[Release] PSXPeria: Native PSX Emulator ISO Converter

[yifanlu]

PLEASE, PLEASE post all your issues and bug reports regarding the converter at github. https://github.com/yifanlu/PSXperia/issues Also, include detailed information such as a copy of the converter output, android's logcat, etc. If your bug is reported already, make a comment with your system information and logs on the issue so I know multiple people are experiencing it.

Links

• My site http://yifan.lu/
• First writeup, about the formats and disassembling
• Second writeup, about decrypting files, cracking the format, and such
• YouTube video of Xperia Play running Crash 3
• Source code
• 1.0 binary jar (command line & gui)
• Wiki: detailed usage guide, compatibility list, etc

Stuff that's done

• Reversed engineered all propriety formats (image.ps,zpak,toc,etc)
• Extracted and decrypted emulator binary
• Mapped out important functions
• Patched TOC functions to load unencrypted tables (wrapper library)
• Tool to extract image.ps into an ISO
• Tool to convert an ISO to image.ps
• Tool to generate modified APK with wrapper library, custom text, icon, and data (converter backend)
• Tool to extract Crash Bandicoot and patch some files for the converter
• Command line interface (frontend)
• GUI (frontend)
• Remove requirement for "aapt" and "jarsigner" in PATH.
• Bug bashing

Stuff for the future (no promises)

• Load gamedata/icon into converter from XML file (name,titleid,etc)
• Batch convert
• Multidisk
• Game manual

Check out this guide if you are having any problems. It contains a detailed usage directions, some guidelines for settings, and troubleshooting advice. If you still can't get it working, submit a bug report here.

 

[Scorbion]

Nice to see someone starting on this ,, I Bought syphon filter. Just tell me what to do and I ll do it.

good luck m8

 

[AndroHero]

We cannot share paid games, you will have to get someone who has bought the game to do a memory dump for you ........

Sent from my R800i using Tapatalk

 

[gojoechris]

Why doesn't someone just donate the money so he can buy a game? I'd do it but I'm buying a house.

 

[Blagus]

How much does any multi-disk game costs? SE's PSX market is not available here.

 

[Logseman]

The problem is... AFAIK, no multidisk game is available in the PSX market.

 

[yifanlu]

We cannot share paid games, you will have to get someone who has bought the game to do a memory dump for you ........

Sent from my R800i using Tapatalk

Yes, I know. I only really need the first 40 bytes or so of image.ps from the ZPAK.

Why doesn't someone just donate the money so he can buy a game? I'd do it but I'm buying a house.

First, I can't access the store because I have the R800i and am in US. Second, it is a rule of mine to never accept donations until after a project is completely finished.

 

[MechaBouncer]

First, I can't access the store because I have the R800i and am in US. Second, it is a rule of mine to never accept donations until after a project is completely finished.

That's interesting to learn. My phone is an unlocked R800a that I'm using on AT&T. I installed the unlocked UK firmware on it and it now reports as an R800i in the "About phone" section. However, as of the last month or so, I can finally see games in the PlayStation Pocket app store. I wonder if it's using the IMEI or something like that to report to the store for the region?

 

[ashergray]

If you use a User Agent String changer to match that of the r800a and use a proxy so that the website thinks you are in the proper country you can maybe able to download the games that way.
I can confirm this worked for the gameloft wapshop from my desktop. I have never seen where the psx games come from so I cant guarantee it, but it is worth a shot.

 

[MechaBouncer]

They're actually in the Android Marketplace. For the longest time, they were limited to Europe, but now they're available in the US. Perhaps it might be possible to purchase them from there and remote install them to the phone?

 

[ashergray]

Again all that can be done with the ua switcher and a
Proxy in firefox. Android market is available via your browser. Could be worth a shot.

sent from the original unlocked R800x.

 

[Logseman]

I'm sure there'll be no need to break a sweat about this.

LOL @ashergray's sig

 

[ashergray]

I'm sure there'll be no need to break a sweat about this.

LOL @ashergray's sig

I figured I earned it. I was for about 20 minutes the only unlocked R800x.
That felt pretty awesome.

 

[yifanlu]

So I have extracted ALL the encrypted files now, this means libdefault.so, image_ps_toc, and ps1_rom.bin. It was pretty hard because it was obfuscated in memory, but I got it using another, unorthodox method. Now, here's the weird thing. I can't figure out how the PS1 bios works. It's not a copy of any of the BIOS floating around the internet, in fact, it's not even the same format (all the bios that can be found on the internet have a similar structure). In addition, I still can't figure out what image_ps_toc is for. If anyone wants to take a look at these files for me (I've already decrypted them, you're welcome), PM me.

EDIT: I spoke too soon, I found out that the PS1 ROM is actually part of the PS2 BIOS. Yea, wtf. It seems to be using the PS1 emulator bios from the PS2, or something like that. Now, to find what the toc file is.

 

[Blagus]

So I have extracted ALL the encrypted files now, this means libdefault.so, image_ps_toc, and ps1_rom.bin. It was pretty hard because it was obfuscated in memory, but I got it using another, unorthodox method. Now, here's the weird thing. I can't figure out how the PS1 bios works. It's not a copy of any of the BIOS floating around the internet, in fact, it's not even the same format (all the bios that can be found on the internet have a similar structure). In addition, I still can't figure out what image_ps_toc is for. If anyone wants to take a look at these files for me (I've already decrypted them, you're welcome), PM me.

EDIT: I spoke too soon, I found out that the PS1 ROM is actually part of the PS2 BIOS. Yea, wtf. It seems to be using the PS1 emulator bios from the PS2, or something like that. Now, to find what the toc file is.

TOC maybe contains sub-channel data, known from original PSX CD-s, which served in copy-protection mechanism?

 

[yifanlu]

I've been trying to find some information on the PSX iso format, like what's at the different offset, where checksums are, where the executable starts, etc, but google isn't helping. Can you tell me more about this? If this copy protection thing is true, that means every game has a different libjava-activity.so. Could someone with another game pm me with /data/data/packagename/libs/libjava-activity.so where package name starts with com.sony and ends with the titleld? Also, Blagus, if you want, I can let you take a look at the decrypted toc files.

 

[Blagus]

I've been trying to find some information on the PSX iso format, like what's at the different offset, where checksums are, where the executable starts, etc, but google isn't helping. Can you tell me more about this? If this copy protection thing is true, that means every game has a different libjava-activity.so. Could someone with another game pm me with /data/data/packagename/libs/libjava-activity.so where package name starts with com.sony and ends with the titleld? Also, Blagus, if you want, I can let you take a look at the decrypted toc files.

You may want to download original Crash PSX image in CloneCD format, which comes with CUE, IMG and SUB files. Check the SUB file size, if it's approximate to TOC fle, then it might be worth downloading it.

 

[yifanlu]

You may want to download original Crash PSX image in CloneCD format, which comes with CUE, IMG and SUB files. Check the SUB file size, if it's approximate to TOC fle, then it might be worth downloading it.

I made an image using CloneCD and looked at the subdata file. It's 25MB uncompressed and 4MB compressed. The TOC file is 67KB, so I don't think that's it.

 

[ashergray]

maybe it stands for Table Of Contents.
sort of a way to keep track of all the files within the package.

 

[yifanlu]

maybe it stands for Table Of Contents.
sort of a way to keep track of all the files within the package.

It seems like a license or license check. I used the libjava-activity for another game, and it said could not authenticate the licensed content.