I need a Win 7 image with no updates or service packs. Where do I find one? Trying to learn and perform a pentest.

You really need to provide some more information about the product you want. I cannot provide you with anything since I don't know what you want but please have a look the link below and see if you can find the release you are looking for:

 

If you need Windows 7 RTM, look for ISOs without "with_sp1" in its filename.

Edited March 11, 20205 yr by Jan Krohn
removed link

I'm not sure whether these downloads are authorized by MS, so I'm removing the link. Better safe than sorry. However, it's one of the best sources for old versions of Windows and Office, and all files I've tested so far do pass the hast tests.

To find the page without link: it has something to do with the-eye, and is based in the .EU 😉