第一步:看题
题目描述:没有规则的乱文,该怎么进行分析呢?
第二步:获取flag
打开附件,看到一堆AB,一开始想是二进制,尝试解密,发现不对。后来想到应该是个摩斯密码,把A换成- B改成.最后放在CyberChef中进行解密
我们得到了
BKJOGDTKFOEJ PV GEX OKFBGPBX FSM VGRMJ DI GXBESPZRXV IDK VXBRKX BDHHRSPBFGPDS PS GEX OKXVXSBX DI FMCXKVFKPFW QXEFCPDK, NEPBE PV MPCPMXM PSGD BWFVVPBFW BKJOGDTKFOEJ FSM HDMXKS BKJOGDTKFOEJ. GEX HFPS BWFVVPBFW BPOEXK GJOXV FKX GKFSVODVPGPDS BPOEXKV, NEPBE KXFKKFSTX GEX DKMXK DI WXGGXKV PS F HXVVFTX. FS XFKWJ VRQVGPGRGPDS BPOEXK NFV GEX BFXVFK BPOEXK, PS NEPBE XFBE WXGGXK PS GEX OWFPSGXYG NFV KXOWFBXM QJ F WXGGXK VDHX IPYXM SRHQXK DI ODVPGPDSV IRKGEXK MDNS GEX FWOEFQXG. VPSBX GEX MXCXWDOHXSG DI KDGDK BPOEXK HFBEPSXV PS NDKWM NFK P FSM GEX FMCXSG DI BDHORGXKV PS NDKWM NFK PP, BKJOGDTKFOEJ HXGEDMV EFCX QXBDHX PSBKXFVPSTWJ BDHOWXY FSM PGV FOOWPBFGPDSV HDKX CFKPXM. HDMXKS BKJOGDTKFOEJ PV EXFCPWJ QFVXM DS HFGEXHFGPBFW GEXDKJ FSM BDHORGXK VBPXSBX OKFBGPBX; BKJOGDTKFOEPB FWTDKPGEHV FKX MXVPTSXM FKDRSM BDHORGFGPDSFW EFKMSXVV FVVRHOGPDSV. GEX TKDNGE DI BKJOGDTKFOEPB GXBESDWDTJ EFV KFPVXM F SRHQXK DI WXTFW PVVRXV PS GEX PSIDKHFGPDS FTX. BKJOGDTKFOEJ'V ODGXSGPFW IDK RVX FV F GDDW IDK XVOPDSFTX FSM VXMPGPDS EFV WXM HFSJ TDCXKSHXSGV GD BWFVVPIJ PG FV F NXFODS FSM GD WPHPG DK XCXS OKDEPQPG PGV RVX FSM XYODKG. PS VDHX ARKPVMPBGPDSV NEXKX GEX RVX DI BKJOGDTKFOEJ PV WXTFW, WFNV OXKHPG PSCXVGPTFGDKV GD BDHOXW GEX MPVBWDVRKX DI XSBKJOGPDS LXJV IDK MDBRHXSGV KXWXCFSG GD FS PSCXVGPTFGPDS. BKJOGDTKFOEJ FWVD OWFJV F HFADK KDWX PS MPTPGFW KPTEGV HFSFTXHXSG FSM BDOJKPTEG PSIKPSTXHXSG MPVORGXV PS KXTFKM GD MPTPGFW HXMPF.GEX IWFT PV 1M817I23-4X20-9405-QI6M-X83M055316M6, OWXFVX FMM IWFT VGKPST FSM QKFBXV JDRKVXWI, FSM FWW WXGGXKV FKX WDNXKBFVX.
拿到了很长的文本,尝试在这里面去找flag发现并没有什么
尝试单表破flag
quipqiup - cryptoquip and cryptogram solver
在这里面找到 FLAG IS 1D817F23-4E20-9405-BF6D-E83D055316D6 这一串,转化一下得到flag
flag{1d817f23-4e20-9405-bf6d-e83d055316d6}
标签:PS,青少年,PV,ABBB,DI,--,GEX,FSM,BKJOGDTKFOEJ From: https://www.cnblogs.com/xwsfw/p/16800222.html