HITCON CTF 2014 - sha1lcode

Posted on Mon 18 August 2014 in posts • Tagged with ctf, hitconctf2014Leave a comment

Crosspost: http://krebsco.de/writeups/sha1lcode.html

The name of the challange sha1lcode already hints on the overall idea - writing shellcode that has something todo with sha1 hashes.

So let's have a first look at the provided binary file:

$ file sha1lcode-5b43cc13b0fb249726e0ae175dbef3fe
sha1lcode-5b43cc13b0fb249726e0ae175dbef3fe: ELF 64-bit ...
Continue reading