[B! ctf] mizdraã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

mizdra id:mizdra

ctfã«é–¢ã™ã‚‹mizdraã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (12)

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ASCII.jpï¼šZaifä¸æ£å‡ºé‡‘äº‹ä»¶ã®çŠ¯äººè¿½è·¡ã«ã¤ãªãŒã‚‹è¨¼æ‹ ã€JDDã‚„ã‚¨ãƒ«ãƒ—ãƒ©ã‚¹ãŒç‰¹å®š (1/3)
Japan Digital Designï¼ˆJDDã€ä¸‰è±UFJãƒ•ã‚£ãƒŠãƒ³ã‚·ãƒ£ãƒ«ãƒ»ã‚°ãƒ«ãƒ¼ãƒ—ï¼‰ã¯2018å¹´11æœˆ5æ—¥ã€ä»®æƒ³é€šè²¨å–å¼•æ‰€ã€ŒZaifã€ã‹ã‚‰9æœˆ14æ—¥ã«æµå‡ºã—ãŸä»®æƒ³é€šè²¨ã€ŒMonacoinã€ã®é€é‡‘æŒ‡ç¤ºå…ƒIPã‚¢ãƒ‰ãƒ¬ã‚¹ã®ç‰¹å®šã«æˆåŠŸã—ãŸã“ã¨ã‚’ç™ºè¡¨ã—ãŸã€‚JDDã¨ã‚¨ãƒ«ãƒ—ãƒ©ã‚¹ã€CTFãƒãƒ¼ãƒ ã®TokyoWesternsãŒåˆåŒã§å®Ÿæ–½ã—ãŸãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆâ€œZaifçŠ¯äººè¿½è·¡ãƒãƒƒã‚«ã‚½ãƒ³â€ã«ã‚ˆã‚‹æˆæžœã€‚ ä»®æƒ³é€šè²¨ãƒ—ãƒ©ãƒƒãƒˆãƒ•ã‚©ãƒ¼ãƒ ã®P2Pãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã«ç€ç›®ã—ãŸèª¿æŸ»æ–¹æ³•ã‚’æŽ¡ç”¨ã—ã€ä¸æ£å‡ºé‡‘ã•ã‚ŒãŸMonacoinã«å¯¾ã—ã¦10æœˆ20æ—¥ã€22æ—¥ã«åˆ¥å£åº§ã¸ã®é€é‡‘æŒ‡ç¤ºã‚’è¡Œã£ãŸãƒ•ãƒ©ãƒ³ã‚¹ã€ãŠã‚ˆã³ãƒ‰ã‚¤ãƒ„ã®IPã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’å‰²ã‚Šå‡ºã—ãŸã€‚ä¸¡æ—¥ã‚’å«ã‚€åˆè¨ˆ4æ—¥é–“ã¶ã‚“ã®ã™ã¹ã¦ã®ãƒˆãƒ©ãƒ³ã‚¶ã‚¯ã‚·ãƒ§ãƒ³ãƒ‡ãƒ¼ã‚¿ã¯ã€çŠ¯äººè¿½è·¡ã«å¿…è¦ãªè¨¼æ‹ ã¨ã—ã¦10æœˆ25æ—¥ã«è¦å¯Ÿåºã¨å¤§é˜ªåºœè¦ã«æä¾›ã•ã‚Œã¦ã„ã‚‹ã€‚ãªãŠP2Pãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã«ç€ç›®ã—ãŸèª¿æŸ»æ–¹æ³•ã¯ã€ç¾æ™‚ç‚¹ã§å›½å†…åˆã ã¨ã„ã†ã€‚ æœ¬ç¨¿ã§ã¯ã“ã®
mizdra 2018/11/05
ctf

security

network
ãƒªãƒ³ã‚¯
SQL Injection Attacks by Example
A customer asked that we check out his intranet site, which was used by the company's employees and customers. This was part of a larger security review, and though we'd not actually used SQL injection to penetrate a network before, we were pretty familiar with the general concepts. We were completely successful in this engagement, and wanted to recount the steps taken as an illustration. "SQL Inj
mizdra 2017/12/09
SQL

