Function at 0x51b820
Capabilities:
Get common file path
Query environment variable

Disassembly:
mov eax, dword fs:[0]
push 0xffffffffffffffff
push 0x62aa56
push eax
mov dword fs:[0], esp
sub esp, 0x430
push ebx
push ebp
push esi
mov esi, dword [esp + 0x44c]
test esi, esi
push edi
je 0x51bc2b
mov ebp, dword [esp + 0x454]
test ebp, ebp
je 0x51bc2b
mov edi, dword [esp + 0x458]
test edi, edi
je 0x51bc2b
push esi
call fcn.0042be80
mov ebx, eax
add esp, 4
cmp ebx, edi
jb 0x51b88f
mov dword [0x6a7d00], 0xea
push 0xea
jmp 0x51bc37
lea ecx, [edi + edi]
xor eax, eax
mov edx, ecx
mov edi, ebp
shr ecx, 2
rep stosd dword es:[edi], eax
mov ecx, edx
push esi
and ecx, 3
push ebp
rep stosb byte es:[edi], al
call fcn.0042be5b
mov ax, word [esi]
mov edi, 0x5c
add esp, 8
cmp ax, di
jne 0x51bb66
push 0xc
push str.SystemRoot_
push esi
call fcn.0042c62f
add esp, 0xc
test eax, eax
jne 0x51b99f
mov ecx, 0x81
lea edi, [esp + 0x32]
mov word [esp + 0x30], ax
push 0x104
rep stosd dword es:[edi], eax
stosw word es:[edi], ax
lea eax, [esp + 0x34]
add esi, 0x18
push eax
call dword [sym.imp.KERNEL32.dll_GetSystemDirectoryW]
test eax, eax
jbe 0x51b97a
lea ecx, [esp + 0x30]
push 0x5c
push ecx
call fcn.0042bdf1
add esp, 8
test eax, eax
je 0x51b918
mov word [eax], 0
lea edx, [esp + 0x30]
test edx, edx
je 0x51b973
test esi, esi
mov edi, 0x7a
je 0x51b949
mov ecx, dword [esp + 0x458]
lea eax, [esp + 0x30]
push esi
push eax
push 0x679e38
push ecx
push ebp
call fcn.0042ccff
add esp, 0x14
xor edi, edi
jmp 0x51b982
lea edx, [esp + 0x30]
push edx
call fcn.0042be80
mov ecx, dword [esp + 0x45c]
add esp, 4
cmp ecx, eax
jbe 0x51b982
lea eax, [esp + 0x30]
push eax
push ebp
call fcn.0042be5b
add esp, 8
xor edi, edi
jmp 0x51b982
mov edi, 0x57
jmp 0x51b982
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov edi, eax
test edi, edi
mov dword [0x6a7d00], edi
je 0x51b993
push edi
call dword [sym.imp.KERNEL32.dll_SetLastError]
xor eax, eax
test edi, edi
sete al
jmp 0x51bc3f
push 8
push str.__UNC_
push esi
call fcn.0042c62f
add esp, 0xc
test eax, eax
je 0x51bb4c
push 8
push str._UNC_
push esi
call fcn.0042c62f
add esp, 0xc
test eax, eax
je 0x51bb4c
push 8
push str..UNC_
push esi
call fcn.0042c62f
add esp, 0xc
test eax, eax
je 0x51bb4c
push 4
push 0x67ef8c
push esi
call fcn.0042c62f
add esp, 0xc
test eax, eax
je 0x51bb1f
push 4
push str.__
push esi
call fcn.0042c62f
add esp, 0xc
test eax, eax
je 0x51bb1f
push 4
push str.._
push esi
call fcn.0042c62f
add esp, 0xc
test eax, eax
je 0x51bb1f
push 0x10
push 0x67ef64
push esi
call fcn.0042c62f
add esp, 0xc
test eax, eax
jne 0x51bbba
lea ecx, [esp + 0x20]
call fcn.0044cc90
xor ebx, ebx
