1. Introduction reverse -baby
In the beginning OD open , You can't find anything after looking up the string , So it almost dragged in IDA.
So I found out
Here's a bunch of them mov, In observation 66h,6Ch,61h,67h, Some experienced students should know that this is ASCII character flag Of 16 System
Type them into the script one by one , obtain flag.（IDA I'm not very proficient , I hope to have the guidance of the great God. Is there any other way besides knocking one by one ）
This is a super simple sign in question , Drag it in OD perhaps IDA, Search for a string and you get it flag.
use IDA open , stay hex Found in flag, Then save it as a txt file .
4. Pass the game
Is an executable file , After operation , Read the rules of the game , It's about entering one 1-8 The number of , I'll light you up or something . And then I didn't think about it , From 1 Start losing one by one 8, result flag It's coming out . It's a little puzzling ?
And then I got out of order , Find out if it's 1-8 Every number has been entered only once , Then you can get it flag.
5.Timer（ Ali CTF）
It's a apk file , Android reverse ? It's not solved yet .
6. Reverse entry
use winhex open , At the beginning png and base64, suggest base64 Transfer picture . Note that the beginning of the conversion should be deleted .
The two-dimensional code is obtained by converting it into an image , Scan the code flag.