kali is the successor to the backtrack linux distributiondesigned by offensive security from the ground up as penetration testing operating system it comes with number of tools preinstalled and is based on debian linuxso you'll also be able to install wide variety of additional tools and libraries beyond what' on the os to start firstgrab kali vm image from the following urlvmware player fire it up the default username is root and the password is toor this should get you into the full kali desktop environment as shown in figure - figure - the kali linux desktop the first thing we are going to do is ensure that the correct version of python is installed this book will use python throughout in the shell (applications>accessories>terminal)execute the followingroot@kali:~python --version python root@kali:~if you downloaded the exact image that recommended abovepython will be automatically installed please note that using different version of python might break some of the code examples in this book you have been warned