Software engineer · Security researcher
000%
// Security research
// Events
Event · Sep 2026
Forensics, reverse engineering, cryptography and web challenges solved as Team Megnetar — from ICMP exfiltration and Game Boy ROMs to SHA-1 collisions and lattice attacks.
Event
Finished 4th in the Capture the Flag and 2nd in the Bug Bounty challenge. Writeups were not published for this event.
// 7 writeups
Event
CryptoBSides Mumbai CTF7
Ten noisy multiples of a secret prime. Plain GCD fails, but the Approximate Common Divisor problem falls to lattice reduction.
Event
CryptoBSides Mumbai CTF7
A verifier that wanted two different files with the same digest — solved with the public SHAttered SHA-1 collision, then used to decrypt the flag.
Event
CryptoBSides Mumbai CTF7
A Diffie–Hellman variant built on Chebyshev polynomials over a prime field, reduced to a discrete log and solved with Pohlig–Hellman.
Event
Reverse EngineeringBSides Mumbai CTF7
A Game Boy ROM whose emulator output was deliberately misleading — the answer was in a XOR-encoded region of the ROM itself.
Event
Reverse EngineeringBSides Mumbai CTF7
A hex dump that turned out to be nested archives, then a vault binary whose flag was split across XOR, byte-table and AES-256-CBC stages.
Event
ForensicsBSides Mumbai CTF7
A "leaked game files" archive of near-identical JPEGs where the message was hidden in the sequence and repetition of the images themselves.
Event
ForensicsBSides Mumbai CTF7
A packet capture blamed on slow Wi-Fi was really a covert channel — the flag was smuggled out in fragments inside ICMP echo payloads.
