218, 7/11 ȸ¿ø°¡ÀÔ  ·Î±×ÀΠ 
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   http://cyworld.co.kr/codesire
   [°øÁö] GATE1 ¼­¹ö°¡ ¿Ï¼ºµÇ¾ú½À´Ï´Ù.

http://www.hackerschool.org/HS_Boards/zboard.php?id=bof_fellowship&no=86 [º¹»ç]


[¸÷ ¸®½ºÆ®]
LEVEL1 (gate -> gremlin) :  simple bof
LEVEL2 (gremlin -> cobolt) : small buffer
LEVEL3 (cobolt -> goblin) : small buffer + stdin
LEVEL4 (goblin -> orc) : egghunter
LEVEL5 (orc -> wolfman) : egghunter + bufferhunter
LEVEL6 (wolfman -> darkelf) : check length of argv[1] + egghunter + bufferhunter
LEVEL7 (darkelf -> orge) : check argv[0]
LEVEL8 (orge -> troll) : check argc
LEVEL9 (troll -> vampire) : check 0xbfff
LEVEL10 (vampire -> skeleton) : argv hunter
LEVEL11 (skeleton -> golem) : stack destroyer
LEVEL12 (golem -> darkknight) : sfp
LEVEL13 (darkknight -> bugbear) : RTL1
LEVEL14 (bugbear -> giant) : RTL2, only execve
LEVEL15 (giant -> assassin) : no stack, no RTL
LEVEL16 (assassin -> zombie_assassin) : fake ebp
LEVEL17 (zombie_assassin -> succubus) : function calls
LEVEL18 (succubus -> nightmare) : plt
LEVEL19 (nightmare -> xavis) : fgets + destroyers
LEVEL20 (xavis -> death_knight) : remote BOF


ÀÌ·¸°Ô Çؼ­ ÃÑ 20¸¶¸®ÀÇ ¸ó½ºÅ͵éÀÌ GATE1 ¼­¹ö¿¡ ¹èÄ¡µÇ¾ú½À´Ï´Ù.

LEVEL20±îÁö ¸ðµÎ ÀâÀ¸½Å ºÐµé²´ º»ÀÎ IDÀÇ ±ÇÇÑÀ» »ó½Â½ÃÄÑ µå¸³´Ï´Ù.

±ÇÇÑÀÌ »ó½ÂµÇ¸é ÀÌ °Ô½ÃÆÇÀÇ ¸ðµç ºñ¹Ð ±ÛµéÀ» º¼ ¼ö ÀÖ½À´Ï´Ù.

±×¸®°í GATE2·Î ÁøÀÔÇÒ ¼ö ÀÖ´Â °Ô½ÃÆÇ ÁÖ¼Ò¸¦ ¾Ë·Áµå¸³´Ï´Ù.
(¸çÄ¥ Àü¿¡ LEVEL15±îÁö Ç®¸é ÁÖ¼Ò¸¦ ¾Ë·Áµå¸°´Ù°í Çß¾ú´Âµ¥ LEVEL20À¸·Î Á¤Á¤ÇÕ´Ï´Ù.)

GATE2¿¡¼± ´õ ÀÌ»ó RedhatÀÌ ¾Æ´Ñ, Fedora ȯ°æ¿¡¼­ ¹®Á¦¸¦ Ç®¾î ³ª°¡°Ô µË´Ï´Ù.

LEVEL20À» Á¡·ÉÇϽŠºÐÀº death_knight µð·ºÅ丮¿¡ ¶³±ÅÁø ¾ÆÀÌÅÛÀ» º¹»çÇؼ­

°Ô½ÃÆÇ¿¡ ºñ¹Ð ±Û·Î ºÙ¿©³Ö±â ÇØÁֽøé Á¦°¡ ´ñ±Û·Î GATE2ÀÇ ÁÖ¼Ò¸¦ ¾Ë·Áµå¸³´Ï´Ù.


  Hit : 2804     Date : 2010/03/30 03:43



    
CodeAche ¿À¿ì +_+
ÁÖ¼Ò´Â ¾ðÁ¦°ø°³µÇ³ª¿ä +_+
2010/03/30  
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buff3r ¿À¿Ê !! Fedora !!! XD 2010/03/31  
98 ºñ¹Ð±ÛÀÔ´Ï´Ù  °ñ·½ Áú¹®!¤Ð[4]     »êÀû
04/23 32
97 ºñ¹Ð±ÛÀÔ´Ï´Ù  death_knightÁú¹®ÀÔ´Ï´Ù.[2]     CodeAche
04/23 12
96 ºñ¹Ð±ÛÀÔ´Ï´Ù  xavius     CodeAche
04/22 12
95 ºñ¹Ð±ÛÀÔ´Ï´Ù  [°ñ·½]20¹ÙÀÌÆ® ...[1]     buff3r
04/22 16
94   ¿øÁ¤´ë Âü°¡ÀÚ ºÐµé ÇöÀç ·¾ÀÌ?[4]     ¸Û¸Û
04/22 2629
93   Fedora ´ë·úÀÌ ¾÷µ¥ÀÌÆ® µÇ¾ú½À´Ï´Ù     ¸Û¸Û
04/22 2433
92 ºñ¹Ð±ÛÀÔ´Ï´Ù  ¿¡±¸ skeleton.[2]     »êÀû
04/22 13
91 ºñ¹Ð±ÛÀÔ´Ï´Ù  ½ºÄÌ·¹Åæ Áú¹®!¤Ð[7]     »êÀû
04/15 41
90 ºñ¹Ð±ÛÀÔ´Ï´Ù  goblin -> death_knight °£´ÜÇÑ Ç®ÀÌ º¸°í¼­[1]     trynerr
04/13 39
89   ¿øÁ¤´ëºÐµé Èû³»¼¼¿ë~     ¸Û¸Û
04/12 2602
88 ºñ¹Ð±ÛÀÔ´Ï´Ù  nightmare[1]     CodeAche
04/07 20
87 ºñ¹Ð±ÛÀÔ´Ï´Ù  succubus[2]     CodeAche
04/07 15
86 ºñ¹Ð±ÛÀÔ´Ï´Ù  ½áÅ¥¹ö½º ¾à°£ ÀÌ»óÇÑÁ¡![3]     CodeAche
04/03 12
85 ºñ¹Ð±ÛÀÔ´Ï´Ù  zomebie_assassin     CodeAche
04/03 12
84 ºñ¹Ð±ÛÀÔ´Ï´Ù  Èì .... °Ë»öÀ» Çغ¸¾Ò½À´Ï´Ù.[1]     buff3r
04/01 11
83   ÇÑ°¡Áö ±Ã±ÝÇÑÁ¡![1]     CodeAche
03/31 2271
82 ºñ¹Ð±ÛÀÔ´Ï´Ù  go1em Áú¹®ÀÌ¿ä .. ![2]     buff3r
03/31 9
81 ºñ¹Ð±ÛÀÔ´Ï´Ù  skeleton¿¡¼­ Áú¹®ÀÌ¿ä.....¤Ð[2]     soulym
03/31 12
80   ºñ¹Ð±ÛÀÔ´Ï´Ù  [re] skeleton¿¡¼­ Áú¹®ÀÌ¿ä.....¤Ð[2]     soulym
03/31 12
  [°øÁö] GATE1 ¼­¹ö°¡ ¿Ï¼ºµÇ¾ú½À´Ï´Ù.[3]     ¸Û¸Û
03/30 2803
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