iamlive VS serverless-puresec-cli

Also things like this (same guy) if you have a sandbox to play in with wider permissions and are trying to build a more scoped profile: https://github.com/iann0036/iamlive

I know there is a tool called iamlive that logs all API calls on your local machine. So you can run commands as an admin user locally while this is running, and find out what permissions were needed. Then you tear down the infra you just deployed, and add those same permissions to a service user of some kind (e.g. a CICD role) to avoid over-privileging it. It's messy but it can be helpful.

actually Ian (aws hero) has a tool that does exactly this

https://github.com/iann0036/iamlive

I have used https://github.com/iann0036/iamlive with great success in the past. On high level, the approach you are describing is iamlive on steroids and UX improved.

Kudos on launch, will check your beta

Thanks! Permissions are determined per resource or datasource. There's no easy way that I had found, especially if you want this done statically, https://github.com/iann0036/iamlive does it by inspecting your api calls but there's always a look up somewhere. Hopefully ill manage to get a few community contributions and get the ball rolling, i've made it as easy as I could to add support for other resources without you even really having to know golang.

IAM isn’t fun, but there’s lots of options.

https://pypi.org/project/access-undenied-aws/ will allow you to start with least privilege and fix specific issues.

https://github.com/iann0036/iamlive allows an admin to perform the action via CLI and capture the policy.

Access advisor can inspect how you actually use the role and give suggestions on what to remove.

A more helpful suggestion is to experiment with these tools and then find gaps in IAM actions and submit those as feature requests via your TAM.

There’s a serverless-puresec-cli plugin that assists in this process. Puresec scans your functions to see which AWS resources they're accessing and how to automatically create least-privilege roles. It doesn't cover all resources yet, but it is a good start if you're interested.