A small research project that modifies srsRAN_4G's srsENB into an active IMSI catcher, stands up a fake base station that lures UEs and issues an identity request to extract the IMSI over the unauthenticated pre-AKA NAS exchange. A concrete worked example of the IMSI-catcher attack on srsRAN.
A demonstration made by modifying srsRAN 4G, described by its author as made for research purpose and to demonstrate how an IMSI catcher works. All commits date from 2024-12-14 and there are no releases. Source · checked 2026-09-28