35 lines
958 B
Ruby
35 lines
958 B
Ruby
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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Encoder
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Rank = GreatRanking
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def initialize
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super(
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'Name' => 'Ruby Base64 Encoder',
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'Description' => %q{
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This encoder returns a base64 string encapsulated in
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eval(%(base64 encoded string).unpack(%(m0)).first).
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},
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'Author' => 'Robin Stenvi <robin.stenvi[at]gmail.com>',
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'License' => BSD_LICENSE,
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'Arch' => ARCH_RUBY)
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end
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def encode_block(state, buf)
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%w{( ) . % e v a l u n p c k m 0 f i r s t}.each do |c|
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raise BadcharError if state.badchars.include?(c)
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end
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b64 = Rex::Text.encode_base64(buf)
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state.badchars.each_byte do |byte|
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raise BadcharError if b64.include?(byte.chr)
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end
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return "eval(%(" + b64 + ").unpack(%(m0)).first)"
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end
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end
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