There are of Cobalt Strike that are officially supported or sanctioned. The software is commercial, and users must purchase a license to use it. That being said, there are a few free trials and alternatives you could consider:
If you are looking to download Cobalt Strike for free, it is important to understand that there is no official "free" version of this professional adversary simulation software. Cobalt Strike is a high-end commercial tool developed by Fortra , primarily used by ethical hackers and red teams. cobalt strike download free