ROM Hack The Splatoon 2 updated save is encrypted

[Nexcus]

Anyone knows how to edit it?

 

[Kalomaze]

u cant bruh

 

[Nexcus]

It is possible!

 

[SimonMKWii]

Simple.
Decrypt it, edit it, reencrypt it, calculate the new checksum and append it to 0x08.

 

[TheHomesk1llet]

Even better, make a ram editing homebrew tool that removes the need to decrypt/calculate any checksum.

 

[SimonMKWii]

Even better, make a ram editing homebrew tool that removes the need to decrypt/calculate any checksum.

That's a really shitty way of doing it...

 

[TheHomesk1llet]

That's a really shitty way of doing it...

Why? Is it not more convenient to do it that way? Especially considering the decryption method probably isn't publicly available, at least from what i've seen.

 

[SimonMKWii]

Why? Is it not more convenient to do it that way? Especially considering the decryption method probably isn't publicly available, at least from what i've seen.

The decryption method is publicly available, you just need to know where to look

 

[Arck]

Even better, use the released save editor that can decrypt/encrypt the save:
https://twitter.com/LeanYoshi/status/995220547758936066

 

[SimonMKWii]

Even better, use the released save editor that can decrypt/encrypt the save:
https://twitter.com/LeanYoshi/status/995220547758936066

Yeah, I wouldn't recommend posting a link to it here...
The keys are baked into the assembly, which is naughty!

 

[Arck]

Yeah, I wouldn't recommend posting a link to it here...
The keys are baked into the assembly, which is naughty!

which key ?

 

[SimonMKWii]

which key ?

Looking into the (crappily) obfuscated assembly, it appears both the decryption and signing key are stored as plaintext.

 

[Arck]

Looking into the (crappily) obfuscated assembly, it appears both the decryption and signing key are stored as plaintext.

I don't think that how it actually work.

--------------------- MERGED ---------------------------

The game doesn't use any "warez" key, I checked teh function in the NSO

 

[SimonMKWii]

I don't think that how it actually work.

--------------------- MERGED ---------------------------

The game doesn't use any "warez" key, I checked teh function in the NSO

???
The keys are stored in the NSO, you can see exactly how it stores the save.
It stores data in 4 "partitions":
"SaveDataCmn", "SaveDataVss", "SaveDataLocal" and "SaveDataMsn".

 

[Leanny]

They are not though? There are no keys hardcoded, neither in the NSO nor in the tool. And there are 9 "partitions", so I guess you overlook more than you want to

 

[Jayro]

Simple.
Decrypt it, edit it, reencrypt it, calculate the new checksum and append it to 0x08.

Just give it time, there will likely come a script or batch file to automate most of that for us. :3

 

[SimonMKWii]

They are not though? There are no keys hardcoded, neither in the NSO nor in the tool. And there are 9 "partitions", so I guess you overlook more than you want to

?
Umm, yeah, the save is encrypted with a key.

 

[Arck]

?
Umm, yeah, the save is encrypted with a key.

smart way to get info about how it really works lmao

no need to spread fake news tho

 

[Nexcus]

I don't think that how it actually work.

--------------------- MERGED ---------------------------

The game doesn't use any "warez" key, I checked teh function in the NSO

???
The keys are stored in the NSO, you can see exactly how it stores the save.
It stores data in 4 "partitions":
"SaveDataCmn", "SaveDataVss", "SaveDataLocal" and "SaveDataMsn".

They are not though? There are no keys hardcoded, neither in the NSO nor in the tool. And there are 9 "partitions", so I guess you overlook more than you want to

How to be an OctoGirl of DLC? please

 

[SimonMKWii]

smart way to get info about how it really works lmao

no need to spread fake news tho

Is your brain in your middle toe?
The entire contents of the save is encrypted with an AES256 key, with a CRC checksum in the header.