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Pipe auditing mixin now ensures named pipes start with a backslash #11860

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merged 8 commits into from May 23, 2019

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commented May 20, 2019

The named_pipes.txt wordlist provided by the metasploit framework contains pipe names that are not prefixed with a backslash. The auxiliary/scanner/smb/pipe_auditor module does not seem to work properly for some Samba protocol versions (namely protocol 3) unless each pipe name is prefixed with a backslash. I updated lib/exploit/smb/client/pipe_auditor.rb to check for the missing backslash and to prepend it if missing.

Verifications

List the steps needed to make sure this thing works

  • Start msfconsole
  • use auxiliary/scanner/smb/pipe_auditor
  • Verify the thing does what it should
    Running with default named_pipes.txt does not work without fix and does with fix
  • Document (nothing to document or no existing documents to add to)

Fixes #9618 and fixes #11870.

NoodleOfDeath NoodleOfDeath

@NoodleOfDeath NoodleOfDeath changed the title smb client now preprends named pipes with missing backslash during ch… smb client now preprends named pipes with missing backslash May 20, 2019

Update lib/msf/core/exploit/smb/client/pipe_auditor.rb
Co-Authored-By: bcoles <bcoles@gmail.com>
@wvu-r7

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commented May 20, 2019

I'm actually really curious why we didn't need this before, so I'll investigate that in a bit, but I intend to land this regardless. Thanks!

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commented May 21, 2019

Can you post your output and Windows version?

It is working for me on master against Windows Server 2008 R2:

msf5 auxiliary(scanner/smb/pipe_auditor) > git status
[*] exec: git status

On branch master
Your branch is up to date with 'upstream/master'.

nothing to commit, working tree clean
msf5 auxiliary(scanner/smb/pipe_auditor) > options

Module options (auxiliary/scanner/smb/pipe_auditor):

   Name         Current Setting                                              Required  Description
   ----         ---------------                                              --------  -----------
   NAMED_PIPES  /rapid7/metasploit-framework/data/wordlists/named_pipes.txt  yes       List of named pipes to check
   RHOSTS       192.168.56.103                                               yes       The target address range or CIDR identifier
   SMBDomain    .                                                            no        The Windows domain to use for authentication
   SMBPass      trustno1!                                                    no        The password for the specified username
   SMBUser      Administrator                                                no        The username to authenticate as
   THREADS      1                                                            yes       The number of concurrent threads

msf5 auxiliary(scanner/smb/pipe_auditor) > cat /rapid7/metasploit-framework/data/wordlists/named_pipes.txt
[*] exec: cat /rapid7/metasploit-framework/data/wordlists/named_pipes.txt

netlogon
lsarpc
samr
browser
atsvc
DAV RPC SERVICE
epmapper
eventlog
InitShutdown
keysvc
lsass
LSM_API_service
ntsvcs
plugplay
protected_storage
router
SapiServerPipeS-1-5-5-0-70123
scerpc
srvsvc
tapsrv
trkwks
W32TIME_ALT
wkssvc
PIPE_EVENTROOT\CIMV2SCM EVENT PROVIDER
db2remotecmd
msf5 auxiliary(scanner/smb/pipe_auditor) > run

