Hacking Sequential codes PSX

[jin299]

Helder in order for the music modifier to work do I use player 1 or player 2?

[Helder]

You mod player 2.

[jin299]

Okay, hey Helder are you familiar with hacking the game Tomb Raider 3 because there's a hacking related question I want to ask you about this game how was this code hacked for the game?

Use Quad Bike In Lara's Home

801B7B04 0000
801B7B06 0001
801B7B24 C53B
801B7B2C B9D4
801B7B32 802D
801B7B44 0A1C
801B7B48 F4EA
801B7B4C FA73
801B7B60 1F1F
801B7B62 371F
801B7B82 0022

[Helder]

I never played or hacked any tomb raider, try asking the hacker who made it or jeez I dont know maybe inspect the address in a memory viewer and make educated assumptions. Go to the area that normally has the quad and look at all the addresses and take notes on each ones value the go to laras room and see whats different.

[jin299]

The hacker who made the code goes by the name JollyRoger, but the problem is I have no idea on how to contact him?

Also at the moment im currently trying to hack an unlock all secret characters code, for the game Street Fighter Ex2, but the problem I'm currently facing is I have no idea on how to go about hacking the code correcly, is there any advice you can give on how I could hack this type of code for the game?

[olala]

Use artmoney or pec dood

[Helder]

Every advice I give you you end up coming back here with more questions but no real hands on. So in retrospect what can I tell you that isn't available anywhere on the net or you haven't thought of a possible theory on how to do it? Most games has a 16bit or 32bit value that covers secret characters or any unlockables, and this value goes from 0 to FFFF (in most games), it increases in value whenever you unlock something new. So TRY that theory and see what you get and don't respond back with more questions until you try that and any other method you might think will work.

[jin299]

I understand now there's something very important I have to ask you is this how I would go about putting a breakpoint on a code address, using the NOPSX debugger, please correct me if I did something wrong in my steps. I'll explain the steps I used to do it. Also for demonstration purposes I'll use the infinite health code, you see what I'm trying to do is manipulate the infinite health code. simply through basic ASM.

First I opened up the debugger, then pressed the Ctrl and G and then inputted the infinite health address 80194758 into the memory address box, next I ran the game and then got into a fight, then let the opponent hit me, next I immediately went to the debugger, and highlighted the infinite code address to set a breakpoint on, then the game froze, and a new batch of addresses displayed in the debugger, I then carefully scanned through the list of addresses and came across an address with nop, so I clicked it, and then it enabled a death hit code for player 2, I also tried the other addresses, but keeped on getting the same code?

[Helder]

Which game? and show pictures because I can't follow what your saying.Why are you doing ASM when you have a hard time doing standard codes? Were you even able to make the unlock code you were asking about?

[olala]

DOod what's asm?

[jin299]

Olala ASM is another method used in game hacking, but in order to hack your own codes using ASM you usually have to be reasonable knowledgeable in an computer language known as assembly computer code language, which basically is a low level computer programming language.

[jin299]

Helder I don't know how to upload a photo of the debugger on my computer so that I can show you, so I was hoping maybe you could explain to me how to correctly put a breakpoint on a code address using the NO$PSX debugger.

Now as for the unlock code your were talking about, there's still some things I'm unsure about, when it comes to hacking this type of code, so for now I'm going to avoid hacking the code for now, for the time being anyway.

[Helder]

Tell me the game and the address you were trying to hack into an ASM version.

[jin299]

The game I want to hack is Street Fighter Alpha 3, and I want to learn how to hack an simple ASM code like infinite health for player 1 for example or a death hit code, either one will do.

[Helder]

Bad example for a infinite health code in ASM, most fighting games if not all of them share routines for almost everything between the 2 players. So modifying the routine which uses a pointer to load the character's address into the registers and does the math and subtracts or adds (depends on programming) affects whom ever is loaded into that routine so it counts as P2 when his data is loaded into the registers and therefore he will have infinite health. This is why you almost never see ASM health codes for fighting games even on SNES and Genesis (I tried), and this applies to the other stats too so here is a great example of such an ASM code covering both Players (I tried this last week so already ahead of you in trying ASM HP).

Street Fighter Alpha 3

P1 & P2 Infinite SP (ASM)
80145274 2400