AI 助理
备案控制台
开发者社区 云计算 文章 正文

一个VC写的完整、简单的Sniffer代码

2024-09-28 20
版权
版权声明：
本文内容由阿里云实名注册用户自发贡献，版权归原作者所有，阿里云开发者社区不拥有其著作权，亦不承担相应法律责任。具体规则请查看《 阿里云开发者社区用户服务协议》和 《阿里云开发者社区知识产权保护指引》。如果您发现本社区中有涉嫌抄袭的内容，填写 侵权投诉表单进行举报，一经查实，本社区将立刻删除涉嫌侵权内容。
简介： 一个VC写的完整、简单的Sniffer代码

以下完整、简单的Sniffer代码代码是用SOCK_RAW写的.SP2已经不支持RAW

#include <winsock2.h>
#include <windows.h>
#include <ws2tcpip.h>
#include <stdio.h>
#include <stdlib.h>
#define MAX_HOSTNAME_LAN 255
#define SIO_RCVALL _WSAIOW(IOC_VENDOR,1)
#define MAX_ADDR_LEN 16
typedef struct tcpheader {
     unsigned short int sport;
     unsigned short int dport;
     unsigned int th_seq;
     unsigned int th_ack;
     unsigned char th_x2:4;
     unsigned char th_off:4;
     unsigned char Flags;
     unsigned short int th_win;
     unsigned short int th_sum;
     unsigned short int th_urp;
}TCP_HDR;
struct ipheader {
unsigned char ip_hl:4, ip_v:4; /* this means that each member is 4 bits */
unsigned char ip_tos;
unsigned short int ip_len;
unsigned short int ip_id;
unsigned short int ip_off;
unsigned char ip_ttl;
unsigned char ip_p;
unsigned short int ip_sum;
unsigned int ip_src;
unsigned int ip_dst;
}; /* total ip header length: 20 bytes (=160 bits) */
// Psuedo Header
typedef struct ps_hdr
{
    unsigned int   source_address;   // Source Address         =>      4 Bytes
    unsigned int   dest_address;     // Destination Address     =>      4 Bytes
    unsigned char  placeholder;         // Place Holder         =>      1 Bytes
    unsigned char  protocol;         // Protocol         =>      1 Bytes
    unsigned short tcp_length;         // TCP Length         =>    +  2 Bytes
                     //                       = 12 Bytes
    struct tcpheader tcp;
}PS_HDR;
typedef struct udphdr {
unsigned short sport;
unsigned short dport;
unsigned short len;
unsigned short cksum;
}UDP_HDR;
void hexdump(char *pointer)
{
    if ((*(pointer)>0))
    printf("//x%2.2i",*(pointer));
    else
    printf("//x%2.2i",(*(pointer))*(-1)+82);
}
void main()
{
    SOCKET sock;
    WSADATA wsd;
    char RecvBuf[65535] = {0};
    DWORD  dwBytesRet;
    int pCount=0;
    unsigned int  optval = 1; //the pointer , which shows us the payload begin
    unsigned char *datatcp=NULL; //the pointer , which shows us the payload begin
    unsigned char *dataudp=NULL;
    int lentcp=0, lenudp;
    WSAStartup(MAKEWORD(2,1),&wsd);
    if((sock = socket(AF_INET, SOCK_RAW, IPPROTO_IP))==SOCKET_ERROR)
    {
        exit(1);
    }
    char FAR name[MAX_HOSTNAME_LAN];
    gethostname(name, MAX_HOSTNAME_LAN);
    struct hostent FAR * pHostent;
    pHostent = (struct hostent * )malloc(sizeof(struct hostent));
    pHostent = gethostbyname(name);
    SOCKADDR_IN sa;
    sa.sin_family = AF_INET;
    sa.sin_port = htons(6000);
    memcpy(&sa.sin_addr.S_un.S_addr, pHostent->h_addr_list[0], pHostent->h_length);
    bind(sock, (SOCKADDR *)&sa, sizeof(sa));
    //if you don't have raw socket support (win 95/98/me/win2kuser) it calls the exit(1) function
