Saturday, April 11, 2020

WinMUGEN Exploits: CMD Buffer-Overflow

Good evening, my friends.
Well, today we are going to talk about a new exploit, found in WinMUGEN.

Information provided by ydccdy, a Chinese MUGEN author, has revealed the existence of an exploit found in the CMD processor, the command expressions to be exact., whose main function is to trigger determined actions from the commands written in StateDef -1.

After having taken a look at the exploit, I have noticed the command name length is fixed to 64 bytes, giving the chance to execute arbitrary code from a CMD expression by surpassing this length, basically a buffer overflow.

What M.U.G.E.N authors put in their state controllers to make use of the commands, either it can be used to execute arbitrary code, for example, these 2 pictures:

Command = "Insert all your shellcode here, it is less versatile, but well. 1234"
Note: The 1234 characters are used as a return address for the exploit.

I have made this character after spending a few hours to program its arbitrary code, but the results were worth, so...

(> Click here to download this character <) 

As a conclusion, I can say this method is really less versatile than the SuperNull one, but if you manage to put all your shellcode into command slices, the execution may be interesting to see...

Well, that is all for today, stay tuned for new content!
Have a nice day.

Thursday, February 27, 2020

Eikidankai Development Log(3)

Eikidankai Development Log:
Primary memory bank

Hmmm... I think I am posting more content about Eikidankai than usual, but well.
In this thread, we are going to talk about the primary memory bank, used in the current version of Eikidankai.

We have to take into account this feature did not even exist in the first beta versions of Eikidankai, as the main code was quite different, compared to the current one, making each other incompatible.

This image shows how the old stack frame of Eikidankai looked like, the function set was quite limited, due to the most of the slots had been reserved for the CF subroutine.

The next image shows the stack frame was updated to separate the functions of the CFL subroutine from the loader, making it optimal for several circumstances, besides the fact Eikidankai can now make use of all the slots, greatly extending its function set 
Although this implementation required a new code structure to work efficiently, the results were but good.

The address for it is at 0x0A424B70
That is how the primary memory bank looks like
That is all for today, stay tuned for more content.
Have a nice day.

Wednesday, February 26, 2020

Eikidankai Development Log(2)

Eikidankai Development Log:
CFL Subroutine

Huh, it has been a long while since I do not post anything, but well...
This time we are going to talk about the CFL subroutine, and the file as well.

This subroutine had been recoded to improve its performance in Eikidankai, which used to be antiquated, due to the lack of security checks.
Additionally, this file contained all the primary functions of Eikidankai, making the main loader quite basic. Fixed in the new beta version, by putting all the functions into the loader, instead of the CFL file.

First version of the CFL loader.

After Eikidankai has loaded all the required stuff in the stack frame, it will look for a file, called as "Eikidankai.Cfl" to load it in memory, this file contains custom code, allowing a MUGEN author to implement its own content, having chances to exploit all the capabilities of the engine.

Improved version of the CFL loader

Last, but not least, the loader will check the file's intergrity, making use of certain parameters to perform a better execution from the CFL file

That is all, stay tuned for more updates.
Have a nice day...

Wednesday, September 4, 2019

Eikidankai Development Log(1)

Eikidankai Development Log:
Catching the WinMUGEN primary thread.

The development of Eikidankai has been somewhat tedious to program, as when there is an interesting function to add into the coding, it mostly implies to modify the structure of all the code to implement it, or else I would not be able to perform that.
That is why I am taking over 2 years or more to program that, well...

One of the functions I had implemented some months ago was the ability to manipulate the primary thread of WinMUGEN, which in the previous versions of Eikidankai were not able to perform it.

In this case, I used the SuspendThread function from an external thread to freeze the primary one.

WinMUGEN before getting suspended by Eikidankai.


The suspend count has been increased by 1.

That is all for now, have a nice day or night.
Stay tuned for upcoming posts!

Thursday, December 27, 2018

Void-Schmelze Release!

