fortra/impacket

Samba secretsdump.py not working

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#991 opened on Nov 11, 2020

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 (15 comments) (0 reactions) (0 assignees)Python (12,244 stars) (3,421 forks)batch import
enhancementhelp wanted

Description

Configuration

impacket version: latest (from git) Target OS: Ubuntu 16.04 Samba Version : 4.3.8

Debug Output With Command String

Password:
[*] Dumping Domain Credentials (domain\uid:rid:lmhash:nthash)
[*] Using the DRSUAPI method to get NTDS.DIT secrets
[-] DRSR SessionError: code: 0x20e4 - ERROR_DS_CANT_FIND_EXPECTED_NC - The naming context could not be found.
[*] Something wen't wrong with the DRSUAPI approach. Try again with -use-vss parameter
[*] Cleaning up... ```

Additional context

Hi,

When trying to secretsdump.py -no-pass -just-dc Domain/'DC_NETBIOS_NAME$'@DC_IP_ADDR into my SAMBA AD DC I face an error message. I Wanted to know if it was related to the implementation of secretdump or If I could have missed something during my samba configuration.

Thanks and have a great week 👍

Contributor guide

Tech stack
python
Domain
securityauthentication
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
5
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
understanding of Active Directorybasic knowledge of Samba AD DCfamiliarity with impacket
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
Investigate the DRSUAPI error code 0x20e4 (ERROR DS CANT FIND EXPECTED NC) in the context of Samba AD DC. Check the secretsdump.py implementation in the impacket repository, specifically the DRSUAPI method. Compare with working configurations of Samba and ensure the correct naming context is being queried. Consider asking the issue author for their Samba configuration and domain structure. Look for any related issues or pull requests that might address this.