ALPHASE

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picoCTF - hashcrack


  • URL: https://play.picoctf.org/practice/challenge/475
  • Title: hashcrack
  • Tags: Easy, Cryptography, picoCTF 2025, browser_webshell_solvable
  • Author: Nana Ama Atombo-Sackey
  • Started: 7 July 2025
  • Solved: 7 July 2025
  • Description: A company stored a secret message on a server which got breached due to the admin using weakly hashed passwords. Can you gain access to the secret stored within the server?

Additional details will be available after launching your challenge instance.

After I netcatted to the instance I was given a several hashes and I cracked it using this tool. Here’s a snippet of my terminal

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picoCTF - So Meta


It is the same as this problem and this one but instead of encoded in base64, it’s hidden in plain sight

strikingsoul@ramones:~/Downloads$ exiftool pico_img.png 
ExifTool Version Number         : 12.76
File Name                       : pico_img.png
Directory                       : .
File Size                       : 109 kB
File Modification Date/Time     : 2026:01:26 12:29:49+07:00
File Access Date/Time           : 2026:01:26 12:29:49+07:00
File Inode Change Date/Time     : 2026:01:26 12:29:49+07:00
File Permissions                : -rw-rw-r--
File Type                       : PNG
File Type Extension             : png
MIME Type                       : image/png
Image Width                     : 600
Image Height                    : 600
Bit Depth                       : 8
Color Type                      : RGB
Compression                     : Deflate/Inflate
Filter                          : Adaptive
Interlace                       : Noninterlaced
Software                        : Adobe ImageReady
XMP Toolkit                     : Adobe XMP Core 5.3-c011 66.145661, 2012/02/06-14:56:27
Creator Tool                    : Adobe Photoshop CS6 (Windows)
Instance ID                     : xmp.iid:A5566E73B2B811E8BC7F9A4303DF1F9B
Document ID                     : xmp.did:A5566E74B2B811E8BC7F9A4303DF1F9B
Derived From Instance ID        : xmp.iid:A5566E71B2B811E8BC7F9A4303DF1F9B
Derived From Document ID        : xmp.did:A5566E72B2B811E8BC7F9A4303DF1F9B
Artist                          : picoCTF{s0_m3ta_9a8b5aa1}
Image Size                      : 600x600
Megapixels                      : 0.360

The flag is picoCTF{s0_m3ta_9a8b5aa1}

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