OPS2M Config Cryptor

[misfire]

And one more of my old projects. I guess I'm in generous mood.

---========---
   About ops2m
---===========---

All OPS2M demo discs contain an encrypted config file that determines how the
demo's GUI looks like (menus, colors, selectable games/videos etc.) and how the
playable games are started (path to ELF, IOP image to use, play time etc.). The
config file is named SCEE_DD/CONFIG.TXT or SCEE_DD/CONFIG.DD2 (older demos).

You can use ops2m to decrypt/modify/encrypt those config files.


---==---
   Build
---=====---

To compile ops2m, you need CMake and a C compiler like gcc.
I recommend doing an out-of-source build:
$ mkdir build
$ cd build
$ cmake ../src/
$ make

To install ops2m:
# make install


---==---
   Usage
---=====---

usage: ops2m <input file> <output file> [-d|-e]

This will decrypt or encrypt the config file <input file> to <output file> using
the new scheme (file SCEE_DD/CONFIG.TXT, symmetric cipher).

options:
-d decrypt using old scheme (file SCEE_DD/CONFIG.DD2)
-e encrypt using old scheme (file SCEE_DD/CONFIG.DD2)

ops2m-1.1.tar.gz

[kh2k4]

So you can build a custom demo disc? do demos follow a specific lba table like some games? or do they not have one so the files can be added to a demo disc in any order making it easier for opsm2 can you customize the menu music as well?

[misfire]

Sony's demo config system doesn't care about LBA - it's on a higher level and uses filenames. It's basically an independent ELF that builds the GUI based on the config file and starts other demo ELFs.

Here's how the config entry for a MGS3 demo looks like:

*link=PLAYABLE5
NAME=Play
1_NAME=Jouer
2_NAME=Spielen
3_NAME=Jugar
4_NAME=Giocare
TYPE=PLAYABLE
FILENAME=\MGS\MGS3.ELF
IOPIMAGE=300
INACTIVITY=180
PLAYTIME=480

To answer your question, there is also a setting called AUDIOSTREAM.

[misfire]

There's now a GitHub repo:
https://github.com/misfire/ops2m

And a Win32 build to download:
https://github.com/misfire/ops2m/downloads

[kh2k4]

Did they make a typo with following demo disc's there meant to contain game saves yet they don't contain any MEMCARD.ELF in the SCEE_DD/MEMCARD folder like the discs I have which contain game saves, I can't find the content anywhere on the discs.

SCED-52170- Issue 55 - Listed as having 17 Game Saves
SCED-53122 - Issue 56 - Listed as having 17 Game Saves
--
SCED-54408 - Issue 83
SCED-54409 - Issue 84
Listed as having saves for
Primal
The Mark of Kri
Jak II
Amplitude
Metal Gear Solid 2
Star Wars The Clone Wars
Star Wars Bounrty Hunter
Timeslitters 2
Zoe 2
Auto Modellista
Enter The Matrix
007: Night Fire
Silent Hill 3
Return to Castle Wolfenstein

[misfire]

I don't know. What is the output of the decrypted demo config?

[kh2k4]

I haven't done that yet, the odd thing is issues 81 & 82 contain the exact same saves I think ops2m messed up the listings for 83 & 84 the mistake was carried on to the magazine print too.
I don't know about issues prior or above 55 & 56 though the closet I have is issue 52 which has 18 saves and 57 which has 8.

[kh2k4]

55 has the unlocked Fren-ze demo http://hermitgames.com/frenze.php

Hmm 56 has some hidden
The making of Ace Combat video along with a unused demo for TMT2: Battle Nexus
TMNT2/TMNT2.ELF
which later featured usable on 57 probably can be accessed using the same lines from 57
starting the ELF in uLE returns you to the title menu after a few seconds,
I guess the Ace Combat video is unlocked after completing the Ace Combat 5: Squadron Leader demo or something in the config.txt it has hashes beside it unlike the other two in comedown and it seems to link to the san andreass video VIDEO10.
Pressing L1+L2+R1+R2 at any of the title screen titles also produces some sound like it's unlocked something but I didn't find any other content the combo used to unlock Fren-ze on 54.

83 has some placeholder for the downloader / game saves menu before the end of file.

[kh2k4]

A few more I own before doing my remaining ops2m discs.
Bonus Demo 11 (Old / Mature) uses a BCONFIG.TXT instead, this was one my dad got when he registered his ps2 it mentions 16+ v1.00 at the start of the file so I guess they made alternatives versions for various age ranges.
Bonus Demo 4 uses two identical CONFIG.DD2 files one in a SCEE_DD folder the other in a SCED_DD folder.

[kh2k4]

Remaining demo's.

[Hacc]

I know this thread is old, but I felt this information was too interesting not to share here. Some OPM demo discs (retail games too) have malware hidden in their files. I don't recall experiencing this with any demo discs or games that I've ever owned.

Source

[47iscool]

Wow, Sony &/or game publishers must really hate Microsoft, so bad they would try to attack Windows, then again they do develop PS2/PS3 with Linux.

[47iscool]

Sorry about double post, Firefox Aurora's fault.

[Hacc]

I can picture them doing this for a number reasons, but not because they hate Microsoft (it might be one, but somewhere at the bottom of the list). Some devs don't like people poking around in their stuff, do it for personal reasons against their employer, or by accident (who knows what some of them be doing on their PCs?).

Have a look at the developer messages from the NES era here (check Pachi Com and all of others on that list if your curious. You won't be disappointed - trust me), and you will get a better picture of what I'm saying. The devs have feelings too, and sometimes their employer forgets that. So, they retaliate. It's not an excuse to do it, but some like to get their point across, even if it means losing their job. Just another day at the office...

[47iscool]

Thanks for the list Hacc, but your profile is STILL loading, are you running from PSX disc, if so, fret not, the old PSX never gives up on loading, especially with scratched discs.