Help/Support [IDA] Is this Function Hackable?

[Ted2 39.2k Donor]

I'm here again...

 

Someone told me to practice with an old version of Candy Crush because this would be "easy"...

I thought this function is hackable:

 

I did this:

; _DWORD __fastcall CSaveData::SetNumLives(CSaveData *__hidden this, int)
EXPORT _ZN9CSaveData11SetNumLivesEi
_ZN9CSaveData11SetNumLivesEi
STMFD           SP!, {R4-R6,LR}
MOV             R4, R0
LDR             R6, [R0,#0x29C] --> LDR R6 [R7,#0x29C]
MOV             R5, R1
BL              _ZN9CSaveData14GetNumMaxLivesEv ; CSaveData::GetNumMaxLives(void)
CMP             R6, R0
BLT             loc_F4DC0

loc_F4DC0
STR             R5, [R4,#0x29C] --> STR R7, [R4,#0x29C]
LDMFD           SP!, {R4-R6,PC}
; End of function CSaveData::SetNumLives(int)

I though this would be it because the LDR function tells #0x29C and so does the STR function.

 

Results: after playing one level it gave me a negative number of lives...

 

any help?

[sn0wqt 42.7k]

pm me

[Rook 568.5k Pixel 14 Donor]

You can mshook that.

 

And are you sure the lives are minus? Or is the value too large to fit on screen?

[castix 18.5k Android Sucks 1.0]

Why do you ask us and don't test it?

 

Yes it is

[Ted2 39.2k Donor]

You can mshook that.

 

And are you sure the lives are minus? Or is the value too large to fit on screen?

mshook on a android .so?

 

and yes, I am sure. I tried playing a level and it says not enough lives

Why do you ask us and don't test it?

 

Yes it is

I already tested it, I already told you the results so....

[Rook 568.5k Pixel 14 Donor]

mshook on a android .so?

 

and yes, I am sure. I tried playing a level and it says not enough lives

I already tested it, I already told you the results so....

Oops

[Ted2 39.2k Donor]

Oops

Hahah np...

[CmakLove 9.7k]

MOV R0, R7

BX LR

The first funtion

[Ted2 39.2k Donor]

MOV R0, R7

BX LR

The first funtion

why would that work? will try but..

 

edit: crashes the game.

Updated June 29, 2016 by xShadowGhostx

[CmakLove 9.7k]

why would that work? will try but..

 

edit: crashes the game.

i did this with the mods i posted here (SAS3, Terraria)