Hello, I'm using the latest Kali ISO imaged from a USB with 64bit architecture. I'm very new to Linux and data security but like to jump right into the deep end when learning and am very paranoid. I've looked for a solution to this and can't find one too obvious, apologies if I overlooked something.
The problem; I installed flashplayer to view a video and while I uninstalled it with no issue I am now wondering how I would revert Kali back to its original (freshly downloaded, md5 checked and untouched) condition with a command or utility. I am running it live every time but want to be able to do this just as an added layer of security while running the OS.