初心者向けハニーポット WOWHoneypot の紹介

by Kazuaki Morihisa

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2017೥11݄25೔ ୈ2ճϋχʔϙολʔٕज़ަྲྀձൃදࢿྉ ॳ৺ऀ޲͚ϋχʔϙοτ WOWHoneypot ͷ঺հ @morihi_soc

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XIPBNJ w ৿ٱ࿨ত !NPSJIJ@TPD w ຊۀ͸ηΩϡϦςΟΤϯδχΞɾΞφϦετ w झຯͰϋχʔϙοτͷӡ༻Λ͢Δϋχʔϙολʔ w ϒϩάˠIUUQXXXNPSJIJTPDOFU w ϋχʔϙολʔٕज़ަྲྀձओ࠵ऀ w άϧʔϓˠIUUQTIBOJQPUFDIDPOOQBTTDPN ˡϒϩάͷʮϋχʔϙοτ؍࡯ه࿥ʯ͕ ຊʹͳΓ·ͨ͠ ೥݄೔ൃച ిࢠॻ੶൛ແྉࢼಡ൛͋Γ·͢ ʮαΠόʔ߈ܸͷ଍੻Λ෼ੳ͢Δ ϋχʔϙοτ؍࡯ه࿥ʯ ஶऀɿ৿ٱ࿨ত ग़൛ɿल࿨γεςϜ ࠓ·Ͱʹ͓ੈ࿩ʹͳͬͨΠϕϯτ ɾ*5,FZT ݱ4FD$BQ ɾωοτϫʔΫύέοτΛಡΉձ Ծ ɾ/*4$αΠόʔϋϩ΢Οϯ ɾ*OUFSOFU8FFL ɾ)BSEFOJOH 7BMVF$IBJO༏উ ɾTTNKQ ɾ"*4FD ɾULULηΩϡϦςΟษڧձ

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͓඼ॻ͖ w ϋχʔϙοτͷָ͠Έํ΍೰Έ w ϋχʔϙοτ࡞ͬͯΈͨΑ w 808)POFZQPUͷಛ௃ w ߏஙσϞ w σΟϨΫτϦߏ଄঺հ w ϚονϨεϙϯεϧʔϧղઆ w Ԡ༻ฤd&-,ͰՄࢹԽd w ૝ఆ'"2 3

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ϋχʔϙοτͷָ͠Έํ 4 ϋχʔϙοτ(Honeypot)ͱ͸ɺ͋͑ͯ߈ܸΛड ͚Δ͜ͱΛલఏͱͨ͠γεςϜͰ͢ɻ ͦͷͨΊϋχʔϙοτ͕ه࿥͢ΔϩάΛ؍࡯͢ Δ͜ͱͰɺੜͷ߈ܸ৘ใΛऩू͢Δ͜ͱ͕Ͱ͖ ·͢ɻ ͦͯ͠ϩά͔Β߈ܸऀͷૂ͍Λͭ·ͼΒ͔ʹ͢ Δ͜ͱ͕ɺϋχʔϙοτͷ୉ޣຯͰ͢ɻ

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໨ඪ࠶֬ೝ w ͳͥϋχʔϙοτΛӡ༻͢ΔΜ͚ͩͬ 5 →ϋχʔϙοτ͸໨తʹ߹Θͤͯߏங͠ɺӡ༻͢΂͖ɻ w ࣮ࡍʹੜͷ߈ܸΛݟͯΈ͍ͨ w ߈ܸݩ*1ΞυϨεΛऩू͍ͨ͠ w ߈ܸͷྲྀߦΛௐ΂͍ͨ w Ͳ͜ͷࠃ͔Β߈ܸ͕ଟ͍ͷ͔ௐ΂͍ͨ w ຊ൪γεςϜͷݎ࿚Խʹ࢖͍͍ͨ w Ϛϧ΢ΣΞͷऩूʹ࢖͍͍ͨ

