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Diffstat (limited to 'Extras/Invoke-NBNSC2.ps1')
| -rw-r--r-- | Extras/Invoke-NBNSC2.ps1 | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/Extras/Invoke-NBNSC2.ps1 b/Extras/Invoke-NBNSC2.ps1 deleted file mode 100644 index 41d2e64..0000000 --- a/Extras/Invoke-NBNSC2.ps1 +++ /dev/null @@ -1,151 +0,0 @@ -function Invoke-NBNSC2 -{ -<# -.SYNOPSIS -Invoke-NBNSC2 will listen for NBNS requests and execute set commands if requests for specific hostnames are -received. The function must be supplied with an even number of Hostnames and Commands. NBNS requests can be -sent from a NBNS enabled system on the same subnet using ping, etc. - -.PARAMETER Hostnames -A comma separated list of Hostnames that will trigger a corresponding command. The first hostname trigger a command -from the Commands array with a matching index (e.g. Hostnames[0] executes Commands[0]). - -.PARAMETER Commands -An array of commands stored in scriptblock format. All commands must be enclosed in {} brackets. - -.PARAMETER ExitHostname -Specify a hostname that will cause the function to exit. This hostname must not match a hostname used in Hostnames. - -.PARAMETER RunTime -(Integer) Set the run time duration. - -.PARAMETER RunTimeUnit -Default = Minutes: Set the time unit for RunTime to either Minutes, Hours, or Days. - -.EXAMPLE -Send-NBNSC2 -Hostnames test1,test2 -Command {calc},{notepad} -RunTime 1 -RunTimeUnit Days - -.LINK -https://github.com/Kevin-Robertson/Inveigh -#> - -[CmdletBinding()] -param -( -[parameter(Mandatory=$true)][Array]$Hostnames = "", -[parameter(Mandatory=$true)][Array]$Commands = "", -[parameter(Mandatory=$true)][String]$ExitHostname = "", -[parameter(Mandatory=$false)][Int]$RunTime="", -[parameter(Mandatory=$false)][ValidateSet("Minutes","Hours","Days")][String]$RunTimeUnit="Minutes", -[parameter(ValueFromRemainingArguments=$true)]$invalid_parameter -) - -if ($invalid_parameter) -{ - throw "$($invalid_parameter) is not a valid parameter." -} - -if($Hostnames.Count -ne $Commands.Count) -{ - throw "Must use an equal number of Hostnames and Commands." -} -elseif($Hostnames -contains $ExitHostname) -{ - throw "ExitHostname cannot be used as in Hostnames." -} - -if($RunTime) -{ - if($RunTimeUnit -like 'Minutes') - { - $runtime_timeout = new-timespan -Minutes $RunTime - } - elseif($RunTimeUnit -like 'Hours') - { - $runtime_timeout = new-timespan -Hours $RunTime - } - elseif($RunTimeUnit -like 'Days') - { - $runtime_timeout = new-timespan -Days $RunTime - } - - $runtime_stopwatch = [System.Diagnostics.Stopwatch]::StartNew() -} - -$Hostnames = $Hostnames | % {$_.ToUpper()} -$running = $true -$NBNS_listener_endpoint = New-Object System.Net.IPEndPoint ([IPAddress]::Broadcast,137) -$NBNS_UDP_client = New-Object System.Net.Sockets.UdpClient 137 -$NBNS_UDP_client.Client.ReceiveTimeout = 10000 -$control_timeout = new-timespan -Seconds 1 -$control_stopwatch = [System.Diagnostics.Stopwatch]::StartNew() - -while($running) -{ - try - { - $NBNS_request_data = $NBNS_UDP_client.Receive([Ref]$NBNS_listener_endpoint) - } - catch - { - $NBNS_request_data = $null - } - - if($NBNS_request_data) - { - $NBNS_query = [System.BitConverter]::ToString($NBNS_request_data[13..($NBNS_request_data.Length - 4)]) - $NBNS_query = $NBNS_query -replace "-00","" - $NBNS_query = $NBNS_query.Split("-") | ForEach-Object{[Char][System.Convert]::ToInt16($_,16)} - $NBNS_query_string_encoded = New-Object System.String ($NBNS_query,0,$NBNS_query.Length) - $NBNS_query_string_encoded = $NBNS_query_string_encoded.Substring(0,$NBNS_query_string_encoded.IndexOf("CA")) - $NBNS_query_string_subtracted = "" - $NBNS_query_string = "" - $n = 0 - - if($NBNS_query_string_encoded.Length -gt 1) - { - do - { - $NBNS_query_string_sub = (([Byte][Char]($NBNS_query_string_encoded.Substring($n,1))) - 65) - $NBNS_query_string_subtracted += ([System.Convert]::ToString($NBNS_query_string_sub,16)) - $n += 1 - } - until($n -gt ($NBNS_query_string_encoded.Length - 1)) - - $n = 0 - - do - { - $NBNS_query_string += ([Char]([System.Convert]::ToInt16($NBNS_query_string_subtracted.Substring($n,2),16))) - $n += 2 - } - until($n -gt ($NBNS_query_string_subtracted.Length - 1) -or $NBNS_query_string.Length -eq 15) - } - - if([Array]::IndexOf($Hostnames,$NBNS_query_string) -ge 0 -and $control_stopwatch.Elapsed -ge $control_timeout) - { - $NBNS_UDP_client.Close() - $command_index = [Array]::IndexOf($Hostnames,$NBNS_query_string) - $NBNS_query_string = '' - & $Commands[$command_index] - $control_timeout = new-timespan -Seconds 5 - $control_stopwatch = [System.Diagnostics.Stopwatch]::StartNew() - $NBNS_UDP_client = New-Object System.Net.Sockets.UdpClient 137 - $NBNS_UDP_client.Client.ReceiveTimeout = 10000 - } - elseif($ExitHostname -like $NBNS_query_string) - { - $running = $false - } - } - - if($RunTime -and $runtime_stopwatch.Elapsed -ge $runtime_timeout) - { - $running = $false - } - -} - -$NBNS_UDP_client.Close() - -}
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