Some security courses use 20-year-old toolkits to teach foundational concepts. For example, the port scanners and simple exploits on Vol 48 are primitive enough to analyze without crashing a modern honeypot, but complex enough to teach enumeration and privilege escalation.
While I haven’t mounted this specific ISO, previous Arirang volumes (e.g., Vol 31, Vol 40) commonly contain: arirang vol 48 iso
Universities with North Korean studies programs (Yonsei University in Seoul, or Universität Wien) have offline archives. You may request access for peer-reviewed research. Some security courses use 20-year-old toolkits to teach