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- .:::. ·::::. ·:::: Proudly Presents
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- ·::::. .:::. ·:::::·
- ·::::::::::. ·:· PPDecrypt v1.02
- . ·:::· ·::::. (With the *FULL SOURCE-CODE* supplied)
- .:::. · .::::·
- ·::::. ·:::· A 'Crypto·Analyser' for decryption of
- ·::::. .:. · PowerPacker Password Encrypted Executables
- ·::::.::::·
- ·:::::· Copyright LSd © 1994. All Rights Are Reserved.
- ·:· Developed & Written By 2-Cool/LSd!
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- About this Program
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- This program is one of the PowerPacker followers worst nightmares!
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- It fully cracks the Password Encryption that PowerPacker applies to its files
- packed with the 'Encrypt' option, and it does this in minutes (sometimes even
- seconds!) not months or years! It achieves this amazing speed by analysing
- the Password encrypted file and doing some 'crypto-analysis' on the encrypted,
- packed data.
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- Even though Nico did not store the users 'Decryption' Password in the file I
- still managed to discover a way to obtain it in a very quick way using crypto
- analysis techniques. If you think this is an easy program to develop try it
- yourself 1st before looking at the source to this program to see how I did
- it!
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- It uses 2 Passes, the First Pass (the quickest) scans and obtains 3/4 of the
- original password and the 2nd Pass grabs the last quarter giving the full
- decryption key away thus allowing the program to be fully cracked and if
- desired unpacked back to its original state!
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- Important Usage Information
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- When this program is used on a Password Protected PowerPacker executable it
- will first obtain the original password, then decrypt the data. Once this is
- done it re-encrypts the data with the password 'lsd' in lowercase. The main
- reasoning behind this is so that the file can be 'decompressed' back to its
- original state using PowerPacker! The only other difference it applies is
- that the standard 'password' prompting code is bypassed and the program will
- auto-decrypt itself without any need for a password when executed!
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- This basically means you can get away without having to unpack the file with
- PowerPacker because the program acts as if its just PowerPacked with no
- password. However, you may still wish to unpack the code back to its original
- AmigaDOS Executable state and hence this is where PowerPacker comes in; Don`t
- forget when PowerPacker prompts you for a decryption password its 'lsd'
- (make sure you type it in LOWERCASE!)
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- Sometimes its necessary for the program to go into 'deep-scan' mode, when this
- occures it may take a few minutes more depending on the data type, compression
- mode, original password key, etc, but usually no more than 5 minutes even on
- very large executables over 500k etc.
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- Please note this version of PPDecrypt does not even attempt to do PowerPacked
- datafiles so people who have packed all there confidential information using
- the 'PPData' mode are safe for now, that is until I decided to release my
- PPDecrypt v1.03...hahaha... Seriously though, I recommend you most DEFINATELY
- re-encrypt your private stuff using PGP (using at LEAST v2.6 because older
- versions had a bug in the prime number random key generation routines and
- could betry a flaw in the key therby allowing 'crypto-analysis' to possibly
- have some fruitful results) anyway whatever you do, don`t use PowerPacker`s
- encryption modes.. they take seconds to crack.. not years, and by encrypting
- your data it gives you a false sense of security... Be Warned!
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- Compatibility Issues
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- This program has been tested on an A1200 only, I really could not be bothered
- to even attempt to use cache flushing and all the other bullshit required for
- M68030+ computers bcos 1) I don`t have anything here powerful enough to test
- it on and 2) because this is only meant to be a one off used utility possibly
- only used a few times by a few people (Possibly FAST?? hahahahaha) and 3)
- This was written in quicky in a few hours to serve the purpose of decrypting
- a program I pulled from the boards claiming to be a Satellite decoder only
- to find it was a fake after decrypting it!! ARrrrrrg...
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- Anyway to make it work on MC68030+ you have three choices; either try turning
- off caches, using an A1200`020 or add "_LVOCacheClearU" calls to the code
- after decrunching ,etc. (the assembly source-code is supplied in the original
- archive so you can use and abuse it to your hearts desire..)
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- I don`t make any promises on the reliability on this util, infact I wasn`t
- even going to release it.. but I felt, ah well what the hell, Its only a
- small util (only 4kbytes).. If I`ve already written it everyone else may
- as well have the benefit of it before I bin it in some obscure nested
- directory on my HD forever -)..
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- Oh and by the way it needs OS2.x and the 'asl.library'...
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- L8rs...
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- End.
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