Book Image

Advanced Infrastructure Penetration Testing

Book Image

Advanced Infrastructure Penetration Testing

Overview of this book

It has always been difficult to gain hands-on experience and a comprehensive understanding of advanced penetration testing techniques and vulnerability assessment and management. This book will be your one-stop solution to compromising complex network devices and modern operating systems. This book provides you with advanced penetration testing techniques that will help you exploit databases, web and application servers, switches or routers, Docker, VLAN, VoIP, and VPN. With this book, you will explore exploitation abilities such as offensive PowerShell tools and techniques, CI servers, database exploitation, Active Directory delegation, kernel exploits, cron jobs, VLAN hopping, and Docker breakouts. Moving on, this book will not only walk you through managing vulnerabilities, but will also teach you how to ensure endpoint protection. Toward the end of this book, you will also discover post-exploitation tips, tools, and methodologies to help your organization build an intelligent security system. By the end of this book, you will have mastered the skills and methodologies needed to breach infrastructures and provide complete endpoint protection for your system.
Table of Contents (14 chapters)

Hash functions and message integrity

Hash functions are mathematical functions that take an arbitrarily sized input string, and generate a fixed-size output called a hash value or a message digest. A good hash function
should calculate hashes easily; it will be very difficult to calculate the plaintexts of a given
hash, and it does not generate the same hash for two different inputs, except in rare cases.

There are many well-known hash functions used nowadays; they are as follows:

  • Hashed message authentication code
  • Message Digest (MD2)
  • Message Digest (MD4)
  • Message Digest (MD5), if you want to encrypt or decrypt a plaintext you can use http://md5decrypt.net/en/ shown here:
  • Secure Hash Algorithm (SHA)
  • Whirlpool
  • HAVAL
  • RIPEMD

Digital signatures

...