[*] 192.168.56.103:445    - Connected to named pipe: netlogon
[*] 192.168.56.103:445    - Connected to named pipe: lsarpc
[*] 192.168.56.103:445    - Connected to named pipe: samr
[-] 192.168.56.103:445    - Inaccessible named pipe: browser - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 192.168.56.103:445    - Connected to named pipe: atsvc
[-] 192.168.56.103:445    - Inaccessible named pipe: DAV RPC SERVICE - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 192.168.56.103:445    - Connected to named pipe: epmapper
[*] 192.168.56.103:445    - Connected to named pipe: eventlog
[*] 192.168.56.103:445    - Connected to named pipe: InitShutdown
[*] 192.168.56.103:445    - Connected to named pipe: keysvc
[*] 192.168.56.103:445    - Connected to named pipe: lsass
[*] 192.168.56.103:445    - Connected to named pipe: LSM_API_service
[*] 192.168.56.103:445    - Connected to named pipe: ntsvcs
[*] 192.168.56.103:445    - Connected to named pipe: plugplay
[*] 192.168.56.103:445    - Connected to named pipe: protected_storage
[-] 192.168.56.103:445    - Inaccessible named pipe: router - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.103:445    - Inaccessible named pipe: SapiServerPipeS-1-5-5-0-70123 - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 192.168.56.103:445    - Connected to named pipe: scerpc
[*] 192.168.56.103:445    - Connected to named pipe: srvsvc
[-] 192.168.56.103:445    - Inaccessible named pipe: tapsrv - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 192.168.56.103:445    - Connected to named pipe: trkwks
[*] 192.168.56.103:445    - Connected to named pipe: W32TIME_ALT
[*] 192.168.56.103:445    - Connected to named pipe: wkssvc
[-] 192.168.56.103:445    - Inaccessible named pipe: PIPE_EVENTROOT\CIMV2SCM EVENT PROVIDER - The server responded with error: STATUS_ACCESS_DENIED (Command=162 WordCount=0)
[-] 192.168.56.103:445    - Inaccessible named pipe: db2remotecmd - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[+] 192.168.56.103:445    - Pipes: \netlogon, \lsarpc, \samr, \atsvc, \epmapper, \eventlog, \InitShutdown, \keysvc, \lsass, \LSM_API_service, \ntsvcs, \plugplay, \protected_storage, \scerpc, \srvsvc, \trkwks, \W32TIME_ALT, \wkssvc
[*] 192.168.56.103:       - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf5 auxiliary(scanner/smb/pipe_auditor) >

Are you sure the target has SMBv1 enabled? I don't think this code was updated to use RubySMB yet, so SMBv2 does not work.

msf5 auxiliary(scanner/smb/pipe_auditor) > set rhosts 192.168.56.101
rhosts => 192.168.56.101
msf5 auxiliary(scanner/smb/pipe_auditor) > run

[*] 192.168.56.101:       - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf5 auxiliary(scanner/smb/pipe_auditor) >
wvu@kharak:~$ nmap -Pn -n -v -p 445 --script smb-protocols 192.168.56.101,103
Starting Nmap 7.70 ( https://nmap.org ) at 2019-05-21 14:30 CDT
NSE: Loaded 1 scripts for scanning.
NSE: Script Pre-scanning.
Initiating NSE at 14:30
Completed NSE at 14:30, 0.00s elapsed
Initiating Connect Scan at 14:30
Scanning 2 hosts [1 port/host]
Discovered open port 445/tcp on 192.168.56.103
Discovered open port 445/tcp on 192.168.56.101
Completed Connect Scan at 14:30, 0.00s elapsed (2 total ports)
NSE: Script scanning 2 hosts.
Initiating NSE at 14:30
Completed NSE at 14:30, 0.05s elapsed
Nmap scan report for 192.168.56.101
Host is up (0.0012s latency).

PORT    STATE SERVICE
445/tcp open  microsoft-ds

Host script results:
| smb-protocols:
|   dialects:
|     2.02
|     2.10
|     3.00
|     3.02
|_    3.11

Nmap scan report for 192.168.56.103
Host is up (0.00042s latency).

PORT    STATE SERVICE
445/tcp open  microsoft-ds

Host script results:
| smb-protocols:
|   dialects:
|     NT LM 0.12 (SMBv1) [dangerous, but default]
|     2.02
|_    2.10

NSE: Script Post-scanning.
Initiating NSE at 14:30
Completed NSE at 14:30, 0.00s elapsed
Read data files from: /usr/local/bin/../share/nmap
Nmap done: 2 IP addresses (2 hosts up) scanned in 0.27 seconds
wvu@kharak:~$

I'm still inclined to land your PR, but if it's broken in the pipe auditing mixin, it could be broken in many other places.

@wvu-r7 wvu-r7 changed the title smb client now preprends named pipes with missing backslash Pipe auditing mixin now ensures named pipes start with a backslash May 21, 2019

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commented May 22, 2019

Master still does not work on my target, but with the fix it does. I have no idea why because I am currently taking the PWK course and still have not rooted the machine (I'm a noob). Below I reproduce both scenarios and include all of the logs (and if it helps I post the complete nmap scan on the target as well). My guess, is the issue is related to the target running Linux.

