Aktivieren von Angriffsunterbrechungsaktionen in AWS mit Microsoft Sentinel (Vorschau)

Das folgende Bash-Skript automatisiert die Konfiguration des AWS-OIDC-Anbieters und die Erstellung der IAM-Rolle für die Microsoft-Sentinel-Integration. Stellen Sie vor der Ausführung sicher, dass die AWS CLI installiert und mit einem Konto authentifiziert wird, das über ADMINISTRATORberechtigungen für IAM verfügt. Speichern Sie den Codeausschnitt als Bash-Datei, und führen Sie ihn aus.

#!/bin/bash
# AWS Sentinel OIDC Setup Script
# Configures IAM roles and policies for Microsoft Sentinel integration

set -e  # Exit on error

# Color codes for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
CYAN='\033[0;36m'
NC='\033[0m' # No Color

ms_federated_endpoint="sts.windows.net/33e01921-4d64-4f8c-a055-5bdaffd5e33d"
actions_audience="api://b7c1e142-0933-4310-ba00-8b28878bfece"
role_name="OIDC_Actions_Sentinel"
policy_name="SentinelActionsPolicy"

# Verify AWS credentials are configured
echo -e "${CYAN}Verifying AWS credentials...${NC}"
if ! account_id=$(aws sts get-caller-identity --query Account --output text 2>&1); then
    echo -e "\n${RED}ERROR: AWS credentials not configured or invalid${NC}"
    echo -e "${RED}Details: $account_id${NC}"
    echo -e "\n${YELLOW}Please authenticate using one of these methods:${NC}"
    echo -e "${YELLOW}  1. Run 'aws configure' to set up credentials${NC}"
    echo -e "${YELLOW}  2. Set AWS environment variables (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY)${NC}"
    echo -e "${YELLOW}  3. Use 'aws sso login --profile <profile-name>' for SSO${NC}"
    exit 1
fi
echo -e "${GREEN}✓ AWS authenticated (Account: $account_id)${NC}"
trust_policy_document=$(cat << EOM
{
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": {
                "Federated": "arn:aws:iam::$account_id:oidc-provider/$ms_federated_endpoint/"
            },
            "Action": "sts:AssumeRoleWithWebIdentity",
            "Condition": {
                "StringEquals": {
                    "$ms_federated_endpoint/:aud": "$actions_audience",
                    "sts:RoleSessionName": "MicrosoftSentinel_$account_id"
                }
            }
        }
    ]
}
EOM
)
permissions_policy_document=$(cat << EOM
{
  "Statement": [
    {
      "Sid": "SentinelActionsPermissions",
      "Effect": "Allow",
      "Action": [
        "iam:GetUserPolicy",
        "iam:DeleteRolePolicy",
        "iam:PutUserPolicy",
        "iam:AttachUserPolicy",
        "iam:ListUserPolicies",
        "iam:PutRolePolicy",
        "iam:GetUser",
        "iam:DetachUserPolicy",
        "iam:GetRolePolicy",
        "iam:DeleteUserPolicy",
        "s3:PutBucketPublicAccessBlock"
      ],
      "Resource": "*"
    }
  ]
}
EOM
)

aws iam add-client-id-to-open-id-connect-provider --open-id-connect-provider-arn arn:aws:iam::$account_id:oidc-provider/$ms_federated_endpoint/ --client-id $actions_audience
aws iam create-role --role-name $role_name --assume-role-policy-document "$trust_policy_document" || aws iam update-assume-role-policy --role-name $role_name --policy-document "$trust_policy_document"
aws iam put-role-policy --role-name $role_name --policy-name $policy_name --policy-document "$permissions_policy_document"

Das folgende PowerShell-Skript ist das Windows Äquivalent des Bash-Setupskripts. Es automatisiert dieselbe AWS-OIDC-Anbieterkonfiguration und die Erstellung der IAM-Rolle für die Microsoft-Sentinel-Integration. Stellen Sie sicher, dass die AWS CLI installiert und authentifiziert wird, bevor Sie sie ausführen.

# AWS Sentinel OIDC Setup Script
# Configures IAM roles and policies for Microsoft Sentinel integration

$ErrorActionPreference = 'Stop'

$ms_federated_endpoint = "sts.windows.net/33e01921-4d64-4f8c-a055-5bdaffd5e33d"
$actions_audience = "api://b7c1e142-0933-4310-ba00-8b28878bfece"
$role_name = "OIDC_Actions_Sentinel"
$policy_name = "SentinelActionsPolicy"

