Create a new VM with the Type set to and Version set to Linux 2.2 or Other Linux (32-bit) .
: While originally intended for VMware , these machines can be run on VirtualBox . VirtualBox Configuration :
Set the network adapter to or NAT Network so your attacking machine (like Kali Linux) can communicate with it.
The general workflow for tackling a Kioptrix machine follows a standard pentesting process: Kioptrix Level 1 CTF Walkthrough - Boot-To-Root