# 0liver "Imaged"Stego 300
> 0liver is a non smart well known hacker like you are.He has developed a "stuffs" hide technique and challenged yourhacker team to figure out what he has hidden on the attached image.
We were given a jpg image of state flags. 
![Flags](./Flags.jpg)
I opened the image in a hex editor and learned that there was a png image hidden after the jpg file data. I extracted the png file, and saw that it had empty flag tags printed on it, but no complete flag.
![Image](./img.png)
At the top of the image, there was some colored pixels on black background. I wrote a script to read the pixel values. 
``` pythonfrom PIL import Image 
def parse_file():    with Image.open('img.png') as img:        img_pix = img.convert('RGB')        width, height = img.size        plain = ''        for i in range(height):            for j in range(width):                r, g, b = img_pix.getpixel((j, i))                if b != 255:                    plain += chr(r)                    plain += chr(g)                else:                    return plain print parse_file()```Converting the pixel values to characters and concatenating them together revealed an ELF file. The flag could be read from the ELF files source code, or by saving it as a program and running it. The flag was 3DS{PNG_2_B!n4ry_2_4SC11}.