Offical URL: https://ctf.bi0s.in/

bi0sCTF is brought to you by team bi0s of Amrita Vishwa Vidyapeetham, Amritapuri.

Prizes:
1st place - $1500
2nd place - $1000
3rd place - $500

+ Writeup prizes!

CTF events

NameWeight
bi0sCTF 2025 95.79
bi0sCTF 202479.83
bi0sCTF 202254.81
InCTF 202170.41
InCTF 202053.95
InCTF 201937.00
InCTF 201825.00
InCTF 201725.00
InCTF 2015 Quals0.00
bi0sCTF 20120.00
Related tags: web pwn xss php crypto stego rop sqli forensics android python pcap xor algo rsa z3 bruteforce javascript debugging arm java js vm storage exploitation misc otp pwnable re mobile sql exploit stegano ppc admin steganography things scripting security programming metasploit c c++ reverse engineering buffer overflow attacks hacking math nosql sandbox nodejs coding nothing networking prng mongodb engineering not malware pentest bash windows unix stuff network pentesting guessing carving asm libc html network hacking linux recon wireshark analysis app sqlinjection lfi fuzzing networks mysql pyjail morse exceptions mitm css caesar sleeping ssl got snow servers learning systems nmap kernel maths exploiting gopher enumeration sysadmin good binwalk network analyze volatility hash radare2 audio music production developing bof pwning design ollydbg signal analyzing shellcode pwntools srop wiener deobfuscation hashcat cloud disk machine gdb cookies algorithm 3d redirect png curl jit logs tcp golang sqlite securtity escape server electronics docker usb hex md5 infrastructure systems programming angr pdf encoding tls cypher rce flash cryptanalysis vigenere qrcode audio engineering filmmaking cgi cesar zip heap lockpicking incidentresponse gamehacking crt browser art socialengineering string-format formatstring video sniffing investigation memdump oracle lsb scanning ph fo c reverse heap-overflow reversing mail rev easy collision forensic binary mp3 antidebug ctf recovery pcapng nas command_injection stack common-factor ecc coppersmith idapython ltrace firefox gimp dump memory online local-storage eat cryptography-rsa reverse_engineering writeups osint ssti quantum off-by-one revesing ecdsa guess bypass hex2raw binaryexploitation robots dotcode jwt assembler scapy blindsql format-string mbr autopsy ethereum blockchain qemu gameboy backdoor fmtstr script python3 ssrf brute-force crlfinjection stack_overflow chrome v8 slack fastbin steghide fastbindup jemalloc phantomjs discrete-log babypwn lsb-oracle one_gadget csp-bypass react cssinjection keylogger lfsr unicorn poisoning ransomware tcache cache ftp ctf2018 dlp nginx unsortedbin data-structure tar commandinjection netbsd file_signature cca2 telnet ephemeral wasm history houseofforce memory_dump polynomial symbolic_execution arm32 lego lora mindstorm privesc binary-search spoofing adversarial ellipticcurve dom-clobbering uut portknocking xsleaks dropper aes-128 xoroshiro128+ spidermonkey miband prototype-pollution crlf deobfuscating sed hard caesar_shift cron reverse_shell checkin checkout fini_array http_request_smuggling gps fmtstring redos graphql regex-injection inctf psp ml registry prototypepollution volatiltiy perfect libc-2.31 ctf_writeup bls xs-leak medium mission write-what-where beginner_friendly mongoose escapeshellcmd json_interoperability safari teamviewer browser-forensics windows-forensics-analysis windows-timeline anydesk android-forensics google-apps aleapp cve-2017-15804 secp256k1 adsfdgfg adsfdf adsfdgf adsfdfadsfdf adsfdffsdgf adsdadsfdf adsdfsfdf adsfdfsfdf assd adsfdfsdgf dgffsd dsfdffsdgf sadsdfadsfd czscfsdfcdf adsdfsd asdsd dfir pandas password-recovery memory-forensics incident-response windows-forensics malware-analysis blockchain-forensics azr43lkn1ght cache-probing azfr43lkn1ght malwarenalaysis windowsforensics threathunting mameoryforensics stealer fileforensics browserforensics ransomware-investigation memoryforensics ransomware-analysis