help using old tibianic client and otclient as nastarius

[CipsoftStinks]

Hello otland

well i have the sources adapted to my server that it's otx2
to be compatible with the old tibianic client(just with old tibianic client)
but i want to also use otclient too... as nastarius
here error in console

 [Failure - Protocol::XTEA_decrypt] Not valid unencrypted message size (IP: 190xxxxxx249)
[11/8/2017 17:52:53] [Failure - Protocol::XTEA_decrypt] Not valid unencrypted message size (IP: 190.xxxx249)
[11/8/2017 17:52:54] [Failure - Protocol::XTEA_decrypt] Not valid unencrypted message size (IP: 190.4xxxx.

the codes XOR are related to tibianic client
could someone help me?
i have made some edition sometimes i get errors in console using otclient and others using old- tibianic
i want to be able to use both

editions in protocol.cpp related to my issues my tries to make it work
in this way i have the xtea errior using old tibianic(no errors when compiled)

no source edited

void Protocol::onRecvMessage(NetworkMessage& msg)
{
    #ifdef __DEBUG_NET_DETAIL__
    std::clog << "Protocol::onRecvMessage" << std::endl;
    #endif

    #ifdef _MULTIPLATFORM77
    if(m_encryptionEnabled)
    {
        #ifdef __DEBUG_NET_DETAIL__
        std::clog << "Protocol::onRecvMessage - decrypt" << std::endl;
        #endif
        if(!XTEA_decrypt(msg))
            return;
    }
    #endif

    parsePacket(msg);
}

just tibianic client code

void Protocol::onRecvMessage(NetworkMessage& msg)
{
    #ifdef __DEBUG_NET_DETAIL__
    std::clog << "Protocol::onRecvMessage" << std::endl;
    #endif

    #ifdef _MULTIPLATFORM77
    if (m_encryptionEnabled){
        XOR_decrypt(msg);
        if (!XTEA_decrypt(msg)) {
            return;
        }                             
    }

    #endif

    parsePacket(msg);
}

what i did (thinking that i could be able to use otc + tibianic client)
but with this code im having problem in console if i log in with tibianic
ofcourse i added definitions in protocol. h
no errors in console(while compiling etc)

void Protocol::onRecvXORMessage(NetworkMessage & msg)
{
#ifdef __DEBUG_NET_DETAIL__
    std::clog << "Protocol::onRecvMessage" << std::endl;
#endif

#ifdef _MULTIPLATFORM77
    if (m_encryptionEnabled) {
        XOR_decrypt(msg);
        if (!XTEA_decrypt(msg)) {
            return;
        }
}

#endif

    parsePacket(msg);
}

void Protocol::onRecvMessage(NetworkMessage& msg)
{
    #ifdef __DEBUG_NET_DETAIL__
    std::clog << "Protocol::onRecvMessage" << std::endl;
    #endif

    #ifdef _MULTIPLATFORM77
    if (m_encryptionEnabled){
     #ifdef __DEBUG_NET_DETAIL__
        std::clog << "Protocol::onRecvMessage - decrypt" << std::endl;
      #endif
        if (!XTEA_decrypt(msg)) {
            return;
        }                            
    }

    #endif

    parsePacket(msg);
}

pd:i also source edited otclient to sent a fake protocol

bump

bump

bump

 

[Qbazzz]

I was using something like this on Oldera. AFAIK Tibianic had same xor decryption.

void Protocol::onRecvMessage(NetworkMessage& msg)
{
    #ifdef __DEBUG_NET_DETAIL__
    std::cout << "Protocol::onRecvMessage" << std::endl;
    #endif

    #ifdef __PROTOCOL_77__
    if(m_encryptionEnabled){
        #ifdef __DEBUG_NET_DETAIL__
        std::cout << "Protocol::onRecvMessage - decrypt" << std::endl;
        #endif
           
        //OLDERA XOR SECURITY
        int read_pos = 0;
        char* buffer = (char*)msg.getBuffer();
        int32_t messageLength = msg.getMessageLength();
   
        messageLength >>= 2;
        for(int i = 0; i < messageLength; i++){
            buffer[read_pos+2] ^= 1;
            read_pos += 4;
        }
        //END OF OXS
        XTEA_decrypt(msg);
    }
    #endif // __PROTOCOL_77__
    parsePacket(msg);
}

Tested on Avesta.

 

[CipsoftStinks]

I was using something like this on Oldera. AFAIK Tibianic had same xor decryption.

void Protocol::onRecvMessage(NetworkMessage& msg)
{
    #ifdef __DEBUG_NET_DETAIL__
    std::cout << "Protocol::onRecvMessage" << std::endl;
    #endif

    #ifdef __PROTOCOL_77__
    if(m_encryptionEnabled){
        #ifdef __DEBUG_NET_DETAIL__
        std::cout << "Protocol::onRecvMessage - decrypt" << std::endl;
        #endif
          
        //OLDERA XOR SECURITY
        int read_pos = 0;
        char* buffer = (char*)msg.getBuffer();
        int32_t messageLength = msg.getMessageLength();
  
        messageLength >>= 2;
        for(int i = 0; i < messageLength; i++){
            buffer[read_pos+2] ^= 1;
            read_pos += 4;
        }
        //END OF OXS
        XTEA_decrypt(msg);
    }
    #endif // __PROTOCOL_77__
    parsePacket(msg);
}

Tested on Avesta.

where should i add that?

i added at protocol.cpp in my server source but tibianic client doesnt works neither otclient
when i log in i cant walk

 

[Qbazzz]

you need to find xor key, reverse tibianic client, find hook on send and follow to dll, then look for xor function and change 1 to anything you find:
buffer[read_pos+2] ^= 1;
probably it may be first char of your account name/number.

 

[shass]

Hello @Qbazzz @CipsoftStinks im looking exactly this, im using old medivia client
(at my server)i have the source at my server to use the old medivia client at my source
and i want to log into otclient too could u explain me a little bit more please?
im very glad to see this post

 

[emil92b]

mind sharing that source?