Different people see different me.<188.8.131.52:12321>
But I am always myself.
Make the output of your program exactly the same as your source code.
All 5 correct required to get this flag (Only need 3 correct for BabyPolyQuine)
gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2
ruby 1.9.3p484 (2013-11-22 revision 43786) [x86_64-linux]
This is perl 5, version 18, subversion 2 (v5.18.2) built for x86_64-linux-gnu-thread-multi
Talentyange gives lots of tedious apks and you know how bad he is now. Let’s try some interesting geography knowledge.
nc 184.108.40.206 29995 / nc 220.127.116.11 29995
Code400 gave us a python script
Similar with Pwn200, Pwn400 gave us a binary file, but no libc.so. Open it with IDA Pro and analyze it, we found some information:
SCTF is a CTF contest hold by XCTF ( seems like a Chinese version’s CTFtime.org ). Teaming up with my labmates, we have a lot of fun solving the challenges, and scored 2161 pts with the final rank 13/659.
Description: Find flag in this file
Description: Connect here and find the flag:
nc asis-ctf.ir 12435
After we connect to the server, it show us the following message:
Both challenges are kind of easy, so I decide to put their writeups together.
First the challenge gave us a binary file (ELF for Intel-386). But we can’t execute it, cause we don’t have the required shared library “libchallengeresponse.so”. So we will have to launch IDA Pro to see what’s going on within the program.
CSAW CTF 2014 is the second CTF contest I’ve attended ( the first one was the HITCON CTF 2014 ) . Since this is the first time I’ve actually solved something in the contest, I decide to post my first own writeup .