CB2crypt v1.3

[misfire]

Oh nice, now that we know the compression, and it's pretty obvious how the cheats file is set up on structures, we can easily build a tool to create and compress a custom cheats file to throw in a Code Breaker Save file

The funny thing is that you were looking at the decompression code while I was digging in the compression code. From a glance, I couldn't really tell what's going on but when I went to SaveCheats(), I found a call to a function with five arguments, the 5th always being 9.

Actually, 9 is a magical number when it comes to compression. Every Linux savvy user knows that "gzip -9" packs a file with the best compression level. I had then looked at the headers of the zlib library and immediately saw compress2() and uncompress(). A simple test program finally confirmed my assumption.

Well, since zlib doesn't seem to want to work on Win32 app compiling for me right now I can't build a PC tool, but do have a working PS2 tool! lol...

Check out http://www.zlib.net/ for a Windows port.

I'll be looking at the CBS compression after work.

[misfire]

FYI, I figured out how to unpack CBS files. The data section we had wondered about turned out to be zlib-compressed (like cheats file) and RC4-encrypted (like CBC and PCB files).

I managed to unpack the CBS file in "CBv10 Exploit v0.01a by Gtlcpimp.rar": http://pastie.org/1358541

Also, I wrote a simple Perl script to unpack zlib-compressed data: http://pastie.org/1358549

Use it like: $ perl unpack-script 8 cheats cheats.out

So I guess the remaining work is to understand the container format of unpacked CBS files and extend cb2util accordingly.

[kh2k4]

Maybe you can find out how to stop it adding the useless cheats partion to a HDD also.

[misfire]

cb2util is now able to extract (and optionally decrypt) all codes from "cheats" files: http://pastie.org/1360413

I created a dedicated git branch for development (https://github.com/misfire/cb2util/tree/cheats). And with the help of my libcheats library (https://github.com/misfire/libcheats), creating such files should be easy too.

Even more good news: I found the source code of xp2cc.

[bungholio]

This may sound like a dumb question due to me not reading and comprehending things, but what's being done with cb2crypt? Wasn't it mostly for decrypting and encrypting codebreaker codes for both v6 and lower, and v7 and higher? What's changed?

[Gtlcpimp]

This may sound like a dumb question due to me not reading and comprehending things, but what's being done with cb2crypt? Wasn't it mostly for decrypting and encrypting codebreaker codes for both v6 and lower, and v7 and higher? What's changed?

CB2Util not CB2crypt

[misfire]

This may sound like a dumb question due to me not reading and comprehending things, but what's being done with cb2crypt? Wasn't it mostly for decrypting and encrypting codebreaker codes for both v6 and lower, and v7 and higher? What's changed?

Good question. To be honest I don't know if any new features make it to CB2crypt. I'm currently putting all of my energy into cb2util, a portable console application, that will soon be able to cope with all CodeBreaker file formats.

Anyway, I think I've got all pieces I need to add CBS support (read and write) and to write a code compiler to create Day1 and "cheats" files. Stay tuned!

[misfire]

And btw, here is the source code of xp2cc: https://github.com/misfire/xp2cc

Really funny to see something I've written six years ago...

[Gtlcpimp]

So does anyone think it would be useful for a CB ps2 http server? I don't want to put one together if no one would think it would serve a use...

[kh2k4]

How many times has the hacked codebreaker v9.2 server been used?

[Gtlcpimp]

How many times has the hacked codebreaker v9.2 server been used?

What server? What I am talking about is a PS2 app that will operate an HTTP server on the PS2 to remotely manage the "cheats" file in the PCB folder via web browser...

[kh2k4]

I see good idea for slim users for lengthy updates could you also make a ps2side app for editing so you don't have to have a computer / network constantly turned on for small updates though the same as CheatsE?

[Gtlcpimp]

I could, just don't know how much use it would serve though. Most likely only like one or two people would use!

[urbigbro]

Thanks a ton misfire!

It's great news that you figured out the cheats file MC extraction. Bravo!

The only other thing I could think anyone would want to do is extract the cheats from the partition CB creates on a FAT PS2's HDD.

I can think of at least two people that would use it. Dlanor at psx-scene and myself. i know he has hundreds of hand typed codes for the FF series of games on his HDD.

I'm not asking for this because it would seem like too much effort for the amount of people who would use it.

You have already done some much to make cheats easier to use, I feel no one really can rightly ask any more of you.

[misfire]

You're welcome.

Tell me more about the HDD partition. I'm interested. I guess it is encrypted? Can you extract it as an image?

It's a shame that I actually never connected a HDD to my fat PS2...