Create macho2app.rb

Author: cbrnrd

tools/exploit/macho2app.rb

@@ -0,0 +1,105 @@
+#!/usr/bin/env ruby
+#
+# $Id$
+#
+# This script converts a macho file to a macOS .app
+#
+# $Revision$
+#
+
+require 'optparse'
+
+msfbase = __FILE__
+while File.symlink?(msfbase)
+  msfbase = File.expand_path(File.readlink(msfbase), File.dirname(msfbase))
+end
+
+$:.unshift(File.expand_path(File.join(File.dirname(msfbase), '..', '..', 'lib')))
+require 'msfenv'
+
+$:.unshift(ENV['MSF_LOCAL_LIB']) if ENV['MSF_LOCAL_LIB']
+
+class MachoToApp
+
+  macho_path = nil
+  app_name = nil
+  
+  def get_opts
+
+    ARGV.options do |opt|
+      opt.separator ''
+
+      opt.on('-f', String, 'The macho file produced by msfvenom') do |x|
+        macho_path = x
+      end
+
+      opt.on('-o', String, 'The output app name (without .app)') do |x|
+        app_name = x 
+      end
+
+      opt.on_tail('-h', '--help', 'Show this message') do
+        $stderr.puts opt
+        exit
+      end
+
+      opt.parse!
+      
+    end    
+  end
+
+  def initialize
+    @args = get_opts
+  rescue OptionParser::MissingArgument => e 
+    $stderr.puts e.message
+    exit
+  end
+
+  def main
+    if @args.empty?
+      fail OptionParser::MissingArgument, 'No options set, try -h for usage'
+    elsif @args[0].nil?
+      fail OptionParser::MissingArgument, '-f is required'
+    elsif @args[1].nil?
+      fail OptionParser::MissingArgument, '-o is required'
+    end
+    orig_macho = File.expand_path(@args[0])
+    warn orig_macho
+    plist_outline = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>
+    <!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">
+    <plist version=\"1.0\">
+    <dict>
+    	<key>CFBundleName</key>
+      <string>#{@args[1]}</string>
+      <key>CFBundleVersion</key>
+      <string>1.0</string>
+      <key>CFBundlePackageType</key>
+      <string>APPL</string>
+      <key>CFBundleExecutable</key>
+      <string>#{@args[0]}</string>
+    </dict>
+    </plist>"
+
+    # A .app file is essentially a specialy treated directory on macOS,
+    # so we will treat it as such
+    system("chmod 777 #{@args[0]}")  # This is the only way macOS will execute the macho
+    Dir.mkdir("#{@args[1]}.app")
+    Dir.chdir("#{@args[1]}.app")
+    Dir.mkdir('Contents')
+    Dir.chdir('Contents')
+    Dir.mkdir('MacOS')
+    File.open('Info.plist', 'w') do |f|
+      f.write plist_outline
+    end
+    Dir.chdir('MacOS')
+    system("mv #{orig_macho.inspect} ./#{@args[0]}")
+    system("chmod 777 #{@args[0]}")
+    Dir.chdir('../../..')
+    puts "Final app produced: #{Dir.pwd}/#{@args[1]}.app"
+  end
+  
+end
+
+if __FILE__ == $PROGRAM_NAME
+  bin = MachoToApp.new
+  bin.main
+end