Without Fix

msf5 > git status
[*] exec: git status

On branch master
Your branch is up to date with 'origin/master'.

nothing to commit, working tree clean
msf5 > use auxiliary/scanner/smb/pipe_auditor
msf5 auxiliary(scanner/smb/pipe_auditor) > options

Module options (auxiliary/scanner/smb/pipe_auditor):

   Name         Current Setting                                                         Required  Description
   ----         ---------------                                                         --------  -----------
   NAMED_PIPES  /root/OneDrive/git/metasploit-framework/data/wordlists/named_pipes.txt  yes       List of named pipes to check
   RHOSTS                                                                               yes       The target address range or CIDR identifier
   SMBDomain    .                                                                       no        The Windows domain to use for authentication
   SMBPass                                                                              no        The password for the specified username
   SMBUser                                                                              no        The username to authenticate as
   THREADS      1                                                                       yes       The number of concurrent threads

msf5 auxiliary(scanner/smb/pipe_auditor) > cat /root/OneDrive/git/metasploit-framework/data/wordlists/named_pipes.txt
[*] exec: cat /root/OneDrive/git/metasploit-framework/data/wordlists/named_pipes.txt

netlogon
lsarpc
samr
browser
atsvc
DAV RPC SERVICE
epmapper
eventlog
InitShutdown
keysvc
lsass
LSM_API_service
ntsvcs
plugplay
protected_storage
router
SapiServerPipeS-1-5-5-0-70123
scerpc
srvsvc
tapsrv
trkwks
W32TIME_ALT
wkssvc
PIPE_EVENTROOT\CIMV2SCM EVENT PROVIDER
db2remotecmd
msf5 auxiliary(scanner/smb/pipe_auditor) > setg RHOSTS 10.11.1.136
RHOSTS => 10.11.1.136
msf5 auxiliary(scanner/smb/pipe_auditor) > setg VERBOSE true
VERBOSE => true
msf5 auxiliary(scanner/smb/pipe_auditor) > run

[-] 10.11.1.136:139       - Inaccessible named pipe: netlogon - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: lsarpc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: samr - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: browser - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: atsvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: DAV RPC SERVICE - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: epmapper - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: eventlog - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: InitShutdown - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: keysvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: lsass - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: LSM_API_service - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: ntsvcs - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: plugplay - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: protected_storage - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: router - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: SapiServerPipeS-1-5-5-0-70123 - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: scerpc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: srvsvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: tapsrv - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: netlogon - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: lsarpc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: samr - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: browser - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: atsvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: DAV RPC SERVICE - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: epmapper - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: eventlog - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: InitShutdown - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: keysvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: lsass - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: LSM_API_service - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: ntsvcs - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: plugplay - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: protected_storage - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: router - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: SapiServerPipeS-1-5-5-0-70123 - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: scerpc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: srvsvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: tapsrv - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: trkwks - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: W32TIME_ALT - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: wkssvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: PIPE_EVENTROOT\CIMV2SCM EVENT PROVIDER - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:445       - Inaccessible named pipe: db2remotecmd - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 10.11.1.136:          - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed

SMBProtocol Nmap Scan of Target (see Complete Nmap Scan)

root@KaliNoodle:~/labs/133# nmap -Pn -n -v -p 445 --script smb-protocols 10.11.1.136
Starting Nmap 7.70 ( https://nmap.org ) at 2019-05-22 13:14 EDT
NSE: Loaded 1 scripts for scanning.
NSE: Script Pre-scanning.
Initiating NSE at 13:14
Completed NSE at 13:14, 0.00s elapsed
Initiating ARP Ping Scan at 13:14
Scanning 10.11.1.136 [1 port]
Completed ARP Ping Scan at 13:14, 0.15s elapsed (1 total hosts)
Initiating SYN Stealth Scan at 13:14
Scanning 10.11.1.136 [1 port]
Discovered open port 445/tcp on 10.11.1.136
Completed SYN Stealth Scan at 13:14, 0.27s elapsed (1 total ports)
NSE: Script scanning 10.11.1.136.
Initiating NSE at 13:14
Completed NSE at 13:14, 3.95s elapsed
Nmap scan report for 10.11.1.136
Host is up (0.12s latency).

