Is there a way to access azure key vault without using AD authentication? - powershell

I want to access the secrets in my azure key vault using my azure credentials without using Azure AD App authentication. Is there a possible way?
Thanks

You will need the serviceprincipal name to decry-pt the key. Hence the answer is unfortunately NO.

We can do it using Azure PowerShell script in C# code. For this we would require only the name of the keyvault, name of secret and Azure credentials of the user who wants to access it.
static void Main(string[] args)
{
Program program = new Program();
string scriptText = "Login-AzureRmAccount";
string result = program.RunScript(scriptText);
Console.WriteLine(result);
Console.ReadLine();
}
private string RunScript(string scriptText)
{
Runspace runspace = RunspaceFactory.CreateRunspace();
runspace.Open();
Pipeline pipeline = runspace.CreatePipeline();
pipeline.Commands.AddScript(scriptText);
pipeline.Commands.AddScript("$secret = Get-AzureKeyVaultSecret -VaultName '[Name_of_keyVault]' -Name '[Name_of_secret]'");
pipeline.Commands.AddScript("Write $secret.SecretValueText");
Collection<PSObject> results = pipeline.Invoke();
runspace.Close();
StringBuilder stringBuilder = new StringBuilder();
foreach (PSObject obj in results)
{
stringBuilder.AppendLine(obj.ToString());
}
return stringBuilder.ToString();
}
Actually, i wanted to access key vault without AD application authentication. This was the only way i could think of.

Related

What is the right way to authenticate Azure Function against Azure DevOps REST API?

The goal is to develop an Azure function which should do some changes in Azure DevOps (like update work items, wiki pages etc), being triggered by Azure pipeline service hook.
Can I use function system identity in this case? And how can I give permissions for this identity to call DevOps REST APIs?
I'm not sure if this is the best way but you can create PAT token. Since you will use it for Azure Function I woudl recommend to use Azure KeyVault to store that token.
Here you have the example how you can use it to fetch projects from Azure DevOps:
public static async void GetProjects()
{
try
{
var personalaccesstoken = "PAT_FROM_WEBSITE";
using (HttpClient client = new HttpClient())
{
client.DefaultRequestHeaders.Accept.Add(
new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic",
Convert.ToBase64String(
System.Text.ASCIIEncoding.ASCII.GetBytes(
string.Format("{0}:{1}", "", personalaccesstoken))));
using (HttpResponseMessage response = await client.GetAsync(
"https://dev.azure.com/{organization}/_apis/projects"))
{
response.EnsureSuccessStatusCode();
string responseBody = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseBody);
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
Here you have documentation for updating work items. I tested that with Postman, but I was able to edit work item using PAT.

C# .NET Framework 4.7.2 in VS 2019 - keep out my clientID and client secret / gitignore / Key Vault

I am a new to #C, therefore excuse my question, which will be probably very easy to you. I am trying to get my clientID, clientSecret and tenantID out of the main source control, but I am not sure at all how to do that. I have seen some methods for .NET Core with Connected Services in Visual Studio, but this is not really available for .NET Framework 4.7.2. I am not confident in setting the config file neither. I have created a resource group on Azure Portal, but I am not sure how to get this key vault working.
The code below represents a working code acquiring a token, the issue I have is to hide those hardcoded strings.
Many thanks for your answer
private static string GetToken()
{
string clientID = "xxxad43f-c825-491f-9130-8cc4da1d1111";
string clientSecret = "dRbIT5Wn4#u=55L#fLnYRNuDYrFD#111";
string tenantID = "4ae48b41-0137-4599-8661-fc641fe77111";
var app = ConfidentialClientApplicationBuilder
.Create(clientID)
.WithClientSecret(clientSecret)
.WithAuthority(new Uri($"https://login.microsoftonline.com/{tenantID}/oauth2/v2.0/token"))
.Build();
var ApiID = "api://dddd-api";
var scopes = new[] { ApiID + "/.default" };
var result = app.AcquireTokenForClient(scopes).ExecuteAsync().Result;
if (result == null)
throw new Exception("Could not acquire token");
return result.AccessToken;
}
You can set the value as environment variables and use Environment.GetEnvironmentVariable("<variable name>") to get them.
string clientID = Environment.GetEnvironmentVariable("AZURE_CLIENT_ID");
string clientSecret = Environment.GetEnvironmentVariable("AZURE_CLIENT_SECRET");
string tenantID = Environment.GetEnvironmentVariable("AZURE_TENANT_ID");

Does Azure SDK 4 .NET support Azure gov?

