This recipe will demonstrate how to use bash to exploit a single vulnerability across multiple systems and open a backdoor on each system. The backdoor consists of staging a Netcat executable on the target system and opening a listening service that will execute cmd.exe upon receiving a connection.
To use the script demonstrated in this recipe, you will need to have access to multiple systems that each have the same vulnerability that can be exploited with Metasploit. In the example provided, a VM running a vulnerable version of Windows XP was copied to generate three instances of the MS08-067 vulnerability. For more information on setting up a Windows system, please refer to the Installing Windows Server recipe in Chapter 1, Getting Started, of this book. Additionally, this section will require a script to be written to the filesystem by using a text editor such as VIM or Nano. For more information on writing scripts, please...