$ cat writeup.md…
$ cat writeup.md…
uoftctf2026
Task: Heavily obfuscated Python flag checker using similar variable names, XOR wrapper functions, and control flow flattening. Solution: Built a regex-based deobfuscator to resolve nested XOR function calls to constants, revealing the encrypted flag parts XOR-encoded with key 125 and arranged via a permutation array.
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$sign in$ grep --similar