Can anyone provide information on some good sources for pen-testing challenges, in VMWare image format? Meaning, I'm looking for host images that I can download (or otherwise obtain on CD/DVD), which I can use to improve my pen-testing/hacking skills.
I've already completed the three primary challenges available from Heorot.net (Wilhelm), as well as those provided as part of the CPT exam. I've found all of these to be very challenging and a great source of hands-on experience, so I'm searching for more.
Thoughts would be appreciated!