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                                  enumIAX 
             Dustin D. Trammell <dtrammell (at) tippingpoint.com>

==============================================================================

enumIAX is an Inter Asterisk Exchange protocol username brute-force
enumerator.

                             Modes of Operation
                             ==================

enumIAX may operate in two distinct modes; Sequential Username Guessing or
Dictionary Attack.

Sequential Username Guessing
------------------------------

In Sequential Username Guessing mode, the tool will auto-construct
usernames sequentially from a range of characters defined in the charmap.h
file.  By default, the character map should be the following characters:

  "0123456789abcdefghijklmnopqrstuvwxyz "

This character map should be able to guess any alpha-numerically constructed
username with or without space characters.  For a more exhaustive search,
expand the character map to include other character sets already defined in
charmap.h, or create your own entirely new and customized character map!
Remember however that the more characters you include in your character map,
the longer the session will take as you will be increasing the potential
passphrase "keyspace" exponentially.

NOTE: VoIP usernames, like email addresses, are usually case-insensitive.

Dictionary Attack
-----------------

enumIAX may also use usernames from a dictionary file rather than construct
usernames itself.  "Dict" files are generally just a long list of words or
phrases, one word per line.  If you already have a favorite Dict file, you
can use it here.

                           Building and Installing
                           =======================

enumIAX should build without issue on most unix-like platforms.

Once enumIAX is built, execute the following commands from the enumIAX
source directory to install the binaries to your system:

   make
   make install  

enumIAX will be installed /usr/local/bin for your use, however you will most
likely want to create and run enumIAX from a working directory where it can
save session state and result information.

                         Executing a enumIAX Session
                         ===========================

Executing enumIAX
-----------------

enumIAX has many command-line options to tweak it's behavior, however normal
execution can be accomplished with a command-line similar to the following:

   enumiax <target>

In the above example, <target> is the target hostname or IP address that you
want to enumerate.

Other command-line options you may include can be found with the "-h" command-
line option:

   enumiax -h

   Usage: enumiax [options] target
     options:
       -d <dict>   Dictionary attack using <dict> file
       -i <count>  Interval for auto-save (# of operations, default 1000)
       -m #        Minimum username length (in characters)
       -M #        Maximum username length (in characters)
       -r #        Rate-limit calls (in microseconds)
       -s <file>   Read session state from state file
       -v          Increase verbosity (repeat for additional verbosity)
       -V          Print version information and exit
       -h          Print help/usage information and exit

By default, enumIAX only prints it's title and version information, and any 
successfully found usernames.  These results are also appended to a results
file of the format <target>.results in the current working directory.  To
make enumIAX more verbose at runtime, use the "-v" command-line option,
which is repeatable for more verbosity.

Resuming a Previous Session
---------------------------

If your session was stopped prematurely, you can resume the session from it's
state file.  State files are saved at regular intervals as well as enumIAX
receiving most signals which would cause it to terminate.  You can resume a
previous session with commands similar to the following:

   enumiax -s <target>.state <target>

   enumiax -d <dictfile> -s <target>.state <target>

Rate-Limiting
-------------

By using the -r command-line option, you can rate-limit enumIAX to prevent
flooding of the server.  The default is 500000 microseconds, or a half
of a second.

If the server begins to send Lag Requests (LAGRQ packets), enumIAX will
automatically increase it's rate-limit value by 100000 microseconds to
compensate.  Conversely, inumIAX is always trying to speed up by decreasing
it's rate-limit value by 1000 microseconds per transaction.


                                   License
                                   =======

enumIAX is released under the GNU General Public License v.2, the text of
which can be found at the following URL:

	http://www.gnu.org/copyleft/gpl.html