GTP Echo Scanner - Metasploit


This page contains detailed information about how to use the auxiliary/scanner/gprs/gtp_echo metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

Table Of Contents
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Module Overview

Name: GTP Echo Scanner
Module: auxiliary/scanner/gprs/gtp_echo
Source code: modules/auxiliary/scanner/gprs/gtp_echo.rb
Disclosure date: -
Last modification time: 2019-04-26 17:45:27 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 2152
List of CVEs: -

This module sends UDP GTP (GTP-U) echo requests to the target RHOSTS and reports on which ones respond, thus identifying General Packet Radio Service (GPRS) servers. This module does not support scanning with SCTP.

Module Ranking and Traits

Module Ranking:

  • normal: The exploit is otherwise reliable, but depends on a specific version and can't (or doesn't) reliably autodetect. More information about ranking can be found here.

Basic Usage

This module is a scanner module, and is capable of testing against multiple hosts.

msf > use auxiliary/scanner/gprs/gtp_echo
msf auxiliary(gtp_echo) > show options
    ... show and set options ...
msf auxiliary(gtp_echo) > set RHOSTS ip-range
msf auxiliary(gtp_echo) > exploit

Other examples of setting the RHOSTS option:

Example 1:

msf auxiliary(gtp_echo) > set RHOSTS 192.168.1.3-192.168.1.200

Example 2:

msf auxiliary(gtp_echo) > set RHOSTS 192.168.1.1/24

Example 3:

msf auxiliary(gtp_echo) > set RHOSTS file:/tmp/ip_list.txt

Required Options

  • RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'

Knowledge Base

This module provides a port of Daniel Mende's (released under the BSD license) gtp-scan.py utility. It brings the ability to scan for GPRS servers to Metasploit via sending GTP-U v1 and v2 echo requests.

Vulnerable Application

Open-source GGSN implementations can be used as a target for this module as well as commercial GPRS gear. For information on one project suitable as a target, see OsmoGGSN.

Options

The RPORT option

This option can be changed to target GTP-U (2152) or GTP-C (2123), which both use the same packet type for echo probing.

Scenarios

metasploit-framework (S:0 J:1) auxiliary(scanner/gprs/gtp_echo) > set RHOSTS 192.168.28.200-192.168.28.208
RHOSTS => 192.168.28.200-192.168.28.208
metasploit-framework (S:0 J:1) auxiliary(scanner/gprs/gtp_echo) > run

[*] [2019.04.22-16:38:27] Sending probes to 192.168.28.200->192.168.28.208 (9 hosts)
[+] [2019.04.22-16:38:42] GTP v1 echo response received from: 192.168.28.200:2152
[+] [2019.04.22-16:38:43] GTP v1 echo response received from: 192.168.28.201:2152
[+] [2019.04.22-16:38:43] GTP v1 echo response received from: 192.168.28.207:2152
[+] [2019.04.22-16:38:43] GTP v1 echo response received from: 192.168.28.208:2152
[*] [2019.04.22-16:38:43] Scanned 9 of 9 hosts (100% complete)
[*] Auxiliary module execution completed
metasploit-framework (S:0 J:1) auxiliary(scanner/gprs/gtp_echo) >

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Msfconsole Usage

Here is how the scanner/gprs/gtp_echo auxiliary module looks in the msfconsole:

msf6 > use auxiliary/scanner/gprs/gtp_echo

msf6 auxiliary(scanner/gprs/gtp_echo) > show info

       Name: GTP Echo Scanner
     Module: auxiliary/scanner/gprs/gtp_echo
    License: Metasploit Framework License (BSD)
       Rank: Normal

Provided by:
  Daniel Mende
  Spencer McIntyre

Check supported:
  No

Basic options:
  Name       Current Setting  Required  Description
  ----       ---------------  --------  -----------
  BATCHSIZE  256              yes       The number of hosts to probe in each set
  RHOSTS                      yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RPORT      2152             yes       The target port (UDP)
  THREADS    10               yes       The number of concurrent threads
  VERSION    1                yes       The GTP version to use (Accepted: 1, 2)

Description:
  This module sends UDP GTP (GTP-U) echo requests to the target RHOSTS 
  and reports on which ones respond, thus identifying General Packet 
  Radio Service (GPRS) servers. This module does not support scanning 
  with SCTP.

References:
  https://insinuator.net/tag/gtp/
  https://www.etsi.org/deliver/etsi_ts/129200_129299/129281/08.00.00_60/ts_129281v080000p.pdf

Module Options

This is a complete list of options available in the scanner/gprs/gtp_echo auxiliary module:

msf6 auxiliary(scanner/gprs/gtp_echo) > show options

Module options (auxiliary/scanner/gprs/gtp_echo):

   Name       Current Setting  Required  Description
   ----       ---------------  --------  -----------
   BATCHSIZE  256              yes       The number of hosts to probe in each set
   RHOSTS                      yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT      2152             yes       The target port (UDP)
   THREADS    10               yes       The number of concurrent threads
   VERSION    1                yes       The GTP version to use (Accepted: 1, 2)

Advanced Options

Here is a complete list of advanced options supported by the scanner/gprs/gtp_echo auxiliary module:

msf6 auxiliary(scanner/gprs/gtp_echo) > show advanced

Module advanced options (auxiliary/scanner/gprs/gtp_echo):

   Name                   Current Setting  Required  Description
   ----                   ---------------  --------  -----------
   CHOST                                   no        The local client address
   CPORT                                   no        The local client port
   ScannerMaxResends      10               yes       The maximum times to resend a packet when out of buffers
   ScannerRecvInterval    30               yes       The maximum numbers of sends before entering the processing loop
   ScannerRecvQueueLimit  100              yes       The maximum queue size before breaking out of the processing loop
   ScannerRecvWindow      15               yes       The number of seconds to wait post-scan to catch leftover replies
   ShowProgress           true             yes       Display progress messages during a scan
   ShowProgressPercent    10               yes       The interval in percent that progress should be shown
   VERBOSE                false            no        Enable detailed status messages
   WORKSPACE                               no        Specify the workspace for this module

Auxiliary Actions

This is a list of all auxiliary actions that the scanner/gprs/gtp_echo module can do:

msf6 auxiliary(scanner/gprs/gtp_echo) > show actions

Auxiliary actions:

   Name  Description
   ----  -----------

Evasion Options

Here is the full list of possible evasion options supported by the scanner/gprs/gtp_echo auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 auxiliary(scanner/gprs/gtp_echo) > show evasion

Module evasion options:

   Name  Current Setting  Required  Description
   ----  ---------------  --------  -----------

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References

See Also

Check also the following modules related to this module:

Authors

  • Daniel Mende
  • Spencer McIntyre

Version

This page has been produced using Metasploit Framework version 6.1.27-dev. For more modules, visit the Metasploit Module Library.

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