ImaginaryCTF Challenges

ImaginaryCTF 24/01/2023. 100 points. DSA. LCG. Modular system of equations

ImaginaryCTF 21/01/2023. 125 points. DSA. Hidden Number Problem. LLL lattice reduction

ImaginaryCTF 12/01/2023. 50 points. 64-bit binary. Buffer Overflow

ImaginaryCTF 06/01/2023. 50 points. DSA. Modular arithmetic

ImaginaryCTF 02/01/2023. 50 points. Base64 encoding

ImaginaryCTF 21/12/2022. 75 points. Seven-segment display. Hexadecimal and Base64 encodings

ImaginaryCTF 12/12/2022. 50 points. DNS

ImaginaryCTF 08/12/2022. 100 points. RSA. Cipolla’s Algorithm

ImaginaryCTF 28/11/2022. 75 points. RSA. Greatest Common Divisor. Bad PRNG

ImaginaryCTF 20/11/2022. 90 points. RSA. Common modulus attack

ImaginaryCTF 17/11/2022. 75 points. 64-bit binary. Buffer Overflow. Redirecting program execution

ImaginaryCTF 09/11/2022. 50 points. Python code deobfuscation. XOR cipher

ImaginaryCTF 08/11/2022. 50 points. HTTPs certificate

ImaginaryCTF 04/11/2022. 50 points. robots.txt

ImaginaryCTF 03/11/2022. 50 points. Inspect HTML code

ImaginaryCTF 28/09/2022. 50 points. API docs

ImaginaryCTF 15/09/2022. 50 points. System of linear equations

ImaginaryCTF 14/08/2022. 50 points. Inverse sine of a number

ImaginaryCTF 12/09/2022. 75 points. MD5 hash. Prototype Pollution

ImaginaryCTF 07/09/2022. 75 points. RSA. Fermat’s Little Theorem

ImaginaryCTF 06/09/2022. 50 points. 64-bit binary. Arbitrary write primitive

ImaginaryCTF 05/09/2022. 50 points. 64-bit binary. Arbitrary read primitive

ImaginaryCTF 04/09/2022. 90 points. DSA. Abusing special values

ImaginaryCTF 03/09/2022. 50 points. Modular arithmetic. Reverse encryption algorithm

ImaginaryCTF 02/09/2022. 50 points. XOR cipher

ImaginaryCTF 10/08/2022. 75 points. RSA. Common modulus attack

ImaginaryCTF 09/08/2022. 50 points. AES. Weak password. Brute force

ImaginaryCTF 08/08/2022. 75 points. 64-bit binary. Format String vulnerability. GOT overwrite

ImaginaryCTF 07/08/2022. 75 points. RSA. PRNG seed. CRT

ImaginaryCTF 05/08/2022. 50 points. RSA. Large modulus and short exponent

ImaginaryCTF 04/08/2022. 30 points. Cosine of a number with many decimal places

ImaginaryCTF 03/08/2022. 30 points. Unicode characters

ImaginaryCTF 02/08/2022. 30 points. Cosine of a number

ImaginaryCTF 14/07/2022. 75 points. RSA. Wiener’s attack

ImaginaryCTF 13/07/2022. 50 points. Server-Side Template Injection. Flask console

ImaginaryCTF 12/07/2022. 75 points. XOR cipher

ImaginaryCTF 11/07/2022. 75 points. 64-bit binary. Buffer Overflow. ret2libc. Bypass ASLR and canary

ImaginaryCTF 07/07/2022. 50 points. XOR cipher with rotating key

ImaginaryCTF 06/07/2022. 50 points. Python pickle

ImaginaryCTF 05/07/2022. 50 points. RSA. Greatest Common Divisor

ImaginaryCTF 04/07/2022. 75 points. ZIP archive. macOS (.DS_Store)

ImaginaryCTF 03/07/2022. 30 points. Numerical base