An interesting fact that some people probably don't know is that Wiimmfi also abuses this buffer overrun in order to run code on your console when you connect with the DNS method. This is how the server facilitates providing security patches to the game - as this is not the only way one can get code running on MKW over the network. The game is played peer-to-peer, and there are at least 2 exploits that would permit your online opponents to run any code they wanted on your game, and the server would be none the wiser that this had happened! The side effects of which could be genuinely awful, as you could easily brick a Wii console by running malicious code on it. So, before you can even connect to an opponent, the server uses this bug demonstrated in the video to temporarily take control of your game, remove those exploits, and only after that allows you to find opponents.

It's also worth noting that every single Wii game ever released has this buffer overrun in it. It's a fundamental flaw in the networking library they used. So you could actually mess with literally any WFC-enabled Wii game in this manner - assuming you can get them logged in, your mileage may vary depending on required IOS.

MKW needs more technical videos like this

animations were super cute and helped me understand a lot of concepts much easier. Great vid

Malleo just showed up, dropped pandora's box of code into the community as a whole, and dipped. what a legend

I'm finishing up my Computer Science undergrad in the coming spring, so I was already familiar with everything discussed here. And I have to say—you did an excellent job explaining what's going on behind the scenes while managing to keep it super easy to understand for non-computer people.

A video like this one—one about a fun game that people already know about, combined with juuust enough of an introduction into a complex field—is the kind of video that will ignite a spark to eventually create the most curious and inquisitive students. My heart is full imagining some young ones today stumbling across this video and thinking, "wow, computer science is so cool!" I hope there will be at least a few, because I love this stuff so much and I would love for more people to enjoy it too.

Again, excellent work; and thank you for this video. I may use it to sell computer science to some of my nephews next time I see them 😄. You've earned whatever likes and subscriptions you want from me!

Can't wait to run Doom on Mario Kart Wii!

This may be the single nerdiest video to ever grace this game’s community. Incredible work

Such a high quality production. Good stuff as always

Ah yes, I think I recall this bug in the Wii’s digital signature system. It wasn’t just used for connecting to the internet; every game had a signature calculated over the disc contents, to try to prevent exploits through modifying games to contain code other than what the developer had actually made. I was aware of it through Guitar Hero, and exploiting this bug was how that community was able to insert their own custom songs into that game - by taking the original game, replacing the files for a song with their own, then “fakesigning” that disc image. To see it used in this manner, to arbitrarily patch games that haven’t seen official updates in decades… on a system that never actually had game updates, and to do so inside the game environment itself, is seriously impressive.

0:24 Milei is that you

14:00 ah yes, the riolu approach

This man basically did Arbitrary Code Execution on MKW, he must be stopped!

What a title. Great watch. Always enjoy any new Malleo content, whether I fully understand it or not (I think I understood most of it :P)

I’m gonna be boring and ask for an update on the 100% tas again. I’ve rewatched your other tases multiple times (particularly the 2:22 one that one just seems so iconic) cuz your content is just so good.

Sending love and good vibes to whatever stress (if any) you’re going through 👏🏻

I have a master’s and undergrad degree in CS, currently working at big tech with a side gig of teaching CS. Despite already knowing the content you presented, I had so much fun watching. Hope you continue making videos in this niche of programming and video game modification/exploits

I love the way you presented the information, especially going with assumptions then immediately proving them wrong -- Not only is it nice every part gets explained, but it also helps to retain attention by approaching new info in a different way! That on top of the visuals made it incredibly easy to digest

I do have a question though, is it possible to recognize when the slowdown script is used, or to a lesser degree? Like let's say 75% the normal speed

Videos like this remind me why I chose to study computer science

dude what a video man, as a CS student you seriously did such a good job explaining these concepts. Awesome video man

14:24 Except the late WFC, wherein I remember seeing a legitimate WR only once.

One would think a 4-second Luigi Circuit run in which Funky Kong misses the first turn and AFKs on a wall could be automatically deleted in an instant, but nope.

Nothing brings me more happiness than a new video from the content GOAT, Malleo
Good stuff as always!