[TECH] Handmade anti theft system

Posted on Tue 14 April 2020 in Tech, Hardware, Setup • Tagged with lenovo, x1c6, wwan, em7455, initramfs

Following my last post I decided to play a bit more with 4G networks and the oportunities of having it on a laptop.

During those Easter's holiday I finally took the time to prototype a small project I had in mind for a long time, I wanted to design an …

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[TECH] Lenovo X1C6 WWAN

Posted on Wed 09 January 2019 in Tech, Hardware, Setup • Tagged with lenovo, x1c6, wwan, em7455

Roughly one year ago, I had to install a WWAN modem inside a Lenovo X1 5th generation. Due to the price Lenovo was selling the modem, we tried to install a generic, cheaper one. We struggled a lot (BIOS Whitelisting, AT port, ...) but we eventually managed to make it work …

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[WU] Switch's challs 0x1 - reverse.me

Posted on Wed 05 December 2018 in Reverse • Tagged with reverse, cutter, wu

This is a small 32 bits reverse challenge made by Switch, available here.

When run, this binary ask the user an input, and seems to crash right after that (whatever our input is). After loading the binary in Cutter, we can spot in the import table some well known curl …

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Static Analysis of OJ's Police Quest

Posted on Mon 03 December 2018 in Reverse • Tagged with reverse, ida, exploit

Roughly one week ago (end of November 2018), OJ published a CTF challenge, the goal (rather simple) is to exploit this binary. I'm trying to write those article while I reverse/exploit this game. In this first article I will focus on static analysis to gather information that will be …

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The return

Posted on Fri 13 July 2018 in Announcement

This old blog was removed due to outdated content. The goal is to start publishing security related articles (network, reversing, malware analysis) as soon as possible.

For any information, you can contact me on Twitter or by email at ex0ns [at] ex0ns.me

See you soon

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