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finished ctf decryptor

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This commit is contained in:
Tobias Kessels
2019-10-18 11:23:06 +02:00
parent 531dc32af7
commit ab45bbacf0
1 changed files with 36 additions and 14 deletions
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50
transpose.py
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@@ -2,13 +2,10 @@ import pprint
import math import math
secret="OUHRSTHFSOENOFETURFELIRFTSNEMOEEMELNTARETOKCAETBFIHFTTTNMEELEEOHYBAERORCRSEDNCEUUTHITOYRSTEDSBEIEOTNLRMOEFPOHHAYLAGXYISNIARAUABGBURILFERPEEHTECDINNDITHFFIEHTKESYTDHEREOALGNABSMWEHVEFSOAMETAOCRFTAHEOFSINAMEOTRNGRINTHFFIEHTIEGMELNTSTEOMCOHEOWTEWREAIDANHTRARARTEHEETVFIYREAHVSAONDPROSTRAEUOYCTTTHWISANMUHETENTIISEDHETSUSENTEITNG OOLEEB L" secret="OUHRSTHFSOENOFETURFELIRFTSNEMOEEMELNTARETOKCAETBFIHFTTTNMEELEEOHYBAERORCRSEDNCEUUTHITOYRSTEDSBEIEOTNLRMOEFPOHHAYLAGXYISNIARAUABGBURILFERPEEHTECDINNDITHFFIEHTKESYTDHEREOALGNABSMWEHVEFSOAMETAOCRFTAHEOFSINAMEOTRNGRINTHFFIEHTIEGMELNTSTEOMCOHEOWTEWREAIDANHTRARARTEHEETVFIYREAHVSAONDPROSTRAEUOYCTTTHWISANMUHETENTIISEDHETSUSENTEITNG OOLEEB L"
col_key="EJALMVWUSTRPOBY_" # (16)missing 1 char col_key="EJALMVWUSTRPOBY" # (16)missing 1 char
row_key="GHPTYPAMTAPQRNDHD____" # (21) missing 4 chars one of which is 'D' row_key="GHPTYPAMTAPQRNDHD" # (21) missing 4 chars one of which is 'D'
# KLINGON_ALPHABET="ABDEHIJLMNOPQRSTUVWY" col_alpha="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
# HIERACH_ALPHABET="ABDFGHIJKMNPQRSTUWYZ" row_alpha="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
# cleartext="ABDEFGHIJKLMOPQRSTUVWXYZ"
# my_first_col_key="TEST"
# my_row_key="HALLOABBIEGALE"
@@ -78,19 +75,19 @@ def prows(a,header=None):
def encode(text,key): def encode(text,key):
text=text.ljust(math.ceil(len(text)/len(key))*len(key),'_') text=text.ljust(math.ceil(len(text)/len(key))*len(key),'_')
print("encoding <%s>"%text) # print("encoding <%s>"%text)
columnized_text=cols(text,len(key)) columnized_text=cols(text,len(key))
pcols(columnized_text) # pcols(columnized_text)
shuffled_colums=mosh(columnized_text,key) shuffled_colums=mosh(columnized_text,key)
pcols(shuffled_colums) # pcols(shuffled_colums)
return rows_to_str(shuffled_colums) return rows_to_str(shuffled_colums)
def decode(text,key): def decode(text,key):
print("decoding <%s>"%text) # print("decoding <%s>"%text)
row_data=rows(text,cell_length(len(text), len(key))) row_data=rows(text,cell_length(len(text), len(key)))
prows(row_data) # prows(row_data)
reorderd=mosh(row_data,revert_key(key)) reorderd=mosh(row_data,revert_key(key))
prows(reorderd) # prows(reorderd)
return cols_to_str(reorderd) return cols_to_str(reorderd)
@@ -104,4 +101,29 @@ def decross(text,key_rows,key_cols):
matrix=rows(text,len(key_cols)) matrix=rows(text,len(key_cols))
prows(matrix,key_rows) prows(matrix,key_rows)
decross(secret,row_key,col_key) def get_col_keys():
for x in col_alpha:
yield col_key+x
def get_row_keys():
for x in row_alpha:
for y in row_alpha:
for z in row_alpha:
for d in row_alpha:
yield(row_key+d+x+y+z)
# yield(row_key+"D"+x+y+z)
# yield(row_key+x+"D"+y+z)
# yield(row_key+x+y+"D"+z)
# yield(row_key+x+y+z+"D")
def decryptor():
for col_key in get_col_keys():
for row_key in get_row_keys():
text=encode(encode(secret,col_key),row_key)
yield "{};{};{}".format(row_key,col_key,text)
with open("output3.txt",'w') as f:
for possiblematch in decryptor():
f.write(possiblematch+'\n')