ALPHASE

Aku ingin menjadi cukup kuat. Kemarin aku telah menjadi kuat, tetapi itu tidak cukup.

picoCTF - Secret of the Polyglot


  • URL: https://play.picoctf.org/practice/challenge/423
  • Title: RED
  • Tags: Easy, Forensics, picoCTF 2024, file_format, polyglot
  • Author: SYREAL
  • Started: 15 July 2025
  • Solved: 15 July 2025
  • Description: The Network Operations Center (NOC) of your local institution picked up a suspicious file, they’re getting conflicting information on what type of file it is. They’ve brought you in as an external expert to examine the file. Can you extract all the information from this strange file? Download the suspicious file here.

After downloading flag2of2.pdf, my browser automatically showed the pdf

…
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picoCTF - DISKO 1


  • URL: https://play.picoctf.org/practice/challenge/505
  • Title: DISKO 1
  • Tags: Easy, Forensics, picoGym Exclusive
  • Author: Darkraicg492
  • Started: 7 July 2025
  • Solved: 7 July 2025
  • Description: Can you find the flag in this disk image? Download the disk image here.

After downloading a file, it appeared to be a gzipped disk image (dd.gz) file. First, I unzipped it

gunzip disko-1.dd.gz

and then from the hint, it seems like I could use strings command and filter the result using grep

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