Cloud Pentesting

account

A formal relationship with AWS that is associated with all of the following:

  • The owner email address and password

  • The control of resources created under its umbrella

  • Payment for the AWS activity related to those resources

allow

One of two possible outcomes (the other is deny) when an IAM access policy is evaluated. When a user makes a request to AWS, AWS evaluates the request based on all permissions that apply to the user and then returns either allow or deny.

AssumeRolePolicy

A synonym for the Trust policy.

group

A collection of IAM users. You can use IAM groups to simplify specifying and managing permissions for multiple users.

NotAction

An advanced policy element that explicitly matches everything except the specified list of actions.

permission

A statement within a policy that allows or denies access to a particular resource. You can state any permission like this: "A has permission to do B to C." For example, Jane (A) has permission to read messages (B) from John's Amazon SQS queue (C). Whenever Jane sends a request to Amazon SQS to use John's queue, the service checks to see if she has permission. It further checks to see if the request satisfies the conditions John set forth in the permission.

policy

For IAM: A document defining permissions that apply to a user, group, or role; the permissions in turn determine what users can do in AWS. A policy typically allows access to specific actions, and can optionally grant that the actions are allowed for specific resources, like EC2 instances, Amazon S3 buckets, and so on. Policies can also explicitly deny access.

principal

The user, service, or account that receives permissions that are defined in a policy. The principal is A in the statement "A has permission to do B to C."

resource

An entity that users can work within AWS, such as an EC2 instance, an Amazon DynamoDB table, an Amazon S3 bucket, an IAM user, an AWS OpsWorks stack, and so on.

role

A tool for giving temporary access to AWS resources in your AWS account.

Trust policy

An IAM policy that is an inherent part of an IAM role. The trust policy specifies which principals are allowed to use the role. (Synonym for AssumeRolePolicy).

user

A person or application under an account that needs to make API calls to AWS products. Each user has a unique name within the AWS account, and a set of security credentials not shared with other users. These credentials are separate from the AWS account's security credentials. Each user is associated with one and only one AWS account.

versioning

Every object in Amazon S3 has a key and a version ID. Objects with the same key, but different version IDs can be stored in the same bucket. Versioning is enabled at the bucket layer using PUT Bucket versioning.

PACU

Pacu is an open-source AWS exploitation framework, designed for offensive security testing against cloud environments. Created and maintained by Rhino Security Labs, Pacu allows penetration testers to exploit configuration flaws within an AWS account, using modules to easily expand its functionality. Current modules enable a range of attacks, including user privilege escalation, backdooring of IAM users, attacking vulnerable Lambda functions, and much more.

python3 pacu.py
set_keys

Enumerate IAM entities using the iam__enum_users_roles_policies_groups

This is the future of pentesting in my opinion and there is not a lot of courses/material covering this area.

I'll endeavor to add updates when I know more.

CloudEnum

Multi-cloud OSINT tool. Enumerate public resources in AWS, Azure, and Google Cloud.

https://github.com/initstring/cloud_enum

What is Cloud Pen Testing and why is it different?

https://www.youtube.com/watch?v=lOhvIooWzOg&feature=youtu.be

Tools

actions2aws Assume AWS IAM roles from GitHub Actions workflows with no stored secrets. rpCheckup rpCheckup is an AWS resource policy security checkup tool that identifies public, external account access, intra-org account access, and private resources. policy-compliance-scan A GitHub action that scans Azure resources for policy violations.

iamlive Generate basic AWS IAM policies using client-side monitoring of calls made from the AWS CLI or SDKs. iam-role-enumeration Another way to enumerate AWS IAM users/roles without being authenticated to the victim account. cloudlist Cloudlist is a tool for listing Assets (Hostnames, IP Addresses) from multiple Cloud Providers. kctf kCTF is a Kubernetes-based infrastructure for CTF competitions.