CrossCTF_2017: GovTech Binary Challenge Level 1

Category: Binary Points: 75 Description:

I wonder what's happening in the class les! I have been waiting a really long time for this... File here

Write-up

This is a relatively simple challenge easily solvable through tools like JD-GUI. The flag for the first challenge is embedded in Main.class and can be seen using $ strings Main.class

$ strings finals/govtech-binary-challenge-level-1_75/dist/Main.class 
flag1
Ljava/lang/String;
<init>
Code
LineNumberTable
main
([Ljava/lang/String;)V
<clinit>
SourceFile
Main.java

'flag1{7171a60f8cf4a789b7fa5906aa78f3e7}
Main
java/lang/Object
xctf/NothingImportant
march_on
(Ljava/lang/String;)V

Therefore, the flag is flag1{7171a60f8cf4a789b7fa5906aa78f3e7}.