$ cat writeup.md…
$ cat writeup.md…
spbctf
Task: Go 1.12.9 static ELF that embeds a Python 3.6 .pyc via markbates/pkger; the flag check lives in the embedded bytecode. Solution: extract the hex-encoded gzip pkger blob, decode the base64 pyc, decompile with uncompyle6, then reverse the XOR-against-sha256-keystream encrypt routine to recover the flag.
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