Writeups/1337UP/In Plain Sight
1337UPEasyCTF Challenge

In Plain Sight

In Plain Sight

##Challenge Name: In Plain Sight

###Solves

  • >Solves: 465
  • >Points: 50

###Description

Barely hidden tbh..

Attachment: meow.jpg


###Approach

  1. >

    Initial Analysis:

    • >Downloaded the attached image (
      meow.jpg
      ) and opened it. It appeared to be a normal picture of a cat with no visible clues.
  2. >

    Checking Metadata:

    • >Used
      exiftool
      to inspect the image metadata:
      bash
      exiftool meow.jpg
    • >No relevant information was found in the metadata.
  3. >

    Analyzing the File Contents:

    • >Ran the
      strings
      command to look for hidden text:
      bash
      strings meow.jpg
    • >Found two interesting pieces of information:
      • >A reference to a file named
        flag.png
        .
      • >A string that resembled a password:
        YoullNeverGetThis719482
        .
  4. >

    Identifying Hidden Data:

    • >Used
      binwalk
      to analyze the file for embedded data:
      bash
      binwalk meow.jpg
    • >The analysis revealed an embedded archive.

    Image1
    Image1

  5. >

    Extracting the Archive:

    • >Extracted the hidden archive using
      binwalk
      :
      bash
      binwalk -e meow.jpg
    • >The archive required a password to unlock. Entered the discovered password
      YoullNeverGetThis719482
      .
  6. >

    Inspecting the Extracted File:

    • >The extracted archive contained a file named
      flag.png
      . Upon opening it, it appeared to be a solid white image.

    Image2
    Image2

  7. >

    Using Steganography Tools:

    • >Opened
      flag.png
      in Stegsolve, a tool for analyzing images for hidden data.
    • >Switched through the various color map filters and discovered the flag under the Random Color Map 1.

    Image3
    Image3

  8. >

    Flag Found:

    INTIGRITI{w4rmup_fl46z}

###Flag

INTIGRITI{w4rmup_fl46z}

$ echo "Open to collaborations, research, and security engineering work."

> Open to collaborations, research, and security engineering work.

$ uptime

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