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ॳ৺ऀϋχʔϙολʔͷ೰Έ ϋχʔϙοτߏஙͰ٧·Δ ϩά෼ੳͰࠔΔ 6 ๭αΠτͷྲྀೖݕࡧΫΤϦ ߏஙʹ೰Ήϋχʔϙολʔ͸ׂΓͱଟ͍໛༷ɻ ܦݧ্ɺιʔείʔυ͔ΒΠϯετʔϧ͢Δͱ͖ʹ ϥΠϒϥϦͷґଘؔ܎Ͱ٧·ͬͨ͜ͱଟ਺ɻ ೔ຊޠͷ৘ใ͕͋·Γͳ͍͜ͱ΋ɻ ηΩϡϦςΟձࣾͷϨϙʔτ΍ϒϩάɺॻ੶ɺ ߈ܸίʔυͷιʔεϦʔσΟϯάͳͲͰ஍ಓʹ ϨϕϧΞοϓ͍͔ͯ͘͠͠ͳ͍ɻ վળ

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ϋχʔϙοτ࡞ͬͯΈͨΑ 8FMDPNFUP 0NPUFOBTIJ 8FC )POFZQPU 7 WOWHoneypot ※͚΋ϑϨͷ OP Λฉ͍͍ͯͳ͔ͬͨΒࢥ͍͔ͭͳ͔ͬͨͱࢥ͏ɻ GitHub: https://github.com/morihisa/WOWHoneypot.git

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808)POFZQPUͷ֓ཁͱಛ௃ w ֓ཁ w ؆୯ʹߏஙՄೳͰɺγϯϓϧͳػೳͰಈ࡞Λ೺Ѳ͠΍͘͢ ͨ͠ɺαʔόଆ௿ର࿩ܕͷೖ໳༻8FCϋχʔϙοτɻ w ϧʔϧϕʔεͷϚονϨεϙϯεػೳʹΑΓɺ  ߈ܸऀʹؾ࣋ͪΑ͘߈ܸͯ͠΋Β͍ɺಘΒΕΔ  ϩάͷ෯Λ޿͛Δ͜ͱ͕Ͱ͖Δɻ w ಛ௃ ߏங͕؆୯ )551ϦΫΤετΛ·Δͬͱอଘ σϑΥϧτ0, ϚονϨεϙϯε 8 ͓΋ͯͳ͠ཁૉ

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ಈ࡞֓ཁ 9 ߈ܸऀ WOWHoneypot αʔό 80/tcp 8080/tcp ΞΫηε αʔόͷϑΝΠΞ΢ΥʔϧͰ ϙʔτసૹ Ϛον&ϨεϙϯεͰ Ԡ౴಺༰Λܾఆ Ϩεϙϯε WOWHoneypot ͸ 8080 ϙʔτͷΑ͏ͳϋΠϙʔτ͔ͭɺ ҰൠϢʔβݖݶͰ࣮ߦ͢Δ͜ͱΛਪ঑͠·͢ɻ

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ಛ௃ɿߏங͕؆୯ w ඞཁͳ΋ͷ w 1ZUIPO 1ZUIPOͰ͸ಈ࡞͠·ͤΜ   w ߏஙखॱ ؆қ൛ w ϑΝΠΞ΢ΥʔϧͰϙʔτసૹઃఆ લ४උ w (JU)VC͔ΒιʔείʔυΛμ΢ϯϩʔυ w ϓϩάϥϜ࣮ߦ 10 ಈ࡞ςετࡁΈ؀ڥ  NBD04)JHI4JFSSB1ZUIPO  6CVOUV4FSWFSCJU1ZUIPO  8JOEPXT411ZUIPO

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ಛ௃ɿ)551ϦΫΤετΛ·Δͬͱอଘ w )551ϦΫΤετΛड͚෇͚Δ͝ͱʹɺ  ࢦఆͨ͠ϩάϑΝΠϧʹ௥هͯ͠อଘ͠·͢ɻ w ϑΥʔϚοτɿ  <೔෇>  ΞΫηεݩ*1ΞυϨε  ϔομͷ)PTU໊ϙʔτ൪߸  lϦΫΤετϝιου63*όʔδϣϯz  εςʔλείʔυ  ϚονϨεϙϯεͷ݁Ռ 'BMTFPSNSSJE   ϦΫΤετશମΛ#"4&ͰΤϯίʔυͨ͠΋ͷ 11

