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NTLM APS python version 0.98

Hi ,

I am working on NTLM (Windows NT Lan Manager )APS
(Authentication Proxy Server ) , to port to C language .

I am using ethereal to monitor the packets sent between client and
server . NTLM is a MS proprietary protocol designed so that will allow
authentication only from MS browsers .

This proprietary was cracked and code was written in python by
Rozmanov .

The link to the source pool about NTLM is


Have any one worked extensively with NTLM APS python package
0.98 ?

NTLM APS have a 6 step process :- (C) - client (S)- server

1: C --S GET ...

2: C <-- S 401 Unauthorized
WWW-Authenticate: NTLM

3: C --S GET ...
Authorization: NTLM <base64-encoded type-1-message>

4: C <-- S 401 Unauthorized
WWW-Authenticate: NTLM <base64-encoded type-2-

5: C --S GET ...
Authorization: NTLM <base64-encoded type-3-message>

6: C <-- S 200 Ok
After step 6 client must connect to server . But when i run NTLM
APS and watch the packets sent b/w client and server in ethereal , i
see that client does not recieve 200 Ok at Step 6 , but receives 401
Unauthorized . After this i get a dialog box which requests me to
enter my user name and password .

I enter the credentials and then the server authorizes the
client .

I am sorry that i cannot give more info on this . I can send the
saved page log from ethereal . That will give a very good idea .

As per theory , it is only a 6 step process . I am puzzled
regarding this .

thanks ,


Jul 20 '07 #1
1 2606
pycraze wrote:
Hi ,

I am working on NTLM (Windows NT Lan Manager )APS
(Authentication Proxy Server ) , to port to C language .
the 'wget' utility supports NTLM authentication as of version 1.1.0 or so, you might try just looking at the C source code to wget if you're looking to implement an NTLM client in C (I think that's what you were asking?).

Jul 21 '07 #2

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