AWS Penetration Testing and Cloud Red Teaming

Posted by: Vikas Dubey Date: 11 May 2026

Introduction

The rapid adoption of cloud platforms such as Amazon Web Services (AWS) has transformed how organisations build, scale and operate their digital infrastructure. While this shift enables agility and innovation, it also introduces a new set of security challenges.

Unlike traditional on‑premise environments, AWS is highly dynamic, API‑driven and identity‑centric. These characteristics expand the attack surface and make cloud environments an attractive target for threat actors. Today, most cloud security incidents are not caused by sophisticated zero‑day exploits, but by misconfigurations, excessive permissions and exposed credentials.

This is where cloud penetration testing plays a critical role. When combined with red teaming, AWS penetration testing simulates real‑world attack techniques to uncover hidden attack paths before they are exploited.

From Perimeter Security to Identity‑Driven Attacks

In traditional environments, attackers focused on breaching network perimeters. In AWS, the attack focus has shifted towards:

Identity and Access Management (IAM)
Service misconfigurations
Trust relationships between services and accounts

This evolution requires a new approach. Red Team‑driven cloud penetration testing mirrors how real attackers operate across the cloud kill chain, identifying weaknesses across identity, configuration and monitoring layers.

Understanding AWS Architecture and Security

Before performing AWS penetration testing, it is essential to understand how AWS architecture influences security. AWS provides a broad portfolio of services across compute, storage, networking and identity management. While this flexibility is powerful, it also increases complexity and the likelihood of configuration errors.

The AWS Shared Responsibility Model

AWS security is governed by a shared responsibility model:

AWS Secures	Customer Secures
Infrastructure	IAM policies
Hardware	Applications
Net working	Data & configurations

A major misconception is that AWS secures everything. Misconfigurations on the customer side are the leading cause of security incidents.

Why AWS Environments Are Prime Targets

AWS environments often host critical business data, credentials and infrastructure access within a single ecosystem, making them highly attractive to attackers.

Common Risk Factors

Misconfigurations
- Public S3 buckets exposing sensitive data
- Security groups open to 0.0.0.0/0
- Weak access controls
Over‑Permissive IAM
- Wildcard permissions (*:*)
- Lack of role separation
Credential Exposure
- Hard‑coded access keys in code repositories
- Secrets leaked through CI/CD pipelines
Expanding Attack Surface
- Multiple interconnected services
- Cross‑account trust relationships
Weak Monitoring
- Disabled or misconfigured CloudTrail
- Lack of alerting and log analysis

Attackers frequently chain together small weaknesses to achieve full cloud compromise.

AWS Pentesting Methodology

Effective AWS penetration testing combines attacker simulation with a structured cloud VAPT methodology. This approach assesses security across every phase of the cloud kill chain.

AWS Methodology

Reconnaissance and Enumeration
The objective of this phase is to map AWS resources, permissions and exposure points without triggering alerts.
- Enumerate IAM users, roles, groups and policies
- Identify public EC2 instances, S3 buckets and APIs
- Analyse permissions using AWS CLI and tools such as ScoutSuite and Prowler
Initial Access
Initial access is typically gained through exposed credentials rather than software vulnerabilities.
- Use leaked AWS credentials from repositories or configuration files
- Exploit SSRF to access instance metadata services (IMDS)
- Target publicly accessible services with weak authentication
Privilege Escalation
Once access is obtained, attackers attempt to elevate privileges. In AWS, this often leads to full account compromise.
- Abuse misconfigured IAM policies
- Exploit PassRole permissions and trust relationships
- Identify escalation paths using tools such as Pacu or manual analysis
Persistence
Persistence ensures continued access even after the original entry point is removed.
- Create new IAM users or access keys
- Modify trust policies for re‑entry
- Deploy backdoor Lambda functions or scheduled tasks
Lateral Movement
Attackers expand their reach across services and accounts by exploiting trust relationships.
- Assume roles using sts:AssumeRole
- Pivot from EC2 instances to IAM roles and S3 access
- Exploit cross‑account access paths
Defence Evasion
To avoid detection, attackers blend into normal AWS activity.
- Disable or tamper with CloudTrail logs
- Operate in less monitored regions
- Use existing roles instead of creating new ones
Data Exfiltration
The final stage involves extracting sensitive data while minimising detection.
- Download data from S3 buckets
- Extract RDS snapshots and backups
- Access Secrets Manager and Parameter Store

Common Tools Used in AWS Penetration Testing

Tool	Purpose
ScoutSuite	Cloud security posture assessment
Prowler	CIS benchmark checks
Pacu	AWS exploitation framework
CloudMapper	Visualise AWS environments
AWS CLI	Manual testing and validation

These tools support both automated and manual testing during cloud security testing engagements.

Best Practices for Securing AWS Environments

Findings from AWS security assessments should be followed by practical remediation steps.

Identity and Access Management

Enforce least‑privilege access
Enable multi‑factor authentication (MFA)
Rotate access keys regularly

Storage Security

Disable public access to S3 buckets
Enable encryption using AWS KMS
Apply restrictive bucket policies

Compute Security

Enforce IMDSv2
Patch EC2 instances regularly
Restrict inbound traffic

Network Security

Avoid 0.0.0.0/0 exposure
Use private subnets where possible
Enable VPC Flow Logs

Monitoring and Logging

Enable AWS CloudTrail
Use Amazon GuardDuty
Configure alerts and log monitoring

These controls strengthen outcomes from AWS security audits and ongoing cloud security programmes.

Conclusion

Cloud penetration testing is a critical component of modern cloud security strategies. As attackers increasingly target AWS environments, organisations must proactively identify and address weaknesses before they lead to incidents.

By combining:

A structured cloud VAPT methodology
Automated assessment tools
Expert‑led manual testing

By focusing on authentication, privileged access, hybrid identity, and application security, organisations can stay one step ahead of attackers and ensure that identity remains a stronghold, not a liability.

In today’s cloud-driven world, security is not just about protecting systems—it’s about thinking like an attacker to stay ahead of threats.

Need to assess your AWS environment against real‑world attack paths?

TÜV SÜD supports organisations with structured cloud penetration testing and AWS security assessment services to identify misconfigurations, IAM weaknesses and exposed cloud assets before they lead to incidents.

Learn more about our penetration testing services.

AWS Penetration Testing and Red Teaming