xOffense: An AI-driven autonomous penetration testing framework with offensive knowledge-enhanced LLMs and multi agent systems. - Phung Duc Luong; Le Tran Gia Bao; Nguyen Vu Khai Tam; Dong Huu Nguyen Khoa; Nguyen Huu Quyen; Van-Hau Pham; Phan The Duy (CoRR, 2025)