Building NTR custom firmware cheat plugins w/ cheat menu

Rhapsody · Jan 20, 2016

So more like this?

Code:

void freezeCheatValue() {
   // Freezes money at 9999 until cheat is disabled. Change value by changing second hex entry.
   if (cheatEnabled[0]) {
     WRITEU16(0x149997D0, 0x0000270F);
   }
   // All enemies drop their items upon death.
   if (cheatEnabled[1]) {
     WRITEU16(0x17D99848, 0xE1D11AB2);
     WRITEU16(0x17D9984C, 0xE3510000);
   }

supermariorick · Jan 20, 2016

Rhapsody said:

So more like this?

Code:

void freezeCheatValue() {
   // Freezes money at 9999 until cheat is disabled. Change value by changing second hex entry.
   if (cheatEnabled[0]) {
     WRITEU16(0x149997D0, 0x0000270F);
   }
   // All enemies drop their items upon death.
   if (cheatEnabled[1]) {
     WRITEU16(0x17D99848, 0xE1D11AB2);
     WRITEU16(0x17D9984C, 0xE3510000);
   }

nope. that still has them in the brackets.
they should be outside of brackets where scripts are called.

Rhapsody · Jan 20, 2016

supermariorick said:
nope. that still has them in the brackets.
they should be outside of brackets where scripts are called.

Gotcha, I'll try compiling it without the comments for now to see how it works.

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

So using the code that I mentioned before is still causing the game to crash after trying it out. Here's the full code; http://pastebin.com/jzUs4Mt3

I still have some of the codes left from the example file, but that's to replace and for reference. I'm not actually using them and it shouldn't matter if they're just there. Point is, I edited the first and second one to be a money hack and a unit drop hack. The money hack works perfectly, but the unit drop hack causes the game to crash.

supermariorick · Jan 20, 2016

Rhapsody said:
Gotcha, I'll try compiling it without the comments for now to see how it works.

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

So using the code that I mentioned before is still causing the game to crash after trying it out. Here's the full code; http://pastebin.com/jzUs4Mt3

I still have some of the codes left from the example file, but that's to replace and for reference. I'm not actually using them and it shouldn't matter if they're just there. Point is, I edited the first and second one to be a money hack and a unit drop hack. The money hack works perfectly, but the unit drop hack causes the game to crash.

the unit drop hack is an ASM code meant for spider ARcode and not NTR cheat codes. you'd have to find the ASM code again in NTR debugger.

Rhapsody · Jan 20, 2016

supermariorick said:
the unit drop hack is an ASM code meant for spider ARcode and not NTR cheat codes. you'd have to find the ASM code again in NTR debugger.

I'm probably not going to bother doing that, but can you describe what that might entail? Is there any way to explicitly tell if a code uses ASM code?

I'd love to say that multi-line codes have been working for me so far, but they haven't been, and without a way to identify if it's ASM code or not I can't really tell if I'm doing something wrong. I'm trying this code now;

Code:

// x64 EXP multiplier
03E77A5C E1A04301
03E77A60 E3540064

I converted it to NTR format and now it looks like this;

Code:

  if (cheatEnabled[1]) {
     WRITEU16(0x17E77A5C, 0xE1A04301);
     WRITEU16(0x17E77A60, 0xE3540064);
   }

As an aside, I'm sorry about all the shit I'm asking and making you check. This is hopefully the last thing I'll need to know before I'm off. Your help has been invaluable; thanks!

gudenau · Jan 20, 2016

Ok, I hate to be mean; please don't take this wrong.

At this point, if you do not know C and the basics of the 3DS; you should not be building this.

Rhapsody · Jan 20, 2016

gudenaurock said:
Ok, I hate to be mean; please don't take this wrong.

At this point, if you do not know C and the basics of the 3DS; you should not be building this.

It's not that I'm looking to make giant commits or even help with the project itself. I'm basically trying to learn how to make these codes at all for personal use or perhaps to help others. At that point while knowing C would definitely be useful, a lot of my questions stem from the utter lack of good documentation on this.

gudenau · Jan 20, 2016

Rhapsody said:
It's not that I'm looking to make giant commits or even help with the project itself. I'm basically trying to learn how to make these codes at all for personal use or perhaps to help others. At that point while knowing C would definitely be useful, a lot of my questions stem from the utter lack of good documentation on this.