    if ((WSAGetLastError())==10013)
    exit(1);
    WSAIoctl(sock, SIO_RCVALL, &optval, sizeof(optval), NULL, 0, &dwBytesRet, NULL, NULL);
    struct udphdr *pUdpheader;
    struct ipheader *pIpheader;
    struct tcpheader *pTcpheader;
    char szSourceIP[MAX_ADDR_LEN], szDestIP[MAX_ADDR_LEN];
    SOCKADDR_IN saSource, saDest;
    pIpheader = (struct ipheader *)RecvBuf;
    pTcpheader = (struct tcpheader *)(RecvBuf+ sizeof(struct ipheader ));
    pUdpheader = (struct udphdr *) (RecvBuf+ sizeof(struct ipheader ));
    while (1)
    {
       
        memset(RecvBuf, 0, sizeof(RecvBuf));
        recv(sock, RecvBuf, sizeof(RecvBuf), 0);
        saSource.sin_addr.s_addr = pIpheader->ip_src;
        strncpy(szSourceIP, inet_ntoa(saSource.sin_addr), MAX_ADDR_LEN);
        //Check Dest IP
        saDest.sin_addr.s_addr = pIpheader->ip_dst;
        strncpy(szDestIP, inet_ntoa(saDest.sin_addr), MAX_ADDR_LEN);
       
        lentcp =(ntohs(pIpheader->ip_len)-(sizeof(struct ipheader)+sizeof(struct tcpheader)));    
        lenudp =(ntohs(pIpheader->ip_len)-(sizeof(struct ipheader)+sizeof(struct udphdr)));        
        if(    (pIpheader->ip_p)==IPPROTO_TCP&&lentcp!=0)
        {
            printf("*******************************************/n");
            pCount++;    
            datatcp=(unsigned char *) RecvBuf+sizeof(struct ipheader)+sizeof(struct tcpheader);
            printf("-TCP-/n");                    
            printf("/nDestination address->%s/n",szDestIP);
            printf("/nDestination port->%i/n",ntohs(pTcpheader->dport));
            printf("datatcp address->%x/n",datatcp);
            printf("size of ipheader->%i/n",sizeof(struct ipheader));
            printf("size of tcpheader->%i/n",sizeof(struct tcpheader));
            printf("size of the hole packet->%i/n",ntohs(pIpheader->ip_len));
            printf("/nchar Packet%i []=/"",pCount,lentcp);
            for (int i=0;i<lentcp;i++)
            {
                printf("//x%.2x",*(datatcp+i)); //hexdump(datatcp+i);
                if(i%10==0)
                {                        
                    printf("/"");
                    printf("/n/"");
                }
            }
            printf("/";/n/n/n");
            for (int i2=0;i2<lentcp;i2++)
            {
                if( *(datatcp+i2)<=127&&*(datatcp+i2)>=20)
                    printf("%c",*(datatcp+i2));
                else
                    printf(".");
            }
            printf("/n/n");
            printf("*******************************************/n");    
        }
        if(    (pIpheader->ip_p)==IPPROTO_UDP&&lentcp!=0)
        {
            pCount++;                        
            dataudp=(unsigned char *) RecvBuf+sizeof(struct ipheader)+sizeof(struct udphdr);
            printf("-UDP-/n");
            printf("/nDestination address->%s/n",szDestIP);
            printf("/nDestination port->%d/n",ntohs(pTcpheader->dport));
            printf("dataudp address->%x/n",dataudp);
