Ubuntu Manpage: xprobe2 - A Remote active operating system fingerprinting tool.

NAME

       xprobe2 - A Remote active operating system fingerprinting tool.

SYNOPSIS

       xprobe2 [ -v ] [ -r ] [ -p proto:portnum:state ] [ -c configfile ] [ -o logfile ] [ -p
       port ] [ -t receive_timeout ] [ -m numberofmatches ] [ -D modnum ] [ -F ] [ -X ] [ -B ] [
       -A ] [ -T port spec ] [ -U port spec ] host

DESCRIPTION

       xprobe2  is  an  active  operating system fingerprinting tool with a different approach to
       operating system fingerprinting. xprobe2 relies on fuzzy signature matching, probabilistic
       guesses, multiple matches simultaneously, and a signature database.

       The  operation  of xprobe2 is described in a paper titled "xprobe2 - A ´Fuzzy´ Approach to
       Remote Active Operating System Fingerprinting", which is  available  from  http://www.sys-
       security.com/html/projects/X.html.

       As  xprobe2  uses  raw  sockets to send probes, you must have root privileges in order for
       xprobe2 to be able to use them.

OPTIONS

-v be verbose.

-r display route to target (traceroute-like output).

-c use configfile to read the configuration file, xprobe2.conf, from a non-default
location.

-D disable module number modnum.

-m set number of results to display to numofmatches.

-o use logfile to log everything (default output is stderr).

-p specify port number (portnum), protocol (proto) and it's state for xprobe2 to use
during rechability/fingerprinting tests of remote host. Possible values for proto
are tcp or udp, portnum can only take values from 1 to 65535, state can be
either closed (for tcp that means that remote host replies with RST packet, for
udp that means that remote host replies with ICMP Port Unreachable packet) or open
(for tcp that means that remote host replies with SYN ACK packet and for udp that
means that remote host doesn't send any packet back).

-t set receive timeout to receive_timeout in seconds (the default is set to 10
seconds).

-F generate signature for specified target (use -o to save fingerprint into file)

-X write XML output to logfile specified with -o

-B causes xprobe2 to be a bit more noisy, as -B makes TCP handshake module to try and
blindly guess an open TCP port on the target, by sending sequential probes to the
following well-known ports: 80, 443, 23, 21, 25, 22, 139, 445 and 6000 hoping to
get SYN ACK reply. If xprobe2 receives RST|ACK or SYN|ACK packets for a port in the
list above, it will be saved in the target port database to be later used by other
modules (i.e. RST module).

-T, -U enable built-in portscanning module, which will attempt to scan TCP and/or UDP
ports respectively, which were specified in port spec

-A enable experimental support for detection of transparent proxies and
firewalls/NIDSs spoofing RST packets in portscanning module. Option should be used
in conjunction with -T. All responses from target gathered during portscanning
process are divided in two classes (SYN|ACK and RST) and saved for analysis. During
analysis module will search for different packets, based on some of the fields of
TCP and IP headers, within the same class and if such packets are found, message
will be displayed showing different packets within the same class.

EXAMPLES

xprobe2 -v -D 1 -D 2 192.168.1.10

Will launch an OS fingerprinting attempt targeting 192.168.1.10. Modules 1 and 2,
which are reachability tests, will be disabled, so probes will be sent even if
target is down. Output will be verbose.

xprobe2 -v -p udp:53:closed 192.168.1.20

Will launch an OS fingerprint attempt targeting 192.168.1.20. The UDP destination
port is set to 53, and the output will be verbose.

xprobe2 -M 11 -p tcp:80:open 192.168.1.1

Will only enable TCP handshake module (number 11) to probe the target, very useful
when all ICMP traffic is filtered.

xprobe2 -B 192.168.1.1

Will cause TCP handshake module to try blindly guess open port on the target by
sequentially sending TCP packets to the most likely open ports (80, 443, 23, 21,
25, 22, 139, 445 and 6000).

xprobe2 -T 1-1024 127.0.0.1

Will enable portscanning module, which will scan TCP ports starting from 1 to 1024
on 127.0.0.1

xprobe2 -p tcp:139:open 192.168.1.2

If remote target has TCP port 139 open, the command line above will enable
application level SMB module (if remote target has TCP port 445 open, substitue 139
in the command line with 445).

xprobe2 -p udp:161:open 192.168.1.10

Will enable SNMPv2c application level module, which will try to retrieve sysDescr.0
OID using community strings taken from xprobe2.conf file.

NOTES

       xprobe2 fingerprints remote operating system by analyzing the replies from the target,  so
       to  get  the  most  out  of xprobe2 you need to supply xprobe2 with as much information as
       possible, in particular it is important to supply at least  one  open  TCP  port  and  one
       closed  UDP  port.  Open  TCP  port  can either be provided in command line (-p), obtained
       through built-in portscanner (-T) or -B option can be used to  cause  xprobe2  to  try  to
       blindly  guess  open  TCP  port. UDP port can be supplied via command line (-p) or through
       built-in portscanner (-U).

HISTORY

       xprobe has been developed in 2001 based  on research performed by  Ofir  Arkin  <ofir@sys-
       security.com>.  The  code  has  been officially released at the BlackHat Briefings in Las-
       Vegas in 2001. xprobe2 is a logical  evolution  of  xprobe  code.  Signature  based  fuzzy
       fingerprinting logic was embedded.

AUTHORS

       Fyodor  Yarochkin  <fyodor@o0o.nu>,  Ofir  Arkin <ofir@sys-security.com>, Meder Kydyraliev
       <meder@o0o.nu>

       (see also CREDITS in distro tarball).

AVAILABILITY

       The current version and relevant documentation is available from following url:
       https://sourceforge.net/projects/xprobe/

BUGS

       None known (please report).

                                                                                       XPROBE2(1)