package Parse::Nessus::NBE;
use strict;
use vars qw/ $VERSION @ISA @EXPORT_OK %EXPORT_TAGS /;
require Exporter;
@ISA = qw/ Exporter /;
@EXPORT_OK =
qw/ nbanners nports nplugin nwebdirs nnfs nos nsnmp nstatos nstatservices nstatvulns /;
%EXPORT_TAGS = (all => [qw/ nbanners nports nplugin nwebdirs nnfs nos nsnmp nstatos nstatservices nstatvulns /] );
$VERSION = '1.1';
use constant WEBDIR => 11032; # nessus plugin id for web directories discovered
use constant NFS => 10437; # nessus plugin id for nfs shares discovered
use constant NMAP1 => 10336; # nessus plugin id for Nmap OS guess
use constant NMAP2 => 11268; # nessus plugin id for Nmap OS guess
use constant QUESO => 10337; # nessus plugin id for QueSO OS guess
sub nbanners {
my (@ndata) = @_;
my (@banners);
foreach my $nbanner (@ndata) {
if ( $nbanner =~ /emote(.*)server (banner|type)/ ) {
my @result = split ( /\|/, $nbanner );
$result[6] =~ s/^(.*)\:\\n|Solution (.*)$|\\r|\\n//g;
push @banners, join "|", $result[2], $result[6];
}
}
return @banners;
}
sub nports {
my (@ndata) = @_;
my (@ports);
my $nport = pop (@ndata);
foreach my $ndata (@ndata) {
my @result = split ( /\|/, $ndata );
if ( $result[4] ) {
next;
}
elsif ( $result[3] =~ /\($nport\// ) {
push @ports, join "|", $result[2], $result[3];
}
}
return @ports;
}
sub nplugin {
my (@ndata) = @_;
my (@plugins);
my $nplugin = pop (@ndata);
foreach my $ndata (@ndata) {
my @result = split ( /\|/, $ndata );
if ( !$result[4] ) {
next;
}
elsif ( $result[4] =~ /$nplugin/ ) {
$result[6] =~ s/\\n//;
push @plugins, join "|", $result[2], $result[3], $result[6];
}
}
return @plugins;
}
sub nwebdirs {
my (@ndata) = @_;
my (@webdirs);
my $webdirplugin = WEBDIR;
foreach my $ndata (@ndata) {
my @result = split ( /\|/, $ndata );
if ( !$result[4] ) {
next;
}
elsif ( $result[4] =~ /$webdirplugin/ ) {
$result[6] =~ s/(^(.*)discovered\:|\\n|,)//g;
$result[6] =~ s/The following(.*)authentication:/\|/;
push @webdirs, join "|", $result[2], $result[3], $result[6];
}
}
return @webdirs;
}
sub nnfs {
my (@ndata) = @_;
my (@nfs);
my $nfsplugin = NFS;
foreach my $ndata (@ndata) {
my @result = split ( /\|/, $ndata );
if ( !$result[4] ) {
next;
}
elsif ( $result[4] =~ /$nfsplugin/ ) {
$result[6] =~ s/^(.*) \: \\n|\\n\\n(.*)$//g;
$result[6] =~ s/\\n/,/g;
push @nfs, join "|", $result[2], $result[3], $result[6];
}
}
return @nfs;
}
sub nos {
my (@ndata) = @_;
my (@os);
foreach my $ndata (@ndata) {
if ( $ndata =~
m/10336\|Security Note|11268\|Security Note|10337\|Security Note/ )
{
my @result = split ( /\|/, $ndata );
if ( $result[4] eq NMAP1 ) {
$result[6] =~ s/(Nmap(.*)running |(\;|\\n))//g;
push @os, join "|", $result[2], $result[6];
}
elsif ( $result[4] eq NMAP2 ) {
$result[6] =~ s/(Remote OS guess : |\\n\\n(.*)$)//g;
push @os, join "|", $result[2], $result[6];
}
elsif ( $result[4] eq QUESO ) {
$result[6] =~
s/(QueSO has(.*)\\n\*|\\n\\n\\nCVE (.*)$| \(by (.*)$)//g;
push @os, join "|", $result[2], $result[6];
}
}
}
return @os;
}
sub nsnmp {
my (@ndata) = @_;
my (@snmp);
foreach my $ndata (@ndata) {
if ( $ndata =~ m/10264\|Security Hole\|/ ) {
my @result = split ( /\|/, $ndata );
$result[6] =~ s/\\nSNMP Agent(.*?)community name: //;
