Login or Register ::  Home  ::  Search  ::  Your Account  ::  Forums  ::   Waraxe Advisories  ::  Tools  :: April 19, 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: 582 Members: 0 Total: 582 PacketStorm News ·301 Moved Permanently read more... IT Security and Insecurity Portal www.waraxe.us Forum Index -> PhpBB -> A lot of the md5 are uncrackables!!!!    View previous topic :: View next topic  A lot of the md5 are uncrackables!!!! Posted: Tue Feb 28, 2006 3:34 pm thelma Regular user   Joined: Oct 18, 2005 Posts: 16 Do you know the why? Re: A lot of the md5 are uncrackables!!!! Posted: Tue Feb 28, 2006 4:05 pm waraxe Site admin   Joined: May 11, 2004 Posts: 2407 Location: Estonia, Tartu thelma wrote: Do you know the why? If 1)Password is long enough (12+ chars) 2) Has no meaning (not related to any wordlists) then bruteforce, wordlist guessing and rainbow cracking are useless. By the way, md5 hashing algorithm itself is vulnerable to collision generation, but at this moment i don't know any publicly available tools to implement this weakness in context of the phpbb password using scheme. Posted: Tue Feb 28, 2006 4:52 pm thelma Regular user   Joined: Oct 18, 2005 Posts: 16 The problem is that all the hashes of a determinate forum(Invision Power Board v2.0.3) are impossible to crack, I have everywhere tried, on all the site possible online... while with my forum I have not have problem to crack the md5.. my succesfull to crack them is the 70% Posted: Tue Feb 28, 2006 5:55 pm waraxe Site admin   Joined: May 11, 2004 Posts: 2407 Location: Estonia, Tartu thelma wrote: The problem is that all the hashes of a determinate forum(Invision Power Board v2.0.3) are impossible to crack, I have everywhere tried, on all the site possible online... while with my forum I have not have problem to crack the md5.. my succesfull to crack them is the 70% Code snippet from IPB 2.0.3 source code: Code: $salt     = $ibforums->converge->generate_password_salt(5); $passhash = $ibforums->converge->generate_compiled_passhash($salt, md5($in_password) ); So the answer is - IPB 2.0.3 is using salted hashes. Salting will make cracking process more difficult and time consuming ... Posted: Wed Mar 01, 2006 12:56 pm thelma Regular user   Joined: Oct 18, 2005 Posts: 16 ok,I have lost any hope!! thank you Posted: Sun Apr 02, 2006 5:17 pm Vixje Active user   Joined: Mar 25, 2006 Posts: 35 Hi waraxe. I still want to give it a go with a salted pw. I have a database of a 2.0.x forum, with the converged records inside. Could you give me a brief explanation, on how I could make a start on cracking such salts? Considering I do have the usernames, the hashes, and the salt-values. For example, is there a easy way (tool) where u can just insert the usercode+hash+salt and do a dictionary or bruteforce on it? Or do i first need to "unsalt" the hash to get the real md5 hash value? Posted: Wed Apr 12, 2006 10:13 pm Indiction Regular user   Joined: Apr 12, 2006 Posts: 11 Basically if there is a salt, you cannot remove it at the MD5 step. First you will have to know what the salt is. If the salt is say md(x+5), then you must first reverse the hash through bruteforcing or whatever. Then subtract the salt (which will give you the original cleartext). Thanks to the fact that if md5(x+c) = md5(y+c) (collision), all you need to do is reverse the mathematical operation on the salt. Unless its something like, say, modulus, in which case good luck . But one thing you can't do is reverse the salt when all you have is the hash. You must first reverse the hash. A lot of the md5 are uncrackables!!!!   www.waraxe.us Forum Index -> PhpBB You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum All times are GMT   Page 1 of 1   All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First  Select a forum Security Research by waraxe----------------General discussionHow to fixMetasploit related Hash cracking requests----------------MD5 hashesAll other hashesHash related information http://www.waraxe.us portal----------------SuggestionsCooperation proposals Security bugs and issues in general----------------Newbies cornerSql injectionCross-site scripting aka XSSRemote file inclusionFull path disclosureShell commands injectionPhishing and Social EngineeringAll other security holes Various software----------------PhpNukePostNukePhpBBXMB forumvBulletin BoardInvision Power Boarde107MamboJoomlaXOOPSM$ WindowsLinux worldAll other softwareCoppermine Photo Gallery Programming languages----------------PhpMySqlPerlJavaJavascriptC and C++Visual BasicBorland Delphi and PascalPythonHTML and XMLAssembler Reverse engineering----------------Newbies cornerDisassemblingPHP script decode requests Miscellaneous stuff----------------Future of the ITNanotechnologyFun cornerLinksTry2hack sitesProxy database Direct Downloads----------------ToolsTutorialsWordlists Recycle Bin----------------Removed messagesOutdated posts   Powered by phpBB © 2001-2008 phpBB Group

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