injection

ctf
ãƒªãƒ³ã‚¯
ã‚·ãƒ³ãƒœãƒªãƒƒã‚¯å®Ÿè¡Œã«å…¥é–€ã—ã‚ˆã†ã¨ã—ãŸ | ä¸€ç”Ÿã‚ã¨ã§èªã‚“ã§ã‚
ã¯ã˜ã‚ã«ã‚·ãƒ³ãƒœãƒªãƒƒã‚¯å®Ÿè¡Œ(symbolic execution)ã¨ã„ã†ç”¨èªžã‚’ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ç³»ã®è«–æ–‡ã§ã‚ˆãè¦‹ã‹ã‘ã‚‹ã‚ˆã†ã«ãªã£ãŸï¼Žã“ã“ã§ã¯ï¼Œã‚·ãƒ³ãƒœãƒªãƒƒã‚¯å®Ÿè¡Œã®åŸºç¤Žã¨ãªã‚‹ç†è«–ã‚’è¾¿ã‚‹ï¼Žç†è€…ã¯ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ãƒ†ã‚¹ãƒˆã®ç ”ç©¶ã«ã¯ç–Žãï¼ŒãŠãã‚‰ãæœ¬ç¨¿ã«ã¯è‹¥å¹²ä»¥ä¸Šã®èª¤è¬¬ã¨èª¤è§£ãŒå«ã¾ã‚Œã¦ã„ã‚‹ã ã‚ã†ï¼Žãœã²è˜è€…ã®æ•™ç¤ºã‚’ä¹žã„ãŸã„ï¼Ž ç™ºç¥¥ã‚·ãƒ³ãƒœãƒªãƒƒã‚¯å®Ÿè¡Œã¯ä¸»ã«ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ãƒ†ã‚¹ãƒˆã®é ˜åŸŸã§å¤ãã‹ã‚‰ç ”ç©¶ã•ã‚Œã¦ããŸãƒˆãƒ”ãƒƒã‚¯ã§ã‚ã‚‹ï¼Žã‚·ãƒ³ãƒœãƒªãƒƒã‚¯å®Ÿè¡Œã¨ã„ã†ç”¨èªžã®åˆå‡ºã¯é¡ã‚‹ã“ã¨38å¹´å‰ï¼ŒJames C. Kingã‚‰ã«ã‚ˆã‚‹Symbolic Execution and Program Testing [PDF]ã¨ã„ã†è«–æ–‡ã ï¼ŽDijkstraãŒgotoæ–‡ã®æ¿«ç”¨ã«ã‚ˆã‚‹å¤§åŸŸè„±å‡ºã‚’æ‰¹åˆ¤ã—ãŸã®ãŒ1968å¹´ã§ã‚ã‚Šï¼ŒGuarded Command Languageã‚’ææ¡ˆã—ãŸã®ãŒ1975å¹´ã®ã“ã¨ã§ã‚ã‚‹ï¼Žã“ã®è«–æ–‡ãŒç™ºè¡¨ã•ã‚ŒãŸ1976å¹´å½“æ™‚ã¯ã¾ã•ã«æ§‹é€ åŒ–ãƒ—ãƒã‚°ãƒ©
mizdra 2017/10/31
ã‚·ãƒ³ãƒœãƒªãƒƒã‚¯å®Ÿè¡Œ, klee

