You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
Transform vmlinuz into a fully debuggable vmlinux that can be used with /proc/kcore
Use cases
This tools makes it possible to use /proc/kcore for debugging or forensics analysis
without having to recompile your kernel with symbols, or download a special debug
kernel image. This software is actually from a much larger project called 'Kernel Voodoo'
which is still private. Kernel Voodoo uses 'kdress' to create a vmlinux that can be
used as a way to easily navigate kernel memory by symbol and also have a valid signature to
compare code against from /proc/kcore.
Example
ryan@elfmaster:~/kdress$ sudo ./kdress vmlinuz-`uname -r` vmlinux /boot/System.map-`uname -r`
[+] vmlinux has been successfully extracted
[+] vmlinux has been successfully instrumented with a complete ELF symbol table.
ryan@elfmaster:~/kdress$ sudo readelf -s vmlinux | grep sys_call_table
33268: ffffffff81801400 4368 OBJECT GLOBAL DEFAULT 4 sys_call_table
33421: ffffffff81809ca0 2928 OBJECT GLOBAL DEFAULT 4 ia32_sys_call_table
About
Transform vmlinuz into a fully debuggable vmlinux that can be used with /proc/kcore