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ಛ௃ɿσϑΥϧτ0, w ϦΫΤετ͕͖ͨΒɺͱΓ͋͑ͣ0,Λฦ͢ w ߈ܸऀ͕࢖͏πʔϧʹΑͬͯ͸ɺ߈ܸର৅͕ଘࡏ  ͠ͳ͚Ε͹߈ܸ͠ͳ͍͜ͱ͕͋Δɻ 12 ओͳ HTTP εςʔλείʔυͷ͓͞Β͍ ࢀߟɿhttps://developer.mozilla.org/ja/docs/Web/HTTP/Status εςʔλείʔυ ҙຯ 0, ϦΫΤετ͕੒ޭͨ͜͠ͱΛࣔ͢ɻ $SFBUFE ϑΝΠϧ͕࡞੒Ͱ͖ͨ͜ͱΛࣔ͢ɻ165ϦΫΤετɻ 6OBVUIPSJ[FE ೝূ͕ඞཁͳϖʔδ΁ͷΞΫηεΛࣔ͢ɻ 'PSCJEEFO ΞΫηεݖ͕ͳ͘ɺӾཡͰ͖ͳ͔ͬͨ͜ͱΛࣔ͢ɻ /PU'PVOE ΞΫηεͨ͠ϑΝΠϧ͕ଘࡏ͠ͳ͔ͬͨ͜ͱΛࣔ͢ɻ .FUIPE/PU"MMPXFE ࢦఆͨ͠ϝιου͕ڐՄ͞Εͳ͔ͬͨ͜ͱΛࣔ͢ɻ *OUFSOBM4FSWFS&SSPS αʔόଆͰΤϥʔ͕ൃੜͨ͜͠ͱΛࣔ͢ɻ /PU*NQMFNFOUFE ࢦఆͨ͠ϝιου͕αϙʔτ͞Ε͍ͯͳ͍͜ͱΛࣔ͢ɻ

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Ұൠతͳϋχʔϙοτ 13 ߈ܸऀ ϋχʔϙοτ ᶃअຐ͢ΔͰʙ GET /hoge.php HTTP/1.1 ᶄअຐ͢ΔͳΒؼͬͯʙ 404 Not Found ᶅ΄ͳɺ·ͨɾɾɾ connection close ☓

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808)POFZQPU 14 ߈ܸऀ ϋχʔϙοτ ᶃअຐ͢ΔͰʙ GET /hoge.php HTTP/1.1 ᶄΑ͏ͦ͜! 200 OK ᶅϑΝΠϧ͋Δ΍Μ͚ɻΑͬ͠Ό߈ܸͨ͠Ζ! GET /hoge.php?q=../../etc/passwd HTTP/1.1 ̋

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ಛ௃ɿϚονϨεϙϯε w 808)POFZQPU࠷େͷಛ௃ w ߈ܸऀΛ͓΋ͯͳ͢͠ΔͨΊͷ޻෉ w ୺తʹ·ͱΊΔͱʮϦΫΤετʹࣄલʹఆٛͨ͠  จࣈྻؚ͕·Ε͍ͯͨΒɺಛผͳ಺༰ΛԠ౴͢Δʯ w ͍ΘΏΔϧʔϧϕʔεͷγάωνϟΛ࡞͓͖ͬͯɺ  ߈ܸ಺༰ʹ߹ΘͤͯϨεϙϯεʹࡉ޻͢Δɻ 15

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ͪΐͬͱݡ͍߈ܸπʔϧ 16 ߈ܸऀ ϋχʔϙοτ ᶃअຐ͢ΔͰʙ GET /wordpress/wp-login.php HTTP/1.1 ᶅࢥͬͯͨϑΝΠϧͱҧ͏ɾɾɾ connection close ☓ ᶄΑ͏ͦ͜! 200 OK ͜Ε͸ WordPress Ͱ͸ͳͦ͞͏ͩͳ ※ݡ͍߈ܸπʔϧͷ୅ද࡞ͱ͍͑͹ Metasploit ͩΑͶ

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ͪΐͬͱݡ͍߈ܸπʔϧରࡦ 17 ߈ܸऀ ϋχʔϙοτ ᶃअຐ͢ΔͰʙ GET /wordpress/wp-login.php HTTP/1.1 ᶅϩάΠϯϒϧʔτ߈ܸ΍ POST /wordpress/wp-login.php HTTP/1.1 ˕ ᶄWordPress ͷϖʔδͰ͢ɻͲ͏ͧ! 200 OK ͓ͬ WordPress ಈ͍͍ͯΔ΍Μ wp-login.php ͔ͩΒ WordPress Λ૷͓͏

