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   lMaxl04
   http://1111
   libc°ü·Ã - 2

http://www.hackerschool.org/HS_Boards/zboard.php?id=QNA_system&no=2009 [º¹»ç]


¸¹Àº ctf¸¦ º¸¸é libc ÆÄÀÏÀ» Á¦°øÇÕ´Ï´Ù.
ÇØ´ç ÆÄÀÏÀ» ld preload¸¦ ÅëÇØ ÂüÁ¶Çϸé, ld ÆÄÀÏ°ú ¹öÀüÀÌ ¸ÂÁö ¾Ê¾Æ ¿¡·¯°¡ ¹ß»ýÇÏ´Â °æ¿ì°¡ ´ëºÎºÐÀÎ °Í °°½À´Ï´Ù.
ÀÌ °æ¿ì ¾î¶»°Ô ÇØ°áÇÏ´Â°Ô ÁÁÀº°¡¿ä?

´õºÒ¾î libcÀÇ md5 °ªÀ¸·Î ld ÆÄÀÏÀ» ã¾Æ libc¿Í ld ÆÄÀÏÀ» ±³Ã¼ÇØÁÙ ¼ö ÀÖ±ä ÇÕ´Ï´Ù¸¸, ld ÆÄÀÏÀÌ Àß Ã£¾ÆÁöÁö ¾Ê´Â °æ¿ìµµ ¸¹ÀÌ ÀÖ´Â °Í °°½À´Ï´Ù.
ÀÌ °æ¿ì¿¡´Â ¾î¶»°Ô Çϳª¿ä?

  Hit : 1243     Date : 2022/08/24 07:21



    
cd80 Á¦°øµÈ libc¶û °°ÀÌ ½ÇÇàÇØ¾ß ÇÒ ÀÌÀ¯°¡ ¾ø½À´Ï´Ù
±×³É ³» ½Ã½ºÅÛ¿¡ ÀÖ´Â libc·Î ÀͽºÇ÷ÎÀÕ ÀÛ¼ºÇÏ°í ½ÇÁ¦ exploitÇÒ ¶§´Â ¸®¸ðÆ®¼­¹öÀÇ offsetÀ¸·Î ¼öÁ¤ÇØÁÖ¸é µË´Ï´Ù
2022/08/24  
lMaxl04 ¾È³çÇϼ¼¿ä ¤¾¤¾
¸»¾¸ÇϽŠ°Íµµ ÀÌÇØ°¡ µÇ°í ´ëºÎºÐ ±×·¸°Ô Ç®°í ÀÖ½À´Ï´Ù¸¸, ±×³É ¿øÃÊÀûÀÎ ±Ã±ÝÁ¡ÀÔ´Ï´Ù ¤¾¤¾
2022/08/24  
lMaxl04 ¿ä¾àÇϸé
1. ldÆÄÀÏ ¾øÀÌ libc ÆÄÀÏÀ» ·Îµå °¡´ÉÇÑ°¡
2. libc ¹öÀü¿¡ ¸Â´Â ld ÆÄÀÏÀº ¾î¶»°Ô ¾îµð¼­ ãÀ» ¼ö Àִ°¡
ÀÔ´Ï´Ù ¤¾¤¾
2022/08/24  
cd80 libcÀÇ md5 °ªÀ¸·Î ldÆÄÀÏÀ» ã¾Æº¸¼Ì´Ü°ÉºÁ¼­ ¾Æ½Ç°Å°°±âµµÇѵ¥ Á¦°¡ ¾Ë±â·Ð libc-database°¡ °¡Àå ÁÁÁö ¾ÊÀ»±î ½Í½À´Ï´Ù
https://github.com/niklasb/libc-database
¿©±â¿¡µµ ´ÙÀÖ´Â°Ç ¾Æ´Ï±äÇÏÁö¸¸ ²Ï ¸¹ÀÌ ÀÖ½À´Ï´Ù

1¹øÀº Àß ¸ð¸£°Ú³×¿ä
2022/08/25  
lMaxl04 °¨»çÇÕ´Ï´Ù. Çѹø ½ÃµµÇغ¸°Ú½À´Ï´Ù ¤¾¤¾ 2022/08/25  
1575   LOB ¹®Á¦ ÀͽºÇ÷ÎÀÕÀ» C·Î ÀÛ¼ºÇϸ鼭 Ǫ´Âµ¥¿ä.[2]     ÇØÅ·ÀßÇÏ°í½Í´Ù
09/18 309
1574   pwnable.kr echo1 Áú¹®2 (½ºÆ÷ ÁÖÀÇ)[2]     turttle2s
10/05 1646
1573   LOB GATE¹®Á¦ Ç®¸é¼­ ±Ã±ÝÇÑÁ¡[3]     hackxx123
08/24 1383
  libc°ü·Ã - 2[5]     lMaxl04
08/24 1242
1571   ASLRÀÌ °É·ÁÀÖÀ»¶§ ret¿¡ ROPÀ¸·Î jmp %espÀ» »ç¿ëÇÑ °æ¿ì.[3]     lMaxl04
06/29 1538
1570   ¸®¸ðÆ® ȯ°æ¿¡¼­ÀÇ ½ºÅà ÁÖ¼Ò È®ÀÎ ¹æ¹ýÀÌ ±Ã±ÝÇÕ´Ï´Ù.[2]     lMaxl04
06/16 1267
1569   ÇØÅ· ÇÁ¸®¼­¹ö ¾ø¾îÁ³³ª¿ä?[1]     terfkim
04/15 2084
1568   ½ºÅÿ¡ µ¥ÀÌÅÍ ³ÖÀ» ¶§ SIGSEGV[4]     turttle2s
02/04 1779
1567   pwnable.kr echo1 Áú¹®[2]     turttle2s
06/17 2041
1566   ROP strcpy °ü·Ã Áú¹®ÀÔ´Ï´Ù.[3]     heeyoung0511
06/16 1871
1565   Level2 -> Level3 ¿¡¼­ vi¿Í /usr/bin/EditorÀÇ Â÷ÀÌ[2]     hyemin1826
07/18 2171
1564   Trainer3 ftz.hackerschool.org È£½ºÆ® Á¢¼Ó ºÒ°¡[1]     hyemin1826
07/18 3702
1563   dllÀÎÁ§¼Ç ½ÇÇèÁß Áú¹® µå¸³´Ï´Ù.[1]     kkk477
05/31 2214
1562   ÆÐŶ º¹È£È­¸¦ ¸¶½ºÅÍ ÇÏ·Á¸é ¾î¶² °úÁ¤ÀÌ ÀÖ¾î¾ßÇϳª¿ä?     sa0814
04/01 1930
1561   »ç±â[2]     jas08
03/31 2230
1560   ½Ã½ºÅÛ ÄÝÀÌ °¡´ÉÇÑ ¸Þ¸ð¸® ¿µ¿ª°ú ºÒ°¡´ÉÇÑ ¸Þ¸ð¸® ¿µ¿ªÀÌ Á¸ÀçÇϳª¿ä?     ocal
03/30 1970
1559   pwntools »ç¿ë½Ã¿Í ±âº» socket ¸ðµâ ÀÌ¿ë½Ã Â÷ÀÌ?[4]     ocal
01/09 2618
1558   lob level19(nightmare) °ü·ÃÁú¹®[1]     dnjsdnwja
12/18 1984
1557   ftz level2 Áú¹®ÀÖ½À´Ï´Ù[1]     kihyun1998
12/13 2126
1556   ftz level2¹ø Ǫ´Âµ¥¿ä ±ÇÇÑÀÌ...     kihyun1998
12/06 1983
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