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  #1  
Old 2010-09-06, 20:29
wolfman
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Unhappy Crass dec=xror option encrypted problem.

hello. I'm korean and I can't speak english well.
please understand even if you can't understand me clearly.

I have got a question.
A few days ago, I had got crass source, this file name is cui-1.0.4-src.
I tried to source interpretation, but the problem is here.

This is dec=xror parameter decode source of crass tool.
---------------------------------------------------------------------------------------
// xror
static void xp3filter_decode_xor_ror(BYTE *buf, DWORD len, DWORD offset, DWORD hash)
{
BYTE shift, xor;

shift = (BYTE)hash;
xor = (BYTE)((hash >> 8) & 0xff);
if (!shift)
shift = 15;
if (!xor)
xor = 0xf0;

shift &= 7;
for (DWORD i = offset; i < offset + len; i++) {
buf[i] ^= xor;
buf[i] = (buf[i] >> shift) | (buf[i] << (8 - shift));
}
}
---------------------------------------------------------------------------------------
I needed to repacker, source is changed. (exclusive or=xor)

(before) for (DWORD i = offset; i < offset + len; i++) {
buf[i] ^= xor;
buf[i] = (buf[i] >> shift) | (buf[i] << (8 - shift));}

(after) for (DWORD i = offset; i < offset + len; i++) {
buf[i] = (buf[i] << shift) | (buf[i] >> (8 - shift));
buf[i] ^= xor;}

and then, I'm got CUI file from solution build to Visual Studio 2008.
I can package it back to .xp3 form but Executable is Fail when SWANSONG.
I'm certain to .xp3 file problem but not ANSI or Unicode problem.

I don't know what solution.
How can I do?

please give me the soultion of dec=xror encryption. (xp3 repack)
thank you and have a nice day.

Last edited by wolfman; 2010-09-06 at 21:15.
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  #2  
Old 2010-09-06, 20:47
dsp2003
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Use this:
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  #3  
Old 2010-09-07, 16:45
wolfman
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Kikiriki?
What's a program?
I'll challenge again.
Thank you very much.
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  #4  
Old 2010-09-07, 19:24
wolfman
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Excuse me, I ask one more question.
How to use crass for encrypted files?
For example, reverse to .xp3 archive form.
I think this problem is between my program and kirikiri engine version compatibility problem.
So, I tried to make CUI Program from Visual Studio 2008. but, it is failed.
If everyone are have a time, please give me a hint or solution.
It will become really a big assistance.

Last edited by wolfman; 2010-09-07 at 19:58.
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  #5  
Old 2010-09-07, 22:50
dsp2003
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The tool posted above is a console repacker, which hooks original game's application and it's modules in order to correctly process the encrypted data. Works for the most of encrypted .xp3 archives, except for those without "proper" cxdec module ("Okiba ga Nai!", for example). Plus, you can use the following console application written in ASM for the several encrypted .xp3 archive variations: http://4otaku.ru/post/712

It seems the CRASS is no longer in development, so it won't support newer games at all. It's also impossible to repack anything with CRASS, since it has no repacker modules.
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  #6  
Old 2010-09-07, 23:41
d_fallen_god's Avatar
d_fallen_god d_fallen_god is offline
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Default

Kirikiri...^_^

I can help you with that....
I may have what your looking for...
do you have an email?
or
email me:d.fallen.god@gmail.com
Crass is not fully functional in some kirikiri games...
I already hack a lot kirikiri games lately, so I can help with your problem...
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  #7  
Old 2010-09-08, 17:48
wolfman
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To. dsp2003

I'm sorry for the late reply.
I used to Kikiriki tool. but, it was not key of solution.

And then, very thank you. So far, I didn't know Something amazing site.
However, I have a problem. This site language is russian language.
So, I'm through translate help from google chrome Web browser.
But, it's not perfect. I can't understand instruction to arc_conv tool and etc.
(--xp3, --swan for example) namely, I don't know consol option input position.

I'm really sorry that I ask you again.
If you know consol control instruction, please help me.
Have a nice day.

p.s) I read a crass explanation reply, I know it very well. thank you.
p.s2) If you need, add to image file.

Last edited by wolfman; 2010-09-08 at 20:15.
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  #8  
Old 2010-09-08, 23:32
dsp2003
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Regarding the arc_conv, use the following command line:

Quote:
arc_conv.exe --pack xp3 directory archive.xp3 swan
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  #9  
Old 2010-09-09, 06:01
wolfman
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To. dsp2003

I can understand that How to creation pack file from arc_conv.
Since, I'm trying to find Decompile way but, I can't found.
So, I have a other choice.

First, use to Crass from complete decompile.(unpack)
And, use to arc_conv from complete compile. (repack)
of course, compile code is reference from previous reply.

Resultingly, the following. (run exe)


Maybe, this cause is between dec=xror code of Crass and arc_conv compatibility.
If I want to get a Success from .xp3 decompile/compile, before I know arc_conv.
And why appear popup image(data.xp3 error) I don't know the reason why.
This is equate to something Executable is Fail when SWANSONG.(The body text)


Please how to use archive decompile of arc_conv.
in case, arc_conv is only compile tool?
I tried to Normal decompile but, RAR archive conversion.


And, the compression file is protect. also, I don't open Shift-jis 932 code option.
If you are have a time, please give me a hint or solution.

have a nice day.

Last edited by wolfman; 2010-09-09 at 13:24.
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