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ߏஙखॱ w ͬ͘͟Γͨ͠खॱ 6CVOUVTFSWFSCJU 18 $ sudo ufw default DENY $ sudo ufw allow 80/tcp $ sudo ufw allow 8080/tcp ※ SSH ͷΞΫηεϙʔτ΋؀ڥʹ߹Θͤͯ௥Ճ͍ͯͩ͘͠͞ɻ $ sudo ufw enable $ sudo vi /etc/ufw/before.rules ※ ʮ*ﬁlterʯΑΓલʹԼهͷ4ߦΛ௥ه͢Δɻ ——————————————————————————— *nat :PREROUTING ACCEPT [0:0] -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080 COMMIT ——————————————————————————— $ sudo ufw reload $ cd ~/ $ git clone https://github.com/morihisa/WOWHoneypot.git wowhoneypot $ cd wowhoneypot $ python3 ./wowhoneypot.py

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ߏஙσϞ w ϥΠϒϋχʔϙοτߏங w ϑΝΠΞ΢Υʔϧ͸ઃఆࡁΈͷ714ʹ  808)POFZQPUΛߏங͠·͢ɻ 19

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ͪΐͬͱٳܜ w ϩάʹ࢒Δ#"4&Λσίʔυ͍ͨ͠ͱ͖ʹ͸ʜ 20 ղઆɿϩά෼ੳͷ஫ҙ఺ͱจࣈྻૢ࡞εΫϦϓτެ։  http://www.morihi-soc.net/?p=741 w TUSTDSJQUϒϥ΢βͰ׬݁จࣈྻૢ࡞εΫϦϓτ w IUUQTHJUIVCDPNNPSJIJTBTUSTDSJQU

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σΟϨΫτϦߏ଄ͱϑΝΠϧղઆ w XPXIPOFZQPUQZ w 808)POFZQPUຊମͰ͢ɻ1ZUIPOͰ࡞ΒΕ͍ͯ ·͢ɻҰൠϢʔβݖݶͰಈ࡞͠·͢ɻ  w NSS@DIFDLFSQZ w NSSVMFTͷνΣοΧʔϞδϡʔϧͰ͢ɻຊମ͔Βࢀর ͞Ε͍ͯ·͕͢ɺ୯ମͰ΋ಈ࡞ՄೳͰ͢ɻ  w DPOpHUYU w ઃఆϑΝΠϧͰ͢ɻϙʔτ൪߸ͱ͔ύεɺTZTMPH αʔό৘ใͳͲΛॻ͖·͢ɻ 21

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σΟϨΫτϦߏ଄ͱϑΝΠϧղઆ w BSUσΟϨΫτϦɿNSSؔ࿈ϑΝΠϧஔ͖৔Ͱ͢ɻ 22 NSS@IFMQUYU ϚονϨεϙϯεϑΝΠϧͷϔϧϓϑΝΠϧ ೔ຊޠ NSSVMFTYNM ϚονϨεϙϯεͷ9.-ϑΝΠϧɻNPSJIJ@TPDެࣜ΍ ෳ਺ͷϋχʔϙοτʹڞ௨͢Δϧʔϧ γάωνϟ Λॻ͘ɻ NSSVMFT@MPDBMYNM ϚονϨεϙϯεͷ9.-ϑΝΠϧɻϋχʔϙοτݻ༗ͷ ϧʔϧ γάωνϟ Λॻ͘ɻ BSUEFGBVMU 808)POFZQPUʹΞΫηε͕͋ΓɺϚονϨεϙϯεͷ ϧʔϧʹҰக͠ͳ͍৔߹ͷσϑΥϧτίϯςϯπͷஔ͖ ৔ɻ໊લ͕IUNMͰऴΘΔϑΝΠϧΛಡΈࠐΈ·͢ɻ art σΟϨΫτϦ໊ͷ༝དྷ lγάωνϟ͸ɺηΩϡϦςΟΤϯδχΞͷܳज़දݱͷͭͰ͋ΔzCZ!NPSJIJ@TPD

