rootkits subverting the windows kernel source code

I just purchased the book "rootkits: subverting the windows kernel" by Greg Hoglund and James Butler for a research project at work. However, this book constantly refers to the source code that can be downloaded at rootkit.com, a site that has been taken down apparently after a compromise a few years back.

Anyone any idea where I could get the code that accompanies the book? (a legitimate trustworthy source of course, not some kind of shady underground forum or tor-site or whatever).

Any help is appreciated!