PORT    STATE SERVICE
445/tcp open  microsoft-ds
MAC Address: 00:50:56:93:37:2B (VMware)

Host script results:
| smb-protocols: 
|   dialects: 
|_    NT LM 0.12 (SMBv1) [dangerous, but default]

NSE: Script Post-scanning.
Initiating NSE at 13:14
Completed NSE at 13:14, 0.00s elapsed
Read data files from: /usr/bin/../share/nmap
Nmap done: 1 IP address (1 host up) scanned in 4.63 seconds
           Raw packets sent: 2 (72B) | Rcvd: 2 (72B)

With Fix

msf5 auxiliary(scanner/smb/pipe_auditor) > git checkout smb/client/pipe_auditor
[*] exec: git checkout smb/client/pipe_auditor

Switched to branch 'smb/client/pipe_auditor'
Your branch is up to date with 'origin/smb/client/pipe_auditor'.
msf5 auxiliary(scanner/smb/pipe_auditor) > 
[2]+  Stopped                 ./msfconsole
root@KaliNoodle:~/git/metasploit-framework# ./msfconsole
msf5 > use auxiliary/scanner/smb/pipe_auditor
msf5 auxiliary(scanner/smb/pipe_auditor) > setg RHOSTS 10.11.1.136
RHOSTS => 10.11.1.136
msf5 auxiliary(scanner/smb/pipe_auditor) > setg VERBOSE true
VERBOSE => true
msf5 auxiliary(scanner/smb/pipe_auditor) > run

[*] 10.11.1.136:139       - Connected to named pipe: \netlogon
[*] 10.11.1.136:139       - Connected to named pipe: \lsarpc
[*] 10.11.1.136:139       - Connected to named pipe: \samr
[-] 10.11.1.136:139       - Inaccessible named pipe: \browser - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: \atsvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: \DAV RPC SERVICE - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: \epmapper - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 10.11.1.136:139       - Connected to named pipe: \eventlog
[-] 10.11.1.136:139       - Inaccessible named pipe: \InitShutdown - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: \keysvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 10.11.1.136:139       - Connected to named pipe: \lsass
[-] 10.11.1.136:139       - Inaccessible named pipe: \LSM_API_service - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 10.11.1.136:139       - Connected to named pipe: \ntsvcs
[-] 10.11.1.136:139       - Inaccessible named pipe: \plugplay - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: \protected_storage - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: \router - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: \SapiServerPipeS-1-5-5-0-70123 - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: \scerpc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 10.11.1.136:139       - Connected to named pipe: \srvsvc
[-] 10.11.1.136:139       - Inaccessible named pipe: \tapsrv - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: \trkwks - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: \W32TIME_ALT - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 10.11.1.136:139       - Connected to named pipe: \wkssvc
[-] 10.11.1.136:139       - Inaccessible named pipe: \PIPE_EVENTROOT\CIMV2SCM EVENT PROVIDER - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 10.11.1.136:139       - Inaccessible named pipe: \db2remotecmd - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[+] 10.11.1.136:139       - Pipes: \\netlogon, \\lsarpc, \\samr, \\eventlog, \\lsass, \\ntsvcs, \\srvsvc, \\wkssvc
[*] 10.11.1.136:          - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf5 auxiliary(scanner/smb/pipe_auditor) > 

