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Technical/picoCTF/t1/q5.md

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+# Question: Mob psycho
+### Key: picoCTF{ax8mC0RU6ve_NX85l4ax8mCl_52a5e2de}
+
+**Core concept: SHA256 Hash**
+
+We're given an APK file. Since they're essentially zip files, I unzipped it using `unzip mobpsycho.apk -d ayan` to unzip it in the custom directory ayan.
+Then, I run `eza -T` to get the tree of all the files in the directory. Running through them, I find a flag.txt. I navigate to the directory; /res/color/.
+
+I run `cat flag.txt` to get the flag. But it's a random string. I tried decoding it thriough a couple of cyphers, and found that it is hex. So, I ran `xxd -r -p flag.txt` to get the flag in hex.
+
+Voila! Found the flag!
+
+Output: picoCTF{ax8mC0RU6ve_NX85l4ax8mCl_52a5e2de}