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σΟϨΫτϦߏ଄ͱϑΝΠϧղઆ w MPHσΟϨΫτϦɿϩάϑΝΠϧஔ͖৔ 23 BDDFTT@MPH ΞΫηεϩάΛه࿥͢ΔϑΝΠϧɻ XPXIPOFZQPUMPH 808)POFZQPUͷಈ࡞ϩάΛه࿥͢ΔϑΝΠϧɻ

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ϚονϨεϙϯεղઆ w .BUDI3FTQPOTF3VMF NSS w XPXIPOFZQPUͷओػೳͷͭ w 9.-ܗࣜͷϑΝΠϧ w ϝλ w ϧʔϧͷ*%΍આ໌จͳͲ w τϦΨʔ w ϦΫΤετ಺༰ͱϚονϯάͤ͞Δจࣈྻ w Ϩεϙϯε w τϦΨʔʹҰகͨ͠ϦΫΤετ΁ͷԠ౴಺༰ 24

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NSSαϯϓϧ w 165ϝιουͷϦΫΤετʹରԠͨ͠ϧʔϧྫ 25

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ϚονϨεϙϯεղઆ w ϧʔϧϑΝΠϧ͸छྨ w NSSVMFTYNM w NPSJIJTPDެࣜϧʔϧ΍ɺෳ਺ͷϋχʔϙοτͰ  ڞ௨ͷϧʔϧΛ௥Ճ͢ΔϑΝΠϧ w NSSVMFT@MPDBMYNM w ϋχʔϙοτݸผͷϧʔϧ w ଞͷϋχʔϙοτͱࠩผԽ͍ͨ͠ϧʔϧΛ௥Ճ  ͢ΔϑΝΠϧ 26

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ϚονϨεϙϯεղઆ w NSSJE w ͭͷϧʔϧʹ͸ඞͣͭͷ*%ΛׂΓ౰ͯΔɻ w ॏෳෆՄ w *%ͷେ͖ͳ΋ͷ͔Βॱ൪ʹϚονϯάॲཧ͕૸Δɻ w ࢖༻ྖҬͷ؆୯ͳ෼ྨ w Ҏ্ɺҎԼͷൣғͷ੔਺஋Λࢦఆ w NPSJIJTPDެࣜϧʔϧͰ࢖༻ w ࣗ༝  ϩʔΧϧϧʔϧͰ࢖༻͢Δ͜ͱΛਪ঑ w ࣗ༝ 27

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ϚονϨεϙϯεղઆ w ϧʔϧ࡞੒σϞ w ͜ͷϦϞʔτΤΫεϓϩΠτͷϧʔϧΛ࡞Γ·͢ w /FUHFBS%(/4FUVQDHJ 6OBVUIFOUJDBUFE3FNPUF$PEF&YFDVUJPO .FUBTQMPJU w IUUQTXXXFYQMPJUECDPNFYQMPJUT w .FUBTQMPJU NTGDPOTPMF ͔Βݺͼग़͢ w FYQMPJUMJOVYIUUQOFUHFBS@EHO@TFUVQ@VOBVUI@FYFD 28

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ͨͿΜ͜͏͍͏ϧʔϧʹͳΔ NSS NFUB NSSJENSSJE FOBCMF5SVFFOBCMF OPUF%(/TFUVQDHJFYQMPJUOPUF NFUB USJHHFS VSJTFUVQDHJVSJ USJHHFS SFTQPOTF TUBUVTTUBUVT IFBEFS OBNF888"VUIFOUJDBUFOBNF WBMVF%(/WBMVF IFBEFS CPEZPLCPEZ SFTQPOTF NSS 29 τϦΨʔ͸ɺURI ʹʮ/setup.cgiʯ ͕ೖ͍ͬͯΔ͜ͱ Ϩεϙϯε͸ɺϔομʹ WWW-Authenticate: DGN1000 ΛೖΕͯԠ౴͢Δɻ

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.FUBTQMPJUͰFYQMPJUͨ͠ͱ͖ͷྫ 30 ઐ༻ϧʔϧΛ࡞Δલ͸ exploit ʹࣦഊ͍ͯ͠Δ ઐ༻ϧʔϧΛ࡞ͬͨޙ͸ exploit ʹ੒ޭ͍ͯ͠Δ (Α͏ʹݟ͑Δ)

