Needing noob help 7z Archive
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I want to build a 7z password brute force cracker. The problem is I have an entire 20 GB worth of backed up data in a 7z file containers and Have failed to find any retail software solution. RAR looks like the only AES encrypted archive type being messed with... So now comes the problem that I dont know jack beans about building software as I am a System Admin and Not a Developer. So I purchased a copy of Visual Studio 2008 Standard for 50 bucks off ebay. I want to make the fastest bit per second app I can that's why I chose C/C++. I would also like it to be made Multi threaded as I hear that Multiple core processors can make great use of these type of apps.. Bear in mind that I have no training in writing code. But I do learn fast so any help wold be appreciated.. **Edit** PS It was locked with symbols in the password but it is not longer then 8 characters in length. Thanx in advanced DarC.
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I want to build a 7z password brute force cracker. The problem is I have an entire 20 GB worth of backed up data in a 7z file containers and Have failed to find any retail software solution. RAR looks like the only AES encrypted archive type being messed with... So now comes the problem that I dont know jack beans about building software as I am a System Admin and Not a Developer. So I purchased a copy of Visual Studio 2008 Standard for 50 bucks off ebay. I want to make the fastest bit per second app I can that's why I chose C/C++. I would also like it to be made Multi threaded as I hear that Multiple core processors can make great use of these type of apps.. Bear in mind that I have no training in writing code. But I do learn fast so any help wold be appreciated.. **Edit** PS It was locked with symbols in the password but it is not longer then 8 characters in length. Thanx in advanced DarC.
I was looking for a punch-line .. then figured you were serious. Ok, even if you went to http://www.7-zip.org/[^] downloaded the SDK, and we could show you how to use it, do you not realise you're going to grow very old before you can break the AES256 Bit encryption - you'd need serious computer power to do this brute force ... 'g'
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I want to build a 7z password brute force cracker. The problem is I have an entire 20 GB worth of backed up data in a 7z file containers and Have failed to find any retail software solution. RAR looks like the only AES encrypted archive type being messed with... So now comes the problem that I dont know jack beans about building software as I am a System Admin and Not a Developer. So I purchased a copy of Visual Studio 2008 Standard for 50 bucks off ebay. I want to make the fastest bit per second app I can that's why I chose C/C++. I would also like it to be made Multi threaded as I hear that Multiple core processors can make great use of these type of apps.. Bear in mind that I have no training in writing code. But I do learn fast so any help wold be appreciated.. **Edit** PS It was locked with symbols in the password but it is not longer then 8 characters in length. Thanx in advanced DarC.
Maybe this http://rarcrack.sourceforge.net/[^] could help. As far as coding is concerned 7z implements AES-256 Bit encryption which is very very hard to crack. Even password of length 8 could take months or even several years to crack considering that characters of password are known. Otherwise you might not even get to the desired password in your lifetime. For coding you may generate your own combination of password strings and test them for correct password calling functions of 7z sdk.... :)
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I was looking for a punch-line .. then figured you were serious. Ok, even if you went to http://www.7-zip.org/[^] downloaded the SDK, and we could show you how to use it, do you not realise you're going to grow very old before you can break the AES256 Bit encryption - you'd need serious computer power to do this brute force ... 'g'
I have a duel I7 Extreme with 16gb of ram on a NV Personal Super Computer. And I am looking to do it via cmd line because I will be using Server 2008 Core to break the password... So no external apps will be running at the time I run this... I did take a couple of classes in cryptology about 2 years ago so I know what I ask is an amazing concept for most to comprehend! ~DarC P.S. I have the SDK.
modified on Saturday, March 14, 2009 2:57 PM
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Maybe this http://rarcrack.sourceforge.net/[^] could help. As far as coding is concerned 7z implements AES-256 Bit encryption which is very very hard to crack. Even password of length 8 could take months or even several years to crack considering that characters of password are known. Otherwise you might not even get to the desired password in your lifetime. For coding you may generate your own combination of password strings and test them for correct password calling functions of 7z sdk.... :)
I know That's why I am enlisting the help of you guys... I have tried rarcrack on FreeBSD Command interface [No UI Logistics loaded] It completed a 10 password search @ just under a billion passwords per minute. With no result. I asked the person that had packed it at that point about what possible passwords he would use and to my dismay I found he used special symbols in some of his passwords as to make them stronger... So I am stuck looking for help else where... P.S. I do however know that from a Russian website that some people were able to yield incredible results using the Video cards of their particular PC's as auxiliary CPU power. I think they were able to do a fully successful crack of a 12 Char AES Password in about a month worth of processing time.
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I want to build a 7z password brute force cracker. The problem is I have an entire 20 GB worth of backed up data in a 7z file containers and Have failed to find any retail software solution. RAR looks like the only AES encrypted archive type being messed with... So now comes the problem that I dont know jack beans about building software as I am a System Admin and Not a Developer. So I purchased a copy of Visual Studio 2008 Standard for 50 bucks off ebay. I want to make the fastest bit per second app I can that's why I chose C/C++. I would also like it to be made Multi threaded as I hear that Multiple core processors can make great use of these type of apps.. Bear in mind that I have no training in writing code. But I do learn fast so any help wold be appreciated.. **Edit** PS It was locked with symbols in the password but it is not longer then 8 characters in length. Thanx in advanced DarC.
Get the command line version of 7z (from the site) and call it using a dictionary. You may be able to get a password guessing algorithm and dictionaries for other products like word and use that. (The program could actually be quite simple, using ShellExecuteEx() or CreateProcess() to spawn the executable; you monitor the process handle between launches. In theory you could launch several instances at a time, but 7z may lock the file.)
Anyone who thinks he has a better idea of what's good for people than people do is a swine. - P.J. O'Rourke