Function at 0x403920
Capabilities:
Accept command line arguments
Check if file exists
Get common file path
Get file attributes
Get file version info
Query environment variable
Set environment variable

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x81c
mov eax, dword [0x454004]
xor eax, ebp
mov dword [ebp - 4], eax
push ebx
push esi
push edi
push 0
push 4
push 0
push 2
mov dword [ebp - 0x808], edx
mov dword [ebp - 0x810], ecx
call fcn.00420d45
add esp, 4
push eax
call fcn.004230e7
mov ebx, dword [sym.imp.KERNEL32.dll_GetEnvironmentVariableW]
add esp, 0x10
push pe_nt_image_headers32
push 0x46fec0
push str.PYLAUNCH_DEBUG
call ebx
mov edi, eax
cmp edi, 0x100
jb 0x4039a1
lea ecx, [edi*2 + 2]
push ecx
call fcn.00424b05
mov esi, eax
add esp, 4
test esi, esi
je 0x403e8c
push edi
push esi
push str.PYLAUNCH_DEBUG
call ebx
jmp 0x4039aa
test edi, edi
je 0x4039bf
mov esi, 0x46fec0
cmp word [esi], 0
je 0x4039bf
push 2
call fcn.00420d45
add esp, 4
mov dword [0x4560a8], eax
push str.launcher_build:_32bit_n
call fcn.00401220
push str.launcher_executable:_Windows_n
call fcn.00401220
add esp, 8
push 0x4700c0
push 0
push 0
push 0x1c
push 0
call dword [sym.imp.SHELL32.dll_SHGetFolderPathW]
test eax, eax
je 0x4039f5
push eax
push str.SHGetFolderPath_failed:__X_n
jmp 0x403a28
push 0xffffffffffffffff
push str.py.ini
push 0x104
push 0x4700c0
call fcn.00421baa
add esp, 0x10
push 0x4700c0
call dword [sym.imp.KERNEL32.dll_GetFileAttributesW]
push 0x4700c0
cmp eax, 0xffffffff
jne 0x403a3a
push str.File__ls_non_existent_n
call fcn.00401220
add esp, 8
xor eax, eax
mov word [0x4700c0], ax
jmp 0x403a47
push str.Using_local_configuration_file__ls_n
call fcn.00401220
add esp, 8
mov edi, 0x104
nop dword [eax]
lea ebx, [edi + edi]
push ebx
call fcn.00424b05
mov esi, eax
add esp, 4
test esi, esi
je 0x403e80
push edi
push esi
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameW]
test eax, eax
je 0x403ee9
cmp eax, edi
mov edi, dword [sym.imp.KERNEL32.dll_GetLastError]
jne 0x403a96
call edi
cmp eax, 0x7a
jne 0x403a96
push esi
call fcn.00423169
add esp, 4
mov edi, ebx
jmp 0x403a50
lea eax, [ebp - 0x818]
push eax
push esi
call dword [sym.imp.VERSION.dll_GetFileVersionInfoSizeW]
mov dword [ebp - 0x818], eax
test eax, eax
jne 0x403b0b
call edi
push 0
push 0x400
lea ecx, [ebp - 0x804]
push ecx
push 0x400
push eax
push 0
push 0x1200
call dword [sym.imp.KERNEL32.dll_FormatMessageW]
lea eax, [ebp - 0x804]
push eax
push str.GetFileVersionInfoSize_failed:__ls_n
call fcn.00401220
add esp, 8
mov ebx, dword [ebp - 0x814]
push esi
push 0x104
push 0x455ea0
call fcn.00421d98
add esp, 0xc
test eax, eax
jne 0x403e98
jmp 0x403bc7
push eax
call fcn.00424b05
mov ebx, eax
add esp, 4
test ebx, ebx
je 0x403ae5
push ebx
push dword [ebp - 0x818]
push 0
push esi
call dword [sym.imp.VERSION.dll_GetFileVersionInfoW]
mov dword [ebp - 0x80c], eax
test eax, eax
jne 0x403b55
call edi
push eax
push str.GetFileVersionInfo_failed:__X_n
call fcn.00401220
add esp, 8
push ebx
call fcn.00423169
mov ebx, dword [ebp - 0x80c]
add esp, 4
jmp 0x403aeb
lea eax, [ebp - 0x81c]
push eax
lea eax, [ebp - 0x814]
push eax
push 0x44fbec
push ebx
call dword [sym.imp.VERSION.dll_VerQueryValueW]
mov dword [ebp - 0x80c], eax
test eax, eax
jne 0x403b9d
call edi
push eax
push str.VerQueryValue_failed:__X_n
call fcn.00401220
add esp, 8
push ebx
call fcn.00423169
mov ebx, dword [ebp - 0x80c]
add esp, 4
jmp 0x403aeb
mov ecx, dword [ebp - 0x814]
push ebx
mov eax, dword [ecx + 8]
mov dword [0x4702c8], eax
mov eax, dword [ecx + 0xc]
mov dword [0x4702cc], eax
call fcn.00423169
mov ebx, dword [ebp - 0x80c]
add esp, 4
jmp 0x403aeb
push 0x5c
push 0x455ea0
call fcn.004053b7
add esp, 8
test eax, eax
jne 0x403be6
push 0x455ea0
push str.GetModuleFileNameW_returned_value_has_no_backslash:__ls_n
jmp 0x403c1c
push str.py.ini
xor ecx, ecx
push 0x104
push 0x455ea0
mov word [eax], cx
