ROM Hack [Release] 3DS_CTR_Decryptor-VOiD

[drfsupercenter]

msvcr120d.dll

The old one needed the cygwin DLLs, this one needs that. Google tells me it's related to Visual Studio.

I just grabbed it from dll-files.com and it runs, but without it it just whines that it can't find the file on my computer.

 

[ground]

So I tried extracting the exeFS from Pokémon X and got a fatal error...

Exception: STATUS_ACCESS_VIOLATION at eip=611222CF
eax=00041810 ebx=80041548 ecx=00000004 edx=800414E4 esi=00041810 edi=00288C20
ebp=00283178 esp=0028316C program=F:\Desktop\3DS Stuff\Decrypted ROMs\Pokémon X\ctrtool.exe, pid 5080, thread main
cs=0023 ds=002B es=002B fs=0053 gs=002B ss=002B
Stack trace:
Frame    Function  Args
00283178  611222CF (00288C20, 00041810, 00000004, 610B57B0)
00288C20  6113D8E5 (00000000, 80041548, 80000000, 00000000)
End of stack trace

Tried in the 3DS Explorer that was linked in the first post, extracted the encrypted partition and used padxorer.exe to decrypt - first chunk of the file looks like this:
".code.......Ìœ+.banner...ž+.Èn..icon."
But ctrtool won't extract it, I get:
ctrtool: unknown option -- decompresscode
Usage: ctrtool [options...] <file>
Tried without that part and just get:
"Unknown file"
Even though my file is named ExeFS.bin.out (tried it uppercase too in case it was case sensitive)
Any ideas?

you have to use the newest ctrtool linked by windwkr. also make sure that you xorred the files correctly

 

[Huntereb]

Oh I forgot to mention it. actually cci and 3ds are the same format, but makerom produced compact rom.
somehow gateway cannot run trimmed VC roms, so I had to make the rom 128 MB.

Someone gave me a trimmed version of VC Super Mario for GB a while back. It's like 4MB's and it works fine. How is it not possible?

 

[hippy dave]

It is possible, you need to manually change the file size to leave room for save data, and edit the header to point to the right space.
I haven't been bothered enough about ~100mb wasted to try personally but it should work fine.

 

[Huntereb]

It is possible, you need to manually change the file size to leave room for save data, and edit the header to point to the right space.
I haven't been bothered enough about ~100mb wasted to try personally but it should work fine.

Yeah, that's what SilverfalconLP must have done.

 

[ground]

Got a link to a compiled Windows binary? The one I have I grabbed from someone's post, which was an .exe and some DLLs

--Edit--

ninja'd
Do I not need the DLLs with this version?

--Edit 2--

No, you still need the DLLs apparently

just download that file, unzip it and look in the map debug

 

[supermalloch]

Has anyone compiled this (https://github.com/3DSGuy/Project_CTR/tree/master/makerom) as it seems "romfs_gen.c" holds at least a partially finished solution to rebuilding Romfs. I can't seem to compile it myself.

 

[CompCom]

Just an update on my progress. I just got card2 games working and now can re-encrypt them properly as well. Now all that remains is implementing a lot of error checking, optimization and testing (which will still take a few more days just to make sure there are no bugs) then I should be able to release my tool.

Spoiler

 

[Mikecrowfone]

Just an update on my progress. I just got card2 games working and now can re-encrypt them properly as well. Now all that remains is implementing a lot of error checking, optimization and testing (which will still take a few more days just to make sure there are no bugs) then I should be able to release my tool.

Spoiler

View attachment 10368

Nice. Were you the person whom said that he reencrypted with original keys?

 

[gamesquest1]

ok i got it working without doing anything but edited the romFS and fixing IVFC hashes and NCCH hashes(i had forgot the IVFC was hashed in the NNCH )....so yeah no need to rebuild the rom...works exactly like the original and works with existing saves

(PS i thing a rebuilt rom would be better in the long run, but its a bit fickle atm....once a nice easy tool is available i would happily switch to that XD)

 

[CompCom]

Nice. Were you the person whom said that he reencrypted with original keys?

No, I have created a tool the re-encrypts games using zero keys.

 

[Subtle Demise]

I was thinking, I did see in this thread some tools that could convert exefs to an elf file and it is possible to patch the exefs to redirect romfs to the SD card. What I'm wondering is, would it be possible to turn the resulting .elf into a launcher.dat/msetforboss.dat and run the game directly using the ds profile exploit?

 

[gamesquest1]

worth noting that i assume a rebuilt rom using the original XOR might work on the cheapo clones like R4i i assume.....zero encrypted wouldnt atm

 

[kyogre123]

I was thinking, I did see in this thread some tools that could convert exefs to an elf file and it is possible to patch the exefs to redirect romfs to the SD card. What I'm wondering is, would it be possible to turn the resulting .elf into a launcher.dat/msetforboss.dat and run the game directly using the ds profile exploit?

To then install roms converted to CIA?

 

[Subtle Demise]

To then install roms converted to CIA?

That's an idea, but I was thinking more like just launching the exefs as homebrew with the current ROP launchers we have now. I might mess around with it later this week on my day off, but I think it could work, albeit much less convenient than Gateway.

 

[gamesquest1]

that wouldnt work out.....dont worry the people not wanting to pay for a gateway will get their rom loader one day

 

[CompCom]

worth noting that i assume a rebuilt rom using the original XOR might work on the cheapo clones like R4i i assume.....zero encrypted wouldnt atm

It should work but we would probably need someone with a clone to confirm. In any case my tool will be able to re-encrypt the romfs partition with an xorpad and reinsert back into an ncch. It won't be an automated process but it will be possible.

 

[Subtle Demise]

that wouldnt work out.....dont worry the people not wanting to pay for a gateway will get their rom loader one day

Well that sucks. I won't waste my time on it then. It was just a thought.

 

[gamesquest1]

Well that sucks. I won't waste my time on it then. It was just a thought.

well basically you would need to create a gateway style launcher to get you back into the normal OS, and apply whatever patches you need to launch roms from the SD card....itwouldnt really be as simple as decrypt rom, rename to launcher.dat and run

 

[Subtle Demise]

well basically you would need to create a gateway style launcher to get you back into the normal OS, and apply whatever patches you need to launch roms from the SD card....itwouldnt really be as simple as decrypt rom, rename to launcher.dat and run

I knew it wouldn't be that simple, it would take a lot of patching and reverse-engineering on a per-game basis, but if you have to initialize the Home menu to even run games to begin with, perhaps it's better for me to learn how the 3DS actually runs the games after decryption.