Hi,
Is it possible to install SEP on AWS base image?
Yes;
https://aws.amazon.com/marketplace/pp/B01AKC31NA/ref=_ptnr_web_symantec
https://www.symantec.com/docs/HOWTO124307
If you're thinking of the SEP Client rather than the SEPM, then the below article confirms support for AWS:
https://www.symantec.com/docs/HOWTO80853