Land #7032, rm -rf lib/rex/encoders

Dead code!

lib/rex/encoders/xor_dword.rb

@@ -1,35 +0,0 @@
-# -*- coding: binary -*-
-
-require 'rex/arch/x86'
-require 'rex/encoder/xor/dword'
-
-module Rex
-module Encoders
-
-###
-#
-# Spoon's smaller variable-length encoder (updated to use call $+4 by vlad902)
-#
-###
-class XorDword < Rex::Encoder::Xor::Dword
-  module Backend
-    def _prepend
-      # set the counter to the rounded up number of dwords to decode
-      Rex::Arch::X86.set(
-        Rex::Arch::X86::ECX,
-        (encoded.length - 1 >> 2) + 1,
-        badchars
-      ) +
-      "\xe8\xff\xff\xff" +                # call $+4
-      "\xff\xc0" +                        # inc eax
-      "\x5e" +                            # pop esi
-      "\x81\x76\x0e" + key +              # xor_xor: xor [esi + 0x0e], $xorkey
-      "\x83\xee\xfc" +                    # sub esi, -4
-      "\xe2\xf4"                          # loop xor_xor
-    end
-  end
-
-  include Backend
-end
-
-end end

lib/rex/encoders/xor_dword_additive.rb

@@ -1,53 +0,0 @@
-# -*- coding: binary -*-
-
-require 'rex/encoder/xor/dword_additive'
-
-##
-#
-# Jmp/Call Dword Additive Feedback Encoder
-# Author: skape
-# Arch:   x86
-#
-##
-module Rex
-module Encoders
-
-class XorDwordAdditive < Rex::Encoder::Xor::DwordAdditive
-  module Backend
-
-    def _unencoded_transform(data)
-      # check for any dword aligned zeros that would falsely terminate the decoder
-      idx = 0
-      while true
-        idx = data.index("\x00\x00\x00\x00", idx)
-        break if !idx
-        if idx & 3 == 0
-          raise RuntimeError, "Unencoded data cannot have a dword aligned 0 dword!", caller()
-        end
-        idx += 1
-      end
-
-      # pad to a dword boundary and append null dword for termination
-      data = data + ("\x00" * ((4 - data.length & 3) & 3)) + "\x00\x00\x00\x00"
-    end
-
-    def _prepend
-      "\xfc"                + # cld
-      "\xbb" + key          + # mov ebx, key
-      "\xeb\x0c"            + # jmp short 0x14
-      "\x5e"                + # pop esi
-      "\x56"                + # push esi
-      "\x31\x1e"            + # xor [esi], ebx
-      "\xad"                + # lodsd
-      "\x01\xc3"            + # add ebx, eax
-      "\x85\xc0"            + # test eax, eax
-      "\x75\xf7"            + # jnz 0xa
-      "\xc3"                + # ret
-      "\xe8\xef\xff\xff\xff"  # call 0x8
-    end
-  end
-
-  include Backend
-end
-
-end end