kartdlphax - A Mario Kart 7 semi-primary exploit
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kartdlphax is a semiprimary exploit for the download play mode of Mario Kart 7. It can be used to run an userland payload in an unmodified 3DS by having it connect through download play to another 3DS with Custom Firmware running the exploit.

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Installation
The exploit uses a 3GX Plugin in the host system. Therefore, in order to use this exploit you need to install the 3GX Loader Luma3DS fork.

In the host console, place the .3gx file from the Releases page in the following directories depending on your game region:

• EUR: luma/plugins/0004000000030700
• JAP: luma/plugins/0004000000030600
• USA: luma/plugins/0004000000030800

By default, the plugin will use the built-in otherapp payload (universal-otherap). You can place your own otherapp at /kartdlphax_otherapp.bin, but keep in mind that the hax 2.0 otherapp doesn't work currently.

Usage

1. On the host 3ds, make sure the plugin loader is enabled from the Rosalina menu (L+Down+Select), then launch the Mario Kart 7 game matching the region of the client 3ds(es). (You will see a confirmation message in the top screen once the game launches).
   
   
2. On the client 3ds(es), launch the download play application.
   
   
3. On the host 3ds, select Local Multiplayer then Create Group. After that, let the client 3ds(es) join the group.
   
   
4. Once the multiplayer menu loads on the host 3ds, select Grand Prix then 50cc then any driver combination and finally the Mushroom Cup. After a while the exploit will trigger on the client 3ds(es).

Keep in mind that while you can send the exploit to 8 consoles at the same time, the success rate seems to decrease for each console added.

Source & Download

Credits

• 3ds ropkit (by yellows8).
• universal-otherapp (Copyright (c) 2020 TuxSH).
• CTRPF (by Nanquitas).
• nitpic3d's developer luigoalma for his huge help.
• Kartic for his huge help and all the people from his development discord server.

 

[peteruk]

The 3DS lives

Great work mate, very well played

 

[templeofhylia]

nice!

 

[KiiWii]

Wow that’s impressive! Nice work!

 

[frecklebars]

so glad whenever a new 3ds exploit gets discovered
good job!

 

[E1ite007]

From creating custom tracks, to developing exploits.
Really cool fam!

 

[Mythical]

that's awesome

 

[FanNintendo]

Amazing!

 

[I_AM_L_FORCE]

Couldn't this be used in malware Brickers?

 

[shorty_bobert]

The potential to hack 8 3DSes at once, while something I will never have an opportunity to do, gets me hard.

 

[BitMasterPlus]

Mmm maybe I'll actually play Mario Kart 7 now lol

 

[PabloMK7]

Couldn't this be used in malware Brickers?

This and any other exploit can be used in a malicious way.

so glad whenever a new 3ds exploit gets discovered
good job!

Well, I found this exploit 2 years ago and got stuck, but finally decided to finish it with the help of others.

 

[livid_hen]

Hey does this mean there would be a way to play custom ctgp-7 maps with unmodded users?

 

[raxadian]

This is awesome. I should try it one day.

 

[phalk]

Aren't you the guy who made an NTRboot icon a while ago?
Good job!

 

[DKB]

That's really cool.

 

[HRudyPlayZ]

Great job!!!

Aren't you the guy who made an NTRboot icon a while ago?
Good job!

more importantly he's the guy who made CTGP7

 

[nWo]

Awesome, a great and convenient way to hack 3DS. Thank you.

 

[slimbizzy]

i'd use this. much easier

 

[Deleted User]

I already have the 3GX loader fork. YAY!