1337 Local CTF: Baby-AES — Known Plaintext → Tiny Keyspace
Recovering a 9-byte AES key by using the known flag format and a known plaintext/ciphertext pair.
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1337 Local CTF: baby overflow — Integer Overflow
Using an 8-bit integer wraparound to satisfy a numeric check.
1337 Local CTF: BASIT — Apache Traversal → Encrypted ZIP → Nested Stego
Following a PCAP attack chain from Apache CVE-2021-41773 to an encrypted archive and hidden image payload.
1337 Local CTF: big brother — Reverse Engineering Hidden Session Logic
Recovering a hidden rev flag from the challenge binary and confirming submission.
1337 Local CTF: Encrypted Callback — TLS 1.3 Decryption → PowerShell Malware
Decrypting TLS 1.3 traffic with sslkeylog.log, unpacking PowerShell stages, and reversing exfiltrated telemetry.
1337 Local CTF: holy bytes hh — Timing Side Channel
Extracting a flag bit-by-bit from a deliberate timing leak in a Python loop.
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CTF writeups and security research. New posts coming soon.
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