HD Moore
e02eb0d2eb
Fixed multiple CPU spinning bugs in the alpha2 encoders Fixed SiteReference to expose site type and value git-svn-id: file:///home/svn/incoming/trunk@3401 4d416f70-5f16-0410-b530-b9f4589650da
113 lines
3.5 KiB
Ruby
113 lines
3.5 KiB
Ruby
#!/usr/bin/env ruby
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require 'rex/encoder/alpha2/generic'
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module Rex
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module Encoder
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module Alpha2
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class UnicodeMixed < Generic
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def self.gen_base_set(max)
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Rex::Text.shuffle_a(
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[* ( (0..(max-1)).map { |i| i *= 0x10 } ) ]
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)
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end
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def self.gen_second(block, base)
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# unicode uses additive encoding
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(block - base)
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end
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def self.gen_decoder_prefix(reg, offset)
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if (offset > 14)
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raise "Critical: Offset is greater than 14"
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end
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# offset untested for unicode :(
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nop = 'CP' * offset
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dec = 'IA' * (14 - offset) + nop # dec ecx,,, push ecx, pop edx
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regprefix = { # nops ignored below
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'EAX' => 'PPYA' + dec, # push eax, pop ecx
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'ECX' => dec + "4444", # dec ecx
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'EDX' => 'RRYA' + dec, # push edx, pop ecx
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'EBX' => 'SSYA' + dec, # push ebx, pop ecx
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'ESP' => 'TUYA' + dec, # push esp, pop ecx
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'EBP' => 'UUYA' + dec, # push ebp, pop ecx
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'ESI' => 'VVYA' + dec, # push esi, pop ecx
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'EDI' => 'WWYA' + dec, # push edi, pop edi
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}
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return regprefix[reg]
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end
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def self.gen_decoder(reg, offset)
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decoder =
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gen_decoder_prefix(reg, offset) +
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"j" + # push 0
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"XA" + # pop eax, NOP
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"QA" + # push ecx, NOP
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"DA" + # inc esp, NOP
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"ZA" + # pop edx, NOP
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"BA" + # inc edx, NOP
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"RA" + # push edx, NOP
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"LA" + # dec esp, NOP
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"YA" + # pop ecx, NOP
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"IA" + # dec ecx, NOP
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"QA" + # push ecx, NOP
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"IA" + # dec ecx, NOP
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"QA" + # push ecx, NOP
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"IA" + # dec ecx, NOP
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"hAAA" + # push 00410041, NOP
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"Z" + # pop edx
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"1A" + # add [ecx], dh NOP
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"IA" + # dec ecx, NOP
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"IA" + # dec ecx, NOP
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"J" + # dec edx
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"1" + # add [ecx], dh
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"1A" + # add [ecx], dh NOP
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"IA" + # dec ecx, NOP
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"IA" + # dec ecx, NOP
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"BA" + # inc edx, NOP
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"BA" + # inc edx, NOP
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"B" + # inc edx
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"Q" + # add [ecx], dl
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"I" + # dec ecx
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"1A" + # add [ecx], dh NOP
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"I" + # dec ecx
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"Q" + # add [ecx], dl
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"IA" + # dec ecx, NOP
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"I" + # dec ecx
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"Q" + # add [ecx], dh
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"I" + # dec ecx
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"1" + # add [ecx], dh
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"1" + # add [ecx], dh
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"1A" + # add [ecx], dh NOP
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"IA" + # dec ecx, NOP
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"J" + # dec edx
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"Q" + # add [ecx], dl
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"YA" + # pop ecx, NOP
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"Z" + # pop edx
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"B" + # add [edx], al
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"A" + # inc ecx <-------
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"B" + # add [edx], al |
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"A" + # inc ecx |
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"B" + # add [edx], al |
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"A" + # inc ecx |
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"B" + # add [edx], al |
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"A" + # inc ecx |
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"B" + # add [edx], al |
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"kM" + # imul eax, [eax], 10 * |
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"A" + # add [edx], al |
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"G" + # inc edi |
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"B" + # add [edx], al |
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"9" + # cmp [eax], eax |
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"u" + # jnz ------------------
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"4JB"
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return decoder
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end
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end end end end
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