Low-level adventures

                
    RE
The devil entered the stage!
            This is a write-up for solving the devils-swapper RE challenge.‌‌ It was mostly intended for my personal archive but since it may be interesting to all of you. This especially
        
        0xricksanchez
        
    3 Feb 2021
    ·
    17 min read
    
    Hardware
LinkSys EA6100 AC1200 - Part 1 - PCB reversing
            It has been a while since I did some hardware hacking and this time I want to review the basics. The LinkSys EA6100 router intrigued me due to the fact
        
        0xricksanchez
        
    11 Jan 2021
    ·
    7 min read
    
    Hardware
Breaking the D-Link DIR3060 Firmware Encryption - Static analysis of the decryption routine - Part 2.2
            Welcome back to part 2.2 of this series! If you have not yet checked out part 1 or part 2.1 please do so first as they highlight important
        
        0xricksanchez
        
    15 Jul 2020
    ·
    29 min read
    
    Hardware
Breaking the D-Link DIR3060 Firmware Encryption - Static analysis of the decryption routine - Part 2.1
            Welcome back to part 2 of this series! If you have not checked out part 1 yet please do so first as it highlights important reconnaissance steps! So let us
        
        0xricksanchez
        
    14 Jul 2020
    ·
    14 min read
    
    Hardware
Breaking the D-Link DIR3060 Firmware Encryption - Recon - Part 1
            Recently we came across some firmware samples from D-Link routers that we were unable to unpack properly. Luckily we got our hands on an older, cheaper but similar device (DIR882)
        
        0xricksanchez
        
    13 Jul 2020
    ·
    9 min read
    
    RE
What's a bitbang?
            Note: This is a re-upload of an old write-up. This is another write-up from an interesting little challenge. The original forum post about it can be found here.  To get
        
        0xricksanchez
        
    12 Jul 2020
    ·
    7 min read
    
    RE
Welcome to the Poly Bomb 💣
            Note: Re-write/Re-upload due to dead links This write up are my thoughts and steps to statically analyze a given unknown binary. I want to understand the binary to a
        
        0xricksanchez
        
    10 Jul 2020
    ·
    10 min read
    
    RE
Reversing and Exploiting Dr. von Noizemans Nuclear Bomb
            Note: Re-upload due to dead links :)  Yo! Life kept me more than busy, but now I've got a little more time on my hands. I decided to do a write
        
        0xricksanchez
        
    10 Jul 2020
    ·
    12 min read
    
    Exploitation
A very brief introduction to Control Flow Graphs and  Control Flow Integrity
            Note: Re-Upload It has been a longer time since I tackled the exploit mitigations on Linux. Nevertheless I felt like I should at least cover control flow graphs and control
        
        0xricksanchez
        
    5 May 2020
    ·
    7 min read
    
    Exploitation
Exploit Mitigation Techniques - Part 2 -  Stack Canaries
            PrefaceHey there! After quite some time the second part will be finally published :) ! Sorry for the delay, real life can be overwhelming.. Last time I have introduced this series by
        
        0xricksanchez
        
    4 May 2020
    ·
    18 min read
    
    Exploitation
Exploit Mitigation Techniques - Part 3 - Address Space Layout Randomization (ASLR)
            PrefaceHey there! I'm finally ready to present you the third installment of the series exploit mitigation techniques. The last two times we talked about Data Execution Prevention and Stack Canaries.
        
        0xricksanchez
        
    4 May 2020
    ·
    27 min read
    
    Exploitation
Exploit Mitigation Techniques - Part 1 -  Data Execution Prevention (DEP)
            PrefaceWelcome to a new series about GNU/Linux exploit mitigation techniques. I want to shift the focus to the bypassed techniques to create a series about currently deployed approaches. Afterwards,
        
        0xricksanchez
        
    4 May 2020
    ·
    12 min read
    
    General

            Dissecting and exploiting ELF files
        
        0xricksanchez
        
    4 May 2020
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    27 min read
    
    Fuzzing

            Fuzzing projects with american fuzzy lop (AFL)
        
        0xricksanchez
        
    4 May 2020
    ·
    10 min read
    
    Exploitation

            An introduction to printer exploitation
        
        0xricksanchez
        
    4 May 2020
    ·
    9 min read