S3cret Scanner: Hunting For Secrets Uploaded To Public S3 Buckets

by do son · November 23, 2022

S3cret Scanner: Hunting For Secrets Uploaded To Public S3 Buckets

S3cret Scanner tool is designed to provide a complementary layer for the Amazon S3 Security Best Practices by proactively hunting secrets in public S3 buckets.
Can be executed as a scheduled task or On-Demand

Automation workflow

The automation will perform the following actions:

List the public buckets in the account (Set with ACL of Public or objects can be public)
List the textual or sensitive files (i.e. .p12, .pgp and more)
Download, scan (using truffleHog3), and delete the files from the disk, once done evaluating, one by one.
The logs will be created in the logger.log file.

Installation

Prerequisites

Python 3.6 or above
TruffleHog3 installed in $PATH

An AWS role with the following permissions:

{

    "Version": "2012-10-17",

    "Statement": [

        {

            "Sid": "VisualEditor0",

            "Effect": "Allow",

            "Action": [

                "s3:GetLifecycleConfiguration",

                "s3:GetBucketTagging",

                "s3:ListBucket",

                "s3:GetAccelerateConfiguration",

                "s3:GetBucketPolicy",

                "s3:GetBucketPublicAccessBlock",

                "s3:GetBucketPolicyStatus",

                "s3:GetBucketAcl",

                "s3:GetBucketLocation"

            ],

            "Resource": "arn:aws:s3:::*"

        },

    ]

}

If you’re using a CSV file – make sure to place the file accounts.csv in the csv directory, in the following format:
```
Account name,Account id

prod,123456789

ci,321654987

dev,148739578
```