Define of backdoor string ( DBACKDOOR_SIGNATURE & DXMLSET_BACKDOOR_USER_AGENT) at DLink DI-524 UP GPL source code http://tsd.dlink.com.tw/downloads2008list.asp?t=1&OS=GPL&SourceType=download GPL_Di524up\user\xsupplicant-1.2.2\config.log

gistfile1.txt

configure:2243: /opt/toolchain_mips_nofpu/bin/mips-linux-gcc  -Os  -mips1 -msoft-float  -fPIC -Dlinux -D__linux__ -Dunix -DEMBED -I/opt/20051017/RealTek865x_062/include  -nostdinc -I/opt/20051017/RealTek865x_062/lib/uClibc/include -I/opt/20051017/RealTek865x_062/lib/libcrypt -I/opt/20051017/RealTek865x_062/lib/uClibc/include -I/opt/20051017/RealTek865x_062/lib/libcrypt -I/opt/20051017/RealTek865x_062 -idirafter /opt/toolchain_mips_nofpu/usr/bin/../lib/gcc-lib/mips-linux-uclibc/3.3.3//include -I/opt/20051017/RealTek865x_062/linux-2.4.x/include -DPRODUCT_NAME="\"DI-724UP+A\"" -DUSB_LED_GPIO_A5  -DDI524UP=1 -DUSER_DEFINE_DAYLIGHT_SAVING=1 -DDONT_TOUCH_TTL -DALOG_NOTICE=224 -DALOG_DROP=216 -DALOG_ATTACK=208 -DALOG_DEBUG=200 -DALOG_SYSACT=192  -DXMLSETC_SEP_CHAR=0x07 -DCONFIG_WIRELESS_CARD_REALTEK=1 -DCONFIG_ALPHA_SMRTNTKY=1 -DUSB_DEVICE=1 -DUSE_PRINTER=1   -DCONFIG_WAN_BIGPOND=1 -I/opt/20051017/RealTek865x_062/user/goahead-2.1.4/LINUX -I/opt/20051017/RealTek865x_062/user/alpha_websrv -I/opt/20051017/RealTek865x_062/user/alpha_websrv/RealTek -I/opt/20051017/RealTek865x_062/user/alpha_websrv/alpha_configapi  -DALPHA=1 -DHAVE__PROGNAME=1 -DHAVE_FCNTL_H=1 -DHAVE_GRP_H=1 -DHAVE_MEMORY_H=1 -DHAVE_PATHS_H=1 -DHAVE_POLL_H=1 -DHAVE_SYS_POLL_H=1 -DTIME_WITH_SYS_TIME=1 -DHAVE_DIRENT_H=1 -DHAVE_LIBCRYPT=1 -DHAVE_STRERROR=1 -DHAVE_WAITPID=1 -DHAVE_VSNPRINTF=1 -DHAVE_SETSID=1 -DHAVE_GETADDRINFO=1 -DHAVE_GETNAMEINFO=1 -DHAVE_GAI_STRERROR=1 -DHAVE_ATOLL=1 -DHAVE_UNISTD_H=1 -DHAVE_GETPAGESIZE=1 -DHAVE_MMAP=1 -DHAVE_SELECT=1 -DHAVE_POLL=1 -DHAVE_INT64T=1  -DWIRELESS=1 -DPRODUCT_SIGNATURE=0x60420010 -DBACKDOOR_SIGNATURE=0x6042FFFF -DXMLSET_BACKDOOR_USER_AGENT="\"xmlset_roodkcableoj28840ybtide\""  -I.  -nostartfiles /opt/20051017/RealTek865x_062/lib/uClibc/lib/crt0.o -L/opt/toolchain_mips_nofpu/usr/bin/../lib/gcc-lib/mips-linux-uclibc/3.3.3/ -L/opt/20051017/RealTek865x_062/lib/uClibc/lib -L/opt/20051017/RealTek865x_062/lib/libnet -L/opt/20051017/RealTek865x_062/lib/libdes -L/opt/20051017/RealTek865x_062/lib/libaes -L/opt/20051017/RealTek865x_062/lib/libpcap -L/opt/20051017/RealTek865x_062/lib/libssl -L/opt/20051017/RealTek865x_062/lib/libcrypt -L/opt/20051017/RealTek865x_062/lib/zlib -L/opt/20051017/RealTek865x_062/lib/libpng -L/opt/20051017/RealTek865x_062/lib/libjpeg -L/opt/20051017/RealTek865x_062/prop/libsnapgear++ -L/opt/20051017/RealTek865x_062/prop/libsnapgear conftest.c ../goahead-2.1.4/LINUX/libwebs.a >&5
configure:2246: $? = 0
configure:2292: result: a.out