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, #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.



6
7
8
9
# 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



11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
# 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)


47
48
49
50
51
52
53
54
55
56
57
58
# File 'lib/msf/core/payload/windows/pe_inject.rb', line 47

def valid?(value, check_empty: nil)
  return false unless super
  return false unless File.exist?(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