Hello friends. 
In this occasion I have decided to release Void-Schmelze, one of my first SuperNull characters, well, it is because I would like you friends to test her.

(> Download here <)
Keep in mind her SuperNull file, Eikidankai, might be able to do some malicious actions from your point of view, but do not worry, it will not damage your computer...
Well, that is all, friends.
Stay tuned for upcoming posts!

Wednesday, July 18, 2018


Hi friends. 
In this occasion I have released this old supernull character called Explosive-Donald.
That is all, stay tuned for upcoming threads.

Saturday, July 7, 2018

Friday, June 22, 2018

Eikidankai: Real-Timer Patcher

I was bored, so I have implemented "Real-Timer Patcher" for Void-Schmelze. 
You can see it in the left-bottom corner of this picture.
Well, that is all... 

Thursday, May 17, 2018


Have you wondered if my Eikidankai* has an additional function besides of its normal operating?

Well, here's the answer, modifying this section you will get a special function.
(*): It's the name that I gave it to my special SuperNull-Loader, 4Head.
That's all at the moment, good night.

Cyberia V1

Hi friends, here we go again with the release of Cyberia V1, one of my old SN characters. I think she's a not bad character in terms of style, so enjoy!

Monday, January 1, 2018


Here we go again.
Some advance of it, 4Head.
W.I.P yet... 
But well, I will make a SN Tenshi, though it wouldn't considered as an edit.

Monday, July 3, 2017

Cyber's Database...

It´s something that I was working during months but is not finished yet, one time I finish this project or something like that, I will post it here (Non M.U.G.E.N related).

Some OCs that I did between 2014-2015 and one in 2016...

It will be a character collage...

So stay tuned for future updates...

Tuesday, February 28, 2017

Nyan-Cat Release(Win)

Hi everyone...
I decided to release this char for the public called Nyan-Cat, seemed to the original one, a char mid tier SN, after all, well... hmmm idk ripperino, I have don't anything more to say what..; Enjoy it.

This char works for WinMugen only.

Nyan-Cat V1.0
Nyan-Cat :v
(> Download Here <)

Sunday, January 8, 2017


Hi everyone...
I decided to release this char..; Rainbow-Unknown after some months thinking about it, a char of mid tier SN, after all, well... hmm idk, I haven't anything more to say what, enjoy it.


Sunday, November 6, 2016

Space Corridor (Stage for M.U.G.E.N Win/1.0)

Well huh, hi everyone.
I created this stage due that I was bored and I wanted to create something cool lol, well, here's the Space Corridor (Insert any AU lulz) from Undertale, this works in 1.0 and winmugen.

They're in space, the windows are illuminated (see sun) rofl

SuperJump : Yes
Music : Too
Animated : Of Course.


Friday, September 9, 2016

Biakiel Released (?)

Well, Hi Friends
Here again for release an old char SN 
called Biakiel, simply because he's old as well as cool for someone from there, this time I will leave the url in the post without removing it.
Well good whatever.

URL to download it :

Thursday, August 11, 2016

SpringTrap V1 Released (Only for winmugen).

After of much decisions about this thing,
I release springtrap for winmugen (ofc has SN coding), but if you still plays it, download it during this month because after, I'll remove the url.
 lel this pic...

Wednesday, June 22, 2016

New Sans for 1.0.

Howdy Friends.
I don't finished the Bonus because I was busy and lazy
as always, but doesn't mean that i'm back, I changed
of idea, of Dark Link to Sans, well he has coding of a cheap but doesn't want mean that he really is a cheap, its a balanced but with the coding of one lulz.

Sans (with Hyper-Armor) vs Papyrus o3o...

Well, here's a preview of my Sans's version.

Check out my channel for more news about this wip.

Well, that's all
cya guys.

Friday, June 5, 2015

A special bonus.

Well, I go to do a mini-game called Dark Link of Link, only for MUGEN 1.0 and 1.1 but not wants say it I go return to the MUGEN Normal, is only a special and point.