            printf("size of ipheader->%i/n",sizeof(struct ipheader));
            printf("size of udpheader->%i/n",sizeof(struct udphdr));
            printf("size of the hole packet->%i/n",ntohs(pIpheader->ip_len));
            printf("/nchar Packet%i []=/"",pCount,lenudp);
            for (int x=0;x<lenudp;x++)
            {
                printf("//x%.2x",*(dataudp+x));
                if (x%10==0)
                {                        
                    printf("/"");
                    printf("/n/"");
                }
            }
            printf("/";/n/n/n");
            for (int x2=0;x2<lenudp;x2++)
            {
                if( *(dataudp+x2)<=127&&*(dataudp+x2)>=20)
                    printf("%c",*(dataudp+x2));
                else
                    printf(".");
            }
            printf("/n/n");
            printf("*******************************************/n");
        }
    }
要用＂伪造数据包＂的方法，来禁止一切TCP连接，用Winpcap改写的代码为：
#include <winsock2.h>
#include <windows.h>
#include <ws2tcpip.h>
#include <stdio.h>
#include <stdlib.h>
#pragma comment(lib,"ws2_32.lib")
#define MAX_HOSTNAME_LAN 255
#define SIO_RCVALL _WSAIOW(IOC_VENDOR,1)
#define MAX_ADDR_LEN 16
struct ipheader {
unsigned char ip_hl:4, ip_v:4; /* this means that each member is 4 bits */
unsigned char ip_tos;
unsigned short int ip_len;
unsigned short int ip_id;
unsigned short int ip_off;
unsigned char ip_ttl;
unsigned char ip_p;
unsigned short int ip_sum;
unsigned int ip_src;
unsigned int ip_dst;
}; /* total ip header length: 20 bytes (=160 bits) */
typedef struct tcpheader {
unsigned short int sport;
unsigned short int dport;
unsigned int th_seq;
unsigned int th_ack;
unsigned char th_x:4;
unsigned char th_off:4;
unsigned char Flags;
unsigned short int th_win;
unsigned short int th_sum;
unsigned short int th_urp;
}TCP_HDR;
typedef struct udphdr {
unsigned short sport;
unsigned short dport;
unsigned short len;
unsigned short cksum;
}UDP_HDR;
void main()
{
SOCKET sock;
WSADATA wsd;
DWORD dwBytesRet;
unsigned int optval = 1;
unsigned char *dataudp,*datatcp;
int i,pCount=0,lentcp, lenudp;
SOCKADDR_IN sa,saSource, saDest;
struct hostent FAR * pHostent;
char FAR name[MAX_HOSTNAME_LAN];
char szSourceIP[MAX_ADDR_LEN], szDestIP[MAX_ADDR_LEN],RecvBuf[65535] = {0};
struct udphdr *pUdpheader;
struct ipheader *pIpheader;
struct tcpheader *pTcpheader;
WSAStartup(MAKEWORD(2,1),&wsd);
if ((sock = socket(AF_INET, SOCK_RAW, IPPROTO_IP))==SOCKET_ERROR)exit(1);
gethostname(name, MAX_HOSTNAME_LAN);
pHostent = gethostbyname(name);
sa.sin_family = AF_INET;
sa.sin_port = htons(6000);
memcpy(&sa.sin_addr.S_un.S_addr, pHostent->h_addr_list[0], pHostent->h_length);
bind(sock, (SOCKADDR *)&sa, sizeof(sa));
if ((WSAGetLastError())==10013)exit(1);
WSAIoctl(sock, SIO_RCVALL, &optval, sizeof(optval), NULL, 0, &dwBytesRet, NULL, NULL);
pIpheader = (struct ipheader *)RecvBuf;
pTcpheader = (struct tcpheader *)(RecvBuf+ sizeof(struct ipheader ));
