Book Image

Hands-On Penetration Testing on Windows

By : Phil Bramwell
Book Image

Hands-On Penetration Testing on Windows

By: Phil Bramwell

Overview of this book

Windows has always been the go-to platform for users around the globe to perform administration and ad hoc tasks, in settings that range from small offices to global enterprises, and this massive footprint makes securing Windows a unique challenge. This book will enable you to distinguish yourself to your clients. In this book, you'll learn advanced techniques to attack Windows environments from the indispensable toolkit that is Kali Linux. We'll work through core network hacking concepts and advanced Windows exploitation techniques, such as stack and heap overflows, precision heap spraying, and kernel exploitation, using coding principles that allow you to leverage powerful Python scripts and shellcode. We'll wrap up with post-exploitation strategies that enable you to go deeper and keep your access. Finally, we'll introduce kernel hacking fundamentals and fuzzing testing, so you can discover vulnerabilities and write custom exploits. By the end of this book, you'll be well-versed in identifying vulnerabilities within the Windows OS and developing the desired solutions for them.
Table of Contents (25 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Ettercap filters – fine-tuning your analysis


We've seen just how powerful Ettercap can be out-of-the-box. Where Ettercap really shines is its content filtering engine and its ability to interpret custom scripts. Ettercap makes man-in-the-middle attacks a no-brainer; however, with filters, we can turn a Kali box running Ettercap into, for instance, an IDS. Imagine the combined power of our bridged sniffing attack and custom filters designed to interpret packets and take action on them: dropping them, and even modifying them in transit.

Let's take a look at a basic example to whet our appetite. You may immediately notice the C-like syntax and the similarity to Wireshark display filters. There's a lot of conceptual overlap here; you'll find that analysis of patterns with Wireshark can yield some powerful Ettercap filters:

if (ip.proto == TCP) {
  if (tcp.src == 80 || tcp.dst == 80) {
    msg("HTTP traffic detected.\n");
  }
}

Translated into plain English, this says, test if the IP protocol is...