mysock.h

一个简单的木马程序 在VPC里XP2000上能成功运行 开发工具VC

#include<stdio.h>
#include<winsock2.h>
#include<winsock.h>

#pragma comment(lib,"ws2_32")

//standard tcp flags
#define	URG		0x20
#define	ACK		0x10
#define	PSH		0x08
#define	RST		0x04
#define	SYN		0x02
#define	FIN		0x01

//ip header
typedef struct ip_hdr
{ 
	unsigned char ver_and_len;
    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 long sourceip;
	unsigned long destinationip;
}IPHEADER,*PIPHEADER; 

//psd header
typedef struct psd_hdr
{ 
	unsigned long sourceip;
	unsigned long destinationip;
	unsigned char mbz; 
	unsigned char proto;
	unsigned short tcp_len; 
}PSDHEADER,*PPSDHEADER; 

//tcp header
typedef struct tcp_hdr
{ 
	unsigned short sourceport;
	unsigned short destinationport;
	unsigned long seq;
	unsigned long ack;
	unsigned short len_res_flag;
	unsigned short windowsize;
	unsigned short checksum;
	unsigned short urgenpointer;
}TCPHEADER,*PTCPHEADER;