CoCalc provides the best real-time collaborative environment for Jupyter Notebooks, LaTeX documents, and SageMath, scalable from individual users to large groups and classes!

1
##
2
# This module requires Metasploit: https://metasploit.com/download
3
# Current source: https://github.com/rapid7/metasploit-framework
4
##
5

6
class MetasploitModule < Msf::Encoder
7

8
  # Set to ManualRanking because actually using this encoder will
9
  # certainly destroy any possibility of a successful shell.
10
  #
11
  Rank = ManualRanking
12

13
  def initialize
14
    super(
15
      'Name'             => 'The EICAR Encoder',
16
      'Description'      => %q{
17
        This encoder merely replaces the given payload with the EICAR test string.
18
        Note, this is sure to ruin your payload.
19

20
        Any content-aware firewall, proxy, IDS, or IPS that follows anti-virus
21
        standards should alert and do what it would normally do when malware is
22
        transmitted across the wire.
23
      },
24
      'Author'           => 'todb',
25
      'License'          => MSF_LICENSE,
26
      'Arch'             => ARCH_ALL,
27
      'EncoderType'      => Msf::Encoder::Type::Unspecified)
28

29
  end
30

31
  # Avoid stating the string directly, don't want to get caught by local
32
  # antivirus!
33
  def eicar_test_string
34
    obfus_eicar = ["x5o!p%@ap[4\\pzx54(p^)7cc)7}$eicar", "standard", "antivirus", "test", "file!$h+h*"]
35
    obfus_eicar.join("-").upcase
36
  end
37

38
  # TODO: add an option to merely prepend and not delete, using
39
  # prepend_buf. Now, technically, EICAR should be all by itself
40
  # and not part of a larger whole. Problem is, OptBool is
41
  # acting funny here as an encoder option.
42
  #
43
  def encode_block(state, buf)
44
    buf = eicar_test_string
45
  end
46
end
47

48