ROM Hack [Release] AGB_FIRM Signature Patcher + GBA ROM Converter

[DJPlayer]

Can't wait for N3DS Support Q_Q

About New3DS support: I don't own one and I can't make patch without XORpads, since N3DS using additional encryption layer on ARM9 FIRM section. More information here: http://3dbrew.org/wiki/FIRM#New_3DS_FIRM

Could we help you with this?
I own a N3DS Firmware 9.0.0-20E.
You said we can't brick it if we only delete/corrupt the AGB_FIRM so I'm willing to try it.
What do you need exactly?

 

[Mazamin]

Now I only need a method to play ds roms injected in dsiware and my life is completed

 

[Riku]

Question for @Riku if I Nand mod my New 3DS can I be a guinea pig for a New 3DS release? Or is it simply not possible on a New 3DS due to non-existing software?

I can patch New3DS AGB_FIRM but I need AGB_FIRM ARM9 section XORpad. It can only be done using New3DS hardware and doesn't supported by current public tools. You need to modify Decrypt9 sources using this info:
http://3dbrew.org/wiki/FIRM#New_3DSFIRM

 

[DJPlayer]

I can patch New3DS AGB_FIRM but I need AGB_FRIM ARM9 section XORpad. It can only be done using New3DS hardware and can't be done with current public tools. You need to modify Decrypt9 sources using this info:
http://3dbrew.org/wiki/FIRM#New_3DSFIRM

If you're able to ask the dev of Decrypt9 to help you with this, I'm willing to make the XORPADs for you

 

[cearp]

Not everyone has an ambassador console though.

True. But you an install the ambassador certificate and rom, but this is easier once the premade roms come out.

you don't need an ambassador console to play ambassador/gba games
and legitly, you don't need an ambassador certificate to play gba games, only an ambassador console. (you can delete the certificate and sure, still play your earned games)

 

[KazoWAR]

About Pokemon games saving or not. They do require 128KB FLASH in order to work and save properly. BUT they can be patched(and alot of the roms you find in the wild are already patched, unpatched roms wont boot when the save data is set to 64KB) to work with 64KB FLASH. they seem to work for the most part, until you beat the elite four. then the sav file is destroyed. the way the 3rdgen pokemon save is structured, it is broken in to 4096 byte blocks. the main save data takes up 14 blocks(56KB), then another 14 blocks for the backup data. after the first 28 blocks is some more blocks, one dealing with the Hall of Fame data. Once beating the elite four, the game attempts to read form this block way out of bounds of the 64KB file and is unable to read it and just simple says the save data has been erased due to corruption or damage.

example

Spoiler

Skip to 2:04

 

[hippy dave]

Fortunately pokemon games are pretty obscure and hardly anyone is interested in playing them.

 

[Deleted-355425]

thanks for all your hard work @Riku

 

[Feroz El Mejor]

Fortunately pokemon games are pretty obscure and hardly anyone is interested in playing them.

Yes, nobody cares about them, that include the no emulation of Pokémon X/Y on Citra.

 

[jmleolgq]

I try many GBA games, almost every game works, except Yggdra Union.

 

[DJPlayer]

I try many GBA games, almost every game works, except Yggdra Union.

Nice! Q_Q
I wish I could play them.... but... no N3DS Support yet :/

If someone is willing to write a Decrypt9-Mod I would create the needed XORPADs for Riku

 

[Xenon Hacks]

Fortunately pokemon games are pretty obscure and hardly anyone is interested in playing them.

Ok calm down hitler

 

[Naked_Snake]

ARGHHHHHH i cant make Leisure Suit Larry GBA ROM

 

[Deleted-355425]

ARGHHHHHH i cant make Leisure Suit Larry GBA ROM

everything happens for a reason

 

[Naked_Snake]

everything happens for a reason

are you able to try if i upload the rom please?

 

[DJPlayer]

@Riku ,
I just have a question.
I'm not sure how the Application in NAND works but I think they're similar to them we install to the SD Card, right?
Can I dump my NAND of my N3DS, get the .app of the AGB_FIRM and use SDINFO.py to create Xorpads for it?

 

[motezazer]

-Nevermind, it's an IPS patch-

 

[mid-kid]

I've unpacked the patched and unpatched versions, and here is what is patched:

Spoiler: images

I've tried running those parts through ida, and my results are these:
1. I have no idea what the former part is supposed to do, but it's probably some data, not code.
2. The latter part just sets r0 to 0 (which probably is the return code for success), and (jumps to an instruction that) pops r4-r6 and pc (a.k.a. returns)
I utterly suck when it comes to reversing stuff, so meh.

@motezazer: given the above images, you could start searching for the HEX strings. Maybe you turn up with something.

 

[motezazer]

I've unpacked the patched and unpatched versions, and here is what is patched:

Spoiler: images

I've tried running those parts through ida, and my results are these:
1. I have no idea what the former part is supposed to do, but it's probably some data, not code.
2. The latter part just sets r0 to 0 (which probably is the return code for success), and (jumps to an instruction that) pops r4-r6 and pc (a.k.a. returns)
I utterly suck when it comes to reversing stuff, so meh.

@motezazer: given the above images, you could start searching for the HEX strings. Maybe you turn up with something.

Thank you, it's enough for me.

 

[DJPlayer]

Thank you, it's enough for me.

would you be able to port it to n3DS with this?