# Verify AWS credentials are configured
Write-Host "Verifying AWS credentials..." -ForegroundColor Cyan
try {
    $account_id = aws sts get-caller-identity --query Account --output text 2>&1
    if ($LASTEXITCODE -ne 0) { 
        throw "AWS credentials not configured or invalid. Output: $account_id" 
    }
    Write-Host "✓ AWS authenticated (Account: $account_id)" -ForegroundColor Green
} catch {
    Write-Host "`nERROR: AWS credentials not configured or invalid" -ForegroundColor Red
    Write-Host "Details: $($_.Exception.Message)" -ForegroundColor Red
    Write-Host "`nPlease authenticate using one of these methods:" -ForegroundColor Yellow
    Write-Host "  1. Run 'aws configure' to set up credentials" -ForegroundColor Yellow
    Write-Host "  2. Set AWS environment variables (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY)" -ForegroundColor Yellow
    Write-Host "  3. Use 'aws sso login --profile <profile-name>' for SSO" -ForegroundColor Yellow
    exit 1
}

# Define trust policy document
$trust_policy_document = @"
{
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": {
                "Federated": "arn:aws:iam::$account_id:oidc-provider/$ms_federated_endpoint/"
            },
            "Action": "sts:AssumeRoleWithWebIdentity",
            "Condition": {
                "StringEquals": {
                    "$ms_federated_endpoint/:aud": "$actions_audience",
                    "sts:RoleSessionName": "MicrosoftSentinel_$account_id"
                }
            }
        }
    ]
}
"@

# Define permissions policy document
$permissions_policy_document = @"
{
  "Statement": [
    {
      "Sid": "SentinelActionsPermissions",
      "Effect": "Allow",
      "Action": [
        "iam:GetUserPolicy",
        "iam:DeleteRolePolicy",
        "iam:PutUserPolicy",
        "iam:AttachUserPolicy",
        "iam:ListUserPolicies",
        "iam:PutRolePolicy",
        "iam:GetUser",
        "iam:DetachUserPolicy",
        "iam:GetRolePolicy",
        "iam:DeleteUserPolicy",
        "s3:PutBucketPublicAccessBlock"
      ],
      "Resource": "*"
    }
  ]
}
"@

# Add client ID to OpenID Connect provider
Write-Host "`nAdding client ID to OIDC provider..." -ForegroundColor Cyan
try {
    $output = aws iam add-client-id-to-open-id-connect-provider `
        --open-id-connect-provider-arn "arn:aws:iam::$account_id:oidc-provider/$ms_federated_endpoint/" `
        --client-id $actions_audience 2>&1
    if ($LASTEXITCODE -ne 0) { throw $output }
    Write-Host "✓ Client ID added successfully" -ForegroundColor Green
} catch {
    Write-Host "ERROR: Failed to add client ID to OIDC provider" -ForegroundColor Red
    Write-Host "Details: $($_.Exception.Message)" -ForegroundColor Red
    exit 1
}

# Create or update IAM role
Write-Host "`nCreating/updating IAM role..." -ForegroundColor Cyan
try {
    $output = aws iam create-role `
        --role-name $role_name `
        --assume-role-policy-document $trust_policy_document 2>&1
    if ($LASTEXITCODE -eq 0) {
        Write-Host "✓ Role created successfully" -ForegroundColor Green
    } else {
        throw $output
    }
} catch {
    if ($_.Exception.Message -like "*EntityAlreadyExists*") {
        Write-Host "Role already exists, updating assume role policy..." -ForegroundColor Yellow
        try {
            $output = aws iam update-assume-role-policy `
                --role-name $role_name `
                --policy-document $trust_policy_document 2>&1
            if ($LASTEXITCODE -ne 0) { throw $output }
            Write-Host "✓ Assume role policy updated" -ForegroundColor Green
        } catch {
            Write-Host "ERROR: Failed to update assume role policy" -ForegroundColor Red
            Write-Host "Details: $($_.Exception.Message)" -ForegroundColor Red
            exit 1
        }
    } else {
        Write-Host "ERROR: Failed to create IAM role" -ForegroundColor Red
        Write-Host "Details: $($_.Exception.Message)" -ForegroundColor Red
        exit 1
    }
}

# Attach inline policy to role
Write-Host "`nAttaching policy to role..." -ForegroundColor Cyan
try {
    $output = aws iam put-role-policy `
        --role-name $role_name `
        --policy-name $policy_name `
        --policy-document $permissions_policy_document 2>&1
    if ($LASTEXITCODE -ne 0) { throw $output }
    Write-Host "✓ Policy attached successfully" -ForegroundColor Green
} catch {
    Write-Host "ERROR: Failed to attach policy to role" -ForegroundColor Red
    Write-Host "Details: $($_.Exception.Message)" -ForegroundColor Red
    exit 1
}

Write-Host "`n========================================" -ForegroundColor Green
Write-Host "Setup completed successfully!" -ForegroundColor Green
Write-Host "========================================" -ForegroundColor Green
Write-Host "Role ARN: arn:aws:iam::$account_id:role/$role_name" -ForegroundColor Cyan