Vile: The Purple Ranger

Using Terraform and Ansible to build and configure the overall infrastructure, this repo will be a cyber range for red teams to carry out attacks and for blue teams to counter with detections and mitigations, engaging in a full scope purple team effort. Build your skills to frustrate and break the spirits of your adversaries, making any offense on your infrastructure a truly Vile endeavor for all who dare to cross your threshold.

Table of Contents

• Project Mock Up

  • Wazuh Deployment

  • Lab Topology

• Semantic Versioning

• Common Configuration Errors

• Install the Terraform CLI

• Terraform Basics

• Troubleshooting

Project Mock Up

Wazuh Deployment

Lab Topology

Semantic Versioning

This project is going to utilize the semantic versioning for its tagging.

semver.org

The general format:

MAJOR.MINOR.PATCH, eg 1.0.1

• MAJOR version when you make incompatible API changes
• MINOR version when you add functionality in a backward compatible manner
• PATCH version when you make backward compatible bug fixes Additional labels for pre-release and build metadata are available as extensions to the MAJOR.MINOR.PATCH format.

Common Configuration Errors

Problem 1: "Wazuh dashboard is not ready yet"

Execute the below command on the Wazuh Indexer

cat /var/log/wazuh-indexer/wazuh-cluster.log | grep -i -E "error|warn"

Execute command on the Wazuh Dashboard

cat /usr/share/wazuh-dashboard/data/wazuh/logs/wazuhapp.log | grep -i -E "error|warn"

The first error indicates an authentication issue with the kibanaserver user. The second shows there is a connection error on the dashboard.

Solution

Consult the following password management documentation to fix the issue. Follow step 3 of "Changing the passwords in a distributed environment"

Install the Terraform CLI

Considerations with the Terraform CLI changes

The Terraform CLI installation instructions have changed due to gpg keyring changes. So we needed to refer to the latest install CLI instructions via Terraform Documentation and change the scripting for install.

Install the Terraform CLI

Considerations for Linux Distribution

This project is built against Ubuntu. Please consider verifying your Linux Distribution and change according to your distribution needs

How to Check OS Version in Linux

Example of checking OS version:

$ cat /etc/os-release

PRETTY_NAME="Ubuntu 22.04.3 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.3 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy

Terraform Basics

Terraform Registry

Terraform sources their providers and modules from the Terraform registry which is located at registry.terraform.io

• Providers is an interface to APIs that will allow to create resources in terraform
• Modules are a way to make large amount of terraform code modular, portable and sharable

Random Terraform Provider

Terraform Console

We can see a list of all Terraform commands by simply typing terraform

Terraform init

At the start of a new Terraform project we will run terraform init to download the binaries for the terraform providers that we'll use in this project

Terraform Plan

This will generate out a changeset, about the state of our infrastructure and what will be changed.

We can output this changeset ie. "plan" to be passed to an apply, but often you can just ignore outputting.

Terraform Apply

terraform apply

This will run a plan and pass the changeset to be executed by terraform. Apply should prompt yes or no.

Apply the --auto-approve flag to automatically approve a terraform transaction

Terraform Destroy

This will destroy resources. This can use the --auto-approve flag as well

terraform destroy --auto-approve

If you receive an Access Denied message when deleting, verify your permissions, groups and ensure you have the proper group name.

Troubleshooting tips:

• https://saturncloud.io/blog/troubleshooting-s3-error-access-denied-when-calling-the-listbuckets-operation/

Terraform Lock Files

.terraform.lock.hcl contains the locked versioning for the providers or modules that should be used with this project.

The Terraform Lock File should be committed to your Version Control System - i.e GitHub

Terraform State File

.terraform.tfstate contain information about the current state of your infrastructure .

This file should not be committed to your VCS. This file can contain sensitive information. If you lose this file, you will lose the knowledge of your infrastructure.

.terraform.tfstate.backup is the previous state file state.

Terraform Directory

.terraform directory contains binaries of terraform providers

Troubleshooting

1. Tailscale command not recognized on Macbook M2 Create a temp alias for tailscale

alias tailscale /Applications/Tailscale.app/Contents/MacOS/Tailscale

2. Error: Error deleting SSH key: DELETE https://api.digitalocean.com/v2/account/keys/BLAH

This error came up while attempting to create the SSH key and store it in DigitalOcean. I deleted "HackeOps" and "Dev SSH Key" and ran the below command without issue.

terraform apply -auto-approve -var "do_token=${DO_PAT}"

Also, verify the name in the CLOUD_SERVICE_PROVIDER_NAME_ssh_key resource, verify the name of the key is the same SSH key name you provided when uploading your SSH key.

Code

DigitalOcean