1. base64
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Base64解密
2. Caesar
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凯撒密码解密，当位移为12时得到flag
3. Morse
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摩斯密码 1替换成-,0替换成.
运用一个简单脚本实现转化
morse="11 111 010 000 0 1010 111 100 0 00 000 000 111 00 10 1 0 010 0 000 1 00 10 110"
morse=morse.replace("1","-")
morse=morse.replace("0",".")
print (morse)
运行脚本得到
摩斯密码解密得到flag
4. 不仅仅是Morse
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用摩斯密码工具将密文转成字母
MAYBEHAVEANOTHERDECODEHHHHAAAAABAABBBAABBAAAAAAAABAABABAAAAAAABBABAAABBAAABBAABAAAABABAABAAABBABAAABAAABAABABBAABBBABAAABABABBAAABBABAAABAABAABAAAABBABBAABBAABAABAAABAABAABAABABAABBABAAAABBABAABBA
后面部分全是A和B的组合，想到培根加密
AAAAABAABBBAABBAAAAAAAABAABABAAAAAAABBABAAABBAAABBAABAAAABABAABAAABBABAAABAAABAABABBAABBBABAAABABABBAAABBABAAABAABAABAAAABBABBAABBAABAABAAABAABAABAABABAABBABAAAABBABAABBA
培根密码解密得到flag
5. 混合编码
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看到字符串最后面的==，猜出来是Base64，Base64解密
LzExOS8xMDEvMTA4Lzk5LzExMS8xMDkvMTAxLzExNi8xMTEvOTcvMTE2LzExNi85Ny85OS8xMDcvOTcvMTEwLzEwMC8xMDAvMTAxLzEwMi8xMDEvMTEwLzk5LzEwMS8xMTkvMTExLzExNC8xMDgvMTAw
Unicode 解码，得到
LzExOS8xMDEvMTA4Lzk5LzExMS8xMDkvMTAxLzExNi8xMTEvOTcvMTE2LzExNi85Ny85OS8xMDcvOTcvMTEwLzEwMC8xMDAvMTAxLzEwMi8xMDEvMTEwLzk5LzEwMS8xMTkvMTExLzExNC8xMDgvMTAw
再base64解码
/119/101/108/99/111/109/101/116/111/97/116/116/97/99/107/97/110/100/100/101/102/101/110/99/101/119/111/114/108/100
ascll码转化为字母，得到flag
welcometoattackanddefenceworld