114 lines
3.2 KiB
Ruby
114 lines
3.2 KiB
Ruby
# -*- coding: binary -*-
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require 'msf/core'
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module Msf::Payload::Java
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#
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# Used by stages; all java stages need to define +@stage_class_files+ as an
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# array of .class files located in data/java/
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#
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# The staging protocol expects any number of class files, each prepended
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# with its length, and terminated with a 0:
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# [ 32-bit big endian length ][ first raw .class file]
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# ...
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# [ 32-bit big endian length ][ Nth raw .class file]
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# [ 32-bit null ]
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#
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def generate_stage
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stage = ''
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@stage_class_files.each do |path|
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fd = File.open(File.join( Msf::Config.data_directory, "java", path ), "rb")
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data = fd.read(fd.stat.size)
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fd.close
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stage << ([data.length].pack("N") + data)
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end
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stage << [0].pack("N")
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stage
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end
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#
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# Used by stagers to construct the payload jar file as a String
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#
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def generate
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generate_jar.pack
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end
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#
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# Used by stagers to create a jar file as a {Rex::Zip::Jar}. Stagers
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# define a list of class files in @class_files which are pulled from
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# {Msf::Config.data_directory}. The configuration file is created by
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# the payload's #config method.
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#
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# @option opts :main_class [String] the name of the Main-Class
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# attribute in the manifest. Defaults to "metasploit.Payload"
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# @option opts :random [Boolean] Set to `true` to randomize the
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# "metasploit" package name.
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# @return [Rex::Zip::Jar]
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def generate_jar(opts={})
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raise if not respond_to? :config
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# Allow changing the jar's Main Class in the manifest so wrappers
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# around metasploit.Payload will work.
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main_class = opts[:main_class] || "metasploit.Payload"
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paths = [
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[ "metasploit", "Payload.class" ],
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] + @class_files
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jar = Rex::Zip::Jar.new
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jar.add_sub("metasploit") if opts[:random]
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jar.add_file("metasploit.dat", config)
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jar.add_files(paths, File.join(Msf::Config.data_directory, "java"))
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jar.build_manifest(:main_class => main_class)
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jar
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end
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#
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# Like {#generate_jar}, this method is used by stagers to create a war file
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# as a Rex::Zip::Jar object.
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#
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# @param opts [Hash]
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# @option :app_name [String] Name of the \<servlet-name> attribute in the
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# web.xml. Defaults to random
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#
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def generate_war(opts={})
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raise if not respond_to? :config
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zip = Rex::Zip::Jar.new
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web_xml = %q{<?xml version="1.0"?>
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<!DOCTYPE web-app PUBLIC
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"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
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"http://java.sun.com/dtd/web-app_2_3.dtd">
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<web-app>
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<servlet>
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<servlet-name>NAME</servlet-name>
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<servlet-class>metasploit.PayloadServlet</servlet-class>
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</servlet>
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<servlet-mapping>
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<servlet-name>NAME</servlet-name>
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<url-pattern>/*</url-pattern>
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</servlet-mapping>
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</web-app>
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}
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app_name = opts[:app_name] || Rex::Text.rand_text_alpha_lower(rand(8)+8)
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web_xml.gsub!(/NAME/, app_name)
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paths = [
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[ "metasploit", "Payload.class" ],
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[ "metasploit", "PayloadServlet.class" ],
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] + @class_files
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zip.add_file('WEB-INF/', '')
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zip.add_file('WEB-INF/web.xml', web_xml)
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zip.add_file("WEB-INF/classes/", "")
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zip.add_files(paths, File.join(Msf::Config.data_directory, "java"), "WEB-INF/classes/")
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zip.add_file("WEB-INF/classes/metasploit.dat", config)
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zip
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end
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end
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