Pacu is an open-source AWS exploitation framework developed by Rhino Security Labs for offensive security testing against cloud environments. The framework enables penetration testers to identify and exploit configuration flaws within AWS accounts through a modular architecture that allows for easy expansion of functionality. Current modules support various attack vectors including: - User privilege escalation - IAM user backdooring - Vulnerable Lambda function exploitation - Additional AWS-specific attack scenarios The tool requires Python 3.7+ and pip3 for installation, making it a lightweight solution for cloud penetration testing activities. Pacu focuses specifically on AWS environments and provides a structured approach to testing cloud security configurations and identifying potential vulnerabilities in AWS deployments.