jvoisin
89 lines
2.4 KiB
Ruby
89 lines
2.4 KiB
Ruby
# -*- coding: binary -*-
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module Msf
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class Post
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module Linux
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module Compile
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include ::Msf::Post::Common
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include ::Msf::Post::File
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include ::Msf::Post::Unix
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def initialize(info = {})
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super
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register_options( [
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OptEnum.new('COMPILE', [true, 'Compile on target', 'Auto', ['Auto', 'True', 'False']]),
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OptEnum.new('COMPILER', [true, 'Compiler to use on target', 'Auto', ['Auto', 'gcc', 'clang']]),
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], self.class)
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end
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def get_compiler
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if has_gcc?
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return 'gcc'
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elsif has_clang?
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return 'clang'
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else
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return nil
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end
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end
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def live_compile?
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return false unless %w{ Auto True }.include?(datastore['COMPILE'])
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if datastore['COMPILER'] == 'gcc' && has_gcc?
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vprint_good 'gcc is installed'
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return true
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elsif datastore['COMPILER'] == 'clang' && has_clang?
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vprint_good 'clang is installed'
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return true
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elsif datastore['COMPILER'] == 'Auto' && get_compiler.present?
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return true
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end
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unless datastore['COMPILE'] == 'Auto'
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fail_with Module::Failure::BadConfig, "#{datastore['COMPILER']} is not installed. Set COMPILE False to upload a pre-compiled executable."
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end
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false
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end
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def upload_and_compile(path, data, compiler_args='')
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write_file "#{path}.c", strip_comments(data)
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compiler = datastore['COMPILER']
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if datastore['COMPILER'] == 'Auto'
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compiler = get_compiler
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fail_with(Module::Failure::BadConfig, "Unable to find a compiler on the remote target.") unless compiler.present?
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end
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compiler_cmd = "#{compiler} -o '#{path}' '#{path}.c'"
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if session.type == 'shell'
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compiler_cmd = "PATH=\"$PATH:/usr/bin/\" #{compiler_cmd}"
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end
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unless compiler_args.to_s.blank?
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compiler_cmd << " #{compiler_args}"
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end
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verification_token = Rex::Text.rand_text_alphanumeric(8)
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success = cmd_exec("#{compiler_cmd} && echo #{verification_token}")&.include?(verification_token)
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rm_f "#{path}.c"
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unless success
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message = "#{path}.c failed to compile."
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# don't mention the COMPILE option if it was deregistered
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message << ' Set COMPILE to False to upload a pre-compiled executable.' if options.include?('COMPILE')
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fail_with Module::Failure::BadConfig, message
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end
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chmod path
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end
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def strip_comments(c_code)
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c_code.gsub(%r{/\*.*?\*/}m, '').gsub(%r{^\s*//.*$}, '')
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end
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end # Compile
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end # Linux
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end # Post
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end # Msf
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