i春秋 crypto write up

problem:回旋十三踢

from:2015广州强网杯

description:

看我回旋13踢
synt{5pq1004q-86n5-46q8-o720-oro5on0417r1}

write up:

rot13

flag{5cd1004d-86a5-46d8-b720-beb5ba0417e1}

 


problem:Rotated!

from:iceCTF

description:

They went and ROTated the flag by 5 and then ROTated it by 8! The scoundrels! Anyway once they were done this was all that was left VprPGS{jnvg_bar_cyhf_1_vf_3?} 

tips:flag格式是IceCTF

write up:

由5,8猜测rot13

rot13

IceCTF{wait_one_plus_1_is_3?}


problem:致敬经典

from:2015广州强网杯

description:

 

lrua{1uy3yj9l-yw9u-48j2-uuj8-36h03706y7u7}

write up:用百度搜图发现这个人是克里斯托弗·沃肯,去百科搜他作品,发现他出演过《凯撒大帝》

凯撒密码变种

a b c d e f  g  h  i    j   k    l    m   n  o   p   q   r    s  t   u   v   w   x   y    z
1 2 3 4 5 6  7  8  9   10   11   12  13  14  15  16  17  18  19  20  21  22  23  24  25  26
lrua对应flag 发现偶数位左移6位,偶数位右移6位


flag{1ae3ed9f-ec9a-48d2-aad8-36b03706e7a7}

problem:

from:

description:

write up:

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转载自www.cnblogs.com/jasmine-lee/p/11551483.html