metasploit-framework/modules/encoders/cmd/generic_sh.rb

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require 'msf/core'
module Msf
module Encoders
module Cmd
class GenericSh < Msf::Encoder
def initialize
super(
'Name' => 'Generic Shell Variable Substitution Command Encoder',
'Version' => '$Revision$',
'Description' => %q{
This encoder uses standard Bourne shell variable substitution
tricks to avoid commonly restricted characters.
},
'Author' => 'hdm',
'Arch' => ARCH_CMD)
end
#
# Encodes the payload
#
def encode_block(state, buf)
# Remove spaces from the command string
if (state.badchars.include?(" "))
buf.gsub!(/\s/, '${IFS}')
end
return buf
end
end
end end end