ICSREF is a modular framework for automated reverse engineering of industrial control systems binaries, with specific focus on CODESYS binaries compiled using the CODESYS v2 compiler. The framework provides automated analysis capabilities for PRG programs through several core functions: - Binary blob delimitation to identify functions and routines within compiled code - Detection and identification of calls to dynamic libraries used by industrial control systems - Recognition of calls to static libraries while excluding CODESYS-specific libraries The tool targets the CODESYS platform, which is widely deployed in programmable logic controllers (PLCs) and industrial automation systems. By automating the reverse engineering process, ICSREF reduces the manual effort typically required to analyze industrial control system binaries. The framework was developed by Tasos Keliris and documented in academic research presented at the Network and Distributed System Security Symposium (NDSS) in 2019.