This is the write up for the room Intro to Python on Tryhackme and it is part of the Web Fundamentals Path
Make connection with VPN or use the attackbox on Tryhackme site to connect to the Tryhackme lab environment.
Tasks Intro to Python
For all the task in this room I’ll be using gedit to create a .py file. You can install gedit by typing
apt install gedit
Task 1
Read all that is in the task and press complete
Task 2
Read all that is in the task and press complete
Task 3
Read all that is in the task. All answer can exactly be found in this task
3.1 What is the name of >
Answer: Greater than
3.2 What is the name of !=
Answer: Not Equal to
3.3 1 != 0 will this return true or false (T or F)
Answer: T
3.4 What is the name of <=
Answer: Less than or equal
3.5 Will this sample code return truee or false
a= 15
if <= 15:
The statement is saying if less then or equal to. In this case it is equal
Answer: True
Task 4
Read all that is in the task and press complete. DO note the IN operator 😀
Task 5
Read allt hat is in the task and learn the diffence
5.1 What data type is 13
Answer: Interger
5.2 What data type is “65”
Notice the ” around the 65. This means it is an string
Answer: String
5.3 What data type is 62.193
Answer: Float
Task 6
Read all that is in the task and press complete
Task 7
Read all that is in the task and press complete
Task 8
Read all that is in the task and press complete
Task 9
Read all that is in the task and press complete
Task 10
Read all that is in the task then Install the virtual enviroment by typing
sudo apt install virtualenv
Create virtual environment
virtualenv --python=python3 introduction
Activate the environment
source introduction/bin/activate
Notice the name in
We can deactivate by tyiping
deactivate
Press complete when done
Task 11
Install pip by typing in
sudo apt install python3-pip
Task 12
Download the file that is attached to this task and save it to a directory where we can read it.
We need to decode
- 5 times encoded using base 64
- 5 times encoded using base 32
- 5 times encoded using base 16!
We use the module from base64 import *
Type inside the directory where you save the file and in the terminal
gedit task12.py
Let;s start writing the code
Forst we do the import
import base64
Now we need to read the file
encodedflag = open("encodedflag.txt","r")
print(encodedflag.read())We see the utput
So we know that we can read the file and output it to screen.
Now start the encoding part
Because we are going to use multiple times the same code, we are going to use a funtions
Type in the following 3 functions
def b16d(encoded): decoded = base64.b16decode(encoded) return decoded def b32d(encoded): decoded = base64.b32decode(encoded) return decoded def b64d(encoded): decoded = base64.b64decode(encoded) return decoded
And we are going to use the IF statement to loop trough each function to decode the flag
encodedflag = open("encodedflag.txt","rb").read()
for i in range(5):
encodedflag = b16d(encodedflag)
for i in range(5):
encodedflag = b32d(encodedflag)
for i in range(5):
if i != 4:
encodedflag = b64d(encodedflag)
else:
encodedflag = b64d(encodedflag)
print("The flag is:",encodedflag)The complete code
Run this by typing in
python task12.py
Remember if you use the same code over and over again create a function
