code hacking, zen coding

Tag: infoleak

SIGINT 2013 CTF – Pwning 300 – tr0llsex Write-up (SCTP challenge)

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SIGINT 2013 CTF – Pwning 300 – tr0llsex Write-up (SCTP challenge)

server: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24, BuildID[sha1]=0x66661e417e6b4037e552b904c755f2e4a7ecf934, stripped tr0llsex was a Linux ELF 64-bit binary from the SIGINT 2013 CTF’s Pwning category. It’s a fun little easy challenge with a twist: it’s using SCTP protocol for the network transport […]

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CSAW 2012 CTF – Exploit 300 Writeup

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CSAW 2012 CTF – Exploit 300 Writeup

We have an interesting binary that uses signals to call functions. The most interesting handler is the user input handler: (function names are my own, binary was stripped) .text:080488C8 inputHandler    proc near               ; DATA XREF: sub_8048A3D+2Bo .text:080488C8 .text:080488C8 s       […]

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