Complete Nmap Scan

root@KaliNoodle:~/labs/133# nmap -vv -A 10.11.1.136
Starting Nmap 7.70 ( https://nmap.org ) at 2019-03-22 12:02 EDT
NSE: Loaded 148 scripts for scanning.
NSE: Script Pre-scanning.
NSE: Starting runlevel 1 (of 2) scan.
Initiating NSE at 12:02
Completed NSE at 12:02, 0.00s elapsed
NSE: Starting runlevel 2 (of 2) scan.
Initiating NSE at 12:02
Completed NSE at 12:02, 0.00s elapsed
Initiating ARP Ping Scan at 12:02
Scanning 10.11.1.136 [1 port]
Completed ARP Ping Scan at 12:02, 0.25s elapsed (1 total hosts)
Initiating Parallel DNS resolution of 1 host. at 12:02
Completed Parallel DNS resolution of 1 host. at 12:02, 0.13s elapsed
Initiating SYN Stealth Scan at 12:02
Scanning 10.11.1.136 [1000 ports]
Discovered open port 22/tcp on 10.11.1.136
Discovered open port 139/tcp on 10.11.1.136
Discovered open port 113/tcp on 10.11.1.136
Discovered open port 445/tcp on 10.11.1.136
Completed SYN Stealth Scan at 12:02, 1.76s elapsed (1000 total ports)
Initiating Service scan at 12:02
Scanning 4 services on 10.11.1.136
Completed Service scan at 12:02, 11.45s elapsed (4 services on 1 host)
Initiating OS detection (try #1) against 10.11.1.136
Retrying OS detection (try #2) against 10.11.1.136
Retrying OS detection (try #3) against 10.11.1.136
Retrying OS detection (try #4) against 10.11.1.136
Retrying OS detection (try #5) against 10.11.1.136
NSE: Script scanning 10.11.1.136.
NSE: Starting runlevel 1 (of 2) scan.
Initiating NSE at 12:02
Completed NSE at 12:02, 4.70s elapsed
NSE: Starting runlevel 2 (of 2) scan.
Initiating NSE at 12:02
Completed NSE at 12:02, 0.00s elapsed
Nmap scan report for 10.11.1.136
Host is up, received arp-response (0.092s latency).
Scanned at 2019-03-22 12:02:18 EDT for 33s
Not shown: 996 closed ports
Reason: 996 resets
PORT    STATE SERVICE     REASON         VERSION
22/tcp  open  ssh         syn-ack ttl 64 OpenSSH 4.3p2 Debian 9 (protocol 2.0)
|_auth-owners: root
| ssh-hostkey: 
|   1024 88:23:98:0d:9d:8a:20:59:35:b8:14:12:14:d5:d0:44 (DSA)
| ssh-dss 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
|   2048 6b:5d:04:71:76:78:56:96:56:92:a8:02:30:73:ee:fa (RSA)
|_ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA10OWcx61a5eqZIopAJGgzTYwysjjNFbLKDEypxIIb80V5O7M5bmNWYvm39VTMYsjUT4yRFF0IV5BhuMUtd4jqsSewJPGh6JWyE0NjuVLIeSxH7cmvn4EtLoSY4GA1CDzRs+0eMCIKYWpGyFRn1bDxRYJQYutVaG7af7dg0fItkgn0JUdpxMSlPXrffcL2CMwufsxCx6iJwmw8TzJYPaREzM69AfRXjoyQmjUVyEKbLpCLq/yYCjSJ2CEENnZCqWEiPhtZwOCwpGl9ZYerQ1PF3xmqKKGisYLxtFeeDVQyyqEM5mOVkBLY9GVHZVkRClkCcI2phrslp4gRKHl6Diqxw==
113/tcp open  ident       syn-ack ttl 64
|_auth-owners: identd
139/tcp open  netbios-ssn syn-ack ttl 64 Samba smbd 3.X - 4.X (workgroup: LOCAL)
|_auth-owners: root
445/tcp open  netbios-ssn syn-ack ttl 64 Samba smbd 3.0.24 (workgroup: LOCAL)
|_auth-owners: root
MAC Address: 00:50:56:93:37:2B (VMware)
No exact OS matches for host (If you know what OS is running on it, see https://nmap.org/submit/ ).
TCP/IP fingerprint:
OS:SCAN(V=7.70%E=4%D=3/22%OT=22%CT=1%CU=35384%PV=Y%DS=1%DC=D%G=Y%M=005056%T
OS:M=5C95072B%P=x86_64-pc-linux-gnu)SEQ(SP=CB%GCD=1%ISR=CE%TI=Z%II=I%TS=8)O
OS:PS(O1=M529ST11NW6%O2=M529ST11NW6%O3=M529NNT11NW6%O4=M529ST11NW6%O5=M529S
OS:T11NW6%O6=M529ST11)WIN(W1=16A0%W2=16A0%W3=16A0%W4=16A0%W5=16A0%W6=16A0)E
OS:CN(R=Y%DF=Y%T=40%W=16D0%O=M529NNSNW6%CC=N%Q=)T1(R=Y%DF=Y%T=40%S=O%A=S+%F
OS:=AS%RD=0%Q=)T2(R=N)T3(R=N)T4(R=N)T5(R=Y%DF=Y%T=40%W=0%S=Z%A=S+%F=AR%O=%R
OS:D=0%Q=)T6(R=N)T7(R=N)U1(R=Y%DF=N%T=40%IPL=164%UN=0%RIPL=G%RID=G%RIPCK=G%
OS:RUCK=G%RUD=G)IE(R=Y%DFI=N%T=40%CD=S)

