Cyber Pearl

CTF PH Student Players

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HexBin (500 points)

Binary is older than you imagined, find the answer in 2.

go.ctf.site:10070

The 2 in this challenge is a file after browsing the link folder with go.ctf.site:10070/EKO/ shows:

ENCRYPTED_1
ENCRYPTED_2
README.md

ENCRYPTED_2

:#hGPBR9dD@acAh"X!$mr2cmr2cmr!!!!!!#$!!!!!)r[5%NJ@N956b"*4L"C6e8
J4NP14#"85%P6)%P8)%e&38j6)%NJ9d&6)%0"8&498N9%)%*C)&4)45"'3NNX)%P
0)&"56eC*4%P14b"C6e8J9%K&)%&18eG&8L"86b"C6e95)%4&8e""59)+#N9,6hY
hG'KIDA0IG'KTFepPEQ0[C'PZChfRp`!!:

This crypto is UUEncoding, so we can use the UUdecoder to decode this file. But @dreb found out a missing header of this encoded text.

Alt text

So adding the (This file must be converted with BinHex 4.0) as header will solve the problem on decoding.

(This file must be converted with BinHex 4.0)
:#hGPBR9dD@acAh"X!$mr2cmr2cmr!!!!!!#$!!!!!)r[5%NJ@N956b"*4L"C6e8
J4NP14#"85%P6)%P8)%e&38j6)%NJ9d&6)%0"8&498N9%)%*C)&4)45"'3NNX)%P
0)&"56eC*4%P14b"C6e8J9%K&)%&18eG&8L"86b"C6e95)%4&8e""59)+#N9,6hY
hG'KIDA0IG'KTFepPEQ0[C'PZChfRp`!!:

Tool used: UUencode

Result:

HI ZERO IF YOU FIND THIS IT MEANS I WAS CAPTURED BY THE FBI, IM PROVIDING YOU THE ANSWER TO YOUR DESPAIR

EKO{wth_is_this_encoding}

FLAG: EKO{wth_is_this_encoding}