Evil-WinRM

The ultimate WinRM shell for hacking/pentesting

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                           By: CyberVaca@HackPlayers

Description & Purpose

This shell is the ultimate WinRM shell for hacking/pentesting.

WinRM (Windows Remote Management) is the Microsoft implementation of WS-Management Protocol. A standard SOAP based protocol that allows hardware and operating systems from different vendors to interoperate. Microsoft included it in their Operating Systems in order to make life easier to system adminsitrators.

This program can be used on any Microsoft Windows Servers with this feature enabled (usually at port 5985), of course only if you have credentials and permissions to use it. So we can say that it could be used in a post-exploitation hacking/pentesting phase. The purpose of this program is to provide nice and easy-to-use features for hacking. It can be used with legitimate purposes by system administrators as well but the most of its features are focused on hacking/pentesting stuff.

Features

Command History
WinRM command completion
Local files completion
Upload and download files
List remote machine services
FullLanguage Powershell language mode
Load Powershell scripts
Load in memory dll files bypassing some AVs
Load in memory C# (C Sharp) compiled exe files bypassing some AVs
Colorization on output messages (can be disabled optionally)

Requirements & Installation

Ruby 2.3 or higher is needed. Some ruby gems are needed as well: winrm, winrm-fs, colorize and stringio.

~$ sudo gem install winrm winrm-fs colorize stringio

Quick Start

Step 1. Edit the connection parameters to point correctly to your endpoint and set the right paths to your script and executable files.
Step 2. Ready. Just launch it! ~$ ruby evil-winrm.rb

Example:

# Set the path for your scripts (ps1 files) and your executables (exe files)
$scripts_path = "/home/foo/ps1_scripts/"
$executables_path = "/home/foo/exe_files/"

# Connection parameters, set your ip address or hostname, your user and password
conn = WinRM::Connection.new(
    endpoint: 'http://192.168.1.100:5985/wsman',
    user: 'testdomain\Administrator',
    password: 'MySuperSecr3tPass123!',
    :no_ssl_peer_verification => true,
    # Below, config for SSL, uncomment if needed and set cert files
    # transport: :ssl,
    # client_cert: 'certnew.cer',
    # client_key: 'client.key',
)

To use IPv6, the address must be added to /etc/hosts.

Documentation

Basic commands

upload: local files can be auto-completed using tab key. It is not needed to put a remote_path if the local file is in the same directory as evil-winrm.rb file.
- usage: upload local_path remote_path
download: it is not needed to set local_path if the remote file is in the current directory.
- usage: download remote_path local_path
services: list all services. No administrator permissions needed.
menu: load the Invoke-Binary and l04d3r-LoadDll functions that we will explain below. When a ps1 is loaded all its functions will be shown up.

Load powershell scripts

To load a ps1 file you just have to type the name (auto-completion usnig tab allowed). The scripts must be in the path set at $scripts_path variable. Type menu again and see the loaded functions.

Advanced commands

Invoke-Binary: allows exes compiled from c# to be executed in memory. The name can be auto-completed using tab key and allows up to 3 parameters. The executables must be in the path set at $executables_path variable.
l04d3r-LoadDll: allows loading dll libraries in memory, it is equivalent to: [Reflection.Assembly]::Load([IO.File]::ReadAllBytes("pwn.dll"))

The dll file can be hosted by smb, http or locally.

Extra features

To disable colors just modify on code this variable $colors_enabled. Set it to false: $colors_enabled = false

Credits:

Main author:

cybervaca

Collaborators, documenters, testers and supporters:

Based on the Alamot's original code.

Thanks to 3v4Si0N for his awesome dll loader.

Disclaimer & License

This script is licensed under LGPLv3+. Direct link to License.

Evil-WinRM should be used for authorized penetration testing and/or nonprofit educational purposes only. Any misuse of this software will not be the responsibility of the author or of any other collaborator. Use it at your own servers and/or with the server owner's permission.

Ravana-Astra / evil-winrm