The problem is the exe doesn't use many functions, mainly just createInstance or getInstance functions.
This seems like compiler generated stuff.
So I can't really see how the ARC management code is called.

Please upload sample files.

wrong forum

I always provide my information as a binary template, not only because you can use it with 010 Editor but also cause it is imho very easy to read and to understand (at least if you know a little bit C) http://www.cplusplus.com/doc/tutorial/structures.html Here's the tutorial (should be version 4): h...

I'd "translate" this info into the following 010 binary template:

No the data is not compressed, They just use custom formats.

Anyone got experience with that?
viewtopic.php?f=10&p=24425#p24425

However, the best way to deal with arc archives is to write a program for the system.dll. All functions to modify ARC archives are available in there. Well, it's harder than I thought. Got to figure out all the class hierarchy relations. namespace lexis { namespace system { class TE_DLL_API IArchiv...

They are compressed with an unknown compression algorithm. I already reversed a decompression routine used in DK2's archive files -> http://forum.xentax.com/viewtopic.php?f=21&t=2855 But this seems to be yet another technique. There's a topic about that in the graphics section: http://forum.xent...

atomic wrote:Typical external directory based storage idx stores filenames data in eea file, both attached.

So, what do you already have?

Well the data is completely encrypted. I managed to decrypt everything. It is a simple xor algorithm. The directory can be decrypted with the global xorValue (data is treated as dwords, see the first file as an example, the last 3 bytes aren't encrypted there) Each file is encrypted using its own xo...

Well if it's a different format, open another thread and upload some sample files, e.g. to xirror.com or xlice.net

A hex editor, that's why I said "manually" i.e. by hand.
I use 010 Editor, the code I posted above is a 010 binary template.