Nebula is a cloud C2 Framework, which at the moment offers reconnaissance, enumeration, exploitation, post exploitation on AWS, but still working to allow testing other Cloud Providers and DevOps Components.
It started as a project to unify all Cloud + DevOps Pentest and Security Techniques for a better assessment of the Infrastructures. It is build with modules for each provider and each functionality. As of April 2021, it only covers AWS, but is currently an ongoing project and hopefully will continue to grow to test GCP, Azure, Kubernetes, Docker, or automation engines like Ansible, Terraform, Chef, etc.

https://www.blackhat.com/eu-21/arsenal/schedule/index.html#nebula-a-case-study-in-penetrating-something-as-soft-as-a-cloud-25174