32C3 CTF - PICA

PICACHUUUUUUUUU!!!1!
If you switch to VTY2, you can log in as root without a password.
Note: Please use the supplied qemu. I’m not sure if everything works if you use a different version. The qemu was compiled under Ubuntu 14.04.

Reversing 題，給了 qemu-system-x86_64 跟 image: bzImage-initramfs-qemux86-64.bin ，另外還有一包 BIOS 相關的檔案

1. Boot Up

用 qemu 跑起 image ，開機完後會要求輸入 Flag ，用 CTRL + ALT + F3 切換到 VTY2，會出現有皮卡丘的登入畫面:

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PICA PICA PICA PICA PICA
PICA login:

Trend Micro CTF 2015 Final - Binary 2

有點煩人的一題，在二天時出現，比賽時在 Binary1 時間截止後才開始看這題，
可惜最後還是沒能在時間內完成

0CTF 2015 Quals - r0ops

allways r0ops !

只值 150 分的逆向題，卻在上面浪費了不少時間，覺得很挫敗…

Boston Key Party CTF 2014 - VM

this vm needs a license to run. we don’t have the license!
http://bostonkeyparty.net/challenges/vm-2fbed3f5a894d56be6b2ba328f9e2411

這幾天有點時間，解了幾題去年 Boston Key Party CTF 的題目，做個紀錄

No cON Name CTF Quals 2014 - eXPLicit

Make me eXPLode! Hint: maybe you want to give a look at the binary…
https://ctf.noconname.org/chdownloads/explicit
Url: 88.87.208.163:7070
Points: 500

題目是個猜數字遊戲:

$ nc 88.87.208.163 7070
Welcome to Guess The Number Online!

Pick a number between 0 and 20: