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#!/usr/bin/env ruby
# -*- coding: binary -*-
#
# $Id$
# $Revision$
#

msfbase = __FILE__
while File.symlink?(msfbase)
msfbase = File.expand_path(File.readlink(msfbase), File.dirname(msfbase))
end

$:.unshift(File.expand_path(File.join(File.dirname(msfbase), 'lib')))
require 'fastlib'
require 'msfenv'



$:.unshift(ENV['MSF_LOCAL_LIB']) if ENV['MSF_LOCAL_LIB']

require 'rex'

$args = Rex::Parser::Arguments.new(
"-h" => [ false, "Help banner" ],
"-l" => [ false, "List available payloads" ]
)

#
# Nuff said.
#
def usage
$stderr.puts("\n" +
" Usage: #{$0} [<options>] <payload> [var=val] <[S]ummary|C|[P]erl|Rub[y]|[R]aw|[J]s|e[X]e|[D]ll|[V]BA|[W]ar>\n" +
$args.usage)
exit
end

cmd = nil
rest = []

# Parse the argument and rock that shit.
$args.parse(ARGV) { |opt, idx, val|
#puts "opt[%d]: #{opt.inspect} / #{val.inspect}" % idx

case opt
when "-l"
cmd = "list"
break

# Non-option (don't begin with '-') are processed here
when nil
rest << val

end
}

if (cmd != "list" and rest.length < 2)
usage
end

require 'msf/ui'
require 'msf/base'

#
# Dump the list of payloads
#
def dump_payloads
tbl = Rex::Ui::Text::Table.new(
'Indent' => 4,
'Header' => "Framework Payloads (#{$framework.stats.num_payloads} total)",
'Columns' =>
[
"Name",
"Description"
])

$framework.payloads.each_module { |name, mod|
tbl << [ name, mod.new.description ]
}

"\n" + tbl.to_s + "\n"
end

# Initialize the simplified framework instance.
$framework = Msf::Simple::Framework.create(
:module_types => [ Msf::MODULE_PAYLOAD, Msf::MODULE_NOP ],
'DisableDatabase' => true
)

if cmd == "list"
puts dump_payloads
exit
end


# Get the payload name we'll be using
payload_name = rest.shift

# Process special var/val pairs...
Msf::Ui::Common.process_cli_arguments($framework, rest)

# Create the payload instance
payload = $framework.payloads.create(payload_name)

if (payload == nil)
$stderr.puts "Invalid payload: #{payload_name}"
exit
end

# Evalulate the command
cmd = rest.pop.downcase

# Populate the framework datastore
options = {}
rest.each do |x|
k,v = x.split("=", 2)
options[k] = v.to_s
end

payload.datastore.merge! options

if (cmd =~ /^(p|y|r|d|c|j|x|b|v|w)/)
fmt = 'perl' if (cmd =~ /^p/)
fmt = 'ruby' if (cmd =~ /^y/)
fmt = 'raw' if (cmd =~ /^(r|x|d)/)
fmt = 'raw' if (cmd =~ /^v/)
fmt = 'c' if (cmd == 'c')
fmt = 'js_be' if (cmd =~ /^j/ and Rex::Arch.endian(payload.arch) == ENDIAN_BIG)
fmt = 'js_le' if (cmd =~ /^j/ and ! fmt)
fmt = 'java' if (cmd =~ /^b/)
fmt = 'raw' if (cmd =~ /^w/)
enc = options['ENCODER']

begin
buf = payload.generate_simple(
'Format' => fmt,
'Options' => options,
'Encoder' => enc)
rescue
$stderr.puts "Error generating payload: #{$!}"
exit
end

$stdout.binmode

if (cmd =~ /^x/)
note =
"Created by msfpayload (http://www.metasploit.com).\n" +
"Payload: " + payload.refname + "\n" +
" Length: " + buf.length.to_s + "\n" +
"Options: " + options.inspect + "\n"

arch = payload.arch
plat = payload.platform.platforms

exe = Msf::Util::EXE.to_executable($framework, arch, plat, buf)

if(!exe and plat.index(Msf::Module::Platform::Java))
exe = payload.generate_jar.pack
end

if(exe)
$stderr.puts(note)
$stdout.write(exe)
exit(0)
end

$stderr.puts "No executable format support for this arch/platform"
exit(-1)
end

if(cmd =~ /^v/)
exe = Msf::Util::EXE.to_win32pe($framework, buf)
note =
"'Created by msfpayload (http://www.metasploit.com).\r\n" +
"'Payload: " + payload.refname + "\r\n" +
"' Length: " + buf.length.to_s + "\r\n" +
"'Options: " + options.inspect + "\r\n"

vba = note + "\r\n" + Msf::Util::EXE.to_exe_vba(exe)
$stdout.write(vba)
exit(0)
end

if(cmd =~ /^d/)
dll = Msf::Util::EXE.to_win32pe_dll($framework, buf)
note =
"Created by msfpayload (http://www.metasploit.com).\r\n" +
"Payload: " + payload.refname + "\r\n" +
" Length: " + buf.length.to_s + "\r\n" +
"Options: " + options.inspect + "\r\n"

if(dll)
$stderr.puts(note)
$stdout.write(dll)
exit(0)
end

$stderr.puts "Failed to build dll"
exit(-1)
end

if(cmd =~ /^w/)
note =
"Created by msfpayload (http://www.metasploit.com).\n" +
"Payload: " + payload.refname + "\n" +
" Length: " + buf.length.to_s + "\n" +
"Options: " + options.inspect + "\n"

arch = payload.arch
plat = payload.platform.platforms

exe = Msf::Util::EXE.to_executable($framework, arch, plat, buf)
if(!exe and plat.index(Msf::Module::Platform::Java))
exe = payload.generate_war.pack
else
exe = Msf::Util::EXE.to_jsp_war(exe)
end


if(exe)
$stderr.puts(note)
$stdout.write(exe)
exit(0)
end

$stderr.puts "No executable format support for this arch/platform"
exit(-1)
end

$stdout.write(buf)

elsif (cmd =~ /^(s|o)/)
payload.datastore.import_options_from_s(rest.join('_|_'), '_|_')
puts Msf::Serializer::ReadableText.dump_module(payload)

else
$stderr.puts "Invalid command: #{cmd.inspect}"

end
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