Technical Analysis: Exploiting the Tesla Wall Connector via Charge Port Firmware Manipulation
By
p_stuart82
Crisp on the outside, thoughtful on the inside. A keeper.
Summary
This article details the technical process of exploiting a Tesla Wall Connector through its charge port connector. It describes the firmware update procedure over Single-Wire CAN, including opening a UDS session, authenticating with Security Access, preparing and erasing slots, pushing firmware via Request Download/Transfer Data/Request Transfer Exit, validating the image, and rebooting. The article focuses on the AW-CU300's dual firmware slot system and the exploitation methodology.
Key quotes
· 5 pulledOpen a UDS session (type 2).
Authenticate with Security Access (level 5, XOR-0x35 algorithm).
Run routine 0xFF00 to prepare and erase the passive slot.
Push the firmware with Request Download / Transfer Data / Request Transfer Exit.
Run routine 0x202 to reboot.
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