SharpStrike - A Post Exploitation Tool Written In C# Uses Either CIM Or WMI To Query Remote Systems

2021-09-08T20:30:00
ID KITPLOIT:2939261774409388503
Type kitploit
Reporter KitPloit
Modified 2021-09-08T20:30:00

Description

SharpStrike is a post-exploitation tool written in C# that uses either CIM or WMI to query remote systems. It can use provided credentials or the current user's session.

Note: Some commands will use PowerShell in combination with WMI, denoted with ** in the --show-commands command.

Introduction

SharpStrike is a C# rewrite and expansion on @Matt_Grandy_ 's CIMplant and @christruncer 's WMImplant .

SharpStrike allows you to gather data about a remote system, execute commands, exfil data, and more. The tool allows connections using Windows Management Instrumentation, WMI , or Common Interface Model, CIM ; well more accurately Windows Management Infrastructure, MI . CIMplant requires local administrator permissions on the target system.

Setup:

It's probably easiest to use the built version under Releases, just note that it is compiled in Debug mode. If you want to build the solution yourself, follow the steps below.

  1. Load SharpStrike.sln into Visual Studio
  2. Go to Build at the top and then Build Solution if no modifications are wanted

The Build will produce two versions of SharpStrike: GUI (WinForms) & Console application. Each version implements the same features.

Usage

Console Version:

SharpStrike.exe --help  
SharpStrike.exe --show-commands  
SharpStrike.exe --show-examples  
SharpStrike.exe -c ls_domain_admins  
SharpStrike.exe -c ls_domain_users_list  
SharpStrike.exe -c cat -f "c:\users\user\desktop\file.txt" -s [remote IP address]  
SharpStrike.exe -c cat -f "c:\users\user\desktop\file.txt" -s [remote IP address] -u [username] -d [domain] -p [password] -c   
SharpStrike.exe -c command_exec -e "quser" -s [remote IP address] -u [username] -d [domain] -p [password]

GUI version:

show-commands  
show-examples  
ls_domain_admins  
ls_domain_users_list  
cat -f "c:\users\user\desktop\file.txt" -s [remote IP address]  
cat -f "c:\users\user\desktop\file.txt" -s [remote IP address] -u [username] -d [domain] -p [password]  
command_exec -e "quser" [remote IP address] -u [username] -d [domain] -p [password]

Functions

File Operations:

cat                          -  Reads the contents of a file  
copy                         -  Copies a file from one location to another  
download**                   -  Download a file from the targeted machine  
ls                           -  File/Directory listing of a specific directory  
search                       -  Search for a file on a user  
upload**                     -  Upload a file to the targeted machine

Lateral Movement Facilitation

command line command and receive the output. Run with nops flag to disable PowerShell disable_wdigest - Sets the registry value for UseLogonCredential to zero enable_wdigest - Adds registry value UseLogonCredential disable_winrm - Disables WinRM on the targeted system enable_winrm* - Enables WinRM on the targeted system reg_mod - Modify the registry on the targeted machine reg_create - Create the registry value on the targeted machine reg_delete - Delete the registry on the targeted machine remote_posh** - Run a PowerShell script on a remote machine and receive the output sched_job - Not implimented due to the Win32_ScheduledJobs accessing an outdated API service_mod - Create, delete, or modify system services ls_domain_users - List domain users ls_domain_users_list - List domain users sAMAccountName ls_domain_users_email - List domain users email address ls_domain_groups - List domain user groups ls_domain_admins - List domain admin users ls_user_groups - List domain user with their associated groups ls_computers - List computers on current domain ">

command_exec**               -  Run a command line command and receive the output. Run with nops flag to disable PowerShell  
disable_wdigest              -  Sets the registry value for UseLogonCredential to zero  
enable_wdigest               -  Adds registry value UseLogonCredential  
disable_winrm**              -  Disables WinRM on the targeted system  
enable_winrm**               -  Enables WinRM on the targeted system  
reg_mod                      -  Modify the registry on the targeted machine  
reg_create                   -  Create the registry value on the targeted machine  
reg_delete                   -  Delete the registry on the targeted machine  
remote_posh**                -  Run a PowerShell script on a remote machine and receive the output  
sched_job                    -  Not implimented due to the Win32_ScheduledJobs accessing an outdated API  
service_mod                  -  Create, delete, or modify system services  
ls_do   main_users***           - List domain users                                   
ls_domain_users_list***      - List domain users sAMAccountName                    
ls_domain_users_email***     - List domain users email address                     
ls_domain_groups***          - List domain user groups                             
ls_domain_admins***          - List domain admin users                             
ls_user_groups***            - List domain user with their associated groups  
ls_computers***              - List computers on current domain

Process Operations

process_kill                 -  Kill a process via name or process id on the targeted machine  
process_start                -  Start a process on the targeted machine  
ps                           -  Process listing

System Operations

active_users                 -  List domain users with active processes on the targeted system  
basic_info                   -  Used to enumerate basic metadata about the targeted system  
drive_list                   -  List local and network drives  
share_list                   -  List network shares  
ifconfig                     -  Receive IP info from NICs with active network connections  
installed_programs           -  Receive a list of the installed programs on the targeted machine  
logoff                       -  Log users off the targeted machine  
reboot (or restart)          -  Reboot the targeted machine  
power_off (or shutdown)      -  Power off the targeted machine  
vacant_system                -  Determine if a user is away from the system  
edr_query                    -  Query the local or remote system for EDR vendors

Log Operations

logon_events                 -  Identify users that have logged onto a system

* All PowerShell can be disabled by using the --nops flag, although some commands will not execute (upload/download, enable/disable WinRM)  
** Denotes PowerShell usage (either using a PowerShell Runspace or through Win32_Process::Create method)  
*** Denotes LDAP usage - "root\directory\ldap" namespace

Some Example Usage Commands

Console version: A Post exploitation tool written in C# uses either CIM or WMI to query remote systems. (1)

GUI version:

Solution Architecture

SharpStrike is composed of three main projects

  1. ServiceLayer -- Provides core functionality and consumed by the UI layer
  2. Models -- Contains types, shared across all projects
  3. User Interface -- GUI/Console

ServiceLayer

  1. Connector.cs

> This is where the initial CIM/WMI connections are made and passed to the rest of the application

  1. ExecuteWMI.cs

> All function code for the WMI commands

  1. ExecuteCIM.cs

> All function code for the CIM (MI) commands

Read more

CIMplant Part 1: Detection of a C# Implementation of WMImplant

WMImplant – A WMI Based Agentless Post-Exploitation RAT Developed in PowerShell

SharpStrike | Post-exploitation tool | CIM & WMI Inside

Download SharpStrike