If you can use the browser, I suggest that you use the new browserhax (up to 11.0.0-33!) in the meantime.

Try out Ubuntu 15.04: http://old-releases.ubuntu.com/releases/15.04/

This requires a New 3DS. The demo version doesn't work and is patched. If you have 1.1.3 or newer delete/disable the update data.
officially called smashbroshax sometimes smashax
Here is a new tool I call smashbroshax-helper. It is a graphical interface for the exploit which simplifies most of the process of broadcasting the packet. It requires almost no setup outside of creating a bootable Linux USB/DVD.

Important notes:

• This does not work on Fedora or Red Hat-based distributions because aircrack-ng needs to be compiled on it (and I can't figure out how to install the needed things).
  
• Don't use a virtual machine!
• This probably will never work on Old 3DS.

Download smashbroshax-helper beta

It is recommended that you use a live Ubuntu 15.04 image. Versions 15.10+ have issues. http://old-releases.ubuntu.com/releases/15.04/

1. Create a bootable USB/DVD with a Linux distribution (there are various guides online).
2. If possible, get a second USB/SD card/storage device, download and save the above .zip to it.
   • Don't extract the contents of it to the USB device, as it might cause problems. Just save the .zip file to it.
   • If you can't do this, you'll have to connect to the Internet while in Linux to download it.
   • If using a bootable USB, make sure you can use two ports at a time. Don't take out the Linux USB while it is being used!
3. Restart your computer and run the bootable USB/DVD you created.
4. Extract the contents of the .zip to the Desktop.
5. Open the smashbroshax-helper folder and double click "smashbroshax.sh".
6. Follow the on-screen prompts.
7. If everything goes well, you should now have homebrew!

Video demonstration, from boot to shutdown:

from https://gbatemp.net/threads/tutorial-using-smashhax-with-linux.397194/page-9#post-5842512

---

If you would like the full tutorial, involving terminal usage and compiling:

Spoiler: Everything

To reverse the changes to your wireless interface and remove issues connecting to networks after, rebooting your system or changing it to "Managed" instead of "monitor" should fix it. How to do that is in the second to last section.

---

@Cydget made a script that condenses most of this into a script. I have not tried it myself yet but it seems to work for others.

Spoiler

So, I made a little script for this. If anybody wants it, then unzip this file and read the readme. And yes, I like to pipe things. http://www.mediafire.com/download/oulnubnzkk9g3i0/smashhaxEZ.zip

---

Requirements

• Any Linux distribution should do (this has only been tested with Debian-based distributions). Windows and OS X users should wait or find a method for now, sorry!
  • Please do not use Linux in a virtual machine, it likely won't give direct access to your wireless card. Dual boot or use a live USB/disk.
  • The recommended distro to use is Ubuntu 15.04 (link to Ubuntu MATE 15.04).
• A Wi-Fi-capable wireless card.
• Super Smash Bros. for Nintendo 3DS Full or Demo.
• New 3DS. This does not work on Old 3DS.
• Patience. The hax is sort-of unreliable so your game will most likely crash a few times.
• Recommended: Another device to access the internet (phone, tablet, computer, console).

Preparing

• Install these packages using your package manager. For example, "apt-get" for Debian-based distributions (including Ubuntu).

  openssl libssl-dev libnl-genl-3-200 libnl-genl-3-dev libnl-3-200 libnl-3-dev pkg-config

• Find your wireless card's interface by opening a terminal and using the command "ip link". It would be something like wlan0 or wlp3s0.

  ian@ian-VPCEG34FX:~/Desktop/aircrack-ng-1.2-rc2/src$ ip link
  1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default 
      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
  2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
      link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
  3: wlan0: <NO-CARRIER,BROADCAST,ALLMULTI,PROMISC,NOTRAILERS,UP,LOWER_UP> mtu 1500 qdisc mq state DORMANT mode DORMANT group default qlen 1000
      link/ieee802.11/radiotap xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff

• You probably already have it, but get the homebrew starter kit and place it on your SD card.
• Download the smashhax .pcap files from the releases section of the smashbroshax repository.
• Determine the .pcap file to use. This should be straightforward using the file names.

  The built beacon-hax pcaps are located under "pcap_out/". In the filenames, "vXYZ" means game-version "vX.Y.Z". Full-game filenames for USA include "gameusa", while the other regions filenames include "gameother".

