Class: Rex::PeScan::Scanner::Generic

Inherits:
Object
  • Object
show all
Defined in:
lib/rex/pescan/scanner.rb

Direct Known Subclasses

JmpRegScanner, RegexScanner

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(pe) ⇒ Generic

Returns a new instance of Generic.



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# File 'lib/rex/pescan/scanner.rb', line 12

def initialize(pe)
  self.pe = pe
end

Instance Attribute Details

#pe ⇒ Object

Returns the value of attribute pe.



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# File 'lib/rex/pescan/scanner.rb', line 10

def pe
  @pe
end

#regex ⇒ Object

Returns the value of attribute regex.



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# File 'lib/rex/pescan/scanner.rb', line 10

def regex
  @regex
end

Instance Method Details

#config(param) ⇒ Object 



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# File 'lib/rex/pescan/scanner.rb', line 16

def config(param)
end

#scan(param) ⇒ Object 



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# File 'lib/rex/pescan/scanner.rb', line 19

def scan(param)
  config(param)

  $stdout.puts "[#{param['file']}]"
  pe.all_sections.each do |section|
    hits = scan_section(section, param)
    hits.each do |hit|
      vma  = pe.rva_to_vma(hit[0])

      next if (param['filteraddr'] and [vma].pack("V").reverse !~ /#{param['filteraddr']}/)

      msg  = hit[1].is_a?(Array) ? hit[1].join(" ") : hit[1]
      $stdout.puts pe.ptr_s(vma) + " " + msg
      if(param['disasm'])
        #puts [msg].pack('H*').inspect
        insns = []

        msg.gsub!("; ", "\n")
        if msg.include?("retn")
          msg.gsub!("retn", "ret")
        end
        #puts msg
        begin
          d2 = Metasm::Shellcode.assemble(Metasm::Ia32.new, msg).disassemble
        rescue Metasm::ParseError
          d2 = Metasm::Shellcode.disassemble(Metasm::Ia32.new, [msg].pack('H*'))
        end
        addr = 0
        while ((di = d2.disassemble_instruction(addr)))
          insns << di.instruction
          disasm = "0x%08x\t" % (vma + addr)
          disasm << di.instruction.to_s
          $stdout.puts disasm
          addr = di.next_addr
        end
#						::Rex::Assembly::Nasm.disassemble([msg].pack("H*")).split("\n").each do |line|
#							$stdout.puts "\tnasm: #{line.strip}"
        #end
      end
    end
  end
end

#scan_section(section, param = {}) ⇒ Object 



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# File 'lib/rex/pescan/scanner.rb', line 62

def scan_section(section, param={})
  []
end