# PasswordGuesser THCON 2024
## Challenge![password-guesser](passwordguesser.png)
## Understanding the challenge- The description suggests that there is a secret hidden in the source code of the password-guesser and secret is given when we give password.- There is also a file password-guesser.elf- Maybe we have to decompile it to get the secret.- Assuming it is written in python lets move forward.
## Solution- To decompile ELF file written in python there is a tool pyinstxtractor so lets decompile it using this tool.![decompiler-output](pyinstxtractor.png)![dcompiled](dcompiled.png)- Decompiled folder contains many files but we are interested in password-guesser.pyc because it is the main file and it contains the secret.- It is a compiled python file so we have to decompile it also.- It can be decompiled using tool 'uncompyle6'.![flag](flag.png)- In the reveal function f1-f13 arranged in ascending order is the base64 encoded flag.```f1 = "Zm"f2 = "xh"f3 = "Zz1U"f4 = "SEN"f5 = "PTntz"f6 = "b01V"f7 = "Q0h"f8 = "fNF90a"f9 = "DNf"f10 = "RklM"f11 = "RV9z"f12 = "aVozf"f13 = "Q=="```
- base64 encoded flag```ZmxhZz1USENPTntzb01VQ0hfNF90aDNfRklMRV9zaVozfQ==```
- base64 decoded```flag=THCON{soMUCH_4_th3_FILE_siZ3}```
### flag : THCON{soMUCH_4_th3_FILE_siZ3}