MMT-Security

This repository contains the following folders:

• src : C code of mmt-security
• rules: set of official XML rules. An encoded version (*.so) of these rules will be distributed with mmt-sec when using make deb. All rules (official and for testing purposes) are stored in rules/properties_all
• check: sample pcap files and expected results to validate mmt-security
• doc: documentation
• test: diversity of testing code

The repository contains mmt-security toolset:

• compile_rule: encode .xml rules into a shared library (file .so)
• rule_info: get information of one or all encoded rules
• mmt_sec_standalone: use mmt-security to analyse realtime traffic or pcap file
• mmt_sec_server: analyse meta-data sent by mmt-probe

Build

Pre-requires

Suppose on your machine, you have:

• libxml2-dev, libpcap-dev, libconfuse-dev : sudo apt-get install libxml2-dev libpcap-dev libconfuse-dev

• Optional: hiredis

git clone https://github.com/redis/hiredis.git
cd hiredis
make
sudo make install
ldconfig

• mmt-dpi

• source code of mmt-security

git clone https://github.com/Montimage/mmt-security.git

Clean

cd mmt-security

• Do make clean to clean compiled objects of mmt-security
• Do make clean-all to clean all compiled objects of mmt-security and the ones being generated from mmt-sdk. Thus do this when mmt-sdk has been updated.

Compile

• compile MMT-Security on its local directory: make

• compile sample rules existing in rules folder: make sample_rules

• enable some modules use: make [MODULE_NAME=1]+. Currently MODULE_NAME is one of the followings:

  • REDIS: this module allows to output to redis. Consequently hiredis library must be installed.
  • UPDATE_RULES: this module allows to add or remove rules at runtime. This is enabled by default. To disable this, e.g., in the case we do not need this feature: MODULE_NAME=0

• compile mmt-security to get .deb file in order to re-distribute its binary: make deb
  You will get a .deb file, e.g., mmt-security_1.0.1_8d5d7ea_Linux_x86_64.deb, containing everything mmt-security needs in order to be able to execute on a fresh machine.
  To install this deb file on a new debian-based machine, use: sudo dpkg -i file_name.deb

• install mmt-security on the current machine: make install

• debug MMT-Security: make DEBUG=1

• if you want to check MMT-Security using Valgrind DRD or Helgrind, you should do make DEBUG=1 VALGRIND=1. The option VALGRIND=1 adds some instruction allowing Valgrind bypass atomic operations that usually causes false positive errors in Valgrind.

Install directory

By default, MMT-Security will be installed on /opt/mmt/security. We can change the directory by giving giving a new directory name to INSTALL_DIR parameter when doing make and make install. For example:

make INSTALL_DIR=/home/tata/security
make install INSTALL_DIR=/home/tata/security

Execution

MMT-Security binary files can be obtained by compiling its source code or installing its distribution file (*.deb).

compile_rule

This application parses rules in .xml file, then compile to a plugin .so file.

#to generate .so file
./compile_rule rules/40.TCP_SYN_scan.so rules/40.TCP_SYN_scan.xml 
#to generate code c (for debug)
./compile_rule rules/40.TCP_SYN_scan.c rules/40.TCP_SYN_scan.xml -c

To compile all rules existing in the folder rules, use the following command:

make sample_rules

rule_info

This application prints information of rules encoded in a binary file (.so).

#print information of all available plugins
./rule_info
#print information of rules encoded in `rules/40.TCP_SYN_scan.so`
./rule_info rules/40.TCP_SYN_scan.so

mmt_sec_standalone

This application can analyze

• either real-time traffic by monitoring a NIC,
• or traffic saved in a pcap file. The verdicts will be printed to the current screen.

./mmt_sec_standalone [<options>]
Option:
   -t <trace file>: Gives the trace file to analyse.
   -i <interface> : Gives the interface name for live traffic analysis.
   -c <string>    : Gives the range of logical cores to run on, e.g., "1,3-8,16"
   -x <string>    : Gives the range of rules id to be excluded, e.g., "99,107-1010".
   -m <string>    : Attributes special rules to special threads using format (lcore:range) e.g., "(1:1-8,10-13)(2:50)(4:1007-1010)".
   -f <string>    : Output results to file, e.g., "/home/tata/:5" => output to folder /home/tata and each file contains reports during 5 seconds 
   -r <string>    : Output results to redis, e.g., "localhost:6379"
   -g             : Ignore the rest of a flow when an alert was detetected on the flow.
   -v             : Verbose.
   -l             : Prints the available rules then exit.
   -h             : Prints this help.
   
#online analysis on eth0
./mmt_sec_standalone -i eth0
#to see all parameters, run ./mmt_sec_standalone -h
#verify a pcap file
./mmt_sec_standalone -t check/pcap/16.two_successive_SYN.pcap 

mmt_sec_server

This application receives meta-data, calling messages, from mmt-probe via internet or Unix sockets and then analyse them.

./mmt_sec_server -h
MMT-Security version 1.1.2 (14bade8 - Apr 24 2017 18:00:35)
./mmt_sec_server [<option>]
Option:
   -p <number/string> : If p is a number, it indicates port number of internet domain socket otherwise it indicates name of unix domain socket. Default: 5000
   -n <number> : Number of threads per process. Default = 1
   -c <string> : Gives the range of logical cores to run on, e.g., "1,3-8,16"
   -x <string> : Gives the range of rules id to be excluded from verification, e.g., "1,3-8,16"
   -m <string> : Attributes special rules to special threads e.g., "(1:10-13)(2:50)(4:1007-1010)"
   -f <string> : Output results to file, e.g., "/home/tata/:5" => output to folder /home/tata and each file contains reports during 5 seconds 
   -r <string> : Output results to redis, e.g., "localhost:6379"
   -v          : Verbose.
   -l          : Prints the available rules then exit.
   -h          : Prints this help.

Auto testing

After modified code, you should run make check to validate the modifications. Use make check VAL=1 to check memory leak using valgrind (thus valgrind need to be installed before).

These commands will do the followings:

• run mmt_sec_standalone to check all properties in rules against the pcap files in check/pcap/

• compare the alerts generated by each run with the expected ones in check/expect/

The log of each run can be found in /tmp/

Documentation

doc