Change name of main.exe in mu.exe (Launcher)

[mauka]

Another noobish guide.

To change main.exe to eg: main2.exe we need find function

So there we go.
Load mu.exe into olly and goto empty space and write there new name of your main.exe and press OK

Now write down the offset of name

Now go back to function we need change
and write offset of new name as in image below and press assamble button

After we finish its would look like that

Save mu.exe with all changes
Copy to executable -> bla bla save as..

I atached mu.exe so some newbies can compare offsets, func and more... xD
View attachment Mu.rar

Change IP and Default port u can find simply.. anyway

0040625A   . BE 54C04400    MOV ESI,Mu.0044C054                                ;  ASCII "[COLOR="#0000FF"]connect.muonline.webzen.net[/COLOR]"
0040625F   . BF F0104600    MOV EDI,Mu.004610F0
00406264   . F3:A5          REP MOVS DWORD PTR ES:[EDI],DWORD PTR DS:[ESI]
00406266   . 53             PUSH EBX
00406267   . 8D4C24 1C      LEA ECX,DWORD PTR SS:[ESP+1C]
0040626B   . 66:C705 241146>MOV WORD PTR DS:[461124],0[COLOR="#0000FF"]AD75[/COLOR]
00406274   . E8 47220000    CALL Mu.004084C0

Port and IP i marked in this color

 

[KarLi]

thats good guide and i think everyone wants to do that.

gj

 

[4pLay]

Nice! Gonna Try This When My Files Are Finalized...

 

[Evil_spirit]

Thanks a lot for good guide, but first of all you should make a guide for using OllyDbg and tell what is function? what is offset? how to search? where to search in OllyDbg? You know many noob can't search because they don't know how to do it? And after search they don't know how to make change to that value they've found.

So it is important for noob to learn about using OllyDbg?

 

[Mosiah17]

Thanks for the guide is very necessary for agree security to client.

It works very well.!!

 

[mauka]

this is very basic sht of inline asm editing no need more detailed tutorials, its simply as it is. If u dont get it u need learn some basic of programming.

 

[jhahernandezcas]

this is very basic sht of inline asm editing no need more detailed tutorials, its simply as it is. If u dont get it u need learn some basic of programming.

Hello, you can repeat this guide I am very interested to know how to change the name main.exe in the launcher update. thanks

 

[mauka]

dunno where the screens got :/ i try re-edit post when have time, but it was very simply

 

[Kevin Teran]

can ur reupload the pics?

 

[RafaelPraskurin]

Nice work!!!, continue with great work and good guides like this