Challenge Overview
I accidentally wrote the flag down. Good thing I deleted
it!
You download the challenge files here:
- challenge.zip
Solution
To get the file: wget https://artifacts.picoctf.net/c_titan/77/challenge.zip. Then unzip challenge.zip.
Then cd drop-in/ and with ls -a the ".git" file can now be seen. Originally there was just a file called "message.txt" with file contents "TOP SECRET". You can use the git log command to see prior commits made and one of them has a note that says "create flag" with the id of "3d5ec8a26ee7b092a1760fea18f384c35e435139".
With the checkout functionality you can change to past commits with the IDs like this: git checkout 3d5ec8a26ee7b092a1760fea18f384c35e435139. By doing cat message.txt now it can be seen that the flag is in the file.
Flag: picoCTF{s@n1t1z3_30e86...}