Play with this amazing calculator: calc.challenges.polictf.it:4000 Summary: Scheme eval
November 2012 archive
Nov 19
PoliCTF 2012 Crypto 500
Hensel and Gretel are looking for their new house, but the twisted seller who sold it to them decided to provide the coordinates to their new love nest only after ensuring that the couple is Smart enough to earn them. Thus, the seller provides them with the following map and leaves Hensel and Gretel to …
Nov 19
PoliCTF 2012 Crypto 200
Nov 19
PoliCTF 2012 Crypto 100
Since I needed to sign a document I thought about doing it with a Chinese paintbrush… Too bad my hand is not that steady, so just in case, I re-signed it with a common pen. Sadly I keep being forgetful, so I actually forgot where I left the two halves of the sigil I used …
Nov 13
Dobbertin Challenge 2012
The Dobbertin Challenge is issued every two years since 2006, in honor and memory of Prof. Hans Dobbertin. http://cryptochallenge.nds.rub.de:50080/ A simple JSON Web Service is provided, which processes PIN codes of users. A user can send his encrypted PIN to the Web Service, which decrypts and stores the PIN. The Web Service allows to use …
Nov 04
Hack.lu 2012 CTF Challenge #12 (500)
The famous zombie researcher “Donn Beach” almost created an immunization against the dipsomanie virus. This severe disease leads to the inability to defend against Zombies, later causes a complete loss of memory and finally turns you into one of them. Inexplicably Donn forgot where he put the license key for his centrifuge. Provide him a …