Dev Tools · 1h ago
EEPROM Hijacking on 8051: Binary Patching for Embedded Security
This article details a method to intercept SDCC-compiled functions on 8051 microcontrollers via direct binary hooks. It replaces compiler-generated code with optimized assembly routines in unused EEPROM space. The technique enables conditional bypass of security checks while maintaining normal behavior otherwise.
Meridian48 take
While niche, this demonstrates low-level firmware manipulation that could be used for both legitimate optimization and malicious tampering.
embedded-systemsbinary-patching