Homebrew Clarification Thread - What is going on?

[DKB]

Uh, sorry if i was inaccurate about the ~65% thing. i got it from someone else who posted. they said the exploit code is 65% done.

Which exploit? The one 2% care about or the important one?..Joking, but which one?

 

[Substance12]

Which exploit? The one 2% care about or the important one?..Joking, but which one?

memchunkhax2.

 

[Wolf_Lovel]

Which exploit? The one 2% care about or the important one?..Joking, but which one?

the memchunkhax2 exploit. if i remember correctly

 

[Bull Moose 2016]

Hey, I'm not really a 3ds programmer guy, although I am a professional developer, and in watching the video again and reading through your guys' source code, I noticed that you are allocating only one kernel object, modifying its attributes to contain a memchunk header (exactly as described in the video) but then you seem to have the intention of overwriting the vtable pointer of that single allocated object. I'm not sure that makes sense. The memchunk header you are allocating against occurs after the vtable pointer, so unless I'm mistaken, that first vtable pointer isn't part of the memory that's being mapped to userland and you aren't going to be able to overwrite it.

Instead, I think you need to create multiple kernel objects as shown in the video, and you can only overwrite the vtable pointers on the other objects which got swept up in the allocation from the first one.

There's a slide in the video where derrek highlights the slab heap in red that shows what I'm talking about pretty clearly.

 

[Substance12]

Hey, I'm not really a 3ds programmer guy, although I am a professional developer, and in watching the video again and reading through your guys' source code, I noticed that you are allocating only one kernel object, modifying its attributes to contain a memchunk header (exactly as described in the video) but then you seem to have the intention of overwriting the vtable pointer of that single allocated object. I'm not sure that makes sense. The memchunk header you are allocating against occurs after the vtable pointer, so unless I'm mistaken, that first vtable pointer isn't part of the memory that's being mapped to userland and you aren't going to be able to overwrite it.

Instead, I think you need to create multiple kernel objects as shown in the video, and you can only overwrite the vtable pointers on the other objects which got swept up in the allocation from the first one.

There's a slide in the video where derrek highlights the slap heap in red that shows what I'm talking about pretty clearly.

This is not really the place for this, go post it on the repo

https://github.com/Steveice10/memchunkhax2/issues

 

[Bull Moose 2016]

Thanks for the link. I looked through one of the earlier issues on there and they've already figured that out, so I guess I'm late to the party as usual.

 

[Substance12]

Thanks for the link. I looked through one of the earlier issues on there and they've already figured that out, so I guess I'm late to the party as usual.

It's the thought that counts.

 

[Mrrraou]

It's the thought that counts.

I think it is the right place. We are reading the topic, too.

 

[Substance12]

Ok, so, last question. Before downgrading it's pretty obvious i'll have to uninstall menuhax, right?

 

[Mrrraou]

Ok, so, last question. Before downgrading it's pretty obvious i'll have to uninstall menuhax, right?

I think that there will be an easy way to do it:

• Remove the SD card while booting
• Put the SD card back
• Switch theme to a colored one and switch back to default

And that's done.

 

[bbcali89]

I'm so excited to see this happen. It feels like the psp scene all over again. downgrading n shit lol

good work guys

 

[BurningDesire]

I'm stuck on 10.3 ;( sucks I gotta wait for memchunkhax

 

[MegaBoyEXE]

Ok, so, last question. Before downgrading it's pretty obvious i'll have to uninstall menuhax, right?

Well, I would advise to do it.
Maybe this is not your case if did not intend to use CFW at all, but I had some problems when I did a 10.3 w/ menuhax sytem transfer to a emuNAND.
I was caught in an infinity boot loop between sysnand (already with 9.2 w/ menuhax) and the emunand also having menuhax, because I could not remove SD card during emunand boot, for obvious reason.
It took some time to figure out a way to properly boot emunand and uninstall it's unecessary menuhax.

 

[bbcali89]

I'm stuck on 10.3 ;( sucks I gotta wait for memchunkhax

You can still use ironhax/ocarina of time exploit.

 

[BurningDesire]

You can still use ironhax/ocarina of time exploit.

I know and I do. I just want cfw and emunand haha

 

[Substance12]

I'm stuck on 10.3 ;( sucks I gotta wait for memchunkhax

If you mean to downgrade and if you had a n3DS, you would've had to wait for memchunkhax2 anyway because snshax is not being worked on anymore.

If you mean to access homebrew, you can use the new browserhax.

 

[DKB]

Would ironhax be good for downgrading from 10.3 to 9.2?

 

[bbcali89]

If you mean to downgrade and if you had a n3DS, you would've had to wait for memchunkhax2 anyway because snshax is not being worked on anymore.

If you mean to access homebrew, you can use the new browserhax.

he might be referring to kernel abilities like cias etc.

 

[BurningDesire]

If you mean to downgrade and if you had a n3DS, you would've had to wait for memchunkhax2 anyway because snshax is not being worked on anymore.

If you mean to access homebrew, you can use the new browserhax.

Why isn't it be worked on? Also how is your game going?

 

[Mrrraou]

Well, I would advise to do it.
Maybe this is not your case if did not intend to use CFW at all, but I had some problems when I did a 10.3 w/ menuhax sytem transfer to a emuNAND.
I was caught in an infinity boot loop between sysnand (already with 9.2 w/ menuhax) and the emunand also having menuhax, because I could not remove SD card during emunand boot, for obvious reason.
It took some time to figure out a way to properly boot emunand and uninstall it's unecessary menuhax.

No; don't ever remove menuhax. I gave instructions to remove it when downgraded.

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Would ironhax be good for downgrading from 10.3 to 9.2?

Any *hax is.