Machine Synopsis

Atlas is a Hard difficulty machine that demonstrates advanced exploitation techniques through Java deserialization vulnerabilities and .NET cryptographic analysis. The machine features a Spring Boot web application using the vulnerable Castor XML library for marshalling / un-marshalling operations, leading to remote code execution via Java RMI exploitation. Privilege escalation involves reverse engineering a .NET `WinSSHTerm` application, performing cryptographic analysis of AES-256-CBC encryption with PBKDF2-SHA1 key derivation, and recovering administrator credentials through password brute-forcing and dynamic debugging techniques.