starletgti

This system connects to login server at port 2618. How it is possible to edit system to connect to another port than 2106(default)?

I found same examples of extenders in forum that they use functions writen in C++ and not using opcodes like this guide to extend/fix some functionality. My question is how do you define in your C++ code classes or structures that L2server uses? For example i saw functions using User *pUser pointer for input. Did you read the assembly from IDA and create from the begging the whole class/structure?

:D 1000 thx!!!

does anyone has C4 Function list with the offset of each function?

Thanks a lot !!! Problem Solved :D

mcbigmac i am not expect anything i just made this question because my results are not the same as thoose described by the author of this topic. Could you please be more spesific about the IDC script? how it will map sub_"hexaddr" functions to real named functions?

after analyzing the leaked C4 PTS L2server.exe with latest IDA(6) for x64 i get no string names equal to function calls like thoose you describe but i can only find strings like Loading Multisell, Loading Henna etc. Most of functions named sub_******. And the ida's debugger for x64 processes like this one don't work, it asks for something like "dbgsrv.exe". Am i doing something wrong?

wow why all of these validator tests? i think it doesnt matter... Just look the result! http://validator.w3.org/check?uri=http%3A%2F%2Fwww.microsoft.org%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1&group=0&user-agent=W3C_Validator%2F1.1

Thank you for help until now...i have one more question. How is it posible to edit client's algorithms? Where did they find the source code? The client files are in binary(exe,dll etc) mode. They use IDA Pro Database or something similar?

I agree with you but few of us, like me, want to learn how did you create this extender from begin to end. Is it possible to explain us step by step what you did with the full source code and how bypass works and linked with the extender? Ty in advance :)

they made all this changes for better security?

why big servers cant connect with the common patched interlude system with l2.ini edited for their ip? the only way to connect is to download their system from their website what differences they have? thank you!

good idea! Thanks!

i will check it thanks

how this can be done? any idea?