Arm64 and arm32 assembly help

[LaToM]

How to edit percentage value on arm 64 and arm 32 

@CmP

@BadCase

@XEKEX

Edited May 20, 2023 by LaToM

[XEKEX]

  On 5/20/2023 at 1:15 PM, LaToM said:

How to edit percentage value on arm 64 and arm 32 

@CmP

@BadCase

@XEKEX

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edit it as float or double depending on the data type of the percentage if it has a method
or if it's a const u simply edit the value without arm patching 
or if it's a void method pointer search that class and find the percentage value in that class ( calculate offset manually if it doesn't show on the dump file ) -> don't need arm patching either

Edited May 21, 2023 by XEKEX

[LaToM]

Thank you 

[MC874]

Hi @LaToM, percentage are operators, thus you just need to change the initial value, unless you're changing the result of that mentioned percents.

[LaToM]

  On 5/21/2023 at 9:47 AM, MC189 said:

Hi @LaToM, percentage are operators, thus you just need to change the initial value, unless you're changing the result of that mentioned percents.

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// RVA: 0x92E71C Offset: 0x92E71C VA: 0x92E71C Slot: 197
	public virtual float GetFireRate() { }

When i modify value the weapon stop shooting 

[AnKino]

  On 5/21/2023 at 11:14 AM, LaToM said:

// RVA: 0x92E71C Offset: 0x92E71C VA: 0x92E71C Slot: 197
	public virtual float GetFireRate() { }

When i modify value the weapon stop shooting 

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maybe you should modify that float in complex

[LaToM]

I tried with complex in badcase tool same problem,

And convert int to float same problem 

[AnKino]

  On 5/21/2023 at 6:35 PM, LaToM said:

I tried with complex in badcase tool same problem,

And convert int to float same problem 

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What is the game you're trying to modify mate

[XEKEX]

  On 5/21/2023 at 6:35 PM, LaToM said:

I tried with complex in badcase tool same problem,

And convert int to float same problem 

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I guess badcase tool patch it as an int thats why you get error consider checking the edits or do it manually
also respect every data type , edits with wrong code may cause game crush or system crush in some cases

Edited May 22, 2023 by XEKEX

[XEKEX]

  On 5/21/2023 at 11:14 AM, LaToM said:

// RVA: 0x92E71C Offset: 0x92E71C VA: 0x92E71C Slot: 197
	public virtual float GetFireRate() { }

When i modify value the weapon stop shooting 

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if patching still make the weapon stop shooting try negative value ( example -100% this might work)
and  make sure that method is related to the player class only cause you dont want rapid fire fo all entity I guess

Edited May 22, 2023 by XEKEX

[LaToM]

  On 5/22/2023 at 5:10 AM, XEKEX said:

if patching still make the weapon stop shooting try negative value ( example -100% this might work)
and  make sure that method is related to the player class only cause you dont want rapid fire fo all entity I guess

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I can't use float value more than 31 for arm64 ,so i tried -30 and it's work 

~A8 FMOV S0, #0xc1f00000

~A8 RET

And tried convert int to float with value -100 and its work

Thank you for your help

  On 5/21/2023 at 6:41 PM, AnKino said:

What is the game you're trying to modify mate

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Thank you man 

Solved 

[DARK_DEMON_SCRIPTER]

@XEKEX 

Do you have NOP assembly code for armv7a?

If yes can u give me?

[XEKEX]

  On 6/11/2023 at 9:51 AM, DARK_DEMON_SCRIPTER said:

@XEKEX 

Do you have NOP assembly code for armv7a?

If yes can u give me?

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@DARK_DEMON_SCRIPTER
The syntax of NOP can be used on in both MASM and ARMv7a

ARM7.pdf Ref Page 511

Edited June 11, 2023 by XEKEX