Semtex4

Ptrace your way

Pass prints the password for the level you are on. Try to make it print the next level's password. This time it is not so easy:

/semtex/semtex4: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.6.15, stripped

Tip : - Pass uses geteuid() to get its information. - Read man ptrace