Cheat Engine

Localhost · Posted: Sat Sep 27, 2008 7:24 pm Post subject: [BETA] New MD5 Decrypter!

PLEASE REPORT ALL UNKNOWN BUGS!

http://www.md5decrypter.org/

What is new from this one and the old one Localhost?
-- This one uses a new database system which is faster than MySQL and can hold much more without freaking out!

What can i do with this?
-- Say you go into your database ( and not one that you hacked into -cough- ) only to find all the passwords in "your" database are MD5 hashed... Just plop it into the form and TADA! It spits (hopefully) out the decrypted text.

But but but You can't decrypt MD5! It is a one way hash!
-- Yes, yes, i know that MD5 is a one way hash. This does not literally DECRYPT MD5, it matches with its counterpart in our database (if it is in there) and outputs it. Which sounds better: Decrypter or MD5 Matcher. Yeah.

--Known Bugs--
* 0 hashes in database
* Some of the links at the bottom dont work
* It looks ugly

--Fixed bugs--
* HTML cannot be injected
* Faster queries
* More welcoming look

--Whats next?--
* 7 billion hashes
* Login + multiple hash search
* about us
* entry fix

LolSalad · Posted: Sat Sep 27, 2008 8:42 pm Post subject: Re: [BETA] New MD5 Decrypter!

Localhost · Posted: Sat Sep 27, 2008 8:54 pm Post subject:

heh Thank you for finding that bug lolsalad.

HalfPrime · Posted: Sat Sep 27, 2008 9:42 pm Post subject:

You didn't copy the old DB to the new one?

--Pillboi-- · Posted: Sun Sep 28, 2008 7:03 am Post subject: Re: [BETA] New MD5 Decrypter!

Localhost · Posted: Sun Sep 28, 2008 7:04 am Post subject:

rapion124 · Posted: Sun Oct 05, 2008 10:14 am Post subject:

Just out of curiosity, what are the specs on the server you're running? You can just continuously have the server calculate MD5 hashes of all words up to a certain length.

By the way, 7 billion hashes isn't very large... It includes 1/11th of all 7 character words (36^7).

Also, there's the possibility of collision.

Burningmace · Posted: Sun Oct 05, 2008 6:42 pm Post subject:

I developed a system like this a while ago that had over 40 billion hashes for multiple algorithms (MD4, MD5, SHA1, SHA256, SHA384, SHA512, RIPEMD160). Unfortunately I've dropped the project for now due to hard drive failure Sad

I had the following database:
All 1-5 character a-Z 0-9 passwords.
Most 6 character a-Z 0-9 passwords (all a-z 0-9).
Over 100 million words derived from words in English, German, French, Spanish, Italian, Dutch and Finnish. Derivations include prepended/appended numbers and leet-style transformations.
Lots of random technical stuff - e.g. technical abbreviations, common words like root, sysop, p4ssw0rd, l337, h4x0r, etc.

Unfortunately my hard disk died and I lost the entire database. I'm working on setting up a dedicated machine to re-create this database, along with software to efficiently generate this database.

Specs on the system so far:
Core 2 Duo E8500
8GB DDR2
Four 1TB SATA-II drives RAID'ed.
Windows Server 2003 (64-bit)
MySQL (easy integration into PHP frontend, fast enough if I use InnoDB)

Best way to split the database down is as follows:
One schema per hash algorithm.
256 tables (suffix _00 to _ff) for each block of hashes. You can save 2 bytes per hash in the database by just dropping the first two characters and putting the hash in the appropriate table. If you then convert the hash to a byte array and then store that value in Base64, you cut the size of the database by approximately 31%.

The MySQL server should be configured to use massive amounts of memory for its key buffer - on a 4GB machine use 2.5GB+ if you're only doing LOAD DATA INFILE statements for a while.