ctf

test
ãƒªãƒ³ã‚¯
ãã‚‰ã‚‰ãƒ•ã‚©ãƒ¯ãƒ¼ãƒ‰CTF Writeup - ãƒãƒ©ãƒ³ã‚¹ã‚’å–ã‚ŠãŸã„
ç™ºç«¯ã¯ã“ã‚Œã€‚ ãã‚‰ã‚‰ãƒ•ã‚©ãƒ¯ãƒ¼ãƒ‰èªã‚“ã§ãŸã‚‰ã‚ã¡ã‚ƒã‚ã¡ã‚ƒä¸è‡ªç„¶ãªåŠåˆ†ã®QRã‚³ãƒ¼ãƒ‰å‡ºã¦ããŸã‚“ã§ã™ãŒã€CTFã‹ï¼Ÿ pic.twitter.com/FIbeTeepewâ€” æœ¬æ ¼æ‰‹æ‰“ã¡éºº (@tyage) 2017å¹´9æœˆ20æ—¥ QRã‚³ãƒ¼ãƒ‰ã¨ã„ãˆã°SECCONã§ã™ãŒã€ã“ã®ã‚¿ã‚¤ãƒ—ã®æ¬ ã‘æ–¹ã¯ä»Šã¾ã§è¦‹ãŸã“ã¨ãŒãªã‹ã£ãŸã®ã§ãƒãƒ£ãƒ¬ãƒ³ã‚¸ã—ã¦ã¿ã¾ã—ãŸã€‚ ã¡ãªã¿ã«ä»Šã¾ã§CTFã§å‡ºãŸQRã‚³ãƒ¼ãƒ‰å•é¡Œã¯ã€ ãƒ‡ãƒ¼ã‚¿éƒ¨åˆ†ãŒå®Œç’§ã«æ®‹ã£ã¦ã„ã‚‹ ã‚¨ãƒ©ãƒ¼è¨‚æ£éƒ¨åˆ†ãŒã»ã¼å®Œç’§ã«æ®‹ã£ã¦ã„ã‚‹ ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆãƒ‡ãƒ¼ã‚¿ãŒå£Šã‚Œã¦ã„ã‚‹ ã®å¤§ä½“3ç¨®é¡žã§ã™ã€‚ ä»Šå›žã®QRã‚³ãƒ¼ãƒ‰ã¯ãƒ‡ãƒ¼ã‚¿ãŒã¡ã‚‡ã£ã¨æ¬ ã‘ã¤ã¤ã‚¨ãƒ©ãƒ¼éƒ¨åˆ†ã¯ã»ã¼å…¨æ»…ã€ã«ãªã£ã¦ã„ã¾ã™ã€‚ ã¾ãšã¯ãƒ†ã‚ã‚¹ãƒˆã«æ›¸ãèµ·ã“ã•ãªã„ã¨å§‹ã¾ã‚‰ãªã„ã®ã§æ›¸ãèµ·ã“ã—ã¾ã™ã€‚ XXXXXXX X XXX X XXXXXXX X X X X X X X X XXX X X X X XXX X X XXX X XXX XX X X XXX
mizdra 2017/09/20
ctf
ãƒªãƒ³ã‚¯
8946ï½œãƒãƒƒã‚ãƒ³ã‚°ãƒãƒ£ãƒ¬ãƒ³ã‚¸ã‚µã‚¤ãƒˆ
ã‚ˆã†ã“ãã€8946ã¸ï¼ ã“ã®ã‚µã‚¤ãƒˆã§ã¯ã€ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ãƒ¼ã«é–¢é€£ã™ã‚‹å•é¡Œã‚’è§£ãã“ã¨ãŒã§ãã€ãƒãƒƒã‚ãƒ³ã‚°ã‚’é€šã—ã¦ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã‚’å¦ã¶äº‹ãŒã§ãã¾ã™ã€‚ å¤šç¨®å¤šæ§˜ãªã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ãƒ¼é–¢é€£ã®å•é¡Œã‚’ã”ç”¨æ„ã—ã¦ãŠã‚Šã¾ã™ã€‚ãŠæ¥½ã—ã¿ãã ã•ã„ï¼ ã‚¢ã‚«ã‚¦ãƒ³ãƒˆã‚’ä½œæˆã—ãªãã¦ã‚‚ã€å•é¡Œã«ãƒãƒ£ãƒ¬ãƒ³ã‚¸ã§ãã¾ã™ãŒã€ã‚¢ã‚«ã‚¦ãƒ³ãƒˆã‚’ä½œæˆã™ã‚‹ã¨ã€é€”ä¸ä¸æ–ã€ãƒ’ãƒ³ãƒˆè¡¨ç¤ºã€ãƒ©ãƒ³ã‚ãƒ³ã‚°ã«å‚åŠ ã§ãã¾ã™ã€‚ ã¾ãŸã€ãƒ¡ãƒ¼ãƒ«ã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’ç™»éŒ²ã™ã‚‹ã¨æ–°ä½œå•é¡ŒãŒå…¬é–‹ã•ã‚ŒãŸå ´åˆã‚„ã‚ãƒ£ãƒ³ãƒšãƒ¼ãƒ³ç‰ã®ãŠçŸ¥ã‚‰ã›ã‚’é€šçŸ¥ã„ãŸã—ã¾ã™ã€‚ ã‚¢ã‚«ã‚¦ãƒ³ãƒˆä½œæˆã€ãƒãƒ£ãƒ¬ãƒ³ã‚¸ã€ã‚‚ã¡ã‚ã‚“ç„¡æ–™ã§ã™ï¼è…•è©¦ã—ã«ã©ã†ãžï¼ï¼ ãƒã‚°ã‚¤ãƒ³ â€»ã‚¢ã‚«ã‚¦ãƒ³ãƒˆä½œæˆã—ãªãã¦ã‚‚å•é¡Œã«ã¯ãƒãƒ£ãƒ¬ãƒ³ã‚¸ã§ãã¾ã™ï¼ å·¦ãƒ¡ãƒ‹ãƒ¥ãƒ¼ã®Takeç•ªå·ã¯ãŠãŠãããªã‚‹ã«ã¤ã‚Œé›£æ˜“åº¦ãŒä¸ŠãŒã£ã¦ã„ãã‚ã‘ã§ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ æ£è§£çŽ‡ã®é«˜ã„é †ã«ä¸¦ã‚“ã§ãŠã‚Šã¾ã™ã€‚ ã¾ãŸã€å…¬é–‹ã—ãŸæ—¥ä»˜ã«ã‚ˆã‚ŠtakeãƒŠãƒ³ãƒãƒ¼ã‚’å‰²ã‚Šå½“ã¦ã¦ã„ã¾ã™ã®ã§ã€å…¬é–‹å¾Œã€æ—¥ãŒæµ…ã„ æ–°ç€å•é¡Œã¯æˆæžœçŽ‡ãŒä½Ž
mizdra 2017/07/12
ctf
ãƒªãƒ³ã‚¯
OpenSSLã¨Pythonã§RSAæš—å·ã®åŽŸç†ã‚’çŸ¥ã‚‹ - ã‚‚ã‚‚ã„ã‚ãƒ†ã‚¯ãƒŽãƒã‚¸ãƒ¼
OpenSSLã‚’ä½¿ã†ã¨ã€æ¬¡ã®ã‚ˆã†ã«ã—ã¦2048bitã®RSAéµãŒä½œæˆã§ãã‚‹ã€‚ $ openssl genrsa 2048 Generating RSA private key, 2048 bit long modulus ......................+++ .................+++ e is 65537 (0x10001) -----BEGIN RSA PRIVATE KEY----- MIIEowIBAAKCAQEAui/OeOYeMrLv+U2w13hQkL204OQVlB05nksKa5LaNE6mT3WY (snip) -----END RSA PRIVATE KEY----- ã“ã“ã§å‡ºåŠ›ã•ã‚Œã‚‹å†…å®¹ã¯ã€ASN.1ã¨ã„ã†æ§‹æ–‡è¦å‰‡ã§è¡¨ç¾ã•ã‚ŒãŸæƒ…å ±ã‚’DERã¨å‘¼ã°ã‚Œã‚‹ãƒã‚¤ãƒŠãƒªå½¢å¼ã«ã—ã€ãã‚Œã‚’ã•ã‚‰ã«Base64ã‚¨ãƒ³ã‚³ãƒ¼ãƒ‰ã—ãŸã‚‚ã®ã«ãªã£ã¦ã„ã‚‹ã€‚ ã“ã®ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆ
mizdra 2017/06/21
ctf

