# Treeeeeeee1. Intro2. Find every pictures3. Find the flag 
## IntroWith this challenge, a file is attached. It's a zip file with a folder, containg something like 28 000 folders with 1337 files.
IT'S GONNA BE FUN
## Find every picturesI was using Windows, so here's the way to do it under Windows
Firstly, I extracted the archive. Then, I went to the bigtree folder, and research "."Scroll to the end and select all the files
![](https://imgur.com/yH8f9kD.png)
Then copy it to a new folder, the flag is one of these.
## Find the flagWe now have 1300 images. A quick look at the images shows that there are two images that are cloned.
![](https://imgur.com/tr4KZa3.jpg) and ![](https://imgur.com/pogbWw1.jpg)
So i decided to made a quick python script to deleted the duplicated images.
Here with all the comments :```from os import listdir, removefrom os.path import isfile, joinimport hashlib
#a hash is a kind of "signature"
BLOCK_SIZE = 65536 #for hash purposemypath  = "F:\\CTF\\riceteacatpanda\\gen\\treeeee\\pic\\" #the path of the folder with images
onlyfiles = [f for f in listdir(mypath) if isfile(join(mypath, f))] #an array with the name of every images in the folder
def main(): #the function to execute    uniqueHashs = [] #the array containing the hash of every single file    uniqueHashs.append('test') #just to make the array not empty    for actualFile in onlyfiles:  #the loop to test every file        actualFile = mypath + actualFile #here we concatenate the path and the filename, to have a full path        deleted = 0 
        hashOfFile = hashFile(actualFile) #calculate the hash of the file        for comparaisonHash in uniqueHashs: #test if the hash already exist            if (hashOfFile == comparaisonHash and deleted != 1): #if yes, we delete the file                remove(actualFile)                deleted = 1        if (deleted != 1):            uniqueHashs.append(hashOfFile) #else, we keep the file and add it's hash in the array    return 0;
def hashFile(fileToRead): #this function return the hash of the file given in argument     file_hash = hashlib.sha256()      with open(fileToRead, "rb") as fi:         fb = fi.read(BLOCK_SIZE)         while len(fb) > 0:             file_hash.update(fb)             fb = fi.read(BLOCK_SIZE)    return(file_hash.hexdigest()) ```
After executing this script, it only remain 3 pictures :
![](https://imgur.com/tr4KZa3.jpg) and ![](https://imgur.com/pogbWw1.jpg) and ![](https://imgur.com/vbOvcA9.jpg)
The flag is : `rtcp{meow_sharp_pidgion_rice_tree}`
PS: the cat in the hint was like this : ![](https://imgur.com/85gPGoG.png)
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*If you have any questions, you can dm me on Discord, nhy47paulo#3590*