Uptime guess: 0.043 days (since Fri Mar 22 11:00:49 2019)
Network Distance: 1 hop
TCP Sequence Prediction: Difficulty=202 (Good luck!)
IP ID Sequence Generation: All zeros
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

Host script results:
|_clock-skew: mean: 1h59m59s, deviation: 2h49m42s, median: 0s
| nbstat: NetBIOS name: SUFFERANCE, NetBIOS user: <unknown>, NetBIOS MAC: <unknown> (unknown)
| Names:
|   SUFFERANCE<00>       Flags: <unique><active>
|   SUFFERANCE<03>       Flags: <unique><active>
|   SUFFERANCE<20>       Flags: <unique><active>
|   \x01\x02__MSBROWSE__\x02<01>  Flags: <group><active>
|   THINC.LOCAL<1d>      Flags: <unique><active>
|   THINC.LOCAL<1e>      Flags: <group><active>
|   THINC.LOCAL<00>      Flags: <group><active>
| Statistics:
|   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|_  00 00 00 00 00 00 00 00 00 00 00 00 00 00
| p2p-conficker: 
|   Checking for Conficker.C or higher...
|   Check 1 (port 63352/tcp): CLEAN (Couldn't connect)
|   Check 2 (port 4396/tcp): CLEAN (Couldn't connect)
|   Check 3 (port 18594/udp): CLEAN (Failed to receive data)
|   Check 4 (port 37051/udp): CLEAN (Failed to receive data)
|_  0/4 checks are positive: Host is CLEAN or ports are blocked
| smb-os-discovery: 
|   OS: Unix (Samba 3.0.24)
|   NetBIOS computer name: 
|   Workgroup: THINC.LOCAL\x00
|_  System time: 2019-03-22T12:02:46-04:00
| smb-security-mode: 
|   account_used: guest
|   authentication_level: share (dangerous)
|   challenge_response: supported
|_  message_signing: disabled (dangerous, but default)
|_smb2-security-mode: Couldn't establish a SMBv2 connection.
|_smb2-time: Protocol negotiation failed (SMB2)

TRACEROUTE
HOP RTT      ADDRESS
1   91.60 ms 10.11.1.136

NSE: Script Post-scanning.
NSE: Starting runlevel 1 (of 2) scan.
Initiating NSE at 12:02
Completed NSE at 12:02, 0.00s elapsed
NSE: Starting runlevel 2 (of 2) scan.
Initiating NSE at 12:02
Completed NSE at 12:02, 0.00s elapsed
Read data files from: /usr/bin/../share/nmap
OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 32.81 seconds
           Raw packets sent: 1294 (61.770KB) | Rcvd: 1066 (46.234KB)
@NoodleOfDeath

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commented May 22, 2019

Oddly enough, it does work on a Windows target using both the master and my fix. I guess a duplicate backslash does not deter the name detection but a lack thereof can be unpredictable:

On master

root@KaliNoodle:~/git/metasploit-framework# git checkout master
Switched to branch 'master'
Your branch is up to date with 'origin/master'.
root@KaliNoodle:~/git/metasploit-framework# ./msfconsole
msf5 > setg RHOSTS 10.11.1.5
RHOSTS => 10.11.1.5
msf5 > use auxiliary/scanner/smb/pipe_auditor
msf5 auxiliary(scanner/smb/pipe_auditor) > run
[+] 10.11.1.5:445         - Pipes: \netlogon, \lsarpc, \samr, \browser, \epmapper, \srvsvc, \trkwks, \wkssvc
[*] 10.11.1.5:            - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed

On my branch fix

root@KaliNoodle:~/git/metasploit-framework#  git checkout smb/client/pipe_auditor
Switched to branch 'smb/client/pipe_auditor'
Your branch is up to date with 'origin/smb/client/pipe_auditor'
root@KaliNoodle:~/git/metasploit-framework# ./msfconsole
msf5 > use auxiliary/scanner/smb/pipe_auditor
msf5 auxiliary(scanner/smb/pipe_auditor) > setg RHOSTS 10.11.1.5
RHOSTS => 10.11.1.5
msf5 auxiliary(scanner/smb/pipe_auditor) > run
[+] 10.11.1.5:445         - Pipes: \\netlogon, \\lsarpc, \\samr, \\browser, \\epmapper, \\srvsvc, \\trkwks, \\wkssvc
[*] 10.11.1.5:            - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
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commented May 22, 2019

Damn, sounds like you found a bug in our implementation when interacting with Samba. I'll test against Samba and report back, hopefully with a reason why it fails.

