007 - DC 28 CTF Winners: A*0*E with Tianyi, Gengming, Hui Shin, and silver

Youtube Video of podcast Shownotes and Links In this extra-special episode of CTF Radiooo, adamd and Zardus host the WINNERS of DC 28 CTF: A*0*E. From A*0*E we’re joined by Captain Gengming aka dmxcsnsbh, Vice-Captain Hui Shin aka septyem, Founder Tianyi aka Jackyxty, and DevOps silver! We discuss how everyone got into CTFs, the history of A*0*E (the short version is A*0*E = EEE ∪ AAA ∪ 0ops ∪ ******), DC 28 CTF, DC 26 madness (on adamd and Zardus’ side, including social engineering a parking spot), and how to succeed at CTFs. Silver’s amazing diagram of their networking setup: +---------------------------------------------------------------------------+ | | | >Other players in our team< | | | +-----------------+----------------------------------+----------------------+ | | | | | OpenVPN | OpenVPN | | The `dc28-redir-controller` +--------+------+ +------+--------+ is deployed here | | | | | VPN Endpoint | | VPN Endpoint | | | for CHN users | | for USA users | | | | | | v +-------+-------+ +-------+-------+ | | +---------------------------+ +--------------------+ | bandwidth and ACL limited! | | | | | | save some money ;) | | Jumpbox, config copied +-----+ OOO's WG endpoint | | | | +-----+ from OOO's machine | | | | | | | | | | | +---------------------------------+ | v | | +---------------------------+ +--------------------+ | | +-----+-----+ +-----+-----+ | | CPU-intensive applications | | | QoS Promised | | | | since EPYC servers are only +------+ Gateway +------------------------+ Gateway +------+ +------------------------------------+ | available in CHN available zone | | China | MPLS VPN? not sure. | U.S West | | | | | | | 110-130ms, <0.1% loss | +------------+ Latency-aware programs | +---------------------------------+ +-----------+ +-----------+ | & | | Traffic-heavy programs (like pcap) | | Reduce costs under the ocean | | | +------------------------------------+ - All connections are using WireGuard unless specified. - Netdata is installed on all machines so we can do remote telemetry and receive alarms. Links A*0*E redirection controller 0CTF/TCTF finals (which was last month, sorry the recording happened before)

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