Deep Dive into NCR APTRA & SDC Bus: Moving from Ploutus-D Analysis to Black Box & E2E Bypass Research

The post discusses research into NCR SelfServ units, focusing on the APTRA software stack and how the Ploutus-D malware interacts with XFS middleware. The author seeks technical insights on SDC bus sniffing, bypassing end-to-end encryption in newer NCR units, and exploring black-box hardware triggering methods. They request resources such as whitepapers, legacy SDC logs, hardware schematics, or private forums discussing these vulnerabilities. The goal is to advance research from software-based execution to hardware-level exploitation in a controlled lab.