A guide for breaking into computer networks from the Internet v3.1 – Includes host enumeration, scanners, custom tools, protocols, windows information, and much more. PDF format.
You can download it from the following link: https://packetstormsecurity.com/files/download/25331/hackingguide3.1.pdf
Source: https://packetstormsecurity.com/files/25331/hackingguide3.1.pdf.html