Sunday, March 15, 2015


I have been much idle time, so I want to say that I retire of M.U.G.E.N Normal, and I am part of M.U.G.E.N Cheapie with Kingdemonic666, sorry :(.

Saturday, November 30, 2013

M.U.G.E.N Versions

Here MUGEN versions of the linux versions for Windows hacked to older versions for MS-DOS in 2001 and 2000, the 1999 is very difficult to achieve, are virus-free and safe.

                   M.U.G.E.N 1.1
   Date : 11/08/2013
   Author : Elecbyte
   Link : Download / Page of M.U.G.E.N

   M.U.G.E.N 1.0
   Date : 11/06/2011
   Author : Elecbyte
   Link : Download / Page of M.U.G.E.N

                   M.U.G.E.N Hi-res / Low-res
Date : 20/10/2007
Author : Elecbyte
Link : Download / Alternate Link

M.U.G.E.N Low-res (Not Limit Pacth)
Date : 08/08/2005
Author : Elecbyte
Link : Download / Alternate Link

  DOS M.U.G.E.N (Version 2000.14.04)*
  Date : 14/04/2000
  Author : Elecbyte
  Link : Alternate Link
                   DOS M.U.G.E.N (Version 2001.14.04)*
  Date : 14/04/2001
  Author : Elecbyte
  Link : Alternate Link

* - these versions are marked with * need a viewer for MS-DOS versions able to run, not so the game does not run or error mark.

For this more in contact, view my page of MUGEN or homepage.
My MUGEN Page or My HomePage

Thursday, November 28, 2013


Hi friends, in my section are characters created by me, there are some previous characters and others do not (long), on this page, all characters are free of viruses and very safe, which can be downloaded by 4Shared, here are character this is done today.

Jake the dog MVC2 style (with the Resurrection)
Date: 10/08/2013
Author: CyberAkumaTv
Link:  8-Bit MVC2 Jake V15.95
            Jake the dog style akuma
            Date: 04/07/2013
            Author: CyberAkumaTv
            Link:  Jake the dog style akuma

      Jenny Wakeman - XJ9
      Date: 01/09/2013
      Author: CyberAkumaTv
      Character:  Jenny XJ9 MVC2 (Winmugen)
      Character 2:  Jenny XJ9 MVC2 (MUGEN 1.0)

            Date: 08/02/2013
            Author: CyberAkumaTv
            Link:  Cyber-Jake V13

Stimpson J. Cat
Date: 20/06/2013
Author: CyberAkumaTv / MadOldCrow1105
Link:  Stimpson J. Cat V13
MOC1105 Link:  Stimpy1105

Omega Rugal (KOF 95 MVC2)
Version : Stable
Date: 12/11/2013
Author: CyberAkumaTv
Link:  Omega Rugal V13 MVC2
Char. 1.0:  Omega Rugal MVC2 1.0 V2

Saisyu Kusanagi  (KOF 95 MVC2)
Date: 31/12/2013
Version : Stable
Author: CyberAkumaTv
Link:  Saisyu Kusanagi V10.5 MVC2
Char. 1.0:  Saisyu Kusanagi MVC2 1.0 V2

                               Urien with (Resurrection) (Street Fighter 3)
                               Date: 01/02/2014
Version  : Stable
Author: CyberAkumaTv
Link:  SF3 Urien V9.5
Char. 1.0:  SF3 Urien 1.0 V10.5

       SF3 Akuma
       Date: 20/04/2014
       Version: Stable 
       Author: CyberAkumaTv
       Link:  Akuma SF3 V6.9
       Char 1.0: Akuma SF3 1.0 V11.7  +  (With the Shin Akuma)                                                 

ED-209 (Robocop) 
Date: 18/08/2014
Version   : Stable
Author: CyberAkumaTv
Char  1.0 : SF3 ED-209 1.0 V8
Char WinMUGEN SF3 ED-209 WIN V9

For this more in contact, view my page of MUGEN or homepage.