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Shanxi group (enterprises) in the second network security skills competition part problem WP (8)
2022-07-30 04:29:00 【[email protected]】
前言
有幸参加了2022年山西省第二届网络安全技能大赛企业组的比赛,这是第一次参加ctf比赛,本着积累实战经验的目的去的,排名有点意外.
提示:以下是本篇文章正文内容.
一、题目
题目:
加密题.
附件:
encode.py和cipher.txt
encode.py
def encode(cipher,hide):
replace_list = ['a','b','c','d','e','f']
storage = []
for i in hide:
try:
if i in replace_list:
dict = {'a':10,'b':11,'c':12,'d':13,'e':14,'f':15}
storage.append(cipher[::dict[i]])
else:
storage.append(cipher[::int(i)])
except Exception as e:
print(e)
pass
return storage
def main():
cipher = str(input('>>>')).replace(' ','')
if len(cipher) <= 16:
print('[-]len(Cipher) > 16 !')
else:
hide = str(input('>>>')).lower()
result = encode(cipher,hide)
with open('cipher.txt','w') as f:
f.write('\n'.join(result))
main()
cipher.txt
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Ssno
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Sataean
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
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Saryhcqnienmod
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Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sataean
Sgshncon
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Stsa
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Sgoaytthqaseeioaoin
Soytqseoon
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Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Sgoaytthqaseeioaoin
Soytqseoon
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Saryhcqnienmod
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Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sgoaytthqaseeioaoin
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Sataean
Seaorpyshtcnqensinefnomtohdn
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Steganographyisthetechniqueandscienceofinformationhiding
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Sgoaytthqaseeioaoin
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Sgoaytthqaseeioaoin
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Seaorpyshtcnqensinefnomtohdn
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Sgshncon
Shnemg
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Saryhcqnienmod
Sgoaytthqaseeioaoin
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Sgoaytthqaseeioaoin
Seaorpyshtcnqensinefnomtohdn
Sgoaytthqaseeioaoin
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Steganographyisthetechniqueandscienceofinformationhiding
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Sgoaytthqaseeioaoin
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
Sgoaytthqaseeioaoin
Saryhcqnienmod
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Sgoaytthqaseeioaoin
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Sgshncon
Sieid
二、解题步骤
1.解题思路
Known from the encryption algorithm,cipherString must be greater than16位,Any spaces will be cleared.hide的取值范围为123456789abcdef.
在加密过程中,会将a转换为10,b转换为11,c转换为12,d转换为13,e转换为14,f转换为15.
对cipherString presshide位截取,写入cipher.txt
2.解题过程
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Sgoaytthqaseeioaoin
Soytqseoon
Stsa
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Steganographyisthetechniqueandscienceofinformationhiding
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Steganographyisthetechniqueandscienceofinformationhiding
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Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Syqeo
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Soytqseoon
Ssno
Soytqseoon
Sgshncon
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sgoaytthqaseeioaoin
Sgshncon
Sataean
Seaorpyshtcnqensinefnomtohdn
Syqeo
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Sgshncon
Saryhcqnienmod
Soytqseoon
Snptcuscnahg
Sgshncon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Ssno
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Soytqseoon
Sataean
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Sgshncon
Sgshncon
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Syqeo
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Soytqseoon
Ssno
Soytqseoon
Sgshncon
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sgoaytthqaseeioaoin
Sgshncon
Sataean
Seaorpyshtcnqensinefnomtohdn
Syqeo
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Sgshncon
Saryhcqnienmod
Soytqseoon
Snptcuscnahg
Sgshncon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Ssno
