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How to find the gravity address in 3D games and disable it
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coolman++
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PostPosted: Fri Jul 27, 2012 3:31 pm    Post subject: How to find the gravity address in 3D games and disable it Reply with quote

Quiet easy. First, scan for the Z-coordinates of your character (google a full guide, I'll give a short guide). Hit unknown initial value float, jump and pause, scan increased, resume and fall back down, scan decreased (If you can't jump then: climb a ladder, scan increased, climb down, scan decreased).

Once you find your Z-coordinates, eliminate them by changing all their values one by one and checking which one affects your character. When you have just that one address, carry on to the next paragraph.

Now when you are in game, jump and pause the game (if you can't pause speedhack at 0x). Now right click your Z-coordinate address in the CE table, click find out what writes to this address, then resume the game, JUST WHEN YOU ARE ABOUT TO FALL, pause again. You should see only one opcode change, add it to the codelist and replace it with "code that does nothing".

NOTE: Not only will your gravity be disabled, but your jump and acceleration will as well. So you should assign a hotkey to increase the Z-coordinates address by about 30, so when you disable gravity you can still "jump".

NOTE2: Anyone got a better method? POST IT BELOW! Very Happy
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Gaz
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PostPosted: Thu Aug 09, 2012 11:19 am    Post subject: Reply with quote

i did this for an fps game and got stuck high up and wasnt able to move
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coolman++
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PostPosted: Thu Aug 09, 2012 9:28 pm    Post subject: Reply with quote

Gaz wrote:
i did this for an fps game and got stuck high up and wasnt able to move


you mean movement keys stopped working? what game is this?
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Gaz
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PostPosted: Sat Aug 11, 2012 11:10 am    Post subject: Reply with quote

Its left for dead 2 if you want a screenshot of me nopping z coordinate i can do it
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coolman++
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PostPosted: Sat Aug 11, 2012 10:58 pm    Post subject: Reply with quote

Gaz wrote:
Its left for dead 2 if you want a screenshot of me nopping z coordinate i can do it


don't nop the z coordinate! nop the gravity address!
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Gaz
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PostPosted: Sun Aug 12, 2012 2:35 am    Post subject: Reply with quote

well check here i put my speed to 0.5 jumped highest paused went on z coord and right clicke find what writes to address and then let game unpause then pause quick and noped what i got like you said that is the only thing there is the z co ords and if i browse the memory i see my y and x too
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coolman++
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PostPosted: Sun Aug 12, 2012 5:36 pm    Post subject: Reply with quote

Gaz wrote:
well check here i put my speed to 0.5 jumped highest paused went on z coord and right clicke find what writes to address and then let game unpause then pause quick and noped what i got like you said that is the only thing there is the z co ords and if i browse the memory i see my y and x too


maybe there is no gravity address then and you can either just find jump height OR freeze Z-axis while in air. weird... I need to download this game i guess
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Gaz
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PostPosted: Mon Aug 13, 2012 2:20 am    Post subject: Reply with quote

Ok good plan ill try them both i know the jump is around the base address of the health
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mgr.inz.Player
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PostPosted: Mon Aug 13, 2012 3:49 am    Post subject: Reply with quote

In xrayEngine based games (STALKER), you can search for X Y and Z speed vectors (they are close to X Y and Z coordinates).

X,Y - are horizontal speed vectors
Z - is vertical speed vector

Find Z vector address.
Do "find out what access this address", then do AA script.
If vertical speed vector drops below -8, write to this address -8. You must find right value on your own, for example in STALKER you can fall with -8 speed without damage.

pseudo-code:
if (Zspeedvector < -5.0) then begin; Zspeedvector:=-5.0; end;

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coolman++
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PostPosted: Mon Aug 13, 2012 8:17 pm    Post subject: Reply with quote

mgr.inz.Player wrote:
In xrayEngine based games (STALKER), you can search for X Y and Z speed vectors (they are close to X Y and Z coordinates).

X,Y - are horizontal speed vectors
Z - is vertical speed vector

Find Z vector address.
Do "find out what access this address", then do AA script.
If vertical speed vector drops below -8, write to this address -8. You must find right value on your own, for example in STALKER you can fall with -8 speed without damage.

pseudo-code:
if (Zspeedvector < -5.0) then begin; Zspeedvector:=-5.0; end;


thank you

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cheech
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PostPosted: Fri Aug 17, 2012 10:47 am    Post subject: Reply with quote

Some modern games fixed that issue , of the Z coordinates being easly found (not talking about what has been posted here ) ... but you can still find it if you look hard for it usually some Lines above the WHATS WRITING OR ACCESSING THIS Z Or X or Y Coordinate

REMEMBER ITS EASIER TO SEARCH FOR X,Y FIRST THEN JUST LOOK AT THE DISSECT CODE SECTION of THAT ADDRESS TO FIND THE Z !!!!!!!

For example ... if you find what address accesses the z/x/y coordinates look above..usually you will find somethin like this :

je 3403043
mov [esi+48],eax
mov [esi+54],eax
mov [esi+5c],eax
mov [esi+60],eax
mov [esi+6C],eax
4304043 > asm continues...

REMEMBER THE ABOVE IS AN EXAMPLE !!

So if you find what accesses your Z coordinates check the asm above it like see what happens in the next 256 lines above the code you found.;..and check ALL je 's .... see if you changin them to JNE will make you freeze....

Lots of engines now coming diffrently....

Cheers !
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JustAnonymus
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PostPosted: Mon Nov 19, 2012 2:44 pm    Post subject: Reply with quote

How can I do it in Games like NFS. I cant climb And Jump there.
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KoHx3
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PostPosted: Thu Nov 22, 2012 9:34 pm    Post subject: Reply with quote

Thats a bit annoyin' - i can't find it in Garrys Mod :d arrrrw
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AshleyWarren
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PostPosted: Sun Dec 23, 2012 7:10 am    Post subject: Reply with quote

JustAnonymus wrote:
How can I do it in Games like NFS. I cant climb And Jump there.


Drive up and down a hill should work. Just need to change your elevation somehow.
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++METHOS
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PostPosted: Tue Jan 15, 2013 2:38 pm    Post subject: Reply with quote

Thanks for the tutorial, coolman++.

Here is my progress so far...

Family Guy: Back to the Multiverse (skidrow release)

When I nop the gravity address (or, what I think is the gravity address), my results are flip-flopped. IE instead of losing gravity, I can't move, and my gravity values are gone. I can run and jump, but none of my xyz coordinates change.

Any ideas?

I'll keep looking...

Thanks.
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