Automatic NTLM with python on Windows

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smtplib ntlm
python requests

How can I use automatic NTLM authentication from python on Windows?

I want to be able to access the TFS REST API from windows without hardcoding my password, the same as I do from the web browser (firefox's network.automatic-ntlm-auth.trusted-uris, for example).

I found this answer which works great for me because:

  1. I'm only going to run it from Windows, so portability isn't a problem
  2. The response is a simple json document, so no need to store an open session

It's using the WinHTTP.WinHTTPRequest.5.1 COM object to handle authentication natively:

import win32com.client
URL = 'http://bigcorp/tfs/page.aspx'    
COM_OBJ = win32com.client.Dispatch('WinHTTP.WinHTTPRequest.5.1')
COM_OBJ.SetAutoLogonPolicy(0)
COM_OBJ.Open('GET', URL, False)
COM_OBJ.Send()
print(COM_OBJ.ResponseText)

ntlm-auth · PyPI, Creates NTLM authentication structures. python setup.py install Automatically get windows version if running on windows, use default if not that case; Add  Python library that provides NTLM support, including an authentication handler for urllib2. This library allows you to retrieve content from (usually corporate) servers protected with windows authentication (NTLM) using the python urllib2. Python 3 Support. There is work going on to port the library to python 3, you can find it in the python30 directory.

You can do that with https://github.com/requests/requests-kerberos. Under the hood it's using https://github.com/mongodb-labs/winkerberos. The latter is marked as Beta, I'm not sure how stable it is. But I have requests-kerberos in use for a while without any issue.

Maybe a more stable solution would be https://github.com/brandond/requests-negotiate-sspi, which is using pywin32's SSPI implementation.

mullender/python-ntlm: Automatically exported from code , This library allows you to retrieve content from (usually corporate) servers protected with windows authentication (NTLM) using the python urllib2. You just need to whitelist the domain names you need to allow automatic authentication to, and let windows save your credentials. IE (and Chrome) Internet Explorer supports Integrated Windows Authentication (IWA) out-of-the-box, but may need additional configuration due to the network or domain environment.

NTLM credentials are based on data obtained during the interactive logon process, and include a one-way hash of the password. You have to provide the credential.

Python has requests_ntlm library that allows for HTTP NTLM authentication.

You can reference this article to access the TFS REST API : Python Script to Access Team Foundation Server (TFS) Rest API

If you are using TFS 2017 or VSTS, you can try to use Personal Access Token in a Basic Auth HTTP Header along with your REST request.

mullender/python-ntlm, I want to make a request using NTLM authentication with the d-windows-​authentication-ntlm-using-python --- snip --- import urllib2 from auto-migrated Type-Defect Usability OpSys-Windows Security labels on Apr 7, 2015. The issue is that Python support from what I've seen is quite poor when it comes to supporting NTLM authentication. This causes our corporate proxy server to always return HTTP code 407. My initial idea was to set up a local proxy server using IIS and the Application Request Routing module, which would forward all requests to our corporate

Using Python with Integrated Windows Authentica, I have to give it a user/pass, which means I need to either enter that every time it runs (can't be automated) or store it somewhere in a file on my  It is primarily designed to run on Windows systems and authenticates on behalf of the application using the currently logged in Windows user account. Px is similar to "NTLM Authorization Proxy Server" NTLMAPS and Cntlm in that it sits between the corporate proxy and applications and offloads authentication. The advantage is that Px is able to use the currently logged in user's credentials automatically without requiring any user supplied credentials.

SQLMAP – Authenticate via NTLM under Windows, Automatic recognition of password hash formats and support for To run sqlmap under Windows with NTLM authentication, we need to install python-ntlm first. python sqlmap.py -u https://URL –auth-type NTLM –auth-cred  Go to your Start menu (lower left Windows icon), type "Microsoft Store", select the link to open the store. Once the store is open, select Search from the upper-right menu and enter "Python". Open "Python 3.7" from the results under Apps.

Python - winrm ntlm auth, Check out my video for NTLM authentication with python and the pywinrm module. This is a Duration: 7:05 Posted: Nov 19, 2019 Python has requests_ntlm library that allows for HTTP NTLM authentication. You can reference this article to access the TFS REST API : Python Script to Access Team Foundation Server (TFS) Rest API. If you are using TFS 2017 or VSTS, you can try to use Personal Access Token in a Basic Auth HTTP Header along with your REST request.

Comments
  • Thanks @Andy-MSFT, but the example you gave has the username and password hardcoded, which is what I'm trying to avoid.
  • @liorda NTLM credentials are based on data obtained during the interactive logon process, and include a one-way hash of the password. You have to provide the credential.
  • So how can Firefox authenticate itself when accessing the TFS webpage? I have never explicitly log in or supplied my password.
  • also stackoverflow.com/questions/32479243/…
  • It should certainly be possible, I think you would start by calling AcquireCredentialsHandle. Firefox is open source so you could look and see what they've done. Doing this from Python is liable to be awkward, though, unless someone has already built a solution for you.