Class: Msf::OptInjectablePE

Inherits:
OptPath show all
Defined in:
lib/msf/core/payload/windows/pe_inject.rb

Instance Attribute Summary

Attributes inherited from OptBase

#advanced, #aliases, #conditions, #default, #desc, #enums, #evasion, #fallbacks, #max_length, #name, #owner, #regex, #required

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from OptPath

#check_memory_location, #normalize, #type, #validate_on_assignment?

Methods inherited from OptBase

#advanced?, #display_value, #empty_required_value?, #evasion?, #invalid_value_length?, #normalize, #required?, #type?, #validate_on_assignment?

Constructor Details

#initialize(*args, arch:, **kwargs) ⇒ OptInjectablePE

Returns a new instance of OptInjectablePE.



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# File 'lib/msf/core/payload/windows/pe_inject.rb', line 6

def initialize(*args, arch:, **kwargs)
  @arch = arch
  super(*args, **kwargs)
end

Class Method Details

.assert_compatible(pe, arch) ⇒ Object 



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# File 'lib/msf/core/payload/windows/pe_inject.rb', line 11

def self.assert_compatible(pe, arch)
  unless (arch == ARCH_X86 && pe.ptr_32?) || (arch == ARCH_X64 && pe.ptr_64?)
    raise Msf::ValidationError, "Selected PE file is not #{arch}"
  end

  # TODO: Add reflective CLR loading support
  unless pe.hdr.opt['DataDirectory'][14].v['Size'] == 0
    raise Msf::ValidationError, 'PE files with CLR are not currently supported'
  end

  unless pe.hdr.opt['DataDirectory'][5].v['Size'] != 0
    raise Msf::ValidationError, 'PE file is missing relocation data'
  end

  unless pe.hdr.opt['DataDirectory'][11].v['Size'] == 0
    raise Msf::ValidationError, 'PE file contains bounded imports'
  end

  unless pe.hdr.opt['DataDirectory'][9].v['Size'] == 0
    tls_offset = pe.rva_to_file_offset(pe.hdr.opt['DataDirectory'][9].v['VirtualAddress'])
    unless tls_offset.to_i == 0
      tls_callback_table_offset = ''
      if arch == ARCH_X86
        tls_callback_table_offset = pe.read(tls_offset + 4, 4)
      else
        tls_callback_table_offset = pe.read(tls_offset + 12, 12)
      end
      unless tls_callback_table_offset.to_i == 0
        unless pe.read(tls_callback_table_offset, 4).to_i == 0
          raise Msf::ValidationError, 'PE file contains TLS callbacks'
        end
      end
    end
  end
end

Instance Method Details

#valid?(value, check_empty: nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/msf/core/payload/windows/pe_inject.rb', line 47

def valid?(value, check_empty: nil)
  return false unless super
  return false unless value && File.file?(File.expand_path(value)) # no memory: locations

  begin
    self.class.assert_compatible(Rex::PeParsey::Pe.new_from_file(value, true), @arch)
  rescue Msf::ValidationError
    return false
  end

  true
end