Help/Support Help with Code Inject

[NitroxicDemon 3.2k 8.1.2]

This is my first time attempting to code inject so can someone help me and tell me what to write in the Tweak.xm file and explain why.

 

I am hacking a SUB R0, R0, #1 Here is a pic from IDA

 

 

 

 

 

Here is the HEX value :

 

[Guest]

You first need the writeData header. Get it here: https://www.dropbox.com/s/ffr9t3w25noyxn3/writeData.h?dl=0

 

You put the file in your hack folder. Your Tweak.xm will be like this:

 

#include <substrate.h>
#include "writeData.h"

%ctor{
writeData(0x11E468, 0x0000A0E1);
}

This is if you want to NOP it.

 

In general, your Tweak.xm will be like this:

 

#include <substrate.h>
#include "writeData.h"

%ctor{
writeData(0xOFFSET, 0xINSTRUCTION);
}

Updated February 15, 2015 by Guest

[Guest]

Also, check out my Crossy Road hack Tweak.xm. It's code injection.

 

http://iosgods.com/topic/4376-cydia-substrate-code-injectioncrossy-road-tweakxm/

[NitroxicDemon 3.2k 8.1.2]

You first need the writeData header. Get it here: https://www.dropbox.com/s/ffr9t3w25noyxn3/writeData.h?dl=0

 

You put the file in your hack folder. Your Tweak.xm will be like this:

 

#include <substrate.h>
#include "writeData.h"

%ctor{
writeData(0x11E468, 0x0000A0E1);
}

This is if you want to NOP it.

 

In general, your Tweak.xm will be like this:

 

#include <substrate.h>
#include "writeData.h"

%ctor{
writeData(0xOFFSET, 0xINSTRUCTION);
}

Thanks man. Also how would you know whether to use 2byte code or 4byte?

[Guest]

Thanks man. Also how would you know whether to use 2byte code or 4byte?

When the hex is like 00 00 00 00 you use 4 byte.

When the hex is like 00 00 you use 2 byte.