Try to get Subscription's operations within Azure Gov, but the default api endpoint for Azure ManagementClient is the global one: https://management.azure.com/,
After I specified the endpoint of azure gov ( https://management.usgovcloudapi.net/) to the ManagementClient's constructor method
e.g var managementClient = new ManagementClient(credentials, new Uri("https://management.usgovcloudapi.net/")
it returns api version missing.. and after I put a api-version as a suffix to the uri, it returns no subscription id found..
any one know it works with azure gov as well?
please anyone or any help.
Does Azure SDK 4 .NET support Azure gov?
Yes, we could use the following SdkContext.AzureCredentialsFactory to choose the Azure environment. The following is the demo code, you could refer to.
var tenantId = "tenant Id";
var secretKey = "secret Key ";
var clientId = "Application Id";
var subscriptionId = "subscription Id";
credentials = SdkContext.AzureCredentialsFactory.FromServicePrincipal(clientId, secretKey, tenantId,AzureEnvironment.AzureUSGovernment);
var resourceManagementClient = new ResourceManagementClient(credentials)
{
SubscriptionId = subscriptionId
};

How do I create an AlertsClient from an Azure Active Directory secret? [duplicate]

My company is looking into reporting on Azure. We only want our customers to give us read only credentials for us to use. I did some research and it looks like Azure Active Directory does just that. So I'm looking to authenticate using a read only Azure Directory Application.
To get me started I was following this blog on using the Management API via Azure Active Directory.
https://msdn.microsoft.com/en-us/library/azure/dn722415.aspx
Aside from the approach show being very unfriendly, it doesn't work =(
I get this error after logging in as a global administrator:
"AADSTS90014: The request body must contain the following parameter: 'client_secret or client_assertion'."
Did some research and found this style of authentication was for native app and NOT web apps (despite what the blog post saying other wise..). So I made a tweak. My GetAuthorizationHeader now looks like this:
private static string GetAuthorizationHeader()
{
AuthenticationResult result = null;
var context = new AuthenticationContext("https://login.windows.net/" + ConfigurationManager.AppSettings["tenantId"]);
string clientId = ConfigurationManager.AppSettings["clientId"];
string clientSecret = ConfigurationManager.AppSettings["clientSecret"];
ClientCredential clientCred = new ClientCredential(clientId, clientSecret);
var thread = new Thread(() =>
{
result = context.AcquireToken(
"https://management.core.windows.net/",
clientCred);
});
thread.SetApartmentState(ApartmentState.STA);
thread.Name = "AquireTokenThread";
thread.Start();
thread.Join();
if (result == null)
{
throw new InvalidOperationException("Failed to obtain the JWT token");
}
string token = result.AccessToken;
return token;
}
I am able to get the Access Token (yay). But now when I try to use this with the Azure Management library client I get this error:
"ForbiddenError: The server failed to authenticate the request. Verify that the certificate is valid and is associated with this subscription."
I double checked my permissions in my application. It looked good. I tried giving full access to everything to see if that would have made a difference.
I double checked my tenantId, clientId, and subscriptionId, all looked good.
I made sure the subscription I'm using is pointed to the AD my application is in.
I tried making a new secret key.
My guess is this is the issue:
However in this UI I am unable to select any values for that property. I'm unsure if this is the result of a bug or an unfinished feature.
Am I missing something here?
Thanks
Here's my full code for reference:
class Program
{
static void Main(string[] args)
{
var token = GetAuthorizationHeader();
var credential = new TokenCloudCredentials(ConfigurationManager.AppSettings["subscriptionId"], token);
using (var computeClient = new ComputeManagementClient(credential))
{
var images = computeClient.VirtualMachineOSImages.List();
}
}
private static string GetAuthorizationHeader()
{
AuthenticationResult result = null;
var context = new AuthenticationContext("https://login.windows.net/" + ConfigurationManager.AppSettings["tenantId"]);
string clientId = ConfigurationManager.AppSettings["clientId"];
string clientSecret = ConfigurationManager.AppSettings["clientSecret"];
ClientCredential clientCred = new ClientCredential(clientId, clientSecret);
var thread = new Thread(() =>
{
result = context.AcquireToken(
"https://management.core.windows.net/",
clientCred);
});
thread.SetApartmentState(ApartmentState.STA);
thread.Name = "AquireTokenThread";
thread.Start();
thread.Join();
if (result == null)
{
throw new InvalidOperationException("Failed to obtain the JWT token");
}
string token = result.AccessToken;
return token;
}
}
EDIT:
Progress has been made. As I discussed with Gaurav, I needed to ditch the Azure Management Library because as of right now it does not seem to support Azure Resource Manager (ARM) API! So instead I did raw web requests. And it works as intended. If I remove role access off my AD Application I get access denied. When I have it I get back data.
One thing I'm not sure about is making it so my application is auto-adding to new resources.
Also, Is there a way to list Resource Groups that are accessible for my AD Application?
New code:
class Program
{
static void Main(string[] args)
{
var token = GetAuthorizationHeader();
string subscriptionId = ConfigurationManager.AppSettings["subscriptionId"];
