why not just using 7zip:
http://www.7-zip.org

it works even with some installers and obviously all the various gz, zip, rar and other compressed archives

QuickBMS and the Warhammer script:
http://aluigi.org/papers/bms/warhammer40000.bms

job for xbdecompress.exe (Xbox SDK)
when you see a file that starts with the bytes 0f f5 12 that one is the tool you need

I repeat: what's the name of game?

the file is simply xored with the following 4 bytes: 34 76 12 95 script for quickbms: filexor "0x34 0x76 0x12 0x95" get NAME basename get EXT extension string NAME += "_decrypted." string NAME += EXT get SIZE asize log NAME 0 SIZE it's probably a mesh file or similar stuff anyway...

the str files seem to contain raw audio at 32khz, 16bit stereo. it sounds a bit noisy so it's not to be excluded a light codec used on it (adpcm?) the rest seems almost like a midi and sound instruments, for sure an "original" solution. anyway there is for sure someone with more experience...

try this one with quickbms: # Amplitude # script for QuickBMS http://aluigi.org/papers.htm#quickbms get DUMMY long get FILES long math OFFSET = FILES math OFFSET *= 20 math OFFSET += 8 goto OFFSET get SIZE long math OFFSET += 4 log MEMORY_FILE OFFSET SIZE math OFFSET += SIZE goto OFFSET get ENTRIES ...

maybe upload only the first 10 megabytes.
but as it sounds it doesn't seem something on which I can do something

@SLIFallen
don't confuse the finding of the password located in the memory of the program that opens the archive with cracking an unknown passowrd.
they are 2 completely different things

I have just downloaded the game now and noticed it had a very very basic format so I wrote a quick script for it:

the password of the data.zip in "Akhra - The Treasures" is 2yKJ6KhRJKJ/18J5
found in less than one minute :)

The contents of this post was deleted because of possible forum rules violation.

as far as I have understood only the wav files are encrypted right?
so start uploading one of them (the smallest)

I have done a quick test and from my tests it looks everything correct.
probably you can't open them normally because they seem headerless, just the raw image data in them.
anyway the extraction is ok

script for QuickBMS : idstring HGPK get DUMMY long get FILES long for i = 0 < FILES get DUMMY byte get NAMESZ byte filexor 0xaa getdstring NAME NAMESZ filexor 0 get OFFSET long get SIZE long get DUMMY long get DUMMY byte filexor 0xaa log NAME OFFSET SIZE filexor 0 next i