The four provided images are now available for download. Keep in mind these images have vulnerabilities and should not be run in sensitive environments!
These files are also mirrored here.
The VMs can be run using the free VMware Player or the non-free VMware Workstation, which may be provided by your academic institution. If you’d like to run these on a local ESXi server instead, grab VMware vCenter Converter Standalone to convert them to the correct format. (You’ll need to register a free account with VMware to download ESXi and vCenter Converter).