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Soytqseoon
Sataean
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Sgshncon
Sgshncon
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Syqeo
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Soytqseoon
Ssno
Soytqseoon
Sgshncon
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sgoaytthqaseeioaoin
Sgshncon
Sataean
Seaorpyshtcnqensinefnomtohdn
Syqeo
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Sgshncon
Saryhcqnienmod
Soytqseoon
Snptcuscnahg
Sgshncon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Ssno
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Soytqseoon
Sataean
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Sgshncon
Sgshncon
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Syqeo
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Soytqseoon
Ssno
Soytqseoon
Sgshncon
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sgoaytthqaseeioaoin
Sgshncon
Sataean
Seaorpyshtcnqensinefnomtohdn
Syqeo
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Sgshncon
Saryhcqnienmod
Soytqseoon
Snptcuscnahg
Sgshncon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Ssno
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Soytqseoon
Sataean
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Sgshncon
Sgshncon
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Syqeo
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Soytqseoon
Ssno
Soytqseoon
Sgshncon
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sgoaytthqaseeioaoin
Sgshncon
Sataean
Seaorpyshtcnqensinefnomtohdn
Syqeo
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Sgshncon
Saryhcqnienmod
Soytqseoon
Snptcuscnahg
Sgshncon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Ssno
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Soytqseoon
Sataean
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Sgshncon
Sgshncon
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Syqeo
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Soytqseoon
Ssno
Soytqseoon
Sgshncon
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sgoaytthqaseeioaoin
Sgshncon
Sataean
Seaorpyshtcnqensinefnomtohdn
Syqeo
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Sgshncon
Saryhcqnienmod
Soytqseoon
Snptcuscnahg
Sgshncon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Ssno
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Soytqseoon
Sataean
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Sgshncon
Sgshncon
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Syqeo
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Soytqseoon
Ssno
Soytqseoon
Sgshncon
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sgoaytthqaseeioaoin
Sgshncon
Sataean
Seaorpyshtcnqensinefnomtohdn
Syqeo
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Sgshncon
Saryhcqnienmod
Soytqseoon
Snptcuscnahg
Sgshncon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Ssno
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Soytqseoon
Sataean
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Sgshncon
Sgshncon
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Syqeo
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Soytqseoon
Ssno
Soytqseoon
Sgshncon
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sgoaytthqaseeioaoin
Sgshncon
Sataean
Seaorpyshtcnqensinefnomtohdn
Syqeo
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Sgshncon
Saryhcqnienmod
Soytqseoon
Snptcuscnahg
Sgshncon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Ssno
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Soytqseoon
Sataean
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Sgshncon
Sgshncon
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Syqeo
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Soytqseoon
Ssno
Soytqseoon
Sgshncon
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sgoaytthqaseeioaoin
Sgshncon
Sataean
Seaorpyshtcnqensinefnomtohdn
Syqeo
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Sgshncon
Saryhcqnienmod
Soytqseoon
Snptcuscnahg
Sgshncon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Ssno
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Soytqseoon
Sataean
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Sgshncon
Sgshncon
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Syqeo
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Soytqseoon
Ssno
Soytqseoon
Sgshncon
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sgoaytthqaseeioaoin
Sgshncon
Sataean