There are a few posts about comments in the code, which by definition do nothing to the outputted binary. The problem your having is not related to the coments, I did not catch what game you are using; might be able to assist some.

Rhapsody · Jan 20, 2016

gudenaurock said:
There are a few posts about comments in the code, which by definition do nothing to the outputted binary. The problem your having is not related to the coments, I did not catch what game you are using; might be able to assist some.

The problems I'm having are detailed in my previous posts; the comments discussion was simply because it was brought up. The game is Fire Emblem Awakening.

DarkFlare69 · Jan 20, 2016

supermariorick said:
I have already requested @DarkFlare69 make one via PM and gave full permission to him to use it.

I'll try to get it done today

gudenau · Jan 20, 2016

Rhapsody said:
The problems I'm having are detailed in my previous posts; the comments discussion was simply because it was brought up. The game is Fire Emblem Awakening.

Yeah, don't have the game; can't really help any more than GCC can.

DarkFlare69 · Jan 20, 2016

I noticed a small issue. The directory is actually /plugin/, not /plugins/

Purple_Heart · Jan 20, 2016

can someone upload a compiled build because i cant install devkitpro (installer wont start)

gudenau · Jan 20, 2016

Cenk Akbaba said:
can someone upload a compiled build because i cant install devkitpro (installer wont start)

Why won't it start?

Purple_Heart · Jan 20, 2016

if i doubleclick it nothing happens

DarkFlare69 · Jan 20, 2016

Finished video, saving and uploading!

DarkFlare69 · Jan 20, 2016

Cenk Akbaba said:
can someone upload a compiled build because i cant install devkitpro (installer wont start)

You need to configure the god damn cheats yourself. if someone uploaded a compiled version it wont have what u want.

Here is the video @supermariorick!

Purple_Heart · Jan 20, 2016

ah now i understood i have to stick with gateway cheatmenu instead xD

supermariorick · Jan 21, 2016

DarkFlare69 said:
You need to configure the god damn cheats yourself. if someone uploaded a compiled version it wont have what u want.

Here is the video @supermariorick!

thanks bruh. you're a boss. and that mistake with the folder was my bad. also to everyone please disregard what I said about putting multiple lines in the code. I tested it and I think I didn't do that right. I am still trying to get the format for codes down for the plugin and I had no idea how that works and still don't. if there's anything more and I don't know it then ask @cell9 or @DarkFlare69 instead.

gudenaurock said:
Ok, I hate to be mean; please don't take this wrong.

At this point, if you do not know C and the basics of the 3DS; you should not be building this.

i like what you said but in cases like this I am going to have to disagree as any script kid can do this as long as it isn't complicated shit like ASM or adding special things to the cheat menu. however I agree that to do the most with it that you'd have to know C and how the ARM/MIPS architecture of the 3DS works. but I designed this basic tutorial for anyone who wants cheats on 3DS in NTR CFW and knows nothing about C. I was able to build a very simple cheat plugin myself minus the more complicated features not known to those uneducated in C. the plugin works but I'm not pretending to know how all of it works just the basic steps of making simple plugins. I appreciate any positive criticism so when more complicated things are addressed they can be approached properly by people that actually know how to code C. As soon as I got a plugin working I decided to make a tutorial as I couldn't find one anywhere - at least not one up to date and not missing information. criticism is welcome and encouraged so everyone can make their plugins so we don't have to rely on a barely navigateable Chinese website and a Spanish website with outdated half-working plugins to get codes for games.

Lyomak · Jan 21, 2016

supermariorick said:
don't ask me how to convert from Gateshark as I do not have a Gateway; however usually spider arcode to NTR code is +0x14000000 unless the memory addresses for NTR for a game are out of range from the addresses for spider arcode due to physical memory addresses vs virtual memory addresses. as for codes more than one line long, the old source code has an example

if (cheatEnabled) {
// freeze hearts
WRITEU16(0x168b6044 , 0x5050);
// freeze rupees
WRITEU16(0x168b5fa8 , 9999);
}

Hello. Can this Spider AR code be converted to NTR? How do you convert the codes, I can't understand the +0x14000000 and what to do with it, but I'm a good learner.

Code:

StreetPass Mii Plaza NTSC-U 4.0

99 Plaza Tickets
0176CF90 00000063
027FD9F6 00000063

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