3389 - Pentesting RDP
Last updated
Last updated
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Developed by Microsoft, the Remote Desktop Protocol (RDP) is designed to enable a graphical interface connection between computers over a network. To establish such a connection, RDP client software is utilized by the user, and concurrently, the remote computer is required to operate RDP server software. This setup allows for the seamless control and access of a distant computer's desktop environment, essentially bringing its interface to the user's local device.
Default port: 3389
It checks the available encryption and DoS vulnerability (without causing DoS to the service) and obtains NTLM Windows info (versions).
Be careful, you could lock accounts
Be careful, you could lock accounts
rdp_check.py from impacket let you check if some credentials are valid for a RDP service:
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Find and report critical, exploitable vulnerabilities with real business impact. Use our 20+ custom tools to map the attack surface, find security issues that let you escalate privileges, and use automated exploits to collect essential evidence, turning your hard work into persuasive reports.
With SYSTEM permissions you can access any opened RDP session by any user without need to know the password of the owner.
Get openned sessions:
Access to the selected session
Now you will be inside the selected RDP session and you will have impersonate a user using only Windows tools and features.
Important: When you access an active RDP sessions you will kickoff the user that was using it.
You could get passwords from the process dumping it, but this method is much faster and led you interact with the virtual desktops of the user (passwords in notepad without been saved in disk, other RDP sessions opened in other machines...)
You could also use mimikatz to do this:
Combining this technique with stickykeys or utilman you will be able to access a administrative CMD and any RDP session anytime
You can search RDPs that have been backdoored with one of these techniques already with: https://github.com/linuz/Sticky-Keys-Slayer
If someone from a different domain or with better privileges login via RDP to the PC where you are an Admin, you can inject your beacon in his RDP session process and act as him:
RDP Sessions AbuseAutoRDPwn is a post-exploitation framework created in Powershell, designed primarily to automate the Shadow attack on Microsoft Windows computers. This vulnerability (listed as a feature by Microsoft) allows a remote attacker to view his victim's desktop without his consent, and even control it on demand, using tools native to the operating system itself.
Control mouse and keyboard in an automated way from command line
Control clipboard in an automated way from command line
Spawn a SOCKS proxy from the client that channels network communication to the target via RDP
Execute arbitrary SHELL and PowerShell commands on the target without uploading files
Upload and download files to/from the target even when file transfers are disabled on the target
Get a hacker's perspective on your web apps, network, and cloud
Find and report critical, exploitable vulnerabilities with real business impact. Use our 20+ custom tools to map the attack surface, find security issues that let you escalate privileges, and use automated exploits to collect essential evidence, turning your hard work into persuasive reports.
Learn & practice AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE) Learn & practice GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)
