# AppLocker

## Overview

> AppLocker can be used to create rules that specify which applications are allowed to run, based on a variety of criteria, including the file path, publisher, file hash, and version. AppLocker can also be used to create rules that block specific applications or types of applications from running.

## Enumerating AppLocker policies

```powershell
Get-AppLockerPolicy -Effective | select -ExpandProperty RuleCollections
```

<figure><img src="/files/Iu8oK0FI98viwCVh4YYH" alt=""><figcaption></figcaption></figure>

## Bypassing examples

### Trusted folder

In AppLocker, a Trusted folder is a designated folder or set of folders that are exempt from application control policies. If the default AppLocker rules are applied, you should be able to execute executables from Read/Write/Executable folders within `C:\Program Files\` and `C:\Windows`.

#### To locate Writeable and executable folder

**Using accesschk.exe:**

```powershell
accesschk.exe "student" C:\Windows -wus
```

<figure><img src="/files/pF8fPn7lb5cbU9C06jkt" alt=""><figcaption></figcaption></figure>

**Verify they are executable:**

```powershell
icacls.exe C:\Windows\Tasks
```

<figure><img src="/files/CBX2WTKc0GbTH30FEqVQ" alt=""><figcaption></figcaption></figure>

### Unmanaged DLLs

AppLocker default rule set does not protect against loading arbitrary DLLs.

## References

{% embed url="<https://github.com/milkdevil/UltimateAppLockerByPassList>" %}

{% embed url="<https://github.com/api0cradle/UltimateAppLockerByPassList/blob/master/VerifiedAppLockerBypasses.md>" %}


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