http://s.eresi-project.org/inc/articles/p61-0x08_The_Cerberus_ELF_interface.txt

 $ ./etreladd.esh

         Welcome to The ELF shell 0.5b9 .::.

         .::. This software is under the General Public License
         .::. Please visit http://www.gnu.org to know about Free Software

~load /usr/sbin/sshd
  [*] New object /usr/sbin/sshd loaded on Fri Jul 25 04:43:58 2003

~load mycrypt.o
  [*] New object mycrypt.o loaded on Fri Jul 25 04:43:58 2003

~reladd 1 2
  [*] ET_REL mycrypt.o injected succesfully in ET_EXEC /usr/sbin/sshd

~set 1.got[crypt] mycrypt
  [*] Field set succesfully
也可以用redir old new
~save sshd.new
  [*] Object sshd.new save successfully

~quit
[*] Unloading object 1 (mycrypt.o)  
[*] Unloading object 2 (/usr/sbin/sshd) *