[CSAW CTF 2023] Baby's First Write Up

🛹 Baby's First Write Up

1.  문제 확인 후 첨부 파일 다운로드

2.  다운받은 babyfirst.py 파일을 열어 코드 확인

#!/usr/bin/env python3

# Reversing is hard. But....not always.
#
# Usually, you won't have access to source.
# Usually, these days, programmers are also smart enough not to include sensitive data in what they send to customers....
#
# But not always....

if input("What's the password? ") == "csawctf{w3_411_star7_5om3wher3}":
ㅤㅤprint("Correct! Congrats! It gets much harder from here.")
else:
ㅤㅤprint("Trying reading the code...")

# Notes for beginners:
#
# This is Python file. You can read about Python online, but it's a relatively simple programming language.
# You can run this from the terminal using the command `python3 babysfirst.py`, but I'll direct you to the internet again
# for how to use the terminal to accomplish that.
#
# Being able to run this file is not required to find the flag.
#
# You don't need to know Python to read this code, to guess what it does, or to solve the challenge.

3.  If 문의 초반부에서 Flag의 형식을 갖춘 문자열 발견

 

csawctf{w3_411_star7_5om3wher3}

4.  다시 문제 화면으로 돌아와 발견한 문자열 입력  -->  문제 해결 성공