Prerequisites

https://aws.amazon.com/blogs/security/enabling-federation-to-aws-using-windows-active-directory-adfs-and-saml-2-0/

Installation

$ pip install git+https://github.com/zined/refresh-aws-token

Future Plans

• move from IdpInitiatedSignOn.aspx and parsing HTML/XML to using WS-TRUST. ADFS exposes that via /adfs/services/trust/mex
• do not repeat saml_provider_* for each profile
• incorporate into awscli

Usage

Get a Ticket Granting Ticket (kinit USERNAME@DOMAIN)

create an awscli profile for the account you want to access in ~/.aws/config

e.g. sso-foo-readonly. Ensure that the configuration values match your ADFS Installation.

saml_provider_relying_party is actually the <option>s value of your signin.aws.amazon.com entry on your IdpInitiatedSignOn.aspx

[profile sso-foo-readonly]
region = eu-central-1
saml_provider = ADFS-HTTP
saml_provider_url = https://adfsurl.example.org/adfs/ls/IdpInitiatedSignOn.aspx
saml_provider_krb_service = HTTP/[email protected]
saml_provider_relying_party = aaaaaaaa-1111-bbbb-2222-cccccccccccc
saml_role = arn:aws:iam::12345678901:saml-provider/ADFS,arn:aws:iam::12345678901:role/ADFS-ReadOnly

now refresh your tokens:

$ AWS_PROFILE=sso-foo-readonly aws sts get-caller-identity
Unable to locate credentials. You can configure credentials by running "aws configure".
$
$ refresh-aws-token --profile=sso-foo-readonly
$
$ AWS_PROFILE=sso-foo-readonly aws sts get-caller-identity
{
"Account": "12345678901",
"UserId": "AAAAAAAAAAAAAAAAAAAAA:[email protected]",
"Arn": "arn:aws:sts::12345678901:assumed-role/ADFS-ReadOnly/[email protected]"
}
$