Running vmware vmdk file in virtualbox

http://techathlon.com/how-to-run-a-vmdk-file-in-oracle-virtualbox/

Kali linux provides virtual machine release.

Download zip, check sha1sum.

Unzip the files into a virtualbox hdd folder.

Create a new machine in virtualbox using 'existing hard drive'.

Select .vmdk file as the hard disk.

Run.