security
ãƒªãƒ³ã‚¯
katagaitai CTFå‹‰å¼·ä¼š #2 pwnablesç·¨ - PlaidCTF 2013 pwn200 ropasaurusrex / katagaitai CTF #2
katagaitai CTFå‹‰å¼·ä¼š #2ã§ç™ºè¡¨ã—ãŸè³‡æ–™ã§ã™ï¼Ž é–²è¦§è‡ªç”±ã§ã™ãŒï¼Œç¤¾ä¼šäººã®æ–¹ã¯ãªã‚‹ã¹ãWikipediaãªã©ãŠå¥½ããªã‚µãƒ¼ãƒ“ã‚¹ã‚„OSSã«ï¿¥1000ã®å¯„ä»˜ã‚’ã—ã¦ã‚ã’ã¦ä¸‹ã•ã„(â†æµè¡Œã‚‰ã›ãŸã„)ï¼Ž å†…å®¹çš„ã«ã¯ã‚¹ã‚¿ãƒƒã‚¯ç³»ã®æ”»ç•¥(ret2xxxï¼ŒROPãªã©)ã‚’å¤§ä½“ç¶²ç¾…ã—ã¤ã¤ã¾ã¨ã‚ãŸã‚‚ã®ã¨ãªã£ã¦ã„ã¾ã™â€¦
mizdra 2017/06/21
ctf
ãƒªãƒ³ã‚¯
ãƒ–ãƒ«ãƒ¼ãƒˆãƒ•ã‚©ãƒ¼ã‚¹ã«ã‚ˆã‚‹32bit ASLRå›žé¿ - ã‚‚ã‚‚ã„ã‚ãƒ†ã‚¯ãƒŽãƒã‚¸ãƒ¼
ã€Œå˜ç´”ãªã‚¹ã‚¿ãƒƒã‚¯ãƒãƒƒãƒ•ã‚¡ã‚ªãƒ¼ãƒãƒ¼ãƒ•ãƒãƒ¼æ”»æ’ƒã‚’ã‚„ã£ã¦ã¿ã‚‹ã€ã§ã¯ã€ASLRã¨SSPã€DEPãŒç„¡åŠ¹ãªçŠ¶æ…‹ã§ã®ã‚¹ã‚¿ãƒƒã‚¯ãƒãƒƒãƒ•ã‚¡ã‚ªãƒ¼ãƒãƒ¼ãƒ•ãƒãƒ¼æ”»æ’ƒã‚’è¡Œã£ãŸã€‚ ã“ã®ã†ã¡ASLRã«ã¤ã„ã¦ã¯ã€32bitç’°å¢ƒã§ã‚ã‚Œã°ãƒ–ãƒ«ãƒ¼ãƒˆãƒ•ã‚©ãƒ¼ã‚¹ã§å›žé¿ã§ãã‚‹ã“ã¨ãŒçŸ¥ã‚‰ã‚Œã¦ã„ã‚‹ã€‚ ã“ã“ã§ã¯ã€å®Ÿéš›ã«ASLRã‚’æœ‰åŠ¹ã«ã—ãŸçŠ¶æ…‹ã§ã‚·ã‚§ãƒ«ã®èµ·å‹•ã‚’è©¦ã—ã¦ã¿ã‚‹ã€‚ ç’°å¢ƒ Ubuntu 12.04 LTS 32bitç‰ˆ $ uname -a Linux vm-ubuntu32 3.11.0-15-generic #25~precise1-Ubuntu SMP Thu Jan 30 17:42:40 UTC 2014 i686 i686 i386 GNU/Linux $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu
mizdra 2017/06/21
ctf
ãƒªãƒ³ã‚¯
æ¥½ã—ã„Pwnå…¥é–€
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mizdra 2017/06/20
ctf
ãƒªãƒ³ã‚¯
SQLã‚¤ãƒ³ã‚¸ã‚§ã‚¯ã‚·ãƒ§ãƒ³ã®ã¾ã¨ã‚ - No Programming, No Life
å½“è¨˜äº‹ã¯SQLã‚¤ãƒ³ã‚¸ã‚§ã‚¯ã‚·ãƒ§ãƒ³ã®ã¾ã¨ã‚ | Think Twiceã«ç§»è»¢ã—ã¾ã—ãŸã€‚
mizdra 2017/06/07
ctf

