Sometimes, there is a time when we forgot password to enter windows or linux distro. If this happen, don’t worry, we still can use this piece of freeware to bypass password. The program is Kon-Boot. With Kon-boot we can bypass login password for Windows (Xp,vista,7 even server), Gentoo, Ubuntu, Fedora and also Debian.

Kon-Boot is an prototype piece of software which allows to change contents of a linux kernel (and now Windows kernel also!!!) on the fly (while booting). In the current compilation state it allows to log into a linux system as ‘root’ user without typing the correct password or to elevate privileges from current user to root. For Windows systems it allows to enter any password protected profile without any knowledge of the password. Entire Kon-Boot was written in pure x86 assembly, using old grandpa-geezer TASM 4.0.

Additional notes:

• Kon-Boot was designed to work on X86-32 architectures only.
• This utility was not designed to work with USB sticks, however you can try some unofficial methods to boot Kon-Boot from USB, check the USB tutorial on IronGeek or Raymond blog post.

Tested Windows versions

• Windows Server 2008 Standard SP2 (v.275)
• Windows Vista Business SP0
• Windows Vista Ultimate SP1
• Windows Vista Ultimate SP0
• Windows Server 2003 Enterprise
• Windows XP
• Windows XP SP1
• Windows XP SP2
• Windows XP SP3
• Windows 7

No special usage instructions are required for Windows users, just boot from Kon-Boot CD/Floppy, select your profile and put any password you want. You lost your password? Now it doesnt matter at all

Tested Linux version

• Gentoo 2.6.24-gentoo-r5
• Ubuntu 2.6.24.3-debug
• Debian 2.6.18-6-6861
• Fedora 2.6.25.9-76.fc9.i6862

Interesting to try ? Download Kon-Boot Here