How to Reverse Engineering NosTale?

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Originally Posted by Koffy1 How could I send a packet to various NosTale clients at the same time through sockets? I think this code is correct and I only need to include cryptography.h and cryptography.cpp of NosTale, but then, what should I do? I mean, It connects successfully to the game but now I don't know what to do. Code: #include <iostream> #include <string> #include <WS2tcpip.h> #pragma comment(lib, "ws2_32.lib") using namespace std; void main() { string ipAddress = "79.110.84.75"; // IP Address of the server int port = 4000; // Listening port # on the server // Initialize WinSock WSAData data; WORD ver = MAKEWORD(2, 2); int wsResult = WSAStartup(ver, &data); if (wsResult != 0) { cerr << "Can't start Winsock, Err #" << wsResult << endl; return; } // Create socket SOCKET sock = socket(AF_INET, SOCK_STREAM, 0); if (sock == INVALID_SOCKET) { cerr << "Can't create socket, Err #" << WSAGetLastError() << endl; WSACleanup(); return; } // Fill in a hint structure sockaddr_in hint; hint.sin_family = AF_INET; hint.sin_port = htons(port); inet_pton(AF_INET, ipAddress.c_str(), &hint.sin_addr); // Connect to server int connResult = connect(sock, (sockaddr*)&hint, sizeof(hint)); if (connResult == SOCKET_ERROR) { cerr << "Can't connect to server, Err #" << WSAGetLastError() << endl; closesocket(sock); WSACleanup(); return; } // Gracefully close down everything closesocket(sock); WSACleanup(); }

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Originally Posted by FI0w How about Sending the Login Packet? but for what you need all this?

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Originally Posted by Koffy1 How can I do it?

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Originally Posted by FI0w Learn how Winsocket works [Only registered and activated users can see links. Click Here To Register...]

wsResult = send(sock, sendbuf, (int)strlen(sendbuf), 0);
	if (wsResult == SOCKET_ERROR)
	{
		printf("send failed with error: %d\n", WSAGetLastError());
		closesocket(sock);
		WSACleanup();
		return;
	}

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Originally Posted by Koffy1 How should I send the login packet? I tried this and I didn't get any error, so it's something like that, but I don't know how to use the cryptography to send packets, which parameters of the cryptography should I give to the function send? Code: wsResult = send(sock, sendbuf, (int)strlen(sendbuf), 0); if (wsResult == SOCKET_ERROR) { printf("send failed with error: %d\n", WSAGetLastError()); closesocket(sock); WSACleanup(); return; }

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Originally Posted by Pumba98 example project [Only registered and activated users can see links. Click Here To Register...] Btw: you know that this is not what Walross talked about?

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Originally Posted by Koffy1 Mmmm, what did Walross talked about Pumba? I'm bit confused :confused: Where can I learn all this stuff? I don't find anything...

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Originally Posted by IceTrailer The current cryptography is on epvp, you should search „sockets“ on google.

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Originally Posted by Koffy1 Mmmm, what did Walross talked about Pumba? I'm bit confused :confused: Where can I learn all this stuff? I don't find anything...

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Originally Posted by Pumba98 I think we're mixing some things up here. You started to talk about Reverse Engineering, so i guess you want to have multiple Game Clients? Or do you want one Game Client and multiple "clientless" chars that follow? If you want to use the Gameclient you don't need the Crypto and all these things. Walross just talked about the Communication between the processes/clients to deliver the information where the char needs to walk to.

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Originally Posted by Koffy1 Hi Pumba, yes I think I had mixed some things xd I want to do one game client and multiple "clientless" chars to follow me and do exactly the same as me. How could I do that?

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Originally Posted by Koffy1 Ok, I think now my code is working but when I try to implement the cryptography in my visual studio project it appears an error. The #include <md5.h> and <hex.h>. I tried to download CryptoPP, but I still get errors. Also I got a lot of errors when I try to compile CryptoPP project xd PS: I'm using Cryless~ cryptography

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Originally Posted by Koffy1 When I try to build the CryptoPP it appears one error: cannot open include file: 'stddefh.h': No such file or directory. What directory I need to add, and where? Project -> Properties -> VC++ Directories -> Include Directories???

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Originally Posted by Pumba98 Can't test at the moment, maybe look at this [Only registered and activated users can see links. Click Here To Register...]

std::vector<unsigned char> encryptLoginPacket(const std::string& buf) const;

Crypto client;
	std::string username = "test";
	std::string password = "1234";

	client.randomNumber(0, 1000);
	client.createLoginVersion();
	client.createLoginHash(username);
	client.encryptPasswordString(password);
	client.encryptLoginPacket("I don't know what to put here") // It takes a string as parameter

	int ret = send(ConnectSocket, "const char buf* of login packet?", "int len", "int flags");
        wprintf(L"Connected to server.\n");

Crypto client;
	std::string username = "test";
	std::string password = "1234";
	std::string packet = 
        client.createLoginHash(username)+client.encryptPasswordString(password);
	int packetLength = packet.length();
        client.randomNumber(0, 1000);
	client.createLoginVersion();
        client.encryptLoginPacket(packet);

        int ret = send(ConnectSocket, packet.c_str(), packetLength, 0);
	wprintf(L"Connected to server.\n");