BTRisk published a vulnerable machine like Metasploitable, on August 2017. BTRSys1 is intermediate level boot-to-root vulnerable image. Main purpose of boot-to-root images is gain shell access by exploiting vulnerable services work on machine. This information given about the image:
Machine Name: BTRSys1
IP : DHCP
Difficulty : Beginner / Intermediate
Format : Virtual Machine (VMware)
Description : This is a boot2root machine particularly educational for beginners. Follow us for next BTRSys systems. We hope you enjoy it!
Vulnhub link of this image is : https://www.vulnhub.com/entry/btrsys-v1,195/