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sigroon365, posted Fri Nov 28, 2014 6:30 am (2021)

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Hi, here is some original files and encrypted files.
https://www.mediafire.com/?8xzxiedgm6b6jmt It would be appreciate someone could decrypt it.
I think comparing BGM or ED6_LOGO might be help. And here is information.

"Hi, I checked the encrypted files, and I think they can be decrypted. The encrypting algorithm is actually quite simple. It reads 8 bytes from the original file, does some kind of binary operation on this field then writes it to the output.

For example, in the encoded file, 8 bytes of 0x0 always becomes 0xE25610A8CF5E9B4D, 0x2F5F5F5F5F5F5F5F2E5F5F5F00000000 (see the end of the dir file) always becomes 0x7C6E8C987BCD24611586F8FB36AB0249.

The problem is of course figuring out what happens with these 8 bytes. While the algorith looks simple, I'm not a cryptography expert, so it might be faster to search for somebody who knows what can be done with this. I tried writing a very simple bruteforce program, but it will take about 2302,74 years to finish (checking 2^64 numbers takes time).

There is also an interesting thing, the size of ed6_dt00.dat (encrypted) is not a multiple of 8, and there is a half-encoded (?) 4 bytes at the end. You can see the lots of encoded nulls before it too.

Well, maybe you can figure out something. Good luck! "

barti, posted Fri Nov 28, 2014 4:02 pm (2037)

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How did you get the encrypted files?
Does the game come with some kind of a launcher?

sigroon365, posted Fri Nov 28, 2014 4:18 pm (2038)

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barti wrote:

How did you get the encrypted files?
Does the game come with some kind of a launcher?

I received packed files from someone and I unpacked it then I got encrypted files.
It used launcher, however it doesn't service now. The game company became bankrupt.

Here is more information.

working directory: c:\program files\aruon\frog\game\ed6fc
executables:
- ed6_win.exe
- config.exe
type:
ed6_win.exe: wdp,type-1, frog
config.exe: wdp,type-2, frog
code: rT5EtsTFPHdblY PuVpvquFIc4mlZJl0HgP1/XHdR4XzVMmU0iNrJjwgI 7j7dIUUQz0AYqgcNQpVV40LLUfuBdG8sYNYUJRqP9RI8DB4kJSLMM7ch22F6A4D2GyETJPE4Az9OCmCfM3XZppI/v07Kmpbcqiq47mNh/qfSXAaiogivv fu0P6AZUVgEGAA==

I wonder what the code means.

barti, posted Fri Nov 28, 2014 4:29 pm (2039)

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Can you send the files from the launcher? It might be possible to find the encryption function in there.

sigroon365, posted Fri Nov 28, 2014 4:30 pm (2040)

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barti wrote:

Can you send the files from the launcher? It might be possible to find the encryption function in there.

I edited above reply.
OK. Actually, I don't have launcher now but I will find someone who might got it.

barti, posted Fri Nov 28, 2014 4:49 pm (2041)

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That code looks like a base64 encoded file. But after decoding, there's nothing readable inside:


I tried using this file as a key for encryption scan, but no correct files came out.

sigroon365, posted Sat Nov 29, 2014 7:46 am (2048)

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barti wrote:

That code looks like a base64 encoded file. But after decoding, there's nothing readable inside:


I tried using this file as a key for encryption scan, but no correct files came out.

I sent you some files and launcher. Check your massage, plz.

andrevictor18, posted Tue Oct 11, 2016 5:24 am (17951)

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Hi, I saw this topic and I think you can help me, There is a game that I want the Read the files, but it looks like it is encrypted, the game used to use json files with informations, but now it uses .z files and I can't open it.
json files:https://www.dropbox.com/sh/gbfelw0wz47w5br/AADZSudrFplaa1SWREg74p03a?dl=0
z files: https://www.dropbox.com/sh/ozoz4ocnjgtk ... PhOZa?dl=0

aluigi, posted Tue Oct 11, 2016 6:13 am (17954)

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@andrevictor18
Please do NOT go OT on other topics or open new topics:
viewtopic.php?f=9&t=3138

I have renamed this topic to avoid additional misunderstandings (no game name was specified).

foubou, posted Tue Mar 07, 2017 12:47 am (21266)

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Here are the translation tools for people who want to translate FC in another language :

https://www.dropbox.com/s/nuzharbumdhmf ... s.zip?dl=0

Follow the steps in "How to use" file to make it work.

Send me PM if you encounter trouble.

Screenshots :
french http://www.hostingpics.net/viewer.php?i ... french.jpg
spanish http://www.hostingpics.net/viewer.php?i ... nishFC.jpg
german http://www.hostingpics.net/viewer.php?i ... rmanFC.jpg

merseus, posted Fri May 05, 2017 10:15 pm (22935)

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e descargado tu herramienta pero de momento ninguna habre tengo windows 7,si esta herramien funciona en la version de pc me parece que si,

merseus, posted Fri May 05, 2017 11:13 pm (22937)

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sabes que parte se encuantra los dialogo del juego en version de pc?