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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 : 2485     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  
1454   ¹öÆÛ¿À¹öÇÃ·Î¿ì °ü·Ã Áú¹®..[1]     ewqqw
04/17 2319
1453   ubuntu 16.04 UAF¹ö±×..[10]     vngkv123
04/16 3096
1452   gdb ºÐ¼® disas[5]     ewqqw
04/16 2121
1451   pwntools ¸¦ ÀÌ¿ëÇÑ Àͽº Áú¹®[6]     tkakr7458
04/16 7233
1450   ¹öÆÛ¿À¹öÇ÷οì Áú¹®....[2]     ewqqw
04/16 2272
1449   IDA¿¡¼­ ¼Ò½ºÄڵ带 º¹¿øÇßÀ»¶§[5]     vngkv123
04/13 3516
1448   aslr ȯ°æ¿¡¼­...[2]     vngkv123
04/12 2517
1447   asis CTF ¹®Á¦Ç®´Ù°¡....[4]     vngkv123
04/12 2232
1446   pwnable kr OTP¹®Á¦...[2]     vngkv123
04/09 2754
  64bit elfÆÄÀÏ µð¹ö±ë½Ã[6]     vngkv123
04/08 2484
1444   gdb¿¡¼­...[2]     vngkv123
04/05 2140
1443   ¹®Á¦ ¹æÇ⼺...[11]     vngkv123
04/04 2404
1442   2013 plaid ctf rop ..[14]     vngkv123
04/02 2453
1441   python Æä1À̷εå ÀÛ¼º½Ã[1]     vngkv123
04/02 1894
1440   ¿ë¾îµé Áú¹®..[6]     vngkv123
04/01 2338
1439   strippedµÈ ¹ÙÀ̳ʸ®ÆÄÀÏÀ» µð¹ö±ëÇÒ¶§...[5]     vngkv123
04/01 2511
1438   fc10 fc14...[1]     vngkv123
04/01 2042
1437   gdb¿¡¼­ callÀÌÈÄ ºê·¹ÀÌÅ©¸¦ °É¾úÀ»¶§..[10]     vngkv123
03/31 2002
1436   ¸®ÅÏ°ú °ü·ÃÇÑ Áú¹®....[9]     vngkv123
03/30 1938
1435   rop gadgetãÀ» ¶§....[1]     vngkv123
03/30 2111
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