S.H.E.L.L CTF

Check Flag - Rev [50 pts]

Description

Was cleaning the junk out of my PC, when I found this really old executable. Help me look for the flag.

40KB

checkflag.zip

archive

Check Flag

Solution

strings checkflag.exe | grep "SHELL{"

Flag: SHELL{bas1c_r3v}

Keygen - Category [80 pts]

Can you get the flag from the given file.

663B

keygen.zip

archive

keygen.py

Solution

Taking all the parts to the code and putting them together into my code I could easily print out the flag.

password = ['S', 'H' , 'E', 'L', 'L', '{', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '']
password[28] = "}"
password[6] = "s"
password[7] = "3" 
password[8] = "n"
password[9] = "b"
password[10] = "0"
password[11] = "n"
password[12] = "z"
password[13] = "a"
password[14] = "k"
password[15] = "u"
password[16] = "r"
password[17] = "4"
password[18] = "_"
password[19] = "k"
password[20] = "4"
password[21] = "g"
password[23] = "y"
password[22] = "3"
password[24] =  "0"
password[25] = "5"
password[26] = "h"
password[27] = "1"
for i in password:
    print(i, end="")

print(password)

Flag: SHELL{s3nb0nzakur4_k4g3y05h1}