+++ /dev/null
-#!/bin/bash
-
-# ANNA - Anna is Not Nothingness Anymore
-#
-# (c) Copyright 2005-2014 Eduardo Ramos Testillano & Francisco Ruiz Rayo
-#
-# http://redmine.teslayout.com/projects/anna-suite
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-# * Neither the name of the copyright holder nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#
-# Authors: eduardo.ramos.testillano@gmail.com
-# cisco.tierra@gmail.com
-
-
-#############
-# VARIABLES #
-#############
-tmpdir=$(mktemp -d)
-
-#############
-# FUNCTIONS #
-#############
-
-usage () {
- echo "Usage: $0 <pcap_file> [results_dir]"
- echo
- echo " pcap_file: pcap formatted file to be processed."
- echo " results_dir: directory where results are stored."
- echo " By default, pcap file dirname is used."
- echo
- echo " The utility, dumps the extracted hexadecimal content"
- echo " and useful information as timestamps, source and"
- echo " destination:"
- echo " <results_dir>/<frame sequence>.hex"
- echo " <results_dir>/<frame sequence>.metadata"
- echo
- _exit
-}
-
-_exit () {
- echo
- echo -e $1
- echo
-
- # Cleanup
- rm -rf $tmpdir
-
- rc=1
- [ -n "$2" ] && rc=$2
- exit $rc
-}
-
-
-#############
-# EXECUTION #
-#############
-
-echo
-echo "============================================"
-echo "Diameter buffer extractor from PCAP raw file"
-echo "============================================"
-echo
-
-# Usage:
-[ "$1" = "" ] && usage
-
-# Pcap file:
-PCAP_FILE=$1
-[ ! -f $PCAP_FILE ] && _exit "Cannot found provided pcap file '$1' !!"
-
-# Optional result dir:
-RESULTS_DIR=`dirname $PCAP_FILE`
-[ "$2" != "" ] && RESULTS_DIR=$2
-[ ! -d $RESULTS_DIR ] && _exit "The results directory '$RESULTS_DIR' must exists !!"
-
-# Get the frames with diameter content (take care about '-2' two-pass option and don't add it, because we need to get reassembled parts in their corresponding frames):
-# Fields needed (we won't need diameter.hopbyhopid & diameter.endtoendid to verify diameter message as hint patterns; length management will be enough):
-FIELDS_DIAMETER="-e diameter.cmd.code -e diameter.flags.request -e diameter.applicationId -e diameter.hopbyhopid -e diameter.endtoendid -e diameter.length"
-FIELDS="-e frame.number -e frame.time_epoch -e ip.src_host -e ip.dst_host $FIELDS_DIAMETER -e tcp.len -e frame.protocols -e tcp.segment"
-tshark -E separator="|" -r $PCAP_FILE -N mntC -Tfields $FIELDS 2>/dev/null | grep -i diameter > $tmpdir/diameter_frames
-# Example output:
-# /length\
-# frame timestamp src dst code R App-ID HopByHop EndToEnd DIAM TCP protocol segments
-# 1|1427215933.697904000|gt_traf|vcbavipt|272|1|16777238|0x0004e6e6|0x000bd986|432|432|eth:ip:tcp:diameter:diameter:diameter3gpp|
-# 3|1427215934.449523000|vcbavipt|gt_traf|272|0|16777238|0x0004e6e6|0x000bd986|292|292|eth:ip:tcp:diameter:diameter:diameter3gpp|
-# 5|1427215934.456160000|gt_traf|vcbavipt|||||||1400|eth:ip:tcp:diameter|
-# 6|1427215934.456204000|gt_traf|vcbavipt|265|1|16777236|0x000c73c3|0x0004cee4|1972|572|eth:ip:tcp:diameter:diameter:diameter3gpp|5,6
