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I was searching a lot of time for definition of the mdb (Access) database structure, but I haven't found anything about password recovery.
I know that Access 2000 mdb file has sth like pages, 4kB for every page, every page has a type and the first page is a 'Database definition page' containing (probably) a encrypted database password.
There is a lot of software able to read MS Access db password, so I think it is not secret where the password is stored.
Where/how can the Access password be found?
p.campbell
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daftudaftu
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3 Answers
Jet 3: Counter strike portable no download. The database password, when set, is stored as plain text in the MDB file header.
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Jet 4: The database password, when set, is obfuscated with a simple XOR pattern algorithm based on the file creation date/time (stored inside the file) which is then stored in the MDB file header.
Jet 3 AND 4: The MDB file header itself is further obfuscated with an XOR pattern – although its a constant XOR stream this time.
ACCDB Files: The password is no longer stored as obfuscated plain text in the file header. Instead, a hash is used to check that the user has entered the valid password. The hash is generated from a combination of RC4 and SHA-1 algorithms.
JohnFxJohnFx
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My issue was ULS restricting access to the .mdb.
This codeproject link allowed me to read the database in .NET: http://www.codeproject.com/Articles/283626/MsAccess-MdbTools-with-MFC-and-NET
Tim I haven't got it working on the web yet, right now I'm just trying to get all the parsing correct. Is it a script of some sort or are you using calculated fields?If I was doing this on the desktop I would have a script that takes the whole set of data and for each field I want to fill find the data and convert it into the data type of that field. Tim here's what I'm doing:I have a memo field that takes the following barcode data, and parses it out using calculated fields -AAMVADL00290197DLDAQS-542-738-870-099DAASMITH,RICHARD,JOHN,JRDAG26 SAMANTHA CTDAITAKOMA PARKDAJMDDAK20912DARCDASDATDAU600DAW167DBA20110124DBB19820124DBC1DBD20051126DBHNEach field is delimited by the first three charcters. The 'DBB' string is the person's DOB, which in this case is.Presently I'm using the following expression to parse out the date string:EXTRACTSTRING(MEMO,'DBB','DB')This gives me '19820124' as a character field, which I call 'DBBDOB.' Then what is your parsing process. Aamva drivers license barcode.
user326608user326608
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According to the webpage mentioned below, the tools don't actually look up a password from the MDB file but bombard the database with a list of possible passwords until successful.
Quote from the webpage:
These software employ brute force attack technique to recover the lost password accurately and precisely. They maintain a dynamic dictionary, which stores all the recovered passwords. They recover Access password by searching this dictionary and then applying the brute force technique. This helps to considerably reduce the password recovery time.
S.L. Barth
Access Vba Password Recovery
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Mark3308Mark3308
![]() Access Database Password Crackerprotected by Community♦Jun 14 '13 at 12:01
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