|
ATTACK POINTS
- Files named "word.txt" are located in
all servers in the program's current directory.
- You can obtain an attack keyword by reading "word.txt".
- Submit the attack keyword to the score board. (ATTACK POINTS)
DEFENSE POINTS
- Files named "flag.txt" are located in
all servers in the program's current directory.
- Write your team's defense keyword to "flag.txt".
- But, you can write "flag.txt" in append mode only. (cannot truncate)
- The keyword wrote in "flag.txt" is registered with the
flag page in realtime. (DEFENSE POINTS)
INFORMATION
- The servers are running on qemu-2.10.2
with special system call (readc/writec) patches.
- This system is based on Linux.
DOWNLOAD
LIMIT OF INPUT SIZE
- The server gets input until the limit of size. (several kilo bytes)
- A long connection is disconnected automatically. (several seconds)
- A request of a connection in a short interval is ignored. (several seconds)
|