½Ã½ºÅÛ ÇØÅ·

 1574, 1/79 ȸ¿ø°¡ÀÔ  ·Î±×ÀΠ 
   vngkv123
   IDA¿¡¼­ ¼Ò½ºÄڵ带 º¹¿øÇßÀ»¶§

http://www.hackerschool.org/HS_Boards/zboard.php?id=QNA_system&no=1855 [º¹»ç]


*MK_FP¶ó°í ³ª¿À´Â°Ç ¹«¾ó ¸»Çϴ°ǰ¡¿ä?

¶Ç C¿¡¼­ gccÄÄÆÄÀÏÀ» ÇÒ¶§,
__attribute__ ((constructor)) void init()

ÀÌ°Ç ¹¹¸¦ ÀǹÌÇϳª¿ä???

constructor±îÁö´Â ÀÌÇØÇߴµ¥ µÚÀÇ void init()Àº ¹«¾ó ¸»Çϴ°ǰ¡¿ë?

  Hit : 3540     Date : 2017/04/13 10:10



    
pwnnnt *MK_FP´Â ÈçÈ÷ ¸»ÇÏ´Â Ä«³ª¸® °ª ÀÔ´Ï´Ù. 2017/04/14  
pwnnnt void init () Àº ¾Æ¸¶ ÇÁ·Î±×·¥ÀÌ ½ÃÀÛµÉ ¶§ ¾²ÀÌ´Â ÇÔ¼ö °°½À´Ï´Ù. 2017/04/14  
vngkv123 ±× ida¿¡¼­ ¼ýÀÚµÚ¿¡ uLLÀÌ·±½ÄÀ¸·Î ºÙ´øµ¥ ÀÌ·±°Ç ¸Ó¿¡¿©?
unsigned long longÀÌ·±°Ç°¡¿ë?
2017/04/14  
ÇØÄð·¯ MK_FP´Â ¾î¼À¿¡¼­ mov gs:0x14, %eax ÀÌ·±½ÄÀ¸·Î µÅÀÖ´Â°É Çí½º·¹À̷ΠǥÇöÇÒ¶§ ±×·±½ÄÀ¸·Î Ç¥ÇöÇÕ´Ï´Ù
º¸Åë Ä«³ª¸® °¡Á®¿À´Â Äڵ尡 Çí½º·¹ÀÌ¿¡¼­ ±×·¸°Ô ¸¹ÀÌ º¸ÀÔ´Ï´Ù
2017/04/14  
pwnnnt ³×, (un)signed, data type µîÀ» ¸í½ÃÇÑ°Ì´Ï´Ù. 2017/04/14  
1574   pwnable.kr echo1 Áú¹®2 (½ºÆ÷ ÁÖÀÇ)[2]     turttle2s
10/05 1213
1573   LOB GATE¹®Á¦ Ç®¸é¼­ ±Ã±ÝÇÑÁ¡[3]     hackxx123
08/24 868
1572   libc°ü·Ã - 2[5]     lMaxl04
08/24 862
1571   ASLRÀÌ °É·ÁÀÖÀ»¶§ ret¿¡ ROPÀ¸·Î jmp %espÀ» »ç¿ëÇÑ °æ¿ì.[3]     lMaxl04
06/29 1117
1570   ¸®¸ðÆ® ȯ°æ¿¡¼­ÀÇ ½ºÅà ÁÖ¼Ò È®ÀÎ ¹æ¹ýÀÌ ±Ã±ÝÇÕ´Ï´Ù.[2]     lMaxl04
06/16 919
1569   ÇØÅ· ÇÁ¸®¼­¹ö ¾ø¾îÁ³³ª¿ä?[1]     terfkim
04/15 1699
1568   ½ºÅÿ¡ µ¥ÀÌÅÍ ³ÖÀ» ¶§ SIGSEGV[4]     turttle2s
02/04 1429
1567   pwnable.kr echo1 Áú¹®[2]     turttle2s
06/17 1707
1566   ROP strcpy °ü·Ã Áú¹®ÀÔ´Ï´Ù.[3]     heeyoung0511
06/16 1555
1565   Level2 -> Level3 ¿¡¼­ vi¿Í /usr/bin/EditorÀÇ Â÷ÀÌ[2]     hyemin1826
07/18 1785
1564   Trainer3 ftz.hackerschool.org È£½ºÆ® Á¢¼Ó ºÒ°¡[1]     hyemin1826
07/18 3194
1563   dllÀÎÁ§¼Ç ½ÇÇèÁß Áú¹® µå¸³´Ï´Ù.[1]     kkk477
05/31 1825
1562   ÆÐŶ º¹È£È­¸¦ ¸¶½ºÅÍ ÇÏ·Á¸é ¾î¶² °úÁ¤ÀÌ ÀÖ¾î¾ßÇϳª¿ä?     sa0814
04/01 1671
1561   »ç±â[2]     jas08
03/31 1961
1560   ½Ã½ºÅÛ ÄÝÀÌ °¡´ÉÇÑ ¸Þ¸ð¸® ¿µ¿ª°ú ºÒ°¡´ÉÇÑ ¸Þ¸ð¸® ¿µ¿ªÀÌ Á¸ÀçÇϳª¿ä?     ocal
03/30 1712
1559   pwntools »ç¿ë½Ã¿Í ±âº» socket ¸ðµâ ÀÌ¿ë½Ã Â÷ÀÌ?[4]     ocal
01/09 2249
1558   lob level19(nightmare) °ü·ÃÁú¹®[1]     dnjsdnwja
12/18 1723
1557   ftz level2 Áú¹®ÀÖ½À´Ï´Ù[1]     kihyun1998
12/13 1814
1556   ftz level2¹ø Ǫ´Âµ¥¿ä ±ÇÇÑÀÌ...     kihyun1998
12/06 1688
1555   ½Ã½ºÅÛÇØÅ·ÇÒ¶§ [3]     thsrhkdwns
12/05 2168
1 [2][3][4][5][6][7][8][9][10]..[79]

Copyright 1999-2024 Zeroboard / skin by Hackerschool.org / Secure Patch by Hackerschool.org