169 lines
3.8 KiB
Ruby
Executable File
169 lines
3.8 KiB
Ruby
Executable File
#!/usr/bin/ruby
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$:.unshift(File.join(File.dirname(__FILE__), '../lib'))
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require 'rex'
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require 'msf/ui'
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require 'msf/base'
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OutStatus = "[*] "
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OutError = "[-] "
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$args = Rex::Parser::Arguments.new(
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"-i" => [ true, "Encode the contents of the supplied file path" ],
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"-a" => [ true, "The architecture to encode as" ],
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"-t" => [ true, "The format to display the encoded buffer with (raw, ruby, perl, c)" ],
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"-b" => [ true, "The list of characters to avoid: '\\x00\\xff'" ],
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"-s" => [ true, "The maximum size of the encoded data" ],
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"-e" => [ true, "The encoder to use" ],
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"-n" => [ false, "Dump encoder information" ],
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"-h" => [ false, "Help banner" ],
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"-l" => [ false, "List available encoders" ])
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#
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# Dump the list of encoders
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#
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def dump_encoders(arch = nil)
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tbl = Rex::Ui::Text::Table.new(
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'Indent' => 4,
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'Header' => "Framework Encoders" + ((arch) ? " (architectures: #{arch})" : ""),
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'Columns' =>
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[
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"Name",
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"Rank",
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"Description"
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])
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cnt = 0
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$framework.encoders.each_module(
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'Arch' => arch ? arch.split(',') : nil) { |name, mod|
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tbl << [ name, mod.rank_to_s, mod.new.description ]
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cnt += 1
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}
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(cnt > 0) ? "\n" + tbl.to_s + "\n" : "\nNo compatible encoders found.\n\n"
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end
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#
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# Returns the list of encoders to try
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#
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def get_encoders(arch, encoder)
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encoders = []
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if (encoder)
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encoders << $framework.encoders.create(encoder)
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else
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$framework.encoders.each_module_ranked(
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'Arch' => arch ? arch.split(',') : nil) { |name, mod|
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encoders << mod.new
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}
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end
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encoders
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end
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#
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# Nuff said.
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#
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def usage
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$stderr.puts("\n" + " Usage: #{$0} <options>\n" + $args.usage)
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exit
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end
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# Initialize the simplified framework instance.
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$framework = Msf::Simple::Framework.create
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# Defaults
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cmd = "encode"
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arch = nil
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badchars = ''
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space = nil
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encoder = nil
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fmt = "c"
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input = $stdin
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options = ''
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# Parse the argument and rock that shit.
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$args.parse(ARGV) { |opt, idx, val|
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case opt
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when "-i"
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begin
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input = File.new(val)
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rescue
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$stderr.puts(OutError + "Failed to open file #{val}: #{$!}")
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exit
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end
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when "-l"
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cmd = "list"
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when "-n"
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cmd = "dump"
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when "-a"
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arch = val
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when "-b"
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badchars = Rex::Text.hex_to_raw(val)
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when "-s"
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space = val.to_i
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when "-t"
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if (val =~ /^(perl|ruby|raw|c)$/)
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fmt = val
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else
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$stderr.puts(OutError + "Invalid format: #{val}")
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exit
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end
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when "-e"
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encoder = val
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when "-h"
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usage
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else
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if (val =~ /=/)
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options += ((options.length > 0) ? "," : "") + "#{val}"
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end
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end
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}
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# Get the list of encoders to try
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encoders = get_encoders(arch, encoder)
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# Process the actual command
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case cmd
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when "list"
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$stderr.puts(dump_encoders(arch))
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when "dump"
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enc = $framework.encoders.create(encoder)
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if (enc)
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$stderr.puts(Msf::Serializer::ReadableText.dump_module(enc))
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else
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$stderr.puts(OutError + "Invalid encoder specified.")
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end
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when "encode"
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buf = input.readlines.join
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encoders.each { |enc|
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begin
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# Imports options
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enc.datastore.import_options_from_s(options)
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# Encode it upt
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raw = enc.encode(buf, badchars)
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# Is it too big?
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if (space and space > 0 and raw.length > space)
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$stderr.puts(OutError + "#{enc.refname} created buffer that is too big (#{raw.length})")
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next
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end
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# Print it out
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$stderr.puts(OutStatus + "#{enc.refname} succeeded, final size #{raw.length}\n\n")
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$stdout.print(Msf::Simple::Buffer.transform(raw, fmt))
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exit
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rescue
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$stderr.puts(OutError + "#{enc.refname} failed: #{$!}")
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end
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}
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$stderr.puts(OutError + "No encoders succeeded.")
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end
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