-# 8|1427215935.123559000|vcbavipt|gt_traf|265|0|16777236|0x000c73c3|0x0004cee4|248|248|eth:ip:tcp:diameter:diameter:diameter3gpp|
-all_frames=( $(cat $tmpdir/diameter_frames | cut -d\| -f1) )
-needs_join=( $(cat $tmpdir/diameter_frames | cut -d\| -f13) )
-main_frames=( $(cat $tmpdir/diameter_frames | awk -F\| '{ if ($11 != "") print $1 }') )
-
-# Reassemble procedure (using frame 1 as example):
-# (for non segmented frames, it is enough with tcp or diameter length within the frame content itself)
-# 1) Get the TCP length: 432 bytes. 432*2 = 864 characters per byte in hexadecimal string format
-# 2) Get the frame length: `wc -c $tmpdir/block.$frame` => 997
-# 3) Get 864 from the tail: `cat $tmpdir/block.$frame | cut -c133
-
-# Dump the hex blocks for all the diameter frames:
-cat $PCAP_FILE | rawshark -s -r - -d proto:diameter -F data 2>/dev/null > $tmpdir/all_hex_data
-for frame in ${all_frames[@]}; do
- grep "^$frame " $tmpdir/all_hex_data | cut -d\" -f2 | sed 's/://g' > $tmpdir/block.$frame
- frame_info=$(grep "^${frame}|" $tmpdir/diameter_frames)
-
- # Get the diameter part:
- tcp_len=$(echo $frame_info | cut -d\| -f11)
- frm_len=$(wc -c $tmpdir/block.$frame | awk '{ print $1 }')
- cut_len=$((frm_len-2*tcp_len))
- cat $tmpdir/block.$frame | cut -c${cut_len}- > $RESULTS_DIR/$frame.hex
- echo -n "Created $RESULTS_DIR/$frame.hex"
-
- # Metadata:
- ts=$(echo $frame_info | cut -d\| -f2)
- date=$(date -d @$ts)
- src=$(echo $frame_info | cut -d\| -f3)
- dst=$(echo $frame_info | cut -d\| -f4)
- code=$(echo $frame_info | cut -d\| -f5)
- isreq=$(echo $frame_info | cut -d\| -f6)
- appid=$(echo $frame_info | cut -d\| -f7)
- hbh=$(echo $frame_info | cut -d\| -f8)
- e2e=$(echo $frame_info | cut -d\| -f9)
- # To decimal:
- hbh=$(printf "%d\n" $hbh)
- e2e=$(printf "%d\n" $e2e)
- echo "date=$date" > $RESULTS_DIR/$frame.metadata
- echo "timestamp=$ts" >> $RESULTS_DIR/$frame.metadata
- echo "src=$src" >> $RESULTS_DIR/$frame.metadata
- echo "dst=$dst" >> $RESULTS_DIR/$frame.metadata
- echo "code=$code" >> $RESULTS_DIR/$frame.metadata
- echo "isrequest=$isreq" >> $RESULTS_DIR/$frame.metadata
- echo "applicationid=$appid" >> $RESULTS_DIR/$frame.metadata
- #echo "sequence=${hbh}.${e2e}" >> $RESULTS_DIR/$frame.metadata
-# echo "hopbyhop=$hbh" >> $RESULTS_DIR/$frame.metadata
-# echo "endtoend=$e2e" >> $RESULTS_DIR/$frame.metadata
-
- echo " and $RESULTS_DIR/$frame.metadata"
-done
-
-# Join frames which need to be reassembled:
-for group in ${needs_join[@]}; do
- echo "Grouping frames $group ..."
- group_array=( $(echo $group | sed 's/,/ /g') )
- for frame in ${group_array[@]}; do
- cat $RESULTS_DIR/$frame.hex >> $tmpdir/diam.$group
- done
- cat $tmpdir/diam.$group | tr -d '\n' > $RESULTS_DIR/$frame.hex
-done
-
-# Delete superfluous metadata:
-echo "Deleting superfluous buffers & metadata ..."
-segments=( $(cat $tmpdir/diameter_frames | awk -F\| '{ if ($10 == "") print $1 }') )
-for s in ${segments[@]}; do rm $RESULTS_DIR/$s.*; done
-
-
-_exit "Done!" 0
-
projects / anna.git / blobdiff