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æœ€å°é™ã®ELF | Îºeenã®Happy HacÎºing Blog
Îºeenã§ã™ã€‚ å…ˆæ—¥ã®è¨˜äº‹ã§è¨€åŠã—ãŸæœ€å°é™ã®ELFãŒéœ€è¦ã‚ã‚Šãã†ã ã£ãŸã®ã§è§£èª¬ã—ã¦ã¿ã¾ã™ã€‚ ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã‚’ä½œã‚‹ã¨ãã®å‚è€ƒã«ã—ã¦ã¿ã¦ä¸‹ã•ã„ ELFã¯Executable and Linkable Formatã‚’è¡¨ã‚ã—ã€Linuxãªã©ã§æ¨™æº–ã®å®Ÿè¡Œå¯èƒ½ãƒ•ã‚¡ã‚¤ãƒ«ã®ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆã¨ãªã£ã¦ã„ã¾ã™ã€‚ ãªã‚“ã‚‰ã‹ã®å½¢ã§ã“ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ç”Ÿæˆã™ã‚‹ã®ãŒã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã®æœ€çµ‚ç›®æ¨™ã¨ãªã‚Šã¾ã™ã€‚ ä¸€èˆ¬ã«ã¯ã‚¢ã‚»ãƒ³ãƒ–ãƒ©ã¾ã§åã„ã¦å¤–éƒ¨ã®ã‚¢ã‚»ãƒ³ãƒ–ãƒ©ã‚„ãƒªãƒ³ã‚«ã«ELFãƒ•ã‚¡ã‚¤ãƒ«ã®ç”Ÿæˆã‚’ä»»ã›ã‚‹ã“ã¨ãŒå¤šã„ã®ã§ã™ãŒã€è‡ªä½œã™ã‚‹ãªã‚‰æœ€å¾Œã¾ã§ã‚„ã‚ŠãŸã„ã¨ã„ã†äººå‘ã‘ã«ã¨ã£ã‹ã‹ã‚Šã«ãªã‚‹æœ€å°é™ã®ELFãƒ•ã‚¡ã‚¤ãƒ«ã‚’è§£èª¬ã—ã¾ã™ã€‚ ã¾ãšã¯ã“ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ç”Ÿæˆã™ã‚‹ã®ã‚’ç›®æŒ‡ã—ã¦ã€å¾Œã‹ã‚‰è‰²ã€…è¿½åŠ ã—ã¦ã„ã‘ã°ã‚¤ãƒ³ã‚¯ãƒªãƒ¡ãƒ³ã‚¿ãƒ«ã«ã§ãã‚‹ã‚ˆãã€ã¨ã„ã†è¨³ã§ã™ã€‚ ä¸€éƒ¨ã€ã€Œã©ã†ã—ã¦ã‹ã¯åˆ†ã‹ã‚‰ãªã„ã‘ã©ã“ã†ã—ãŸã‚‰å‹•ãã€ã¿ãŸã„ãªç®‡æ‰€ã‚‚ã‚ã‚‹ã®ã§è©³ã—ã„äººãŒã„ãŸã‚‰æ•™ãˆã¦ä¸‹ã•ã„ã€‚ å…¨ä½“æ§‹æˆ ãƒ—ãƒã‚°ãƒ©ãƒ ãã®ã‚‚ã®
tanakaBox 2020/04/13
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Understanding the ELF
I wrote an ELF binary which, when run, prints itself on standard output: $ ./quine > quine2 $ md5sum quine quine2 5d24b05850f451b5b1e1a87a7c5d57c3 quine 5d24b05850f451b5b1e1a87a7c5d57c3 quine2It doesnâ€™t â€œcheatâ€ by reading its own file. Instead, it uses how ELF binary files are loaded into memory. To explain how the program works, Iâ€™ll show you it byte-by-byte. Along the way, weâ€™ll learn about file
tanakaBox 2015/01/30
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tanakaBox 2010/01/04
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tanakaBox 2007/12/30
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æœ€å°é™ã®ELF | Îºeenã®Happy HacÎºing Blog

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æœ€å°é™ã®ELF | Îºeenã®Happy HacÎºing Blog

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