97, 1/5 ȸ¿ø°¡ÀÔ  ·Î±×ÀΠ 
   skyclad1975
   gdb ¿¡¼­ display·Î º¯¼ö¸¦ º¸´Â °Í¿¡ ´ëÇÑ Áú¹®

http://www.hackerschool.org/HS_Boards/zboard.php?id=QNA_Reversing&no=85 [º¹»ç]


Áú¹® ¿Ã¸®°í ´äº¯ ¹ÞÀºÁö ¾ó¸¶ µÇÁöµµ ¾Ê¾ÒÁö¸¸ ¶Ç ³­°ü¿¡ ºÀÂøÇÏ¿© Áú¹®µå·Áº¾´Ï´Ù.

display¸¦ º¯¼ö³ª ·¹Áö½ºÅÍ¿¡ °É¾î µÎ¸é ni µîÀ¸·Î ½ÇÇàÇÒ ¶§¸¶´Ù °è¼ÓÇؼ­ ±× °ªÀÌ ³ªÅ¸³­´Ù°í ¾Ë°í Àִµ¥¿ä, $rbp-0x4 º¯¼öÀÇ º¯È­¸¦ ¾Ë±â À§ÇØ display¸¦ °É¾ú´õ´Ï


(gdb) x/d $rbp-0x4
0x7fffffffe38c:        2
(gdb) display /d $rbp-0x4
7: /d $rbp-0x4 = 140737488348044



ÀÌ·± ½ÄÀ¸·Î ³ªÅ¸³³´Ï´Ù.
¾î¶»°Ô ÇØ¾ß ÇÒ±î¿ä?

±×³É º¸±â À§ÇØ x/d $rbp-0x4 ¸¦ ÇßÀ» °æ¿ì¿¡´Â Àß µÇ´Âµ¥,
display ÇßÀ» ¶§¸¸ ÀÌ·¯³×¿ä.

¶Ç, watch $rbp-0x4 ¸¦ ÀÌ¿ëÇؼ­ µ¹·Á ºÃ´õ´Ï


Old value = (void *) 0x7fffffffe38c
New value = (void *) 0x7fffffffe6f7


ÀÌ·¸°Ô ³ª¿É´Ï´Ù.

Á¦´ë·Î 10Áø¼ö·Î º¯¼öÀÇ °ªÀ» º¸·Á¸é ¾î¶»°Ô ÇØ¾ß ÇÒ±î¿ä...

ÇØÄ¿½ºÄð ´É·ÂÀںеé, ºÎŹµå¸³´Ï´Ù!



+ Ãß°¡Áú¹®)

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  Hit : 2942     Date : 2014/12/11 04:54



    
cd80 x/d $rbp-4´Â $rbp-4°¡ °¡¸£Å°´Â ÁÖ¼ÒÀÇ µ¥ÀÌÅ͸¦ decimal·Î ³ªÅ¸³»¶õ ¸í·ÉÀÌ°í
disp /d $rbp-4´Â $rbp-4¶ó´Â ½ÄÀ» decimal·Î ³ªÅ¸³»¶õ ¸í·ÉÀÔ´Ï´Ù
disp/wd $rbp-4 ·Î ÇÏ½Ã¸é ¿øÇϽô´ë·Î ÇϽǼö ÀÖ½À´Ï´Ù
2014/12/12  
97   ÀÇ·ÚÁ» ºÎŹµå¸±·Á±¸ ÇÕ´Ï´Ù.     vbvb92
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96   ÀÌ°Å ¿ÖÀִ°Å¡?[2]     creeper
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95   and esp, 0fffffff8[3]     choboKing
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94   angr Áú¹®[2]     turttle2s
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93   angr¿¡¼­ ½ºÅà ÁÖ¼Ò ±¸Çϱâ[3]     turttle2s
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92   ÀÚ±â¾ÐÃà½ÇÇàÈ­ÀÏ?? IDA³ª ¿Ã¸®µð¹ö±×·Î ±î¸é ¿£Æ®¸®Æ÷ÀÎÆ®°¡ ¾ø´Ù°í³ª¿É´Ï´Ù[4]     kywoo81
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91   Ã¥ ȤÀº ¹®¼­ Ãßõ Á» ÇØÁÖ¼¼¿ä~     likewinds
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90   Á¦°¡ ¸®¹ö½Ì °øºÎÁ» ÇÏ·Á°í Çϴµ¥ ÀÌ°Å ºÐ¼®Á» ÇØÁֽǼö ÀÖ³ª¿ä     majesty7
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89   À©µµ¿ì ¸®¹ö½Ì°ú ¾Èµå·ÎÀÌµå ¸®¹ö½Ì..[1]     hallohackers
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88   ÇÁ·Î±×·¥ ƯÁ¤ ¿µ¿ª ½ÇÇà °¨Áö.[2]     Einsteins
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87   Ǫ¸¥ÇϴôԲ² °³ÀÎÁú¹®....[2]     creamitation
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86   dll ¸®¹ö½Ì ÇÒ ¶§ ÁÖ¼Ò °è»ê¹ý Áú¹®ÀÌ¿ä¤Ð![3]     spe
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85   dll ¸®¹ö½ÌÁú¹®.     stares
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84   dumpcode Çì´õÆÄÀÏ ¸»Àä..[1]     ys200209
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83   DWORD PTR SS ¿Í DWORD PTR DS[1]     skyclad1975
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81   entry point alert ¿¡·¯Á» ¾Ë·ÁÁÖ¼¼¿ä..     psy2815
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  gdb ¿¡¼­ display·Î º¯¼ö¸¦ º¸´Â °Í¿¡ ´ëÇÑ Áú¹®[1]     skyclad1975
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79   IDA 64ºñÆ® ¿î¿µÃ¼Á¦¿¡¼­ µ¹¸®´Â ¹æ¹ý ¾ø³ª¿ä ??[3]     7evenLeaf
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