Using DBI for solving Reverse Engineering 101 – Newbie Contest from eLearnSecurity

Introduction Last weekend I had some time so I wanted to have a look at a reversing challenge which you can find here: Reverse Engineering 101 Contest Steps Get the exe to be hacked Break it open and start exploring. The only rule for the challenge is that it has to be solved by […]

Reversing 101 – Solving a protection scheme

In this post, we’ll look at an application reversing challenge from HTS ( resembling a real-life protection scheme.
Put simple, the program creates a key for your username, and compares it to the one you enter.
The goal of the HTS challenge is to create a key generator, but I just want to demonstrate how to retrieve the password.
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Many roads to IAT

A few days ago a friend approached me and asked how he could see the import address table under immunity debugger and if this could be done using the command line.

I figured this would be a good time to take a look at what the IAT is, how we can list the IAT and what common reversing hurdles could be with regards to the IAT.
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Codegate 2011 CTF – Binary200 – Anti Debugging Techniques Explained


Again I stumbled upon a nice reverse-me, binary200 from the Codegate 2011 CTF.
And again there are some really interesting anti-debugging tricks implemented, so I decided to produce another video.
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Anti-debugging tricks revealed – Defcon CTF Qualifications 2009: Bin300 Analysis

A while ago I stumbled upon an awesome write-up of a very nice CTF challenge created by sapheads: I love cartoons, and I love reversing, so I decided to play a little bit with that binary (b300.exe) which was a lot of fun. Because some interesting anti-debugging tricks were implemented into the binary…
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The Honeypot Incident – How strong is your UF (Reversing FU)

Interested in capturing, documenting and analyzing scans and malicious activity, Corelan Team decided to set up a honeypot and put it online. In the first week of december 2010, Obzy built a machine (default Windows XP SP3 installation, no patches, firewall turned off), named it “EGYPTS-AIRWAYS”, set up a honeypot + some other monitoring tools, and connected it to the internet.
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