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Ԡ༻ฤd-PHTUBTI&-,ͰՄࢹԽd w 808)POFZQPUΛ෼ࢄͯ͠২͑ͯɺऩूͨ͠ϩά ΛՄࢹԽͯ͠Έͨɻ w ؆୯ͳߏ੒ਤ 31 Πϯλʔωοτͷ͋ͪͪ͜ʹ ϋχʔϙοτΛ২͑Δ ϩάऩूαʔό syslog(tcp)Ͱϩάૹ৴ Elasticsearch& Kibana αʔό Logstash Ͱ ϩάసૹ ELK: Elasticsearch ͱ Kibana ͷ૊Έ߹Θͤͷ͜ͱ Logstash: ྑ͍ײ͡ʹϩάΛऩूͨ͠Γసૹͨ͠ΓͰ͖Δੌ͍΍ͭ

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,JCBOBͷՄࢹԽྫ w ΞΫηεݩ*1ΞυϨεͷ(&0Ϛοϐϯά 32 ※೔ຊ͔ΒͷΞΫηε͕ଟ͍ͷ͸ࢮ׆؂ࢹͷϦΫΤετ΋ؚΉͨΊɻ

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,JCBOBͷՄࢹԽྫ w ΞΫηεݩ*1ͷࠃίʔυ λάΫϥ΢υ 33 ※೔ຊΛআ͘ɻ

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,JCBOBͷՄࢹԽྫ w ϦΫΤετ಺༰ͷ౷ܭ΍؆қతͳ෼ੳ 34

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,JCBOBͷՄࢹԽྫ w ࣌ؒຖͷݕ஌݅਺ 35

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૝ఆ'"2 w 2 ؆୯ʹ࢖͑·͔͢ w " ߏங͸؆୯Ͱ͢ɻ1ZUIPO͕Πϯετʔϧ͞Ε͍ͯΔ͜ͱ͕ඞਢཁ ݅ͰɺଞͷϥΠϒϥϦʹґଘ͠·ͤΜɻ  w 2 ୭Ͱ΋࢖͑·͔͢ ੍໿͸͋Γ·͔͢ w " ͲͳͨͰ΋͓࢖͍͍͚ͨͩ·͢ɻ#4%-JDFOTF DMBVTF#4% -JDFOTF ͱͯ͠ެ։͍ͯ͠·͢ɻ  w 2 Ͳ͜Ͱެ։͍ͯ͠·͔͢ w " (JU)VCͰ͢ˠIUUQTHJUIVCDPNNPSJIJTB808)POFZQPU  w 2 ແྉͰ͔͢ αϙʔτ͸͋Γ·͔͢ w " ແྉͰ͢ɻझຯͰ࡞ͬͨ΋ͷͳͷͰɺαϙʔτ͸͋Γ·ͤΜɻ 36

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૝ఆ'"2 w 2 ͲͷΑ͏ͳϩά͕࢒Γ·͔͢ w " 808)POFZQPUࣗ਎ͷಈ࡞ϩά͓ΑͼɺΞΫηεϩά͕࢒ Γ·͢ɻ  w 2 Ϛϧ΢ΣΞͷऩू͸Ͱ͖·͔͢ αʔόʹ࢒Γ·͔͢ w " ೳಈతͳऩू͸͠·ͤΜɻҰൠతͳ8FCαʔόͱಉ༷ʹɺ ΞΫηεͷࣄ࣮ͷΈ͕ϩάͱͯ͠࢒Γ·͢ɻ    ͨͩ͠ɺΞΫηεϩάΛݩʹϩά෼ੳΛ͢ΔաఔͰɺαʔό΍ ௐࠪ୺຤͕৵֐Λड͚ΔՄೳੑ͕͋Γ·͢ɻϩά෼ੳऀͷ੹೚ ͷݩɺे෼஫ҙͯ͠औΓѻ͍ͬͯͩ͘͞ɻ  ͳΜΒ͔ͷඃ֐͕ൃੜͨ͠ͱͯ͠΋ɺ੹೚͸ෛ͍͔Ͷ·͢ɻ 37

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)BQQZ)POFZQPU 39 ←ϜγτϦεϛϨ(৯஬২෺) 2017೥10݄27೔ ເͷౡ ೤ଳ২෺ؗͰࡱӨ ͓͠·͍