[IDA Tutorial] How to deal with/hack vectors

[Taotaka 41 iPad Air]

Thank you

[minhsangd 140 iPad Mini 4 14.7.1]

Thanks!

[Tata Huft 2]

Thank you for share

[klashksa 834 iPhone 9.0.2]

Nice 

[olezha85 0 iPhone 7 11]

thanks !

[candan 0 iPhone 9.1]

nice

[Mr pringles 0]

Thanks for the tutorial, currently dealing with this.

[Aburak99 2 iPhone 6 10.2]

Thanks

[ShiroKami57 0]

Hi shmoo

Your tutorial about hacking vectors on IDA its really lifesafer.

but i really need help, because after reading your tutorial and read the comment section there's something i want to ask.

So i have this code

VLDR               S0, [R6]

VLDR               S2, [R0, #0xC8]

VADD.F32       S0, S2, S0

VSTR                S0, [R0, #0xC8]

I've already try to change 

VLDR               S2, [R0, #0xC8]

to

VMOV.F32      S2, #31.0 

and its worked, thanks to your guide. but is there any other way to hack this except changing the VLDR?? @shmoo

Updated January 16, 2018 by ShiroKami57

[Guest]

2 hours ago, ShiroKami57 said:

Hi shmoo

Your tutorial about hacking vectors on IDA its really lifesafer.

but i really need help, because after reading your tutorial and read the comment section there's something i want to ask.

So i have this code

VLDR               S0, [R6]

VLDR               S2, [R0, #0xC8]

VADD.F32       S0, S2, S0

VSTR                S0, [R0, #0xC8]

I've already try to change 

VLDR               S2, [R0, #0xC8]

to

VMOV.F32      S2, #31.0 

and its worked, thanks to your guide. but is there any other way to hack this except changing the VLDR?? @shmoo

Yeah, you can change the instruction after it to VMUL.F32 S0, S2, S2 (s0=s2*s2)