$result[6] =~
s/(\\nSNMP Agent (.*?)community name: |\\nCVE(.*)$)/ /g;
push @snmp, join "|", $result[2], $result[6];
}
}
return @snmp;
}
sub nstatos {
my (@ndata) = @_;
my (@allos);
foreach my $ndata (@ndata) {
if ( $ndata =~
m/10336\|Security Note|11268\|Security Note|10337\|Security Note/ )
{
my @result = split ( /\|/, $ndata );
chomp $result[6];
if ( $result[4] eq NMAP1 ) {
$result[6] =~ s/(Nmap(.*)running |(\;|\\n))//g;
push @allos, $result[6];
}
elsif ( $result[4] eq NMAP2 ) {
$result[6] =~ s/(Remote OS guess : |\\n\\n(.*)$)//g;
push @allos, $result[6];
}
elsif ( $result[4] eq QUESO ) {
$result[6] =~
s/(QueSO has(.*)\\n\*|\\n\\n\\nCVE (.*)$| \(by (.*)$)//g;
push @allos, $result[6];
}
}
}
my %count;
map { $count{$_}++ } @allos;
my @rearranged = sort { $count{$b} <=> $count{$a} } keys %count;
my @graphos;
foreach (@rearranged) {
push @graphos, join "|", $_, "$count{$_}\n";
}
return @graphos;
}
sub nstatservices {
my (@ndata) = @_;
my (@allports);
foreach my $ndata (@ndata) {
my @result = split ( /\|/, $ndata );
if ( $result[4] ) {
next;
}
else {
chomp $result[3];
push @allports, $result[3];
}
}
my %count;
map { $count{$_}++ } @allports;
my @rearranged = sort { $count{$b} <=> $count{$a} } keys %count;
my @graphservices;
foreach (@rearranged) {
push @graphservices, join "|", $_, "$count{$_}\n";
}
return @graphservices;
}
sub nstatvulns {
my (@ndata) = @_;
my (@allvuln);
my $nsevval = pop (@ndata);
my $nseverity;
if ($nsevval == 1) {
$nseverity = "Hole";
}
elsif ($nsevval == 2) {
$nseverity = "Warning";
}
elsif ($nsevval == 3) {
$nseverity = "Note";
}
foreach my $ndata (@ndata) {
my @result = split ( /\|/, $ndata );
if (! $result[5]) {
next;
}
elsif ( $result[5] =~ /Security $nseverity/ ) {
push @allvuln, $result[4];
}
}
my %count;
map { $count{$_}++ } @allvuln;
my @rearranged = sort { $count{$b} <=> $count{$a} } keys %count;
my @graphvuln;
foreach (@rearranged) {
push @graphvuln, join "|", $_, "$count{$_}\n";
}
return @graphvuln;
}
1;
__END__
=pod
=head1 NAME
Parse::Nessus::NBE - use to extract specific data from Nessus NBE files
=head1 SYNOPSIS
use Parse::Nessus::NBE;
function(@nessusdata);
function(@nessusdata,$query);
=head1 DESCRIPTION
This module is designed to extract information from Nessus NBE files. Functions have been designed to return certain sets of data, such as service banners and OS versions. Other functions have been provided that will return more specific information, such as all IPs listening on a given port or all IPs associated with a specified plugin id.
=head1 EXAMPLES
To obtain a list of banners
my @banners = nbanners(@nessusdata);
print @banners;
# returns
IP|service banner
# example
192.168.0.5|CompaqHTTPServer/2.1
192.168.0.11|Apache/1.3.26 (Unix) mod_perl/1.24
192.168.0.30|Microsoft-IIS/5.0
192.168.0.31|220 cpan01 FTP server (SunOS 5.8) ready.
192.168.0.51|NetWare HTTP Stack
192.168.0.99|220 Service ready for new user.
...
To query by port
my $port = 80;
my @ports = nports(@nessusdata,$port);
print @ports;
# returns
IP|specified port
# example
192.168.0.5|ssh (22/tcp)
192.168.0.6|ssh (22/tcp)
192.168.0.8|ssh (22/tcp)
192.168.0.23|ssh (22/tcp)
192.168.0.89|ssh (22/tcp)
...
