Home HackyEaster 2022 Unicorn
Writeup
Cancel

Unicorn

Challenge

Solution

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
$ binwalk unicorn.png

DECIMAL       HEXADECIMAL     DESCRIPTION
--------------------------------------------------------------------------------
0             0x0             PNG image, 512 x 512, 8-bit/color RGBA, non-interlaced
54            0x36            TIFF image data, big-endian, offset of first image directory: 8
106516        0x1A014         PNG image, 512 x 512, 8-bit/color RGBA, non-interlaced
106570        0x1A04A         TIFF image data, big-endian, offset of first image directory: 8
213032        0x34028         PNG image, 512 x 512, 8-bit/color RGBA, non-interlaced
213086        0x3405E         TIFF image data, big-endian, offset of first image directory: 8
319548        0x4E03C         PNG image, 512 x 512, 8-bit/color RGBA, non-interlaced
319686        0x4E0C6         Zlib compressed data, best compression
352486        0x560E6         PNG image, 512 x 512, 8-bit/color RGBA, non-interlaced
352540        0x5611C         TIFF image data, big-endian, offset of first image directory: 8
459002        0x700FA         PNG image, 512 x 512, 8-bit/color RGBA, non-interlaced
459056        0x70130         TIFF image data, big-endian, offset of first image directory: 8

We can extract the images with:

1
$ binwalk -e --dd=png unicorn.png

We get several copies of the unicorn image, but also one of an easter egg with a QR code, score!

Flag

he2022{1_c_un1c0rns_3v3rywh3r3!}