ARM Patching (ADVANCED)

[LTC]

8 hours ago, XEKEX said:

chỉnh sửa địa chỉ 9936C000 ( lệnh đẩy ) thành MOVW R0, #999
chỉnh sửa địa chỉ bên dưới nó (ADD R11 SP #16 ) thành BX LR

 One more thing, can I edit the command "MOV R5,R0" to "MOVW R0, #999" ? , Thank you

[XEKEX]

12 hours ago, LTC said:

 One more thing, can I edit the command "MOV R5,R0" to "MOVW R0, #999" ? , Thank you

no need because we end the function with bx lr :
editing push instruction with movw r0, #999 followed by bx lr in the next instruction is like we create a new function code : 
 

int new() {
return 999;
}

the remain instrunction are useless the proccessor won't read them

[tryingbetter]

Hi guy, i'am trying to undertand with GG by XA value, Could you explain for me about some armx64opcode like this?