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commented May 22, 2019

Testing Samba 4.x, not your 3.x as supposedly identified by Nmap:

msf5 auxiliary(scanner/smb/pipe_auditor) > run

[*] 172.28.128.3:139      - Connected to named pipe: netlogon
[*] 172.28.128.3:139      - Connected to named pipe: lsarpc
[*] 172.28.128.3:139      - Connected to named pipe: samr
[-] 172.28.128.3:139      - Inaccessible named pipe: browser - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 172.28.128.3:139      - Inaccessible named pipe: atsvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 172.28.128.3:139      - Inaccessible named pipe: DAV RPC SERVICE - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 172.28.128.3:139      - Inaccessible named pipe: epmapper - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 172.28.128.3:139      - Connected to named pipe: eventlog
[*] 172.28.128.3:139      - Connected to named pipe: InitShutdown
[-] 172.28.128.3:139      - Inaccessible named pipe: keysvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 172.28.128.3:139      - Inaccessible named pipe: lsass - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 172.28.128.3:139      - Inaccessible named pipe: LSM_API_service - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 172.28.128.3:139      - Connected to named pipe: ntsvcs
[-] 172.28.128.3:139      - Inaccessible named pipe: plugplay - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 172.28.128.3:139      - Inaccessible named pipe: protected_storage - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 172.28.128.3:139      - Inaccessible named pipe: router - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 172.28.128.3:139      - Inaccessible named pipe: SapiServerPipeS-1-5-5-0-70123 - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 172.28.128.3:139      - Inaccessible named pipe: scerpc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 172.28.128.3:139      - Connected to named pipe: srvsvc
[-] 172.28.128.3:139      - Inaccessible named pipe: tapsrv - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 172.28.128.3:139      - Inaccessible named pipe: trkwks - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 172.28.128.3:139      - Inaccessible named pipe: W32TIME_ALT - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 172.28.128.3:139      - Connected to named pipe: wkssvc
[-] 172.28.128.3:139      - Inaccessible named pipe: PIPE_EVENTROOT\CIMV2SCM EVENT PROVIDER - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 172.28.128.3:139      - Inaccessible named pipe: db2remotecmd - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[+] 172.28.128.3:139      - Pipes: netlogon, lsarpc, samr, eventlog, InitShutdown, ntsvcs, srvsvc, wkssvc
[*] 172.28.128.3:         - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf5 auxiliary(scanner/smb/pipe_auditor) > previous
msf5 auxiliary(scanner/smb/smb_version) > run

[*] 172.28.128.3:445      - Host could not be identified: Windows 6.1 (Samba 4.3.11-Ubuntu)
[*] 172.28.128.3:445      - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf5 auxiliary(scanner/smb/smb_version) >
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commented May 22, 2019

Metasploitable 2's Samba 3.0.20 tested:

msf5 auxiliary(scanner/smb/pipe_auditor) > run

[-] 192.168.56.104:139    - Inaccessible named pipe: netlogon - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: lsarpc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: samr - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: browser - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: atsvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: DAV RPC SERVICE - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: epmapper - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: eventlog - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: InitShutdown - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: keysvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: lsass - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: LSM_API_service - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: ntsvcs - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: plugplay - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: protected_storage - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: router - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: SapiServerPipeS-1-5-5-0-70123 - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: scerpc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: srvsvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: tapsrv - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: trkwks - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: W32TIME_ALT - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: wkssvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: PIPE_EVENTROOT\CIMV2SCM EVENT PROVIDER - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: db2remotecmd - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 192.168.56.104:       - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf5 auxiliary(scanner/smb/pipe_auditor) > previous
msf5 auxiliary(scanner/smb/smb_version) > run

[*] 192.168.56.104:445    - Host could not be identified: Unix (Samba 3.0.20-Debian)
[*] 192.168.56.104:445    - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf5 auxiliary(scanner/smb/smb_version) >
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commented May 22, 2019

So it's probably not OffSec trying to mess with you for using Metasploit. ;)

This appears to be a Samba 3.x issue. I'll dig deeper in a bit.

