Add Apt package manager persistence module

[aringo]

This module will run a payload when the package manager is triggered. Module installs a pre-invoke hook for APT in apt.conf.d.

Verification

• Start msfconsole
• Get a privileged session on a target that uses the Apt package manger
• use exploit/linux/local/apt_package_manager_persistence
• Choose a payload and set options
• exploit
• Verify Wrote hook file , wrote binary
• Verify fail if no permissions to write hook or binary
• use exploit/multi/handler/
• Choose a payload and set options
• run
• On target run sudo apt-get update
• Verify Caught a root session
• Documentation Included

[aringo]

There is no need to check for apt as the first write attempt is to an apt specific folder. If apt is not installed the folder will not exist and so the write check should fail. Changed the error message to reflect that.

[aringo]

Changed some of the quotes and also ran a rubocop to try to find some space formatting. I did not see the use of single quotes vs double quotes in the docs, although covered under rubocop. Was mostly sticking to double quotes since there was a lot of string interpolation.

[jrobles-r7]

Release Notes

The linux/local/apt_package_manager_persistence exploit module has been added to the framework. This module adds a hook to execute a payload when apt update is ran on the host.