The "Blue" badge on TryHackMe is a recognition earned by completing the platform's "Blue" room, which is a practical, guided exercise focused on exploiting the infamous EternalBlue (MS17-010) vulnerability . This vulnerability, which affects the SMB protocol of older Windows systems like Windows 7, is the same exploit used by devastating malware such as WannaCry . To earn the badge, learners must successfully conduct a full penetration test, which includes performing reconnaissance with tools like
nmap, using the Metasploit framework to execute the exploit and gain initial access, escalating privileges to the SYSTEM level, dumping password hashes, and ultimately capturing hidden flags on the target machine . Completing this room demonstrates a hands-on understanding of how critical vulnerabilities work and the fundamental steps of ethical hacking .....