• Get the "Otherapp payload" from the Homebrew Launcher site and save it to "smashpayload.bin" at the root of your SD card.
  
• Download and extract aircrack-ng's latest release source.
• Save aireplay-ng.patch from the smashbroshax repository in the folder "aircrack-ng-1.2-rc2".

Compiling aircrack-ng/aireplay-ng

• Open a terminal and go to the "aircrack-ng-1.2-rc2" folder.
• Use the command "patch src/aireplay-ng.c < aireplay-ng.patch". If you get the following then it has succeeded.

  patching file src/aireplay-ng.c
  Hunk #1 succeeded at 560 (offset 1 line).
  Hunk #2 succeeded at 573 (offset 1 line).

• Run "make" and wait. The program should be compiled with the patch now. If you get the following as the last line then it has succeeded.

  make[1]: Leaving directory '/path/to/aircrack-ng-1.2-rc2/src'

The moment of truth

• Run these 3 terminal commands in order, using the wireless interface (from "ip link") you found earlier.
  
  sudo ifconfig wireless_interface down
  sudo iwconfig wireless_interface mode monitor
  sudo ifconfig wireless_interface up
  sudo iwconfig wireless_interface channel 6​
  (the last line was suggested by @difool. and might make the payload trigger faster)
• Enter the "src" folder in your terminal.
• Run the following command to start broadcasting the packet: "sudo ./aireplay-ng --interactive -r /path/to/smashbros_version_beaconhax.pcap -h 59:ee:3f:2a:37:e0 -x 10 wireless_interface"
  Use the .pcap file and wireless interface you found out earlier.
• On the 3DS system, start the game, then choose Smash and Group. Wait for the magic to happen.

Encountering errors? Something confusing?

• Does running aireplay-ng end with "End of file"? You might be running your installed version of aircrack-ng. Don't forget the ./ for "sudo ./aireplay-ng ..."!
• Please tell me the distribution you are using and the error you've encountered. This will help me fix your issue faster.
• If you don't get something, don't hesitate to point it out! I want to help anyone I can.
• Did you spot an inaccuracy or mistake I made? It would be great if you can tell me that too.
• This was before the Otherapp payload selector was added to the HBL site. This is kept here for legacy reasons or something.
  Spoiler

  • Determine what file you need to get from the Homebrew Launcher Payload section:
    
    Spoiler: Homebrew Launcher Payload

    With the release builds, the hax loads the payload from SD "/smashpayload.bin". This should contain the hb-launcher(https://smealum.github.io/3ds/) otherapp payload. Until there's a proper otherapp payload selector on the hb-launcher site, the payload can be downloaded from the following URL(see also https://github.com/smealum/sploit_installer):
    

    • "https://smealum.github.io/ninjhax2/Pvl9iD2Im5/otherapp/{PAYLOADNAME}.bin" Where {PAYLOADNAME} is: "FIRMVER_REGION_MENUVER_MSETVER".

    FIRMVER values(without quotes):
    

    • "POST5" = non-New3DS
    • "N3DS" = New3DS

    REGION values(without quotes):
    

    • "U" = USA
    • "E" = EUR
    • "J" = JPN

    MENUVER values(without quotes):
    

    • "11272": Non-JPN, system-version v9.0.
    • "12288": System-version v9.2.
    • "13330": System-version v9.3.
    • "14336": System-version v9.4.
    • "15360": System-version v9.5.
    • "16404": System-version v9.6.
    • "17415": System-version v9.7.
    • "20480_usa": USA, system-versions v9.9-v10.0.
    • "19456": Non-USA, system-versions v9.8-v10.0.

    MSETVER values(without quotes):
    

    • "8203": System-versions below v9.6.
    • "9221": System-versions starting with v9.6.

    For example, the payload URL for New3DS USA 9.9.0-X - 10.0.0-X is:https://smealum.github.io/ninjhax2/Pvl9iD2Im5/otherapp/N3DS_U_20480_usa_9221.bin
    The end result is a file named "smashpayload.bin" at the root of your SD card.

You are allowed to reproduce/reprint this tutorial, as long as a link back to this page (https://gbatemp.net/threads/tutorial-using-smashhax-with-linux.397194/) is included.

 

[3lentropy]

Just curious, would this work with windows 10 bash function?

