | | :--- |

Keep your device's bootloader locked if you are not actively developing. Physical access remains a critical threat. The tool effectively bypasses factory protections