reeekeeeeee Web (200 pts) ------------- The Plague seems obsessed with internet memes, though we don't yet know why. Perhaps there is a clue to what he's up to on this server (epilepsy warning). If only you could break in.... Here is some of the source.
wheeeee Crypto (375 pts) ---------------- Although it seems like The Plague's messaging service is secure, there are bound to be bugs in any 20th century crypto system. We've recovered a version of the block cipher The Plague implemented. Use their online encryptor tool, at 220.127.116.11:8193, to break the cipher and figure out Plague's secret plans. NOTE: When the service sends you a hex-encoded string, respond with a hex-encoded string.
ezhp Pwnables (200 pts) ------------------- Luckily when you travel back in time, you still get to use all your knowledge from the present. With that knowledge in hand, breaking into this service (at 18.104.22.168:9174) owned by The Plague shouldn't be hard at all.
To set the picture, let’s identify the binary
:::bash izsh@box:~$ file ezhp ezhp: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24, BuildID[sha1]=0x5fa5bd76db306497b549ea3b0466cd9e9afa2705, stripped izsh@box:~$ readelf -l ezhp | grep STACK GNU_STACK 0x000000 0x00000000 0x00000000 0x00000 0x00000 RWE 0x4
__nightmares__ Pwning (375 pts) ------------------- The Plague is building an army of evil hackers, and they are starting off by teaching them python with this simple service. Maybe if you could get full access to this system, at 22.214.171.124:9990, you would be able to find out more about The Plague's evil plans.
This server simply evaluates any Python expression provided - with an attempt at sandboxing it.