AWS Key Hunter is an open source tool designed to automatically crawl public repositories on GitHub for the purpose of identifying exposed AWS access keys.
See also: whoAMI attacks allow access to AWS accounts
The tool, leveraging continuous monitoring and notifications via Discord, aims to reduce the risks arising from unintentional leaks in version control systems.
Security engineer Anmol Singh Yadav explains that AWS Key Hunter implements a multi-layered scanning method, detecting AWS keys in Git commits. The tool can detect both plain text AWS keys (e.g. AWS_ACCESS_KEY_ID=AKIA…) and Base64 encoded, providing a comprehensive analysis solution.
The tool's architecture combines repository analysis with pattern recognition that aligns with AWS's core formatting specifications, ensuring accuracy and efficiency.
Unlike tools like TruffleHog, which rely on entropy and often produce false positives, AWS Key Hunter offers a more reliable approach. It uses regular expression-based structural validation, specifically designed for AWS IAM key patterns. The scanning process is performed through the following workflow:
- Commit Recovery: Periodic API calls to the GitHub event endpoint to monitor repository activity
- Content Analysis: Check file differences using AWS key pattern regex (/^AKIA[0-9A-Z]{16}$/)
- Validation: Programmatically verify keys detected through AWS STS GetCallerIdentity API.
See also: Ransomware encrypts S3 buckets via Amazon AWS
Real-time notification via Discord Webhooks
The tool integrates with webhook API to provide instant notifications via a configured channel. When valid credentials are detected, AWS Key Hunter triggers a POST request containing repository metadata and some key details.
Security teams can customize alert thresholds and implement automated key rotation workflows through AWS Lambda integrations.
Comparative Analysis with Existing Solutions
While GitHub's native secret scan covers AWS keys for verified organizations, AWS-Key-Hunter provides broader coverage for public repositories. The tool overcomes static dorking techniques (filename:credentials aws_access_key_id) through automated commit tracking and reduces false positives compared to entropy-based scanners.
See also: EC2 Grouper abuses AWS tools for attacks
AWS keys, also known as access keys, are critical components for programmatic interaction with Amazon Web Services (AWS). They consist of two parts: an access key identifier and a secret access key. These keys provide access to AWS resources and are often associated with an Identity and Access Management (IAM) user. To maintain security, it is essential to store AWS keys securely and never share or embed them in source code. Employing strategies such as using environment variables, AWS Key Management Service (KMS), or rotating keys regularly can help mitigate the potential risks of unauthorized access.
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Source: cybersecuritynews
