May
01

Google CTF – Jekyll (Crypto)

Can you access the admin page? You can look at the crypto here. source.py Summary: finding a preimage for a simple 64-bit ARX-based hash.

Feb
13

IFSF CTF Small Challenges (#4, #5, #6, #14, #15)

Contents #4 ER #5 Change #6 Call me #14 Seek me #15 Embedded docs

Mar
08

Codegate CTF 2011 Issue 500 (bootsector)

Find a key. [link to submit form] binary $ file challenge.bin challenge.bin: x86 boot sector, code offset 0xc0 Summary: bootsector with password check, bruteforcing 2 bytes hash.

Mar
07

Codegate CTF 2011 Crypto300 Writeup

Description: we are investigating an illegal online gambling site. To find any evidence to support for illegal gambling, we must access the oracle database with administrator privileges. The suspect says that he does not know the administrator password, but we know for sure that he is lying. The password is estimated to be longer than… Continue reading »