How to Find an AWS SSM Backdoor | CloudFoxable Bastion Host CTF

In this video we walk through the CloudFoxable — Bastion challenge (Author: Seth Art) and show how a properly placed bastion host — and the tools around it — can become the launchpad for further access. Using CloudFox and AWS Systems Manager (SSM), we demonstrate how to discover, connect to, and enumerate an EC2 bastion, then use available IAM permissions to find the flag. Small operational choices (and the right tooling) make all the difference.

We’ll show you:
💥 How to deploy the Bastion lab with Terraform and enable the challenge
🔎 How to locate the instance using cloudfox aws -p cloudfoxable instances -v2
🔐 How to connect to EC2 using the SSM Session Manager (Session Manager plugin + loot file command)
🧩 How to enumerate IAM permissions with CloudFox and turn those permissions into an objective (find the flag)
🧹 How to clean up (disable bastion_enabled and terraform apply) to avoid surprise costs
🛡️ Practical tips to harden bastion/SSM setups and reduce attack surface
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Видео How to Find an AWS SSM Backdoor | CloudFoxable Bastion Host CTF канала CyberSecurityTV