I tried it, didn't work even with xlaunch for graphic interface, but maybe you can get it to work somehow

 

[Deleted User]

I tried using the helper in one of my laptops(a dell with ubuntu 16), but it would give an error when sending the packages. I tried again on an older laptop(a HP xubuntu this time) and the packages were being sent, but nothing happened on the 3ds. I have a New 3ds XL on 11.1-34U and deleted the smash update data(so I was using the 1.00 version in the helper/) and also have the payload named smashpayload in my microsd card. What can I do? Below is an image of the terminal

do you mind if i see what files are in the root of your SD card? also when you start smash and it is on the screen "press any button" before the main menu, it should state the version on the top screen on the bottom right.

 

[3lentropy]

do you mind if i see what files are in the root of your SD card? also when you start smash and it is on the screen "press any button" before the main menu, it should state the version on the top screen on the bottom right.

My SD card and start screens are as these pictures:

 

[Deleted User]

My SD card and start screens are as these pictures:

Things seem to be in order, though it may be that you may have followed a step incorrectly, keep in mind that you have to stay on this screen (attached below) and it should trigger eventually. if it is still not working, try the method on page 25,

Spoiler: Other method (Requires Terminal)

1) download the files form my google drive here (https://drive.google.com/open?id=0B4qTpylRpQmNTnR6Nkg4SDlZRHc) and extract the contents to your desktop

2) open terminal and change your directory to the extracted folder "src" within the downloaded files (cd Desktop/smash/aircrack-ng-1.2-rc2/src)

2.5 (optional): move the folder "pcap_out" from the "src" folder and move it to desktop.

3) check what name your wireless card is using the command (ip link) it is usually "wlan0" or "wlp2s0"

4) when you find your wireless card, use these three commands in order to get the data sent to the 3ds (sudo ifconfig "wireless card" down) (sudo iwconfig "wireless card" mode monitor) (sudo ifconfig "wireless card" up)
Remember to change the "wireless card" to the name of your wireless card
So for example, my wireless card is "wlan1" so the command would look like this [sudo ifconfig wlan1 down] [sudo iwconfig wlan1 mode monitor] [sudo ifconfig wlan1up]

5) when that is all set and you're in the /src folder, run this command (sudo ./aireplay-ng --interactive -r /home/"user"/Desktop/smash/aircrack-ng-1.2-rc2/src/pacp_out/smashbros_"version"_beaconhax.pacp -h 59:ee:3f:2a:37:e0 -x 10 "wireless card")

5.5) [Required if you've done step 2.5] if you have done step 2.5, the command you would enter would be: (sudo ./aireplay-ng --interactive -r /home/"user"/Desktop/pcap_out/smashbros_"version"_beaconhax.pcap -h 59:ee:3f:2a:37:e0 -x 10 "wireless card")

Remember to change the "user" to what you have your computer username set to, and the "version" for which version of smash bros you have
an example for this would be: [sudo ./aireplay-ng --interactive -r /home/mark/Desktop/smash/aircrack-ng-1.2-rc2/src/pcap_out/smashbros_gameusav100_beaconhax.pcap -h 59:ee:3f:2a:37:e0 -x 10 wlan1

6) you should be prompted by the terminal saying "Use this packet?", you need to press "Y" then enter to use the packet

7) with the packets being sent out, go to your NEW 3ds and start smash, select "Smash" from the main menu, Select "Group" next and it should eventually trigger the payload

If you have any questions about this, feel free to pm me.

 

[3lentropy]

Things seem to be in order, though it may be that you may have followed a step incorrectly, keep in mind that you have to stay on this screen (attached below) and it should trigger eventually. if it is still not working, try the method on page 25,

Spoiler: Other method (Requires Terminal)

1) download the files form my google drive here (https://drive.google.com/open?id=0B4qTpylRpQmNTnR6Nkg4SDlZRHc) and extract the contents to your desktop

2) open terminal and change your directory to the extracted folder "src" within the downloaded files (cd Desktop/smash/aircrack-ng-1.2-rc2/src)

2.5 (optional): move the folder "pcap_out" from the "src" folder and move it to desktop.

