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GRE over IPSec in Cisco IOS

Cisco GRE over IPSEC In the following is a sample configuration for GRE/IPSEC in Cisco IOS devices. you can tailor this to your needs (changing encryption algorithms, IP addresses etc), just r...

Cisco IOS and StrongSWAN IPSEC VPN

In this blog post we will cover IPSEC tunnel between Linux StrongSWAN and Cisco IOS. The strongSWAN config file can copied exactly as is to another server with the IP of Cisco Router and the tun...

Exploring from User-Mode to Kernel-Mode

There were times when I want to trace instructions from User Mode and continue tracing it into Kernel mode to reverse Windows’s internal implementation with my own supplied parameters from User M...

Defeat Malware's Dynamic API Loading

There are thousands of ways which makes malwares resist against static dissambling and static analysing. One of the known ways to circumvent against suspicious API blocking or analysing staticall...

Lack of rechecking permissions in Android

Yesterday me and one of my friends were working on an Android Penetration testing project. After testing some kinds of exploit then we somehow get root privilege with some kinds of limitations. I...

Import Address Table (IAT) in action

Did you ever think about how different dll files with different versions and obviously with different addresses of functions work perfectly together ? The answer is Import Address Table (IAT). I...

Bind9 chroot on debian 8

From Wikipedia: BIND, or named, is the most widely used Domain Name System (DNS) software on the Internet. On Unix-like operating systems it is the de facto standard. As you know chrooting ...

Change User-Mode application's virtual address through Kernel Debugging

Well, it’s somehow an odd topic but sometimes it could be really helpful in some situations. So what are the situations? Imagine sometimes you need to access windows stuffs that aren’t availabl...

How to get every detail about SSDT , GDT , IDT in a blink of an eye

In a few days ago I was looking for something to show me the SSDT and GDT (Which is really important in malware analyzing because most of rootkits are interested in hooking and changing this stuf...

Useful Configs for Squid3 Cache

Hi everyone! After searching the web so many times and testing different configurations of Squid, I have found these minimal working configs which you can use to achieve the features you want fr...