ROM Hack Discussion Animal Crossing: New Horizons -- Reverse Engineering, Glitches, Bugs, etc. thread!

[AMANO9527]

Someone made a cheat table for ryujinx.
If the base game starts at [base] then your You've got the bug acheivement value is at [base]+10B9990*8 + (offset) 374

And then the Critterpedia fish achievement (Island Icthyologist) is 8 spaces after so it's probably [base]+10B9990*8 + (offset) 374 + (offset) 8 or something
and you just need to write something like FF (255) to that address. Unfortunately I don't know how to write cheat codes.
View attachment 201560

@Neo1103
Oh, it gave me an idea
bug / fish achievement is just counting
Cancel a specific option before capturing
My original bug achievement was 28 and it was 29 after repeated capture

So we just repeat cheat and capture(cancel easily captured)
We can make it to 80

 

[DestinyFeather]

I think this is where it is in the save file

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

and the 11 I have my cursor on currently is most likely the bug one
save file needs to be decrypted first with https://github.com/Cuyler36/HorizonCrypt
so you just open up command prompt
paste your save folder into the horizoncrypt exe folder
cd "path/to/your/horizoncryptexe"
paste
HorizonCrypt -b -d ./
and hit enter
everything decrypts, you make your changes
then
HorizonCrypt -b -c ./
hit enter
everything encrypts
paste save folder to wherever it came from

 

[AMANO9527]

View attachment 201561
I think this is where it is in the save file

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

View attachment 201562
and the 11 I have my cursor on currently is most likely the bug one
save file needs to be decrypted first with https://github.com/Cuyler36/HorizonCrypt
so you just open up command prompt
paste your save folder into the horizoncrypt exe folder
cd "path/to/your/horizoncryptexe"
paste
HorizonCrypt -b -d ./
and hit enter
everything decrypts, you make your changes
then
HorizonCrypt -b -c ./
hit enter
everything encrypts
paste save folder to wherever it came from

OK, thanks for sharing adress bro
so bug statistics at CF94h, fish statistics at CF98h

So we just need:
1. Cancel a specific option before capturing (cancel easily captured)
like, bitterling 8A7, tiger butterfly 247
2. Use ACNH or HorizonCrypt to export personal.dat
Change CF94h and CF98h to 4F (79), then import
3. this should work

I am testing this step

 

[Lupe]

View attachment 201561
I think this is where it is in the save file

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

View attachment 201562
and the 11 I have my cursor on currently is most likely the bug one
save file needs to be decrypted first with https://github.com/Cuyler36/HorizonCrypt
so you just open up command prompt
paste your save folder into the horizoncrypt exe folder
cd "path/to/your/horizoncryptexe"
paste
HorizonCrypt -b -d ./
and hit enter
everything decrypts, you make your changes
then
HorizonCrypt -b -c ./
hit enter
everything encrypts
paste save folder to wherever it came from

Thanks for sharing the address!
I have an easier way to Decrypt the file though.
NHSE has the option to Dump Decrypted in Tools. So you could dump those into a folder, change things in HxD or other HEX editor, then choose 'Load Decrypted' from NHSE after you're done (select the folder you dump decrypted in.)

 

[DestinyFeather]

Thanks for sharing the address!
Easily way to Decrypt the file though-- NHSE has the option to Dump Decrypted in Tools. So you could dump those into a folder, change things in HxD or other HEX editor, then choose 'Load Decrypted' from NHSE after you're done (select the folder you dump decrypted in.)

Oh that must be new ^^ makes things so much easier

 

[AMANO9527]

OK, thanks for sharing adress bro
so bug statistics at CF94h, fish statistics at CF98h

So we just need:
1. Cancel a specific option before capturing (cancel easily captured)
like, bitterling 8A7, tiger butterfly 247
2. Use ACNH or HorizonCrypt to export personal.dat
Change CF94h and CF98h to 4F (79), then import
3. this should work

I am testing this step

It still has some bugs
I will report it later

 

[DestinyFeather]

Berry nice
DIY hex editing until Kaphotics saves us all.

