writeup
2024 Business CTF - Vault of Hope: Recruitment
Smart contract challenge requiring multi-step validation including hacking skills, stealth, engineering, and demolition expertise
#htb
#ctf
#blockchain
+2 writeup
2024 Cyber Apocalypse: Russian Roulette
Exploit a weak Diffie-Hellman key exchange with small prime modulus
#htb
#ctf
#blockchain
+3 writeup
2023 Business CTF: 2244 Elections
Exploit a backdoored e-voting smart contract to manipulate election results
#htb
#ctf
#blockchain
+2 writeup
2023 Business CTF: Confidentiality
Forge NFT signatures to gain access to confidential Board of Arodor documents
#htb
#ctf
#blockchain
+3 writeup
2023 Business CTF: Funds Secured
Exploit a multi-signature wallet to steal crowdfunding campaign funds
#htb
#ctf
#blockchain
+3 writeup
2023 Business CTF: Paid Contr-actor
Sign a contract with a simple condition to complete military enrollment paperwork
#htb
#ctf
#blockchain
+2 writeup
2023 Business CTF: I'm gRoot
Forge Merkle tree signatures to detect a blockchain backdoor
#htb
#ctf
#crypto
+3