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View Balsn CTF 2021 - proxy


Never Trust, Always Verify.

Flag is not a local file, you don't need to use any fuzzing tools.

Author: ysc
View Balsn CTF 2020 - tpc


Flag is in the working directory

update: You don't need to use fuzzing tools to guess file names, The flag file name is unguessable.

Author: ysc
View Balsn CTF 2019 - simple sol aeg
Solidity Automatic Exploit Generation?
try it:
nc 30731

Be a King

* Give you a contract bytecode, give me transaction data to be a king.
* Timeout = 10 seconds per challenge.
* You can call isKing() to verify it.