CTF MISC 图片类做题笔记

from PIL import Image
from pathlib import Path

Path(".\\png").mkdir(parents=True, exist_ok=True)
f = Image.open('just_a_gif.gif')
for i in range(f.n_frames):
    f.seek(i)
    tmp=Image.new('RGB',f.size)
    tmp.paste(f)
    tmp.save('.\\png\\'+str(i)+'.png') 

from PIL import Image
from pathlib import Path

Path(".\\result").mkdir(parents=True, exist_ok=True)
for i in range(11):
    p = Image.open(".\\png\\"+str(i)+'.png')
    f = Image.new('RGB',(83,83),(255,255,255))
    for j in range(41):
        p1 = Image.open(".\\png\\"+str( i + j*11 )+'.png')
        for x in range(83):
            for y in range(83):
                if p.getpixel((x,y)) != p1.getpixel((x,y)):
                    f.putpixel((x,y),(0,0,0))
    f.save('.\\result\\'+str(i)+'.png') 

from PIL import Image
from pathlib import Path

pnglist = [[7,1,6],[9,3,4],[5,2,8]]
f = Image.new('RGB',(83*3,83*3),(255,255,255))
for i in range(3):
    for j in range(3):
        p = Image.open(".\\result\\"+str(pnglist[i][j] -1 )+'.png')
        f.paste(p,(j*83,i*83))
f.save('.\\result\\result.png')