Starlink User Terminal Teardown

a year ago

Stephen Hawking emphasizes the necessity of space exploration for humanity's future.
Starlink, a LEO satellite internet service by SpaceX, uses user terminals to connect to satellites and ground gateways.
New Starlink satellites feature laser links for inter-satellite communication, reducing reliance on ground stations and improving efficiency.
DARKNAVY investigates the Starlink user terminal, focusing on the antenna (UTA).
The UTA's PCB is dominated by RF front-end chips and a custom quad-core Cortex-A53 SoC by STMicroelectronics.
Security measures include disabling UART debug interfaces post-fault-injection attacks.
Firmware extracted from eMMC reveals unencrypted boot chain, kernel, and filesystem components.
The UTA's network stack bypasses the kernel, similar to DPDK, for efficient packet handling.
A security chip, STSAFE-A110, provides UUID, certificate management, and key derivation.
An 'Ethernet Data Recorder' program logs telemetry data but doesn't appear to collect user privacy data.
41 SSH public keys are automatically added during device initialization, raising security concerns.
Satellite technology's evolution highlights the growing importance of space security.

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