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tools/exploit/nasm_shell.rb
62 строки
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bcoles
Rubocop: Resolve Rubocop Style/RedundantRegexpArgument violations
24 май 2025, 06:34
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24 май 2025, 06:34
5aa91bd
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#!/usr/bin/env ruby ## # This module requires Metasploit: https://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## # # This tool provides an easy way to see what opcodes are associated with # certain x86 instructions by making use of nasm if it is installed and # reachable through the PATH environment variable. # begin msfbase = __FILE__ while File.symlink?(msfbase) msfbase = File.expand_path(File.readlink(msfbase), File.dirname(msfbase)) end $:.unshift(File.expand_path(File.join(File.dirname(msfbase), '..', '..', 'lib'))) $:.unshift(ENV['MSF_LOCAL_LIB']) if ENV['MSF_LOCAL_LIB'] require 'msfenv' require 'rex' require 'readline' # Check to make sure nasm is installed and reachable through the user's PATH. begin Rex::Assembly::Nasm.check rescue RuntimeError puts "#{$!}" exit end bits = ARGV.length > 0 ? ARGV[0].to_i : 32 if ! [16, 32, 64].include?(bits) then puts "#{bits} bits not supported" exit 1 end # Start a pseudo shell and dispatch lines to be assembled and then # disassembled. history_file = File.join(Msf::Config.config_directory, 'nasm_history') shell = Rex::Ui::Text::PseudoShell.new("%bldnasm%clr", '>', history_file) shell.init_ui(Rex::Ui::Text::Input::Stdio.new, Rex::Ui::Text::Output::Stdio.new) shell.history_manager = Rex::Ui::Text::Shell::HistoryManager.new shell.run { |line| line.gsub!(/(\r|\n)/, '') line.gsub!("\\n", "\n") break if (line =~ /^(exit|quit)/i) begin puts(Rex::Assembly::Nasm.disassemble( Rex::Assembly::Nasm.assemble(line, bits), bits)) rescue RuntimeError puts "Error: #{$!}" end } rescue SignalException => e puts("Aborted! #{e}") end