Seaorpyshtcnqensinefnomtohdn
Syqeo
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Sgshncon
Saryhcqnienmod
Soytqseoon
Snptcuscnahg
Sgshncon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Ssno
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Soytqseoon
Sataean
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Sgshncon
Sgshncon
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Syqeo
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Soytqseoon
Ssno
Soytqseoon
Sgshncon
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sgoaytthqaseeioaoin
Sgshncon
Sataean
Seaorpyshtcnqensinefnomtohdn
Syqeo
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Sataean
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Snptcuscnahg
Sgshncon
Saryhcqnienmod
Sgshncon
Saryhcqnienmod
Soytqseoon
Snptcuscnahg
Sgshncon
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Snptcuscnahg
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Snptcuscnahg
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Ssno
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Soytqseoon
Sataean
Soytqseoon
Snptcuscnahg
Soytqseoon
Ssno
Sgshncon
Saryhcqnienmod
Sgshncon
Sgshncon
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgshncon
Sataean
Sgshncon
Saryhcqnienmod
Soytqseoon
Stsa
Sgshncon
Sgoaytthqaseeioaoin
Soytqseoon
Stsa
Soytqseoon
Syqeo
Sgshncon
Soytqseoon
Soytqseoon
Snptcuscnahg
Seaorpyshtcnqensinefnomtohdn
Ssno
Saryhcqnienmod
Saryhcqnienmod
Saryhcqnienmod
Steganographyisthetechniqueandscienceofinformationhiding
Snptcuscnahg
Sgoaytthqaseeioaoin
Saryhcqnienmod
Sgoaytthqaseeioaoin
Snptcuscnahg
Saryhcqnienmod
Saryhcqnienmod
Soytqseoon
Sgshncon
Shnemg
Soytqseoon
Saryhcqnienmod
Sgoaytthqaseeioaoin
Sgshncon
Sgoaytthqaseeioaoin
Seaorpyshtcnqensinefnomtohdn
Sgoaytthqaseeioaoin
Sataean
Sgoaytthqaseeioaoin
Srhqino
Sgoaytthqaseeioaoin
Sgshncon
Sgoaytthqaseeioaoin
Sgoaytthqaseeioaoin
Soytqseoon
Saryhcqnienmod
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Saryhcqnienmod
Soytqseoon
Soytqseoon
Sgoaytthqaseeioaoin
Sataean
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Sgoaytthqaseeioaoin
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Sgoaytthqaseeioaoin
Sgoaytthqaseeioaoin
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgoaytthqaseeioaoin
Steganographyisthetechniqueandscienceofinformationhiding
Sgoaytthqaseeioaoin
Saryhcqnienmod
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgoaytthqaseeioaoin
Srhqino
Sgoaytthqaseeioaoin
Sataean
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Sgoaytthqaseeioaoin
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Snptcuscnahg
Sgoaytthqaseeioaoin
Soytqseoon
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Steganographyisthetechniqueandscienceofinformationhiding
Soytqseoon
Seaorpyshtcnqensinefnomtohdn
Soytqseoon
Snptcuscnahg
Sgoaytthqaseeioaoin
Srhqino
Sgoaytthqaseeioaoin
Seaorpyshtcnqensinefnomtohdn
Sgshncon
Sieid'''
s=x.split('\n')
cipher = max(s,key=len)
#cipher = 'Steganographyisthetechniqueandscienceofinformationhiding'
cipher_str=[]
for i in range(1,16):
tmp = cipher[::i]
cipher_str.append(tmp)
hide =[]
for c in s:
hide.append(str(cipher_str.index(c)+1)) #Because the array start bit is 0,所以+1使其进入hide的取值范围.
#转换为十六进制,将10-15替换为a-f
replace_dict={'10':'a','11':'b','12':'c','13':'d','14':'e','15':'f'}
flag=[replace_dict[i] if i in replace_dict else i for i in hide]
flag=''.join(flag)
import binascii
print(binascii.unhexlify(flag))
b'Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.Countingiseasy,butitisbettertouseaconvenientwaytosolve.DASCTF{d729873dadf9ccb3a14a89a1e6babe82}'
另一种思路,生成hide与cipher对应关系,This replaces the original ciphertext string with hide值,这样更容易理解.
cipher = max(s,key=len)
#cipher = 'Steganographyisthetechniqueandscienceofinformationhiding'
#生成hide与cipherStrings correspond to dictionaries
hide_num={cipher[::i]:str(i) for i in range(1,16)}
#Hex conversion dictionary
replace_dict={'10':'a','11':'b','12':'c','13':'d','14':'e','15':'f'}
将cipher.txtThe ciphertext in is converted to hide值(十进制)
flag=[hide_num[i] for i in s]
将flag列表中的10-15转换为a-f
flag=[replace_dict[i] if i in replace_dict else i for i in flag]
flag=''.join(flag)
import binascii
print(binascii.unhexlify(flag))
flag为:
DASCTF{d729873dadf9ccb3a14a89a1e6babe82}
三、总结
比赛时未解出,没看懂意思,Only slowly understand offline.
版权声明
本文为[[email protected] one word]所创,转载请带上原文链接,感谢
https://yzsam.com/2022/211/202207300416449591.html
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