ROM Hack Can't Decrypt The Binding Of Isaac (CIA)

[Deleted User]

I'm trying to use decrypt9 so that I can make a rom hack for this game, however from my understanding it needs to be decypted first before I can rebuild the game.

However when I try decryptng it I receive an error saying that it can't be done and that it may not be a CIA.

Is there a way around this?

The game is The Binding Of Isaac Rebirth if that makes a difference

 

[chaoskagami]

Isaac uses seed crypto. Do you have a seeddb extracted from your NAND/the internet?

I was once bored enough to install mods on TBoIR on 3DS (it shares literally everything with the PC version), so I kind of know what you're attempting to do.

 

[Deleted User]

Isaac uses seed crypto. Do you have a seeddb extracted from your NAND/the internet?

I was once bored enough to install mods on TBoIR on 3DS (it shares literally everything with the PC version), so I kind of know what you're attempting to do.

I saw its romfs I was surprised that it uses the same file structure.

I already have my seeddb how do I use it to decrypyt and rebuild the game?

 

[chaoskagami]

I saw its romfs I was surprised that it uses the same file structure.

I already have my seeddb how do I use it to decrypyt and rebuild the game?

Decrypt9. You drop the seeddb in the same folder as the CIA.

After that, you can either use one of the many 'romfs rebuilder' type GUIs or use ctrtool/makerom manually.

 

[Deleted User]

Decrypt9. You drop the seeddb in the same folder as the CIA.

After that, you can either use one of the many 'romfs rebuilder' type GUIs or use ctrtool/makerom manually.

It goes into D9Game correct? I have both the seed file and game there but am receiving the same error

 

[chaoskagami]

Where did you get the CIA from? I've seen that error on incorrectly generated ones.

EDIT: Also, do you have all of the slot keyfiles for decrypt9 / a keydb with all of them?

 

[Deleted User]

Where did you get the CIA from? I've seen that error on incorrectly generated ones.

EDIT: Also, do you have all of the slot keyfiles for decrypt9 / a keydb with all of them?

I got it from a 3dsrom subreddit

keys go in the root, and seed goes into D9Game with the cia right?

 

[chaoskagami]

It looks like you have everything set up properly as far as I can see.

Can you try DL'ing it as a CIA using CIAngel, and using that instead as a base?

(Also...nobody uses r/3dsrom. It's dead. Go elsewhere if you must be that guy.)

 

[Deleted User]

It looks like you have everything set up properly as far as I can see.

Can you try DL'ing it as a CIA using CIAngel, and using that instead as a base?

(Also...nobody uses r/3dsrom. It's dead. Go elsewhere if you must be that guy.)

It was my goto since I own the game but I could never seem to find the game from my tickets (this was also before CIAAngel was around)

If I download it from my eshop normally how can I extract the CIA?

 

[chaoskagami]

It was my goto since I own the game but I could never seem to find the game from my tickets (this was also before CIAAngel was around)

If I download it from my eshop normally how can I extract the CIA?

You can't extract it once it's installed, afaik. Or if you can, it hasn't been done yet.

You CAN use PlaiCDN and a dump of your own console's decTitleKeys.bin to download it off nintendo's servers as your console would recieve it. Of course, you said you lost your keys, and a illegitimate CIA occupies the same title, so...

 

[Deleted User]

You can't extract it once it's installed, afaik. Or if you can, it hasn't been done yet.

You CAN use PlaiCDN and a dump of your own console's decTitleKeys.bin to download it off nintendo's servers as your console would recieve it. Of course, you said you lost your keys, and a illegitimate CIA occupies the same title, so...

How would I go about just downloading and not installing the CIA with CIAngel then?

I appreciate the help

 

[chaoskagami]

How would I go about just downloading and not installing the CIA with CIAngel then?

I appreciate the help

R and L cycle modes. One of them is 'Download CIA' which generates a CIA file for the game in /CIAngel.

 

[Deleted User]

R and L cycle modes. One of them is 'Download CIA' which generates a CIA file for the game in /CIAngel.

Gives me an error saying that it can't create a CIA lol

edit: now I cant seem to find the game on ciaangel..

 

[Deleted User]

R and L cycle modes. One of them is 'Download CIA' which generates a CIA file for the game in /CIAngel.

Just used PlaiCDN and it worked, should I worry about it failing at 0x?

 

[morvoran]

LOL! 0x failed means that the decryption process failed zero times. That means everything went ok.

 

[chaoskagami]

Just used PlaiCDN and it worked, should I worry about it failing at 0x?

D9 can process multiple things. You only have one there (TBoI:R), therefore:

1x processed / 0x failed

means 1/1 decryptions succeeded. You have it decrypted now.

 

[Deleted User]

D9 can process multiple things. You only have one there (TBoI:R), therefore:

1x processed / 0x failed

means 1/1 decryptions succeeded. You have it decrypted now.

I got it working, thanks. Now I just need to figure out why the mods wont work lol It replaced the sound, but not the graphics, and hte game crashes

rip

Just trial and error now ;p

 

[chaoskagami]

I got it working, thanks. Now I just need to figure out why the mods wont work lol It replaced the sound, but not the graphics, and hte game crashes

rip

Just trial and error now ;p

Any mods that require Afterbirth won't work, fyi. Rebirth-only.

 

[Deleted User]

Any mods that require Afterbirth won't work, fyi. Rebirth-only.

I figured as much. Just trying to push its limits

 

[chaoskagami]

I figured as much. Just trying to push its limits

The problem is much of what was added in AB is hardcoded in the executable, so with no version of AB for the 3DS, there's nothing that can be done about that. You can probably get away with older versions of basement renovator, at least, and possibly the item description clarification stuff.