class Rex::PeScan::Scanner::PopPopRetScanner

Public Instance Methods

config(param) click to toggle source
# File lib/rex/pescan/scanner.rb, line 161
def config(param)
  pops = _build_byte_list(0x58, (0 .. 7).to_a - [4]) # we don't want pop esp's...
  self.regex = Regexp.new("[#{pops}][#{pops}](\xc3|\xc2..)", nil, 'n')
end
scan_section(section, param={}) click to toggle source
# File lib/rex/pescan/scanner.rb, line 166
def scan_section(section, param={})

  index = 0

  hits  = [ ]

  while index < section.size && (index = section.index(regex, index)) != nil
    rva     = section.offset_to_rva(index)
    message = ''

    pops = section.read(index, 2)
    reg1 = Rex::Arch::X86.reg_name32(pops[0,1].unpack("C*")[0] & 0x7)
    reg2 = Rex::Arch::X86.reg_name32(pops[1,1].unpack("C*")[0] & 0x7)

    message = "pop #{reg1}; pop #{reg2}; "

    retsize = _ret_size(section, index+2)
    message += _parse_ret(section.read(index+2, retsize))

    index += 2 + retsize

    hits << [ rva, message ]
  end

  return hits
end