CTF 17 crypto 100

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問題文
ASI JL DUJZTED SA J EJZD JVV NBTODI, VDD FOD AHB VBFD:

OFFT://YYY.AHB.MSK/TJMD2/CDN08/NSCD_122908.OFZE, PSQD GSW
MWDVV? LS, JNFWJE AHB RWBX.

問題文、ここまで

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A B C D E F G H I J K L M
L T
N O P Q R S T U V W X Y Z
H P W M
--------------------------------------------------- ASI JL DUJmplD SA J lJmD JVV NBphDI, VDD thD AHB VBtD: ■■■ ■■ ■■■mpl■ ■■ ■ l■m■ ■■■ ■■ph■■,■■■ th■ ■■■ ■■t■ http://www.AHB.MSK/pJMD2/CDN08/NSCD_122908.html, PSQD GSW MWDVV? LS, JNtWJl AHB RWBX. http://www.■■■.■■■/p■■■2/■■■08/■■■■_122908.html ■■■■ ■■■ ■■■■■? ■■,■■t■■l ■■■ ■■■■. http://www.AHB.MSK →MSKは三文字 →com  → mはZなのでなし →net → tはFなのでなし →cat → tはFなのでなし →pro  →pはTなのでなし →tel  →tはFなのでなし  →lはEなのでなし →int  →tはFなのでなし →mil  →lはEなのでなし →org →biz →gov →edu M c,n,p,t,mはない S o,e,a,r,n,iはない K m,t,o,lはない FOD → th■ Dを「e」と仮定すると「the」 ASI JL eUJmple SA J lJme JVV NBpheI, Vee the AHB VBte: ■■■ ■■ e■■mple ■■ ■ l■me ■■■ ■■phe■,■ee the ■■■ ■■te: http://www.AHB.MSK/pJMe2/CeN08/NSCe_122908.html, PSQe GSW MWeVV? LS, JNtWJl AHB RWBX. http://www.■■■.■■■/p■■e2/■e■08/■■■e_122908.html ■■■e ■■■ ■■e■■? ■■,■■t■■■ ■■■ ■■■■. e■■mple → example 仮定2 U →x J →a ASI JL eUJmple SA J lJme JVV NBpheI, Vee the AHB VBte: ■■■ a■ example ■■ a lame a■■ ■■phe■,■ee the ■■■ ■■te: http://www.■■■.■■■/pa■e2/■e■08/■■■e_122908.html ■■■e ■■■ ■■e■■? ■■,a■t■al ■■■ ■■■■. JL → a■ at→既出 an am→既出 as au→ないな av→ないな 仮定 3 lame a■■ → lame ass くそやろう か? V → s だと L → n になる ASI JL eUJmple SA J lJme JVV NBpheI, Vee the AHB VBte: ■■■ an example ■■ a lame ass ■■phe■,see the ■■■ s■te: http://www.AHB.MSK/pJMe2/CeN08/NSCe_122908.html, PSQe GSW MWeVV? LS, JNtWJl AHB RWBX. http://www.■■■.■■■/pa■e2/■e■08/■■■e_122908.html ■■■e ■■■ ■■ess? n■,a■t■al ■■■ ■■■■. ---------------------------------------------------
A B C D E F G H I J K L M
e l t a n
N O P Q R S T U V W X Y Z
h p s w m
--------------------------------------------------- 仮定 4 下にURLがあるから VBte: → s■te: → site: とすると ASI JL eUJmple SA J lJme JVV NBpheI, Vee the AHB VBte: ■■■ an example ■■ a lame ass ■iphe■,see the ■■i site: http://www.AHB.MSK/pJMe2/CeN08/NSCe_122908.html, PSQe GSW MWeVV? LS, JNtWJl AHB RWBX. http://www.■■i.■■■/pa■e2/■e■08/■■■e_122908.html ■■■e ■■■ ■■ess? n■,a■t■al ■■i ■■i■. http://www.AHB.MSK →MSKは三文字 →com  → mはZなのでなし →net → tはFなのでなし →cat → tはFなのでなし →pro  →pはTなのでなし →tel  →tはFなのでなし  →lはEなのでなし →int  →tはFなのでなし →mil  →lはEなのでなし →biz →iはBなのでなし →org →gov →edu ・org  example r■ ・gov  example o■ ・edu  example d■ 仮定 5 MSK → gov DUJZTED SA → example of ---------------------------------------------------
A B C D E F G H I J K L M
f i e l t a v n g
N O P Q R S T U V W X Y Z
h o p s w m
--------------------------------------------------- ASI JL eUJmple SA J lJme JVV NBpheI, Vee the AHB VBte: fo■ an example of a lame ass ■iphe■,see the f■i site: http://www.AHB.MSK/pJMe2/CeN08/NSCe_122908.html, PSQe GSW MWeVV? LS, JNtWJl AHB RWBX. http://www.f■i.gov/page2/■e■08/■o■e_122908.html ■o■e ■o■ g■ess? no,a■t■al f■i ■■i■. 仮定 6 ASI → fo■ → for ---------------------------------------------------
