---- title ----
Return of remote debugging of a micro computer

---- information ----
The server is running on GDB simulator with special patches.

* Connect to the server.

  $ echo '$g#67+' | nc micro.pwn.seccon.jp 10000

  A long connection is disconnected automatically. (several minutes)
  A request of a connection in a short interval is ignored. (several seconds)

* Read "word.txt" on current directory.

  Try SOP(Step-Oriented Programming).

Reference:

* About SOP

  https://www.slideshare.net/kozossakai/possibility-of-arbitrary-code-execution-by-steporiented-programming

* Assembly samples for many architectures

  http://kozos.jp/books/asm/cross-gcc494-v1.0.zip

  See the assembly samples.

  $ unzip cross-gcc494-v1.0.zip
  $ cd cross-gcc494/sample
  $ ls *.d

  See the sample programs running on GDB simulator.

  $ cd cross-gcc494/exec
  $ ls *.d

* Files of the old server using SOP to solve it
  (at SECCON2016 final competition)

  - Information for the server

    http://kozos.jp/seccon/2016/final/gdb-server/index.html

  - Files of the server

    http://kozos.jp/seccon/2016/final/gdb-server/server.zip

  - Files for answer

    http://kozos.jp/seccon/2016/final/gdb-server/answer.zip