[Tutorials] Written by me

[4m8IoN]

Originalmente inviato da ProjectVII

how would you find the address where you can compare the button codes to it? Say, like pressing L + select to activate a cheat?

I don't really know what you are asking for...
Let's give it a try anyways:

You certainly want to do something using Joker Codes
You might be looking for this Button Codes

And maybe this Joker Code Question will show you how they are supposed to work

[jungletek]

Originalmente inviato da 4m8IoN

In most cases the different languages are the cause for the differences.
The Games usually load some plain readable text into memory.
ie Card/Item/Equipment/Character/whatever lists
(Japanese text is of course not readable unless you speak UTF8 fluently)

The US differs from the Japanese because of the different word lengths after translation.
The EU differs from US & J because of multiple lists being stored in RAM at the same time.

If a game has the same adresses in any version it's usually because
1. no text whatsoever is loaded into RAM
2. the data part is stored at the top of RAM with no text above
3. there is only one language in all versions
4. there are all translations present in all versions

I hope that clears up a few things

Hey thanks for the schooling!

[ProjectVII]

I've been searching around and I would like to know how the monster hp viewing cheat works for monster hunter freedom 2.. if someone could explain it to me, I would be very grateful.

[4m8IoN]

MH2G Display HP Hack is actually not really a Cheat.
Depending on the Version only 4 to 8 Lines are actually usefull CWCheat Codes.
The rest is ASM (Assembler) Code that gets dumped in a place in RAM

The hack works by hijacking a jump instruction in the game code.
It gets replaced with a jump instruction to the previously positioned ASM instructions.

In more detail:
The Game has 2 bytes that indicate if you press a certain Button Combination.
If you press L+Select in game, the bytes change to 0101
If you press R+Select in game, the same bytes change to 0201
With a 16bitEqual Compare-CWCheatCode the hack uses CWCheat Codes to monitor this adress.
If the conditions are met it then replaces the jump instruction.

Therefore code injection takes place and the game executes the custom code.

A real awesome & creative use of CWCheats!

[ProjectVII]

well damn... that's pretty complex. I was hoping it would've been easier. So much for me trying to figure it out, now I hope someone else gets it done soon for Unite

[jungletek]

Originalmente inviato da ProjectVII

well damn... that's pretty complex. I was hoping it would've been easier. So much for me trying to figure it out, now I hope someone else gets it done soon for Unite

It's not that complex. I've been doing some code injection with win32 games, and once you grasp the assembly code, it's quite easy.
Although the PSP has an ARM(?) CPU, so the opcodes look a little funky to me... but a reference sheet should be all you'd need (and your brain) to work it out.

If you want more info on code injection and assembly language as it pertains to hacking games, check out World Of Game Hacking.

[4m8IoN]

Some good points to start:

This reference on mips instructions

And if you need more info on the actual processor arcitecture:
R4400 Manual - similar to the Allegrex CPU contained in the PSP
NEC VR5432 Manual - contains Info on the Debug Registers which are appearently also present in the Allegrex Core
(taken straight from the Home of the Hitmen)

For the actual analysis process this tool will most likely become your best friend

[realstyla]

this helped alot dude.. !!!

[qnzboi102]

how do you convert codes from different regions like from japan to the us

[gangstamalu]

Tutorial: How to edit your cheat DB. Adding/Removing Cheats
Tool(s) used: Word Pad

First locate your cheat DB. It is located in seplugins-->cwcheat-->cheat.db


Then open with Word Pad (not mircosoft word) or Note Pad.
Yours may not be located in recommended. Just look through the list.

Click Ok

Start editing


Remember to save.

Enjoy!

Inspired by people who pushed hard enough in a certain thread.

Special thanks to 4m8IoN
I know we butted heads alittle in the past but YOU ROCK.