call fcn.00421e6e
add esp, 0xc
push 0x455ea0
call dword [sym.imp.KERNEL32.dll_GetFileAttributesW]
push 0x455ea0
cmp eax, 0xffffffff
jne 0x403c2e
push str.File__ls_non_existent_n
call fcn.00401220
add esp, 8
xor eax, eax
mov word [0x455ea0], ax
jmp 0x403c3b
push str.Using_global_configuration_file__ls_n
call fcn.00401220
add esp, 8
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
mov ecx, eax
movzx edx, word [ecx]
cmp edx, 0x22
jne 0x403c4e
add ecx, 2
xor eax, eax
cmp edx, 0x22
sete al
lea eax, [eax*2 + 0x20]
push eax
push ecx
call fcn.00405085
add esp, 8
test eax, eax
jne 0x403c72
mov edi, 0x4510e8
jmp 0x403c9e
lea edi, [eax + 2]
movzx eax, word [edi]
test ax, ax
je 0x403c9e
mov ecx, eax
nop
movzx eax, cx
push eax
call fcn.00424450
add esp, 4
test eax, eax
je 0x403c9e
movzx eax, word [edi + 2]
add edi, 2
mov ecx, eax
test ax, ax
jne 0x403c80
push edi
push str.Called_with_command_line:__ls_n
call fcn.00401220
add esp, 8
push 0
push str.__PYVENV_LAUNCHER__
call dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
mov eax, dword [ebp - 0x810]
cmp eax, 1
jle 0x403e55
mov esi, dword [ebp - 0x808]
mov esi, dword [esi + 4]
cmp eax, 2
jne 0x403d1b
push eax
push 0x451fa8
push esi
call fcn.00424acb
add esp, 0xc
test eax, eax
je 0x403cfd
push 6
push str.__list
push esi
call fcn.00424acb
add esp, 0xc
test eax, eax
jne 0x403d1b
mov ecx, dword [ebp - 0x808]
call fcn.004036c0
pop edi
pop esi
xor eax, eax
pop ebx
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.00403ff2
mov esp, ebp
pop ebp
ret
test ebx, ebx
je 0x403d7f
cmp word [esi], 0x2d
jne 0x403d7f
lea ebx, [esi + 2]
mov ecx, ebx
call fcn.00402c40
test eax, eax
je 0x403d7f
xor edx, edx
mov ecx, ebx
call fcn.00402000
mov dword [ebp - 0x80c], eax
test eax, eax
je 0x403ea4
lea ecx, [esi + 2]
nop dword [eax]
mov ax, word [esi]
add esi, 2
test ax, ax
jne 0x403d50
sub esi, ecx
sar esi, 1
lea ecx, [edi + esi*2]
call fcn.004011e0
mov edi, eax
mov eax, dword [ebp - 0x80c]
lea ecx, [eax + 0x14]
test ecx, ecx
jne 0x403ed5
jmp 0x403e6a
mov ecx, 1
mov eax, dword [ebp - 0x808]
lea ebx, [eax + ecx*4]
mov eax, dword [ebx]
cmp word [eax], 0x2d
jne 0x403da2
mov eax, dword [ebp - 0x810]
inc ecx
cmp ecx, eax
jl 0x403d84
jmp 0x403dd9
cmp word [0x455ea0], 0
je 0x403db6
mov ecx, 0x455ea0
call fcn.00402800
cmp word [0x4700c0], 0
je 0x403dca
mov ecx, 0x4700c0
call fcn.00402800
mov edx, edi
mov ecx, ebx
call fcn.00402e80
mov eax, dword [ebp - 0x810]
cmp eax, 2
jne 0x403e55
push 0x452088
push esi
call fcn.00420ee4
add esp, 8
test eax, eax
je 0x403e02
push str.__help
push esi
call fcn.00420ee4
add esp, 8
test eax, eax
jne 0x403e0d
mov ecx, dword [ebp - 0x808]
call fcn.004034c0
push 0x451fa8
push esi
call fcn.00420ee4
add esp, 8
test eax, eax
je 0x403e6a
push str.__list
push esi
call fcn.00420ee4
add esp, 8
test eax, eax
je 0x403e6a
push 0x451b00
push esi
call fcn.00420ee4
add esp, 8
test eax, eax
je 0x403e6a
push str.__list_paths
push esi
call fcn.00420ee4
add esp, 8
test eax, eax
je 0x403e6a
xor edx, edx
mov ecx, 0x4510e8
call fcn.00402000
test eax, eax
je 0x403edd
jmp 0x403d6f
mov ecx, dword [ebp - 4]
mov eax, 0x67
pop edi
pop esi
xor ecx, ebp
pop ebx
call fcn.00403ff2
mov esp, ebp
pop ebp
ret
push str.out_of_memory
push 0x68
call fcn.00401270
push str.Could_not_allocate_environment_buffer
push 0x68
call fcn.00401270
push str.Failed_to_copy_module_name
push 0x68
call fcn.00401270
push ebx
push str.Python__ls_not_found__n
push 1
call fcn.00420d45
add esp, 4
push eax
call fcn.00401090
mov ecx, dword [ebp - 0x808]
add esp, 0xc
call fcn.004036c0
push ebx
push str.Requested_Python_version___ls__not_installed__use__0_for_available_pythons
push 0x67
call fcn.00401270
push edi
xor edx, edx
call fcn.00402390
push str.Cant_find_a_default_Python.
push 0x67
call fcn.00401270
push esi
call fcn.00423169
add esp, 4
push str.Failed_to_get_module_name
push 0
call fcn.00401270
int3