pUdpheader = (struct udphdr *) (RecvBuf+ sizeof(struct ipheader ));
while (1)
{
memset(RecvBuf, 0, sizeof(RecvBuf));
recv(sock, RecvBuf, sizeof(RecvBuf), 0);
saSource.sin_addr.s_addr = pIpheader->ip_src;
strncpy(szSourceIP, inet_ntoa(saSource.sin_addr), MAX_ADDR_LEN);
saDest.sin_addr.s_addr = pIpheader->ip_dst;
strncpy(szDestIP, inet_ntoa(saDest.sin_addr), MAX_ADDR_LEN);
lentcp =(ntohs(pIpheader->ip_len)-(sizeof(struct ipheader)+sizeof(struct tcpheader)));
lenudp =(ntohs(pIpheader->ip_len)-(sizeof(struct ipheader)+sizeof(struct udphdr)));
if((pIpheader->ip_p)==IPPROTO_TCP&&lentcp!=0)
{
printf("*******************************************/n");
pCount++;
datatcp=(unsigned char *) RecvBuf+sizeof(struct ipheader)+sizeof(struct tcpheader);
printf("-TCP-/n");
printf("/nDestination address->%s/n",szDestIP);
printf("/nDestination port->%i/n",ntohs(pTcpheader->dport));
printf("datatcp address->%x/n",datatcp);
printf("size of ipheader->%i/n",sizeof(struct ipheader));
printf("size of tcpheader->%i/n",sizeof(struct tcpheader));
printf("size of the hole packet->%i/n",ntohs(pIpheader->ip_len));
printf("/nchar Packet%i [%i]=/"",pCount,lentcp-1);
for (i=0;i<lentcp;i++)
{
printf("//x%.2x",*(datatcp+i));
if (i%10==0)printf("/"/n/"");
}
printf("/";/n/n/n");
for (i=0;i<lentcp;i++)
{
if( *(datatcp+i)<=127&&*(datatcp+i)>=20)printf("%c",*(datatcp+i));
else printf(".");
}
printf("/n/n*******************************************/n");
}
if((pIpheader->ip_p)==IPPROTO_UDP&&lentcp!=0)
{
pCount++;
dataudp=(unsigned char *) RecvBuf+sizeof(struct ipheader)+sizeof(struct udphdr);
printf("-UDP-/n");
printf("/nDestination address->%s/n",szDestIP);
printf("/nDestination port->%d/n",ntohs(pTcpheader->dport));
printf("dataudp address->%x/n",dataudp);
printf("size of ipheader->%i/n",sizeof(struct ipheader));
printf("size of udpheader->%i/n",sizeof(struct udphdr));
printf("size of the hole packet->%i/n",ntohs(pIpheader->ip_len));
printf("/nchar Packet%i [%i]=/"",pCount,lenudp-1);
for (i=0;i<lenudp;i++)
{
printf("//x%.2x",*(dataudp+i));
if (i%10==0)printf("/"/n/"");
}
printf("/";/n/n/n");
for (i=0;i<lenudp;i++)
{
if( *(dataudp+i)<=127&&*(dataudp+i)>=20)printf("%c",*(dataudp+i));
else printf(".");
}
printf("/n/n*******************************************/n");
}
}
}
文章标签：
混合云容灾服务
游客qeoynko2nmbgk
目录
相关文章
double2li
|
Windows
深入探究VC —— 链接器link.exe（4）
在程序编译完成后，生成的文件是以.obj为扩展名的对象文件，link.exe是将这些对象文件与库链接起来以创建可执行文件或动态链接库文件的工具。 link.exe的输入文件包括obj文件、lib文件、exp文件、def文件、res文件、txt文件、ilk文件等等，而输出的文件一般是exe文件、dll文件、sys文件等可执行程序文件。
double2li
1706 0
闻缺陷则喜何志丹
VC6和VS2005(VC8)各项目默认运行时库
VC6和VS2005(VC8)各项目默认运行时库
闻缺陷则喜何志丹
52 0
闻缺陷则喜何志丹
以下代码VC6编译不过，VC8能过
以下代码VC6编译不过，VC8能过
闻缺陷则喜何志丹
36 0
二进制怪兽
|
Windows
[笔记] winpcap编译及使用
[笔记] winpcap编译及使用
二进制怪兽
156 0
文艺小青年
[转]vc中socket编程步骤
文艺小青年
1103 0
科技小先锋
|
编译器 C++ Windows
如何设置VC中的WinpCap开发环境
科技小先锋
1444 0
橘子红了呐
|
C# C++
VC DLL学习
橘子红了呐
1475 0
老朱教授
|
C++
找不到附属汇编 Microsoft.VC80.MFC解决办法
老朱教授
1740 0
技术小美
|
网络安全 网络性能优化
VC与外网VC连接
技术小美
930 0
zting科技
|
C++
C++ 非托管的vc工程中部分文件使用.Net Framwork
zting科技
1039 0