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   canopus
   ÀÌ°÷¿¡ ÀÖ´Â ½ºÅÚ½º Æ÷Æ®½ºÄËÀ» ¸¸µé¾îº¸°í;;

http://www.hackerschool.org/HS_Boards/zboard.php?id=QNA_programming&no=985 [º¹»ç]



http://hackerschool.org/~research/study/SS_4.htm

1,2,3°­Á¸¦ ´Ù º¸°í ½Ç½ÀÇѵÚ,

ÀÌ°÷ µµ¼­°ü¿¡ ÀÖ´Â À§ ÀڷḦ º¸°í Á¤¸» Åä¾¾ Çϳª ¾ÈƲ¸®°í ;;

¿­½ÉÈ÷ ŸÀÌÇÎ(-_-)ÇØ ºÃ½À´Ï´Ù.

±×ÈÄ µÎ±ÙµÎ±ÙÇÏ°Ô ½ÇÇàÀ» ÇØ ºÃ½À´Ï´Ù.

gcc -o scan scan.c

./scan localhost

±×·¨´õ´Ï °á°ú°¡

[Wise Scanner Started.]

ÀÌ·¸°Ô¸¸ ³ª¿À°í ´õÀÌ»ó ¾È³ª¿À´Â°ÍÀ̾ú½À´Ï´Ù!! Ä¿Èæ

±×·¡¼­ ´çȲÇؼ­ ¾Æ·¡ºÎºÐ °÷°÷À»

printf( "\n[Wise Scanner Started.]\n\n" );
printf("a") <-- ¿ä·¸°Ô Ãß°¡


        // 1¹ø¿¡¼­ºÎÅÍ 500¹ø±îÁö ½ºÄµ

        for( port=1; port<500; port++ ){

                // raw socket »ý¼º

raw_socket = socket( AF_INET, SOCK_RAW, IPPROTO_RAW );

setsockopt( raw_socket, IPPROTO_IP, IP_HDRINCL, (char *)&on, sizeof(on));
printf("b"); <--¿ä·¸°Ô Ãß°¡


                // TCP, IP Çì´õ ÃʱâÈ­

                iphdr = (struct iphdr *)packet;

                memset( (char *)iphdr, 0, 20 );

                tcphdr = (struct tcphdr *)(packet + 20 );

                memset( (char *)tcphdr, 0, 20 );



                // TCP Çì´õ Á¦ÀÛ

                tcphdr->source = htons( 777 );

                tcphdr->dest = htons( port );

                tcphdr->seq = htonl( 92929292 );

                tcphdr->ack_seq = htonl( 12121212 );

                tcphdr->doff = 5;

                tcphdr->syn = 1;

                tcphdr->window = htons( 512 );
--ÀÌÇÏ »ý·«ÀÔ´Ï´Ù;; --

ÇÏ°í ½ÇÇà½ÃÄ×´õ´Ï ¿ª½Ã °á°ú´Â

[Wise Scanner Started.]

ÀÌ°Å ¹Û¿¡ ¾È³ª¿À´Â°ÍÀ̾ú½À´Ï´Ù!! ³Ê¹« Ȳ´ç´çȲ½º·¯¿ö¼­(Àû¾îµµ a´Â ³ª¿Í¾ßÇϴµ¥)

À§¿¡ forÀÌÈÄ ºÎºÐºÎÅÍ ÇÁ·Î±×·¥ ³¡³¯¶§±îÁö ÁÖ¼®Ã³¸® Çعö¸®´Ï °á°ú°¡

[Wise Scanner Started.]

a

[Scan ended.]

ÀÌ·¸°Ô ³ª¿À´õ±º¿ä -_-);;; Ȥ½Ã ÀÌÀ¯ ¾Ë°í°è½ÅºÐ!

ºÎµð ²À °¡¸£ÃÄ ÁÖ¼¼¿ä!!

(Âü°í·Î ·çÆ®·Î ¸¸µé°í ·çÆ®·Î ÄÄÆÄÀÏÇÏ°í ·çÆ®·Î ½ÇÇàÇß½À´Ï´Ù.)

¾Æ´Ï¸é ÁüÀÛ°¡´Â°Å¶óµµ..;;




  Hit : 2676     Date : 2005/12/27 07:19



    
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indra printf("a\n"); ·Î Çϰųª printf() »ç¿ë ÈÄ ¾Æ·¡¶óÀο¡ fflush(stdout); À» Ãß°¡Çؼ­ °­Á¦ ¹öÆÛºñ¿ì±â¸¦ ½ÇÇàÇϸé Ãâ·ÂµÉ°Í °°½À´Ï´Ù. 2005/12/28
indra linux ¿¡¼­´Â ÇÁ·Î±×·¥ ½ÇÇàÀÌ Àß µÇ´ÂÁö ½Ã½ºÅÛÄÝÀÌ Àß ½ÇÇàµÇ´ÂÁö ¾Ë¾Æ º¼ ¼ö ÀÖµµ·Ï strace ¶ó´Â ¸í·ÉÀ» Áö¿øÇÏ°í ÀÖ½À´Ï´Ù. Çѹø »ç¿ëÇØ º¸¼¼¿ä. 2005/12/28
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