SQL
ãƒªãƒ³ã‚¯
ksnctf
You are accessing this page via HTTP. We recommend you using HTTPS: https://ksnctf.sweetduet.info/ ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã«é–¢ã™ã‚‹å•é¡Œã‚’å‡ºé¡Œã—ã¾ã™ã€‚ å„å•é¡Œã‹ã‚‰FLAG_123456xyzã¨ã„ã†å½¢å¼ã®ç”ãˆï¼ˆflagï¼‰ã‚’æŽ¢ã—ã¦ãã ã•ã„ã€‚ Twitterã§ãƒã‚°ã‚¤ãƒ³ã™ã‚‹ã¨ã€ãƒ©ãƒ³ã‚ãƒ³ã‚°ã«å‚åŠ ã§ãã¾ã™ã€‚ ctfq.u1tramarine.blue ä»¥å¤–ã¸ã®æ”»æ’ƒã¯ã—ãªã„ã§ãã ã•ã„ã€‚ Attacks are only allowed to ctfq.u1tramarine.blue. Tweet
mizdra 2017/02/18
ctf
ãƒªãƒ³ã‚¯
CTFé–‹å‚¬ã—ãŸã„ï¼å¦ç”Ÿ3äººã§æ”¯ãˆãŸã€ŒMMA CTF 1st 2015ã€ã®è£å´ (2/2)
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mizdra 2016/07/11
CTF
ãƒªãƒ³ã‚¯
1