Insomnihack 2016 microwave writeup

I participated to the 2016 Insomni'hack CTF with my team Fourchette Bombe. It was a really cool CTF with lots of cool challenges. We finished on 8th place this year. So here is my writeup for one of the pwnable challenges I solved. We are given a x86_64 ELF and …

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Insomnihack 2016 smartstove writeup

Here is another writeup for a pwnable challenge I solved during the Insomni'hack CTF. We are given a x86_64 ELF, so as usual we'll check the binary protections first with checksec:

Arch:     amd64-64-little
RELRO:    Partial RELRO
Stack:    No canary found
NX:       NX enabled
PIE:      No PIE

OK, it's a ELF64 …

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Ghost in the shellcode cloudfs writeup 2015

Category: Forensics Points: 200 Description:Find the key! (File)

The file we were given if a pcapng file. To be able to read'it with scapy we need to convert it to pcap. The easiest way is to use tcpdump as so:

tcpdump -r cloudfs-31c938df3531611b82fddf0685784a2b67373305ec689015f193a555b756beb2 -w cloudfs.pcap

Use scapy to …

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