Write Up CTF SECCON 2014 ONLINE QUALS Forensic Get The Key.txt ( 100 )

Pada tahap ini peserta diminta untuk mencari file key.txt yang disembunyikan pada suatu file system, untuk melihat lebih detailnya , lihat screenshoot dibawah ini

root@MasIcal:~/Downloads# unzip forensic100.zip 

Archive:  forensic100.zip

  inflating: forensic100             

root@MasIcal:~/Downloads# file forensic100

forensic100: Linux rev 1.0 ext2 filesystem data, UUID=0b92a753-7ec9-4b20-8c0b-79c1fa140869

root@MasIcal:~/Downloads# mkdir /tmp/secconforensic

root@MasIcal:~/Downloads# mount -o loop forensic100 /tmp/secconforensic/

root@MasIcal:~/Downloads# cd /tmp/secconforensic/  

root@MasIcal:/tmp/secconforensic# grep -r 'key.txt'

Binary file 1 matches

root@MasIcal:/tmp/secconforensic# file 1

1: gzip compressed data, was "key.txt", from Unix, last modified: Wed Oct  1 13:00:52 2014

root@MasIcal:/tmp/secconforensic# gunzip < 1

SECCON{@]NL7n+-s75FrET]vU=7Z}

FLAG : SECCON{@]NL7n+-s75FrET]vU=7Z}

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