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commented May 22, 2019

Working with patch:

msf5 auxiliary(scanner/smb/pipe_auditor) > run

[*] 192.168.56.104:139    - Connected to named pipe: \netlogon
[*] 192.168.56.104:139    - Connected to named pipe: \lsarpc
[*] 192.168.56.104:139    - Connected to named pipe: \samr
[-] 192.168.56.104:139    - Inaccessible named pipe: \browser - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: \atsvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: \DAV RPC SERVICE - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: \epmapper - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 192.168.56.104:139    - Connected to named pipe: \eventlog
[-] 192.168.56.104:139    - Inaccessible named pipe: \InitShutdown - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: \keysvc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 192.168.56.104:139    - Connected to named pipe: \lsass
[-] 192.168.56.104:139    - Inaccessible named pipe: \LSM_API_service - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 192.168.56.104:139    - Connected to named pipe: \ntsvcs
[-] 192.168.56.104:139    - Inaccessible named pipe: \plugplay - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: \protected_storage - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: \router - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: \SapiServerPipeS-1-5-5-0-70123 - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: \scerpc - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 192.168.56.104:139    - Connected to named pipe: \srvsvc
[-] 192.168.56.104:139    - Inaccessible named pipe: \tapsrv - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: \trkwks - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: \W32TIME_ALT - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[*] 192.168.56.104:139    - Connected to named pipe: \wkssvc
[-] 192.168.56.104:139    - Inaccessible named pipe: \PIPE_EVENTROOT\CIMV2SCM EVENT PROVIDER - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[-] 192.168.56.104:139    - Inaccessible named pipe: \db2remotecmd - The server responded with error: STATUS_OBJECT_NAME_NOT_FOUND (Command=162 WordCount=0)
[+] 192.168.56.104:139    - Pipes: \netlogon, \lsarpc, \samr, \eventlog, \lsass, \ntsvcs, \srvsvc, \wkssvc
[*] 192.168.56.104:       - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf5 auxiliary(scanner/smb/pipe_auditor) >
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commented May 23, 2019

That’s very strange. I wonder why Samba 3.x is different from all of the other versions. 🤔

Also thanks for showing me more into the process of documenting and making pull requests. This is my very first one actually

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Any style preference on using single vs double quoted strings? I’m referring specifically to lines 45 and 46 of lib/msg/core/exploit/smb/client/pipe_auditor.rb

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commented May 23, 2019

I used to prefer double-quoted strings all the time, but then I switched to single-quoted strings if I didn't need interpolation. It's more predictable. But the most important thing is to be consistent.

https://github.com/rubocop-hq/ruby-style-guide#consistent-string-literals

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commented May 23, 2019

You can see how backslash handling between 3.x and 4.x is different. 3.x is more stringent, and 4.x does more normalization.

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commented May 23, 2019

That’s why I asked. I am the same way; I only use double quotes if absolutely necessary. Thanks for the references, too

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commented May 23, 2019

@wvu-r7 wvu-r7 merged commit 0febc73 into rapid7:master May 23, 2019

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wvu-r7 added a commit that referenced this pull request May 23, 2019

msjenkins-r7 added a commit that referenced this pull request May 23, 2019

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commented May 23, 2019

Release Notes

This adds normalization to the pipe_auditor mixin (used by the module) to prefix named pipe names with a backslash. Samba 3.x doesn't perform any normalization on the pipe name, thus requiring the backslash. Samba 4.x and Windows are unaffected.

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commented May 23, 2019

@NoodleOfDeath: Awesome collab. Thanks for this!

wvu-r7 added a commit to wvu-r7/metasploit-framework that referenced this pull request May 23, 2019

@NoodleOfDeath NoodleOfDeath deleted the NoodleOfDeath:smb/client/pipe_auditor branch May 23, 2019

@NoodleOfDeath NoodleOfDeath restored the NoodleOfDeath:smb/client/pipe_auditor branch May 23, 2019

@NoodleOfDeath NoodleOfDeath deleted the NoodleOfDeath:smb/client/pipe_auditor branch May 23, 2019

@gdavidson-r7 gdavidson-r7 added the rn-fix label May 29, 2019

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