 

[AMANO9527]

View attachment 201561
I think this is where it is in the save file

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

View attachment 201562
and the 11 I have my cursor on currently is most likely the bug one
save file needs to be decrypted first with https://github.com/Cuyler36/HorizonCrypt
so you just open up command prompt
paste your save folder into the horizoncrypt exe folder
cd "path/to/your/horizoncryptexe"
paste
HorizonCrypt -b -d ./
and hit enter
everything decrypts, you make your changes
then
HorizonCrypt -b -c ./
hit enter
everything encrypts
paste save folder to wherever it came from

Berry nice
DIY hex editing until Kaphotics saves us all.

I tested it, it will return to the original value after you capture a new one
So we still have to find other flags

 

[DestinyFeather]

I tested it, it will return to the original value after you capture a new one
So we still have to find other flags

Doesn't it just let you hit the claim button when you set it to max?
But wow, if it doesn't let you edit the number on top of this, on top of the received list/critterpedia filling that's some crazy requirements for achievements.

 

[AMANO9527]

So the new step is
1. Cancel a specific option before capturing (cancel easily captured)
like, bitterling 8A7, tiger butterfly 247
2. Capture them in the game (I just want to get a trigger)
3. Use ACNH or HorizonCrypt to export personal.dat
Change CF94h and CF98h to 50 (80), then import
4. this should work

Doesn't it just let you hit the claim button when you set it to max?
But wow, if it doesn't let you edit the number on top of this, on top of the received list/critterpedia filling that's some crazy requirements for achievements.

 

[DestinyFeather]

I've noticed that sometimes the game autosave can ruin my (admittedly ram related) edits too. (Where it doesn't save properly and go back). Although if it happens with a save file edit....

 

[Suill]

Does anyone know why the count for these items become single ingame?

 

[Philipzou]

View attachment 201576



Does anyone know why the count for these items become single ingame?

you need to minus one,9 will be displayed as 10 ingame,it`s a bug currently.

 

[Luana91]

Gold recipe was 5794, who are now? I downoalded last version of NHSE

 

[Max89]

View attachment 201576

don't know but..how con you change layout of nhse with list?

 

[Globodus]

https://pastebin.com/B8N5KKsh

DIY recipes are missing, is there a list with DIY recipes ids?

 

[Sapphire01]

I applaud y'all for all of the cheat stuff y'all do. I just rely of save editors lol.

 

[Max89]

Guys, what script do you use for inject the savedata into de encrypted one? I only have one I used with Pokemon SwSh

"
hactoolnet.exe -k prod.keys -t save 000000000000001c --replacefile /main out/000000000000001c/main
"

But I don't know how can I use it for AC. ;_;

same problem i had.
I menaged to solve changing the inject file with this:

hactoolnet.exe -k prod.keys -t save save/00000000000000XX --repack out/00000000000000XX/

XX:your file number and/or letter
dont know why but It works

 

[DestinyFeather]

Gold recipe was 5794, who are now? I downoalded last version of NHSE

All the recipes are 5794 (now referred to as recipe by the new NHSE), they just count up I think. And the easter recipes are after the gold recipes and many other recipes are before the gold recipes.

292 - Golden Net
293 - Golden Water Can
294 - Golden Shovel
295 - Golden Slingshot
296 - Golden Rod
297 - Golden Axe

Or you can just tick the recipes in NHSE

 

[Max89]

All the recipes are 5794, they just count up I think. And the easter recipes are after the gold recipes and many other recipes are before the gold recipes.

292 - Golden Net
293 - Golden Water Can
294 - Golden Shovel
295 - Golden Slingshot
296 - Golden Rod
297 - Golden Axe

Or you can just tick the recipes in NHSE

in the new version is changed: is DIYrecipe (unused)