## # This module requires Metasploit: http//metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' require 'rex/encoder/alpha2/unicode_mixed' class Metasploit3 < Msf::Encoder::Alphanum Rank = ManualRanking def initialize super( 'Name' => "Alpha2 Alphanumeric Unicode Mixedcase Encoder", 'Description' => %q{ Encodes payloads as unicode-safe mixedcase text. This encoder uses SkyLined's Alpha2 encoding suite. }, 'Author' => [ 'pusscat', 'skylined' ], 'Arch' => ARCH_X86, 'License' => BSD_LICENSE, 'EncoderType' => Msf::Encoder::Type::AlphanumUnicodeMixed, 'Decoder' => { 'BlockSize' => 1, }) end # # Returns the decoder stub that is adjusted for the size of the buffer # being encoded. # def decoder_stub(state) reg = datastore['BufferRegister'] offset = datastore['BufferOffset'].to_i || 0 if (not reg) raise RuntimeError, "Need BufferRegister" end Rex::Encoder::Alpha2::UnicodeMixed::gen_decoder(reg, offset) end # # Encodes a one byte block with the current index of the length of the # payload. # def encode_block(state, block) Rex::Encoder::Alpha2::UnicodeMixed::encode_byte(block.unpack('C')[0], state.badchars) end # # Tack on our terminator # def encode_end(state) state.encoded += Rex::Encoder::Alpha2::UnicodeMixed::add_terminator() end # # Returns the unicode version of the supplied buffer. # def to_native(buffer) Rex::Text.to_unicode(buffer) end end