lea ecx, [esp + 0x10]
mov dword [esp + 0x448], ebx
call fcn.0044cc90
lea ecx, [esp + 0x10]
lea edx, [esp + 0x20]
push ecx
push edx
mov byte [esp + 0x450], 1
call fcn.00536960
mov eax, dword [esp + 0x1c]
add esp, 8
test eax, eax
jle 0x51baf5
mov eax, dword [esp + 0x10]
mov eax, dword [eax + ebx*4]
mov edi, dword [eax - 8]
test edi, edi
jbe 0x51bab1
push edi
push esi
push eax
call fcn.0042c62f
add esp, 0xc
test eax, eax
jne 0x51bab1
mov ax, word [esi + edi*2]
cmp ax, 0x5c
je 0x51babc
cmp ax, 0x2f
je 0x51babc
mov eax, dword [esp + 0x14]
inc ebx
cmp ebx, eax
jl 0x51ba84
jmp 0x51baf5
push esi
call fcn.0042be80
mov ecx, dword [esp + 0x45c]
sub eax, edi
add eax, 2
add esp, 4
cmp eax, ecx
jae 0x51baf5
mov ecx, dword [esp + 0x20]
push 2
mov ebx, dword [ecx + ebx*4]
push ebx
push ebp
call fcn.0042be9d
lea edx, [esi + edi*2]
lea eax, [ebp + 4]
push edx
push eax
call fcn.0042be5b
add esp, 0x14
lea ecx, [esp + 0x10]
mov byte [esp + 0x448], 0
call fcn.0044cca0
lea ecx, [esp + 0x20]
mov dword [esp + 0x448], 0xffffffff
call fcn.0044cca0
jmp 0x51bbba
cmp ebx, 7
jb 0x51bb40
cmp word [esi + 0xa], 0x3a
jne 0x51bb40
cmp word [esi + 0xc], di
jne 0x51bb40
add esi, 8
push esi
push ebp
call fcn.0042be5b
add esp, 8
jmp 0x51bbba
mov word [ebp + 2], di
mov word [ebp + 4], 0x2e
jmp 0x51bbba
add esi, 0x10
lea ecx, [ebp + 4]
push esi
push ecx
mov word [ebp], di
mov word [ebp + 2], di
call fcn.0042be5b
add esp, 8
jmp 0x51bbba
cmp ax, 0x25
jne 0x51bbba
lea edi, [esi + 2]
push 0x25
push edi
call fcn.0042c43c
push 0x5c
push edi
mov ebx, eax
call fcn.0042c43c
add esp, 0x10
test ebx, ebx
je 0x51bbba
test eax, eax
je 0x51bbba
cmp ebx, eax
jae 0x51bbba
mov edx, dword [esp + 0x458]
lea edi, [edx - 1]
push edi
push ebp
push esi
call dword [sym.imp.KERNEL32.dll_ExpandEnvironmentStringsW]
test eax, eax
je 0x51bc3d
cmp eax, edi
ja 0x51bc3d
mov word [ebp + eax*2 - 2], 0
push ebp
call fcn.0051c6c0
add esp, 4
test eax, eax
je 0x51bc24
mov ecx, 0x103
xor eax, eax
lea edi, [esp + 0x32]
mov word [esp + 0x30], 0
rep stosd dword es:[edi], eax
stosw word es:[edi], ax
lea eax, [esp + 0x30]
push 0x208
push eax
push ebp
call fcn.0051c380
add esp, 0xc
test eax, eax
je 0x51bc24
lea ecx, [esp + 0x30]
push ecx
call fcn.0042be80
mov esi, eax
mov eax, dword [esp + 0x45c]
add esp, 4
cmp esi, eax
jge 0x51bc24
lea edx, [esp + 0x30]
push esi
push edx
push ebp
call fcn.0042be9d
add esp, 0xc
mov word [ebp + esi*2], 0
mov eax, 1
jmp 0x51bc3f
mov dword [0x6a7d00], 0x57
push 0x57
call dword [sym.imp.KERNEL32.dll_SetLastError]
xor eax, eax
mov ecx, dword [esp + 0x440]
pop edi
pop esi
pop ebp
pop ebx
mov dword fs:[0], ecx
add esp, 0x43c
ret