Login or Register ::  Home  ::  Search  ::  Your Account  ::  Forums  ::   Waraxe Advisories  ::  Tools  :: April 30, 2024 Menu  Home  Logout  Discussions  Forums  Members List  IRC chat  Tools  Base64 coder  MD5 hash  CRC32 checksum  ROT13 coder  SHA-1 hash  URL-decoder  Sql Char Encoder  Affiliates  y3dips ITsec  Md5 Cracker  User Manuals  AlbumNow  Content  Content  Sections  FAQ  Top  Info  Feedback  Recommend Us  Search  Journal  Your Account User Info Welcome, Anonymous Nickname Password (Register) Membership: Latest: MichaelSnaRe New Today: 0 New Yesterday: 0 Overall: 9145 People Online: Visitors: 513 Members: 0 Total: 513 PacketStorm News ·301 Moved Permanently read more... IT Security and Insecurity Portal www.waraxe.us Forum Index -> Newbies corner -> Uploaded shell, but...    View previous topic :: View next topic  Uploaded shell, but... Posted: Wed Jul 23, 2008 9:59 pm chip Beginner   Joined: Jul 24, 2008 Posts: 4 Hey there. I'm checking some security vulnerabilities on an SMF 1.1.4 forum, which from what I know has a few notable holes allowing RFI and SQL Injection attacks. However, these attacks require register_globals to be ON, but on the target host, register_globals is OFF. So, I have a look around the forum to see anything interesting/vulnerable. Amazingly, the forum admin has allowed uploading of attachments OF ANY KIND, which means I can upload php files with ease. So far so good. Next, I upload a certain php shell! Normally, any uploaded attachments go to http://example.com/forum/attachments/ And, I know that the admin also has "encrypt filenames" disabled. Now all I need to do is go to: http://example.com/forum/attachments/shell.php and hopefully I can start using my shell... only to come across this: ------------------------ "Forbidden You don't have permission to access /forums/attachments/ on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request." ------------------------ Huh? Damn. I can't access the folder, so I can't access my shell anymore. Is there a workaround for this? Can I access my shell using another php file on the server? Any help or hints would be appreciated. (Note: clicking on the link from the post's attachment only downloads the shell without executing it.) Posted: Thu Jul 24, 2008 1:50 am gibbocool Advanced user   Joined: Jan 22, 2008 Posts: 208 hmm, try and upload shell.php%00 otherwise, you can try overwrite the .htaccess _________________ http://www.gibbocool.com Posted: Thu Jul 24, 2008 11:35 am chip Beginner   Joined: Jul 24, 2008 Posts: 4 gibbocool wrote: hmm, try and upload shell.php%00 otherwise, you can try overwrite the .htaccess Thank you for your post. Here's what happened: Uploading .htaccess didn't make any change to dir permission, I still got the 403 Forbidden error. Now for shell.php%00 I got this instead: ------------------------ Not Found The requested URL /forums/attachments/shell.php was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. ------------------------ EDIT: I tried the %00 in another SMF forum that I own with "encrypt filenames" disabled, also didn't work. Any other suggestions? Last edited by chip on Thu Jul 24, 2008 12:02 pm; edited 2 times in total Posted: Thu Jul 24, 2008 11:59 am gibbocool Advanced user   Joined: Jan 22, 2008 Posts: 208 I'm not too sure what's going on, perhaps some other members can elaborate. Have you tried uploading .html files or any other files to see if they are forbidden? _________________ http://www.gibbocool.com Posted: Thu Jul 24, 2008 12:19 pm chip Beginner   Joined: Jul 24, 2008 Posts: 4 Hmm ok. 1. You can upload any type of file you want. 2. The file goes to example.com/forums/attachments/ 3. But you can't directly go to /forums/attachments/ in the url because it is forbidden. To make it simple, it's the same thing as this: http://www.waraxe.us/admin/whatever.php uploading an .htacess didn't change anything, shell.php%00 didn't work Any other ideas? Posted: Thu Jul 24, 2008 2:06 pm pexli Valuable expert   Joined: May 24, 2007 Posts: 665 Location: Bulgaria You have access to admin panel? Posted: Thu Jul 24, 2008 2:15 pm chip Beginner   Joined: Jul 24, 2008 Posts: 4 koko wrote: You have access to admin panel? Nope, but you get the same 403 Error as in the SMF forum. Any way to get around this? Posted: Thu Jul 24, 2008 5:44 pm pexli Valuable expert   Joined: May 24, 2007 Posts: 665 Location: Bulgaria I think only if you have access to admin panel.Via admin panel you mai change the upload directory and try to upload shell. 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