To obtain a list of web directories
my @webdirs = nwebdirs(@nessusdata);
print @webdirs;
# returns
IP|web port|web dir(s)|web dir(s) requiring authentication
# example
192.168.0.21|http (80/tcp)|/css /design /downloads /images /js
192.168.0.43|http (80/tcp)|/images /public|/console
192.168.0.47|https (443/tcp)|/files /html /images /js /jsp
192.168.0.101|https (443/tcp)|/application /common /images /report|/printers
192.168.0.110|http (80/tcp)|/admin
...
To obtain a list of nfs shares
my @nfs = nnfs(@nessusdata);
print @nfs;
# returns
IP|nfs port|nfs share(s)
# example
192.168.0.11|nfs (2049/tcp)|/apps (mountable by everyone)
192.168.0.31|nfs (2049/tcp)|/cdrom (mountable by everyone)
192.168.0.28|nfs (2049/tcp)|/data (mountable by everyone)
192.168.0.45|nfs (2049/tcp)|You are running a superfluous NFS daemon...
192.168.0.108|nfs (2049/tcp)|You are running a superfluous NFS daemon...
...
To obtain a OS listing
my @os = nos(@nessusdata);
print @os;
# returns
IP|OS version
# example
192.168.0.1|IOS 12.1.5-12.2(6a), Cisco IOS 12.1(5)-12.2(7a)
192.168.0.154|Linux 2.1.19 - 2.2.20
192.168.0.111|HP Advancestack Etherswitch 224T or 210
192.168.0.92|AIX 4.2-4.3.3
192.168.0.10|NT Server 4.0 SP4-SP5 running Checkpoint Firewall-1
...
To obtain a listing of SNMP community strings
my @snmp = nsnmp(@nessusdata);
print @snmp;
# returns
IP|SNMP community string(s)
# example
192.168.0.1|private public
192.168.0.111|public
192.168.0.121|private public
192.168.0.128|private public
192.168.0.145|public
...
To query by plugin id
my $plugin = 10667;
my @plugin = nplugin(@nessusdata,$plugin);
print @plugin;
# returns
IP|port|plugin data
# example
192.168.0.202|https (443/tcp)|...OpenSSL which is;older than 0.9.6e...
192.168.0.222|https (443/tcp)|...OpenSSL which is;older than 0.9.6e...
192.168.0.235|https (443/tcp)|...OpenSSL which is;older than 0.9.6e...
192.168.0.236|https (443/tcp)|...OpenSSL which is;older than 0.9.6e...
192.168.0.237|https (443/tcp)|...OpenSSL which is;older than 0.9.6e...
...
To obtain a OS count, useful for graphing
my @countos = nstatos(nessusdata);
print @countos;
# returns
OS version|count
# example
Windows NT4 or 95/98/98SE|17
Windows 2000 Advanced Server SP3|14
TOPS-20 Monitor 7(21733),KL-10 (DEC 2065)|11
Cisco router running IOS 12.1.5-12.2.13a|11
PS2 Linux 1.0|9
Linux 2.4.17 on HP 9000 s700|7
Cisco 2620 running IOS 12.1(6)|6
Windows 2000 Server SP3|5
Windows NT4 Workstation SP6a|4
Nortel/Alteon ACE Director 3 Version 6.0.42-B|4
To obtain a service count, useful for graphing
my @countservices = nstatservices(nessusdata);
print @countservices;
# returns
service port|count
#example
http (80/tcp)|69
telnet (23/tcp)|48
netbios-ssn (139/tcp)|48
https (443/tcp)|46
loc-srv (135/tcp)|42
ftp (21/tcp)|39
smtp (25/tcp)|34
pcanywheredata (5631/tcp)|30
ssh (22/tcp)|25
sun-answerbook (8888/tcp)|22
To obtain a vulnerability count, useful for graphing
# note: options are as follows:
# 1 returns high severity vulnerabilties
# 2 returns medium severity vulnerabilities
# 3 returns low level security notes
my @countvulns = nstatvulns(@nessusdata,1);
print @countvulns;
#returns
plugin id|count
#example
11875|40
11412|17
10116|12
11856|11
10932|10
10937|7
11793|6
=head1 AUTHOR
David J Kyger <dave@norootsquash.net>
=head1 Thanks
Gwendolynn ferch Elydyr <gwen@reptiles.org>
=head1 COPYRIGHT
Copyright 2003 David J Kyger. All rights reserved.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
=cut