httpntlm is a Node.js library to do HTTP NTLM authentication

It's a port from the Python libary python-ntml with added NTLMv2 support.

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Last update: March 2023

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You can install httpntlm using the Node Package Manager (npm):

npm install httpntlm

var httpntlm = require('httpntlm');

httpntlm.get({
  url: "https://someurl.com",
  username: 'm$',
  password: 'stinks',
  workstation: 'choose.something',
  domain: ''
}, function (err, res){
  if(err) return console.log(err);

  console.log(res.headers);
  console.log(res.body);
});

• url: {String} URL to connect. (Required)
• username: {String} Username (optional, default: '')
• password: {String} Password (optional, default: '')
• workstation: {String} Name of workstation (optional, default: '')
• domain: {String} Name of domain (optional, default: '')
• agent: {Agent} In case you want to reuse the keepaliveAgent over different calls (optional)
• headers: {Object} Add in custom headers. The following headers are used by NTLM and cannot be passed: Connection, Authorization (optional)

if you already got the encrypted password,you should use this two param to replace the 'password' param.

• lm_password {Buffer} encrypted lm password.(Required)
• nt_password {Buffer} encrypted nt password. (Required)

You can also pass along all other options of httpreq, including custom headers, cookies, body data, ... and use POST, PUT or DELETE instead of GET.

When NTLMv2 extended security and target information can be negotiated with the server, this library assumes the server supports NTLMv2 and creates responses according to the NTLMv2 specification (the actually supported NTLM version cannot be negotiated). Otherwise, NTLMv1 or NTLMv1 with NTLMv2 extended security will be used.

var httpntlm = require('httpntlm');
var ntlm = httpntlm.ntlm;
var lm = ntlm.create_LM_hashed_password('Azx123456');
var nt = ntlm.create_NT_hashed_password('Azx123456');


httpntlm.get({
  url: "https://someurl.com",
  username: 'm$',
  lm_password: lm,
  nt_password: nt,
  workstation: 'choose.something',
  domain: ''
}, function (err, res){
  if(err) return console.log(err);

  console.log(res.headers);
  console.log(res.body);
});

If you want to use the NTLM-functions yourself, you can access the ntlm-library like this (https example):

var ntlm = require('httpntlm').ntlm;
var async = require('async');
var httpreq = require('httpreq');
var HttpsAgent = require('agentkeepalive').HttpsAgent;
var keepaliveAgent = new HttpsAgent();

var options = {
  url: "https://someurl.com",
  username: 'm$',
  password: 'stinks',
  workstation: 'choose.something',
  domain: ''
};

async.waterfall([
  function (callback){
    var type1msg = ntlm.createType1Message(options);

    httpreq.get(options.url, {
      headers:{
        'Connection' : 'keep-alive',
        'Authorization': type1msg
      },
      agent: keepaliveAgent
    }, callback);
  },

  function (res, callback){
    if(!res.headers['www-authenticate'])
      return callback(new Error('www-authenticate not found on response of second request'));

    var type2msg = ntlm.parseType2Message(res.headers['www-authenticate']);
    var type3msg = ntlm.createType3Message(type2msg, options);

    setImmediate(function() {
      httpreq.get(options.url, {
        headers:{
          'Connection' : 'Close',
          'Authorization': type3msg
        },
        allowRedirects: false,
        agent: keepaliveAgent
      }, callback);
    });
  }
], function (err, res) {
  if(err) return console.log(err);

  console.log(res.headers);
  console.log(res.body);
});

httpntlm.get({
  url: "https://someurl.com/file.xls",
  username: 'm$',
  password: 'stinks',
  workstation: 'choose.something',
  domain: '',
  binary: true
}, function (err, response) {
  if(err) return console.log(err);
  fs.writeFile("file.xls", response.body, function (err) {
    if(err) return console.log("error writing file");
    console.log("file.xls saved!");
  });
});

httpntlm.get({
  url: "http://localhost:3000",
  username: 'm$',
  password: 'stinks',
  workstation: 'choose.something',
  domain: 'somedomain',
  headers: {
    'User-Agent': 'my-useragent'
  }
}, function (err, res){
  if(err) return console.log(err);

  console.log(res.headers);
  console.log(res.body);
});

You can find more examples on Snyk.

• python-ntlm
• NTLM Authentication Scheme for HTTP
• LM hash on Wikipedia

Running tests in an open source package is crucial for ensuring the quality and reliability of the codebase. When you submit code changes, it's essential to ensure that these changes don't break existing functionality or introduce new bugs.

Tests are written with Mocha.

To run tests, simply run:

npm test

Note that the integration tests start up a simple express.js server with NTLM support. You might see some extra debugging info from that server when running integration tests.

Copyright (c) Sam Decrock https://github.com/SamDecrock/

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.