PS3 Cobra improvement for PSX/PS2 emulation

[LuanTeles]

@aldostools, here is the patched game_ext_plugin to bypass the crash when launching the HDD whitelisted games through the Cobra:

search:
40 FE 00 34 3B FF FE D4  98 1E 00 0B 7F E3 FB 78
48 02 CF 35 3D 60 80 02  2B 83 00 1F 61 6B 8F 00
41 9D 00 78
replace:
60 00 00 00 3B FF FE D4 98 1E 00 0B 7F E3 FB 78
48 02 CF 35 3D 60 80 02 2B 83 00 1F 61 6B 8F 00
48 00 00 78

I do not know how it will behave on the BC consoles (probably there will be no PS2 virtual HDD support), neither I am sure the patch is clean. But it does work with the SOCOM 2 NTSC and official PS2 Classic game (to make sure PS2 Classics are not broken).

@Agrippa is this patch ok? i mean in BC consoles too?

 

[Agrippa]

I do not know. It was meant to be applied on the fly when mounting a netemu game through Cobra payload. I made a different patch with this particular function call, that was causing the crash, noped. Noping the call should be better than breaking the branch conditions inside. This one may work with BC console too, I do not have any.

4.88 game_ext_plugin
Original: 4B FF 1A 11 38 81 00 A0 38 61 00 AC 4B FF ED 3D
Patched: 60 00 00 00 38 81 00 A0 38 61 00 AC 4B FF ED 3D

 

[LuanTeles]

I do not know. It was meant to be applied on the fly when mounting a netemu game through Cobra payload. I made a different patch with this particular function call, that was causing the crash, noped. Noping the call should be better than breaking the branch conditions inside. This one may work with BC console too, I do not have any.

4.88 game_ext_plugin
Original: 4B FF 1A 11 38 81 00 A0 38 61 00 AC 4B FF ED 3D
Patched: 60 00 00 00 38 81 00 A0 38 61 00 AC 4B FF ED 3D

CaN you please send me the 4.84 dex patch? i couldn't fins a pattern to patch the 4.84 dex

 

[aldostools]

CaN you please send me the 4.84 dex patch? i couldn't fins a pattern to patch the 4.84 dex

This is game_ext_plugin from Rebug 4.84.2

This is game_ext_plugin from Evilnat 4.90

Change the highlighted code to 60 00 00 00. All credits to @Agrippa for the patch.

 

[Agrippa]

It is not the newest patch that @LuanTeles is referring to. However, I am not able to port it to the other firmware versions as I do not have the 4.84 and 4.90 files. I could do it if you send me the modules first.

 

[aldostools]

This is the offset (0x259BC) for the *new patch* in game_ext_plugin from Rebug 4.84.2

And this is the offset (0x257A0) for game_ext_plugin from Evilnat 4.90

Change the highlighted code to 60 00 00 00. All credits again to @Agrippa for the patch.

 

[LuanTeles]

Thank you @aldostools and @Agrippa

@Evilnat see here