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   vngkv123
   64bit elfÆÄÀÏ µð¹ö±ë½Ã

http://www.hackerschool.org/HS_Boards/zboard.php?id=QNA_system&no=1850 [º¹»ç]


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  Hit : 2497     Date : 2017/04/08 05:42



    
vngkv123 ¾Æ ±×¸®°í 32bit¿¡¼­´Â rtl½Ã °ÅÁþ½ºÅÃÀ» »ç¿ëÇ޴ٴµ¥ ÀÌ °¡Áþ½ºÅÃÀº ¹«¾ùÀ» ¸»Çϴ°ǰ¡¿ä? 2017/04/08  
pwnnnt Á¦ÀÏ ¿ÞÂÊ ÁÖ¼Ò°¡ ¹«¾ùÀ» ¸»ÇϽô Áö ¸ð¸£°Ú³×¿ä ;¤±;
±×¸®°í °ÅÁþ ½ºÅÃÀÌ ¹«¾ùÀ» ¸»ÇϽô°ÅÁÒ ?
2017/04/08  
vngkv123 ¸Þ¸ð¸® ÁÖ¼Ò¿µ Á¦ÀÏ¿ÞÂÊ¿¡ Ç¥½ÃµÇ´Â.
(gdb) x/10i 0x44a4f0
0x44a4f0: Cannot access memory at address 0x44a4f0
(gdb)
0x44a4f1: Cannot access memory at address 0x44a4f1


°ÅÁþ½ºÅÃÀº Àúµµ ¹®¼­º¸´Ù°¡ º¸°ÔµÈ°Å¶ó ¹» ¸»Çϴ°ÇÁö ¸ô¶ó¼­..
2017/04/08  
ÇØÄð·¯ °ÅÁþ½ºÅÃÀ̶õ°Ç ÀϹÝÀûÀΠǥÇöÀº ¾Æ´Ñµ¥
1. BSS°°ÀÌ ÁÖ¼Ò¸¦ ¿ì¸®°¡ ½±°Ô ¾Ë ¼ö ÀÖ°í R/W ±ÇÇÑÀÌ ÀÖ¾î ÀÚÀ¯·Ó°Ô ¾µ ¼ö ÀÖ´Â ¸Þ¸ð¸®
2. EBP¸¦ º¯Á¶ÇÑ »óÅ¿¡¼­ leave; ret À» ½ÇÇàÇÔÀ¸·Î½á esp°¡ º¯Á¶µÇ¾î '½ºÅÃ'À» ¿øÇÏ´Â ¸Þ¸ð¸®·Î ¸¸µå´Â ±â¹ý = fake ebp
ÀÌ µÑ Áß ÇϳªÀεíÇÕ´Ï´Ù

±×¸®°í ÁÖ¼Ò´Â µüÈ÷ Àǹ̰¡ ¾ø½À´Ï´Ù
2017/04/09  
pwnnnt ³×,, ¸» ±×´ë·Î °¡»ó ¸Þ¸ð¸® Áּҳ׿ä. 2017/04/10  
ppuuv8585 .. 2017/06/23  
1574   pwnable.kr echo1 Áú¹®2 (½ºÆ÷ ÁÖÀÇ)[2]     turttle2s
10/05 1206
1573   LOB GATE¹®Á¦ Ç®¸é¼­ ±Ã±ÝÇÑÁ¡[3]     hackxx123
08/24 861
1572   libc°ü·Ã - 2[5]     lMaxl04
08/24 853
1571   ASLRÀÌ °É·ÁÀÖÀ»¶§ ret¿¡ ROPÀ¸·Î jmp %espÀ» »ç¿ëÇÑ °æ¿ì.[3]     lMaxl04
06/29 1111
1570   ¸®¸ðÆ® ȯ°æ¿¡¼­ÀÇ ½ºÅà ÁÖ¼Ò È®ÀÎ ¹æ¹ýÀÌ ±Ã±ÝÇÕ´Ï´Ù.[2]     lMaxl04
06/16 915
1569   ÇØÅ· ÇÁ¸®¼­¹ö ¾ø¾îÁ³³ª¿ä?[1]     terfkim
04/15 1694
1568   ½ºÅÿ¡ µ¥ÀÌÅÍ ³ÖÀ» ¶§ SIGSEGV[4]     turttle2s
02/04 1424
1567   pwnable.kr echo1 Áú¹®[2]     turttle2s
06/17 1703
1566   ROP strcpy °ü·Ã Áú¹®ÀÔ´Ï´Ù.[3]     heeyoung0511
06/16 1554
1565   Level2 -> Level3 ¿¡¼­ vi¿Í /usr/bin/EditorÀÇ Â÷ÀÌ[2]     hyemin1826
07/18 1783
1564   Trainer3 ftz.hackerschool.org È£½ºÆ® Á¢¼Ó ºÒ°¡[1]     hyemin1826
07/18 3192
1563   dllÀÎÁ§¼Ç ½ÇÇèÁß Áú¹® µå¸³´Ï´Ù.[1]     kkk477
05/31 1824
1562   ÆÐŶ º¹È£È­¸¦ ¸¶½ºÅÍ ÇÏ·Á¸é ¾î¶² °úÁ¤ÀÌ ÀÖ¾î¾ßÇϳª¿ä?     sa0814
04/01 1667
1561   »ç±â[2]     jas08
03/31 1960
1560   ½Ã½ºÅÛ ÄÝÀÌ °¡´ÉÇÑ ¸Þ¸ð¸® ¿µ¿ª°ú ºÒ°¡´ÉÇÑ ¸Þ¸ð¸® ¿µ¿ªÀÌ Á¸ÀçÇϳª¿ä?     ocal
03/30 1709
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 1720
1557   ftz level2 Áú¹®ÀÖ½À´Ï´Ù[1]     kihyun1998
12/13 1811
1556   ftz level2¹ø Ǫ´Âµ¥¿ä ±ÇÇÑÀÌ...     kihyun1998
12/06 1687
1555   ½Ã½ºÅÛÇØÅ·ÇÒ¶§ [3]     thsrhkdwns
12/05 2162
1 [2][3][4][5][6][7][8][9][10]..[79]

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