string resourceGroupName = ConfigurationManager.AppSettings["resourceGroupName"];
var uriListMachines = string.Format("https://management.azure.com/subscriptions/{0}/resourceGroups/{1}/providers/Microsoft.Compute/virtualmachines?api-version=2015-05-01-preview", subscriptionId, resourceGroupName);
var t = WebRequest.Create(uriListMachines);
t.ContentType = "application/json";
t.Headers.Add("Authorization", "Bearer " + token);
var response = (HttpWebResponse)t.GetResponse();
string result = "";
using (var reader = new StreamReader(response.GetResponseStream()))
{
result = reader.ReadToEnd();
}
//Original Attempt:
//var credential = new TokenCloudCredentials(ConfigurationManager.AppSettings["subscriptionId"], token);
//using (var client = CloudContext.Clients.CreateComputeManagementClient(credential))
//{
// var images = client.VirtualMachineVMImages.List();
//}
}
private static string GetAuthorizationHeader()
{
AuthenticationResult result = null;
var context = new AuthenticationContext("https://login.windows.net/" + ConfigurationManager.AppSettings["tenantId"]);
string clientId = ConfigurationManager.AppSettings["clientId"];
string clientSecret = ConfigurationManager.AppSettings["clientSecret"];
ClientCredential clientCred = new ClientCredential(clientId, clientSecret);
var thread = new Thread(() =>
{
result = context.AcquireToken(
"https://management.core.windows.net/",
clientCred);
});
thread.SetApartmentState(ApartmentState.STA);
thread.Name = "AquireTokenThread";
thread.Start();
thread.Join();
if (result == null)
{
throw new InvalidOperationException("Failed to obtain the JWT token");
}
string token = result.AccessToken;
return token;
}
}
EDIT EDIT:
I figured out my hung up. Resources created in the OLD portal will get it's own distinct resource group.
From what I can tell you can not add a resource made in the old portal existing resource group (boooo). Resources created in the new portal will be able to assign the resource to an existing group (aka one that gives a role access to my AD Application).
This is such a mess! But at least I know what is going on now.
I believe you're on the right track as to why you're running into this problem.
Here's what's happening:
Essentially permission to execute Service Management API is a delegated permission and not an application permission. In other words, the API is executed in context of the user for which the token is acquired. Now you are getting this token for your application (specified by client id/secret). However your application doesn't have access to your Azure Subscription because the user record created for this application in your Azure AD is of type Service Principal. Since this Service Principal doesn't have access to your Azure Subscription, you're getting this Forbidden Error (I must say that the error is misleading because you're not using certificate at all).
There are a few things you could do:
Switch to Azure Resource Manager (ARM) API - ARM API is the next generation of Service Management API (SM API) and Azure is moving towards this direction only. It exclusively works off of Azure AD token. If possible, make use of that to manage your Azure resources (though you need to keep in mind that as of today not all Azure resources can be managed through ARM API). They way you do it is take your Service Principal and assign it to a particular role using new Azure Portal. Please see this link for more details on this: https://azure.microsoft.com/en-in/documentation/articles/resource-group-create-service-principal-portal/.
Use X509 Certificate - You can always use X509 Certificate based authorization to authorize your SM API requests. Please see this link for more details on that: https://msdn.microsoft.com/en-us/library/azure/ee460782.aspx#bk_cert. The downside of this approach is that the application (or whosoever has access to this certificate) will get full access to your Azure Subscription and can do everything there (including deleting resources).
Acquire token for a user instead of an application - This is another approach you can take. Essentially ask your users to login into Azure AD through your console application and acquire token for that user. Again, please keep in mind that this user must be a Co-Admin in your Azure Subscription and will have full access to your Azure Subscription as with SM API there's no concept of Role-based access control.

How can I check if a powershell script is signed from the managed API?

I want to execute a powershell using the .net Powershell SDK. I have this working fine.
Before I execute it I want to check that the script has been signed by my code signing certificate - this is easy enough to do from within powershell itself using Get-AuthenticodeSignature but I would like to do this in code before choosing to execute this script.
Solution:
Runspace runSpace = RunspaceFactory.CreateRunspace();
runSpace.Open();
Pipeline shell = runSpace.CreatePipeline();
shell.Commands.AddScript(String.Format("Get-AuthenticodeSignature '{0}'", Filename));
Signature sig = (shell.Invoke()[0]).BaseObject as Signature;
bool isValid = sig.Status == SignatureStatus.Valid;
The easiest way I can think is to still use powershell, but from within managed code:
using System.Management.Automation;
void Foo(string path) {
PowerShell shell = PowerShell.Create();
shell.AddScript(String.Format("Get-AuthenticodeSignature {0}", path));
Signature sig = shell.Invoke()[0] as Signature; // returns collection
bool isValid = sig.Valid;
}
(from memory, so may not be entirely syntactically correct)