A B C D E F G H I J K L M
f i e l t r a v n g
N O P Q R S T U V W X Y Z
h o p s w m
--------------------------------------------------- ASI JL eUJmple SA J lJme JVV NBpheI, Vee the AHB VBte: for an example of a lame ass ■ipher,see the f■i site: http://www.AHB.MSK/pJMe2/CeN08/NSCe_122908.html, PSQe GSW MWeVV? LS, JNtWJl AHB RWBX. http://www.f■i.gov/page2/■e■08/■o■e_122908.html ■o■e ■o■ g■ess? no,a■t■al f■i ■■i■. 仮定 7 NBTODI → ■ipher → cipher ---------------------------------------------------
A B C D E F G H I J K L M
f i e l t r a v n g
N O P Q R S T U V W X Y Z
c h o p s w m
--------------------------------------------------- ASI JL eUJmple SA J lJme JVV NBpheI, Vee the AHB VBte: for an example of a lame ass cipher,see the f■i site: http://www.AHB.MSK/pJMe2/CeN08/NSCe_122908.html, PSQe GSW MWeVV? LS, JNtWJl AHB RWBX. http://www.f■i.gov/page2/■e■08/■o■e_122908.html ■o■e ■o■ g■ess? no,act■al f■i ■■i■. 仮定 8 JNFWJE → act■al → actual ---------------------------------------------------
A B C D E F G H I J K L M
f i e l t r a v n g
N O P Q R S T U V W X Y Z
c h o p s u w m
--------------------------------------------------- ASI JL eUJmple SA J lJme JVV NBpheI, Vee the AHB VBte: for an example of a lame ass cipher,see the f■i site: http://www.AHB.MSK/pJMe2/CeN08/NSCe_122908.html, PSQe GSW MWeVV? LS, JNtWJl AHB RWBX. http://www.f■i.gov/page2/■ec08/co■e_122908.html ■o■e ■ou guess? no,actual f■i ■ui■. 仮定 9 122908.html ■ec08  → 20081229 ?  → Dec 08 ? ---------------------------------------------------
A B C D E F G H I J K L M
f i d e l t r a v n g
N O P Q R S T U V W X Y Z
c h o p s u w m
--------------------------------------------------- ASI JL eUJmple SA J lJme JVV NBpheI, Vee the AHB VBte: for an example of a lame ass cipher,see the f■i site: http://www.AHB.MSK/pJMe2/CeN08/NSCe_122908.html, PSQe GSW MWeVV? LS, JNtWJl AHB RWBX. http://www.f■i.gov/page2/dec08/code_122908.html ■o■e ■ou guess? no,actual f■i ■ui■. 仮定 10 ■ou guess? → you guess? ---------------------------------------------------
A B C D E F G H I J K L M
f i d e l t y r a v n g
N O P Q R S T U V W X Y Z
c h o p s u w m
--------------------------------------------------- ASI JL eUJmple SA J lJme JVV NBpheI, Vee the AHB VBte: for an example of a lame ass cipher,see the f■i site: http://www.AHB.MSK/pJMe2/CeN08/NSCe_122908.html, PSQe GSW MWeVV? LS, JNtWJl AHB RWBX. http://www.f■i.gov/page2/dec08/code_122908.html ■o■e you guess? no,actual f■i ■ui■. 残りは b,j,k,q,x,z 仮定 11 H → b FBI 残り4つで当てはめる ---------------------------------------------------
A B C D E F G H I J K L M
f i d e l t y b r a v n g
N O P Q R S T U V W X Y Z
c h j k q o p x s u z w m
--------------------------------------------------- ASI JL eUJmple SA J lJme JVV NBpheI, Vee the AHB VBte: for an example of a lame ass cipher,see the fbi site: http://www.AHB.MSK/pJMe2/CeN08/NSCe_122908.html, PSQe GSW MWeVV? LS, JNtWJl AHB RWBX. http://www.fbi.gov/page2/dec08/code_122908.html, joke you guess? no,actual fbi quiz. http://www.fbi.gov/coded.htm
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