The PowerShell.BeginInvoke<TInput, TOutput>(PSDataCollection<TInput>,
PSDataCollection<TOutput>) method[1] is used to collect output from
each job into a buffer. This can be read whilst the jobs are still
running. Being able to return partial results is particularly useful for
long running background threads, such as Invoke-UserHunter -Poll.
PowerShell 2.0 doesn't play nicely with generic methods. The technique
described in [2] is used to allow this version of BeginInvoke() to be
used.
[1] https://msdn.microsoft.com/en-us/library/dd182440(v=vs.85).aspx
[2] http://www.leeholmes.com/blog/2007/06/19/invoking-generic-methods-on-non-generic-classes-in-powershell/
Repeatedly poll a set of target computers for user sessions. This could
be a useful technique for building a much better picture of current
sessions, but without having to communicate with every host.
The -Poll parameter is used to specify the duration for which polling
should occur. Each target computer is dedicated with a thread with
-Delay and -Jitter specifying how long to sleep between each session
enumeration attempt of an individual host.
Added default value to parameter and got rid of value check later in the code.
Added validation of -Server value to ensure it is not $Null or an empty string
Added the ability for users to specify the domain controller that is searched, using the -Server parameter. The -Server parameter is optional and defaults to the user's current domain if not specified.
The current implementation results in a .bat like:
@echo off\n
start /b net user john Password123! /add && timeout /t 5 && net localgroup Administrators john /add\n
start /b "" cmd /c del "%~f0"&exit /b
With literal "\n" strings at the end of the first two lines.
A new line in a PowerShell string should be "`n". However, an extra new
line isn't actually necessary in this case.
Make an initial call to GetTokenInformation() with a NULL buffer to get
the actual buffer size required. Prevents "The data area passed to a system
call is too small" error being thrown.
Fixed other logic bugs in Get-ModifiablePath
Fixed bug in Add-ServiceDacl when the [ServiceProcess.ServiceController] wasn't loaded yet by Get-Service
Error handling for Get-CachedGPPPassword
Changed some Write-Warnings to Write-Verbose
Updated Privesc Pester tests for PowerUp
Christoph Falta