code_in_morse：机票条码

下载附件是一个流量包，wireshark打开，搜索http协议。
发现jpg图片

tcp追踪流发现摩斯密码

CTFCrack解密摩斯密码

解密结果：
RFIE4RYNBINAUAAAAAGUSSCEKIAAAAEUAAAAA7AIAYAAAAEPFOMTWAAABANUSRCBKR4F53M52F3NWOAMIQ37776R5GE6YNAWJPUA4ZBZM6M5ZPRVWIURUHGMBRAMU7T3P57X776PP5DOBIQIXQE2RCZC5EYFWBAESRALQNACALVNE4B2TCABEA4XIZQAVKFXW632O3XS5HZT7R2J747545E4Y7K6HJA7WI5Y62W4OH7HJ75RL2VOMUMN2OOXOWU7RXV7U6D7AFC2X6TBGSDQII3ABOUCCARS2Q7CAATKD2HRTI6JKAZNIXYGK3ZO4POZENG566RDQVSAKWF26VLJJPC5VD2FAATKAMCHTP27Y5IKTWNNAKLVNEPUXLH6XVICOQMXGHEPDBYZYXZ2R6KKTU7ZF7X2CBGUXSOSHICOPIPQCJNAT3JO5ND5OHLBW5BF4CWNI5BFKTERWIUWFZYKVVKURWS7PI4FEXURAUFXBD6JQKSPZFJ7EXRCPEUSHJMS7GVKVDOG7W6F4ZL4XILUVCKWGFZ3KV2I5WBR7R2QALVHNSEWCKDCIXCA3VJU2QAJVCUZSO3LZICZJAASKAD2LKQ6BLVPQLUDSDLFPZP2WOTPLVLNABG7SPICMT3K52QLTWK3Y4NBXIMX5NRKJIA5FLO6Y3LVP55BPDITRVN2UYEZ33ERFZ2R4KTFVJVECKKRXKA2LRCKQFHEAIEAKZWYCKXRXLGJYJXQKZ445HWLUPAFGIC7FV46SB5MERIYNWSHUCNUQP5OB4S2BDQ7627HULZQRW3QYNKQKU3VHCNJSU6E36IUEPU2TBGKZOSB22N2R6TPY7XUG32VIXLTHGHJXGWNWMTJOGFMAJHOVWIIGDSG2KOONGK7UDFQS4ZOK2OAXKAXWZRTOTZQ2Q7CKRKRWAK6IAK2SRYLT72DGHQXRJGGDN57EJBZ2M7VJHOGJKEHU5ASU2KKTFB4SW5MB5C4YR4SSKNON3XLSS6K7CGJKAZNIP6E7RVUY6OFIBTTXYREMWKWPIDKRPTJSMRJPUXKUOWT5IZP3HEJ65OYVILIUGUI2QHGH32VAAXKO23H2BTIAF2UF4QESSANVEKPILOY63ZA5GUZRLLCIQSY6IRWLSTWULC5KBRAFOQPPEED3VB6IKKDRSN2FF4UVXS7KT6TUQCRQZ2DXZS5AYOCLLHKK6I2JUPRSK2HVI3YKBTZXWQDNGI3FMYHFMO3BIYABKUPTFSK3J4KKPKNALUMP5NFERHUB3I7IWTXQEAAMQUPQGRADFFIMKQ3MQNX3BW7NU4WMITZDB5D3FP3VHD2SPCX65ZVL44VUHQMAHMZLQFKADBFIO2RRKTCDYZJ2BCENKZ2LY2TIKSH3MMU3EUB5T26E4TP4NK3F6KRSTI3TEKTBKXTJYKHQATMWUDXT5T4CUYXK6U5H2LYAKUO5LJIFS2QY4O7KZP3KBCODRBAGLKPDN5WUTLOAKEOJP22CBGU6GXYJUPRTXXHKJLP7D46I2TPFLWQRJ4NIEFDYSNKDYFCERFHAC5NIWXVQXELIUSGKLKZLGT36JMOS7IIPBU76KXNQDJV4ZSXCE7F5P4U4QIRAKPAWRQFJLVHRFJDKIVLAVFOORM7F5S3U5D6AIFDV27JYJ243PIM6UKVSGLKQIZACNKPHVJAQJNPUAWACJNAWYEJBR2Q6LTA3STOLSLO6QZFKQ5QGFEZ5TKCJJ6VKBVNVO7DKG27T3HHJDRVXTPD6H7EW6FI6QB5GHQVKU3VP54TBBQMIDFJ6QFKRZXP4UE2QG3EVJDK3AASKBCE5W3VDHVB4JVC7IXOG5C7J4MZWSRDJFSHKH626LIUGRPZ6T2SEANVP5KDXFNKGQIWQS5J5MC5HBH5GGTHZLGWXKOWSCRQNULFGO4C3ZHUZF6O57K4YV2VYUR5BF3PDMEKR7JZEZJAAEUUORJ32GSHIAG4OWQS5LPPKVU2J7P5AQUQWRK7HE5BX3UWXJNPSKKBICC5Z5Y5L7AESSANUYPUNR2USESHE2ORQMJ5H6KTB6YSTVZD3FA6NLBUASWRM6VZYTXV6E4J6SW2XLZ6RGW7JL5FECJ53N7KRKRXMJGKVJTH6FNIFIOOA26AFHEAXJCUAQGBON2UPZNMBRKW7ZKUDZFYMCQBE5B4SUCTJ6TIOOT6J2XVXXLVRMPT3VGQUCSIAU4DKFJ7535XXUWGDSV3DJHQ2SXK3PILDELUPQVAVKFKJQM2GO47WTXXIZQPKNAE2VSDIDGT2VSSNUFSQAJV7WEY2WKVFSQANMFERVARSSUGEJ7TZLISVGYVPGPSVZTRTRYZXVI6VNNIZ6LFNPL2VAQVECPVZYLF3BR2M2PCXAF5USD6UVR7STM27OSOM7D3XUU2RZD5KWOKSBKIKLW3Q6VCIJTFVJLQDBREGECQBDKTJETLKU5KYQJVABNCATKD4MCVP6G75HT2V4CPQSW64SMM2VIBS2Q65ENEIBIETVJ5MFEFVLPEZXG3JEXX4QXSSUAABGMN67M5CJJVGTWUOS7742UGJK6VG2TGVFVCIYCUE2L44E2VBFJHTFNT7URWE6HSIZ2PF5TR7QST3FEAXIWSCMJO4V74VEACNKEGJF3B2IDGRF3BRAYWTALFVCFR7IZCNGVDEUSAZURUGABG5H6TDDKNEVH4TWZC2DI6FR6XT6W64SDC2JY3WDEXTLOK4ZBKPEXZMPFC4RFCFU5KQ6AEDV6T2MGAJ7HUQQUXSPY2U6VFNR3YDVWWKLK54UE2RPPUBGUJHDZ5SGMUY563JFZIRAPIXIGHLD2Q5IMUQOWIGOS2OADI4FPZ3GPJHQV2BU74SW6AUSPXX57VPJ24ZFJ7FNQIURSX6KQZGLKPDN5TLRKZZEGEN6K7T65EHP2X7E54M4AZQVRPFHRVDOZBLVAJFSHUPIVMTKKFUF4C2X7FBGUNWESTWFYXM37PZIBXQMWUERWUSQTFVD65OZR7YZBUACNIP46K3EQXWY5SUSIYGESUH3NLI6FI6DAFNUHQD5KLADK23QWSXWV4UE2RTF6HNMZWTVLVVZMN6NGKXOPO7AKI7ZO2AYBGV7YFMMCAQKQ65D6VINJOPMPKVO3XS73ICKETFERWLKCFX5YEYQA566QZJPETH7AKRZBJPENQNUWN4K2DYTNLWDKPY2WKGMDCIC5QRQUSO42ZPETOUO3VHUIJSVHSN3UXZ2B6OR6ZYB2J4KX5W6QRKB5QMEKQQVTTVO2LJYMULY2WDFFQWROXMWUELDVPZBIDFVAWQFLR6AJ6POOEHBW2U4UDC7S2FRU4VC47P3WQJ4BROGKLYQXSVIHLE7ZXAIKID2LZFB5JHV4NIAKQCAJFGYXI3AEAXI2JYDRGUDCMBJIR7ABXO3NF6UIUKCLNAAAAAACJIVHEJLSCMCBA====

末尾四个=号，是base32
base32转图片

import os
import base64

strs = '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=='
#with open('A.txt','r') as h:
    #for line in h:
        #strs += line

with open('test.png','wb') as f:
    f.write(base64.b32decode(strs))

得到图片（机票条码。。。。。。。。）

上传在线解码(https://www.sojson.com/qr/zxing.html)

得到一张图片

下面常规操作了。。。
扔winhex看一下

就是他了！
F5解密

得到flag

-----------------------------------------我是分割线-----------------------------------------------
菜鸡不断打怪ing。。。