3) check what name your wireless card is using the command (ip link) it is usually "wlan0" or "wlp2s0"

4) when you find your wireless card, use these three commands in order to get the data sent to the 3ds (sudo ifconfig "wireless card" down) (sudo iwconfig "wireless card" mode monitor) (sudo ifconfig "wireless card" up)
Remember to change the "wireless card" to the name of your wireless card
So for example, my wireless card is "wlan1" so the command would look like this [sudo ifconfig wlan1 down] [sudo iwconfig wlan1 mode monitor] [sudo ifconfig wlan1up]

5) when that is all set and you're in the /src folder, run this command (sudo ./aireplay-ng --interactive -r /home/"user"/Desktop/smash/aircrack-ng-1.2-rc2/src/pacp_out/smashbros_"version"_beaconhax.pacp -h 59:ee:3f:2a:37:e0 -x 10 "wireless card")

5.5) [Required if you've done step 2.5] if you have done step 2.5, the command you would enter would be: (sudo ./aireplay-ng --interactive -r /home/"user"/Desktop/pcap_out/smashbros_"version"_beaconhax.pcap -h 59:ee:3f:2a:37:e0 -x 10 "wireless card")

Remember to change the "user" to what you have your computer username set to, and the "version" for which version of smash bros you have
an example for this would be: [sudo ./aireplay-ng --interactive -r /home/mark/Desktop/smash/aircrack-ng-1.2-rc2/src/pcap_out/smashbros_gameusav100_beaconhax.pcap -h 59:ee:3f:2a:37:e0 -x 10 wlan1

6) you should be prompted by the terminal saying "Use this packet?", you need to press "Y" then enter to use the packet

7) with the packets being sent out, go to your NEW 3ds and start smash, select "Smash" from the main menu, Select "Group" next and it should eventually trigger the payload

If you have any questions about this, feel free to pm me.

I actually managed to borrow a OoT copy from a friend so I'll use the Oothax by now, but thanks for the help

 

[Megalomancer]

Nvm

 

[gbatempistheworstsiteever]

Could someone please create it for me? I really have had it with trying to do the terminal thing on windows. My MAC Address is
7C-BB-8A-C0-FF-24
and I don't care who sees it. Just make the bin for me please somebody lol

I'm on New 3ds with firmware 11.1.0-34U

 

[Linkdik]

Hi, i have problems launching the .sh file, when I open it, it asks me if I want to start it, then I click on Run and after that nothing happens, why does it happen?

 

[TheZeldaBoss]

Hello everyone !

I'm actually trying to access homebrew launcher from smashhax on a N3DS 11.2.0-35E with a SmashBros 1.0.1 cardridge, I followed many tutorials, including the ones on this topic, without any success...
With the helper, I get an error while launching aireplay, which is the following one :

ioctl(SIOCSIWMODE) failed: Device or resource busy

ARP linktype is set to 1 (Ethernet) - expected ARPHRD_IEEE80211,
ARPHRD_IEEE80211_FULL or ARPHRD_IEEE80211_PRISM instead. Make
sure RFMON is enabled: run 'airmon-ng start wlp7s0 <#>'
Sysfs injection support was not found either.

I tried the command line way too, but hax is not loading on my 3DS...

Any solutions please ?

PS : is it normal that the window "wifi has been reactivated" (or something like that, I have texts in french) reappears before exiting aireplay ?

 

[PixelNyan]

ok so for some reason theres no wlan under sudo ifconfig do i need to runs something for it to come up

 

[Joom]

ok so for some reason theres no wlan under sudo ifconfig do i need to runs something for it to come up

That just means that you have a different interface name for your card. Use whatever that is instead of "wlan".

 

[PixelNyan]

That just means that you have a different interface name for your card. Use whatever that is instead of "wlan".

how do i find that out

 

[Joom]

how do i find that out

sudo lspc | grep wireless

You can change "wireless" to your card manufacturer's name and you'd probably have better results. Once you have that you can find it with ifconfig.

 

[PixelNyan]

sudo lspc | grep wireless

You can change "wireless" to your card manufacturer's name and you'd probably have better results. Once you have that you can find it with ifconfig.

im on osx

 

[Joom]

im on osx

Check in System Profiler then. Press Command + U to open Utilities. I think you can find the interface name under Network Preferences as well.

 

[PixelNyan]

so what exactly am i looking under in the system profiler im a noob sorry heh

 

[Joom]

so what exactly am i looking under in the system profiler im a noob sorry heh

Actually, just run this in a terminal.

networksetup -listallhardwareports

 

[PixelNyan]

got it so what would i swap out wlan with

 

[Joom]

got it so what would i swap out wlan with

Whatever the interface name is for your wireless card. It'll be something like "en0".

 

[PixelNyan]

yea ive got en0 en1 en2 so should i try each one