Function at 0x402896
Capabilities:
Create directory
Query environment variable
Write file on windows

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x164
push ebx
mov ebx, dword [ebp + 0x10]
push esi
mov esi, dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
test ebx, ebx
push edi
je 0x4028c7
push ebx
call esi
test eax, eax
je 0x4028c7
push ebx
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
mov edi, eax
test edi, edi
jne 0x402bbd
mov edi, dword [ebp + 0xc]
push edi
call esi
test eax, eax
je 0x4028e5
push edi
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
mov edi, eax
test edi, edi
jne 0x402bbd
mov edi, dword [ebp + 0xc]
test ebx, ebx
je 0x40290c
lea eax, [ebp - 0x24]
push eax
push ebx
call sub.MSVCRT.dll_strlen
mov esi, dword [ebp + 8]
pop ecx
push eax
push ebx
push dword [esi]
call fcn.0040538b
add esp, 0x10
test eax, eax
je 0x40290f
mov dword [ebp - 4], ebx
jmp 0x402931
mov esi, dword [ebp + 8]
lea eax, [ebp - 0x24]
push eax
push edi
call sub.MSVCRT.dll_strlen
pop ecx
push eax
push edi
push dword [esi]
call fcn.0040538b
add esp, 0x10
test eax, eax
je 0x402afe
mov dword [ebp - 4], edi
cmp dword [ebp - 4], 0
je 0x402afe
mov al, byte [0x40e374]
push 7
mov byte [ebp - 0x44], al
pop ecx
xor eax, eax
lea edi, [ebp - 0x43]
push dword [esi + 0x2c]
rep stosd dword es:[edi], eax
stosw word es:[edi], ax
push esi
stosb byte es:[edi], al
call fcn.00403205
pop ecx
mov dword [ebp - 8], eax
test eax, eax
pop ecx
jne 0x402971
push str.Panic:_Cant_find_temp_dir_for_perlapp
call fcn.00402bf9
jmp 0x402bed
push eax
call sub.MSVCRT.dll_strlen
push dword [ebp - 4]
mov edi, eax
call sub.MSVCRT.dll_strlen
mov ebx, eax
pop ecx
add ebx, edi
cmp dword [esi + 0x2c], 0
pop ecx
jne 0x4029cb
lea eax, [ebp - 0x60]
push eax
push 8
push str.perl.md5
push dword [esi]
call fcn.0040538b
add esp, 0x10
test eax, eax
je 0x4029e7
lea eax, [ebp - 0x60]
push eax
call fcn.0040524d
cmp eax, 0x20
pop ecx
jne 0x4029e7
lea eax, [ebp - 0x44]
push eax
lea eax, [ebp - 0x60]
push eax
call fcn.00405267
pop ecx
test eax, eax
pop ecx
je 0x4029e7
add ebx, 0x21
lea eax, [ebx + 1]
push eax
call dword [sym.imp.MSVCRT.dll_malloc]
mov esi, eax
pop ecx
test esi, esi
jne 0x4029f4
push ebx
push str.Panic:_Cant_malloc_name___d__n
jmp 0x402be7
push dword [ebp - 4]
push str.Panic:_Cant_extract_MD5_checksum_for__s_n
jmp 0x402be7
mov ebx, dword [sym.imp.MSVCRT.dll_strncpy]
push edi
push dword [ebp - 8]
push esi
call ebx
mov eax, dword [ebp + 8]
add esp, 0xc
cmp dword [eax + 0x2c], 0
jne 0x402a30
lea eax, [ebp - 0x44]
push 0x20
push eax
lea eax, [esi + edi]
push eax
call ebx
and byte [esi + edi + 0x20], 0
add edi, 0x20
push esi
call dword [sym.imp.MSVCRT.dll__mkdir]
add esp, 0x10
mov byte [esi + edi], 0x5c
inc edi
push dword [ebp - 4]
lea eax, [esi + edi]
push eax
call sub.MSVCRT.dll_strcpy
mov edi, dword [sym.imp.MSVCRT.dll_fopen]
push 0x40c430
push esi
call edi
add esp, 0x10
mov dword [ebp - 8], eax
test eax, eax
jne 0x402ad8
lea eax, [ebp - 0x24]
push eax
call fcn.0040524d
mov ebx, eax
lea eax, [ebx + 1]
push eax
call dword [sym.imp.MSVCRT.dll_malloc]
pop ecx
mov dword [ebp - 4], eax
test eax, eax
pop ecx
jne 0x402a81
push esi
push str.Panic:_Cant_allocate_memory_for__s
jmp 0x402be7
push eax
lea eax, [ebp - 0x24]
push eax
call fcn.00405267
pop ecx
test eax, eax
pop ecx
jne 0x402a9c
push esi
push str.Panic:_Cant_extract__s
jmp 0x402be7
mov eax, dword [ebp - 4]
push 0x40c3f0
push esi
and byte [eax + ebx], 0
call edi
pop ecx
mov dword [ebp - 8], eax
test eax, eax
pop ecx
jne 0x402abf
push esi
push str.Panic:_Cant_create__s_n
jmp 0x402be7
push eax
push ebx
push 1
push dword [ebp - 4]
call dword [sym.imp.MSVCRT.dll_fwrite]
push dword [ebp - 4]
call dword [sym.imp.MSVCRT.dll_free]
add esp, 0x14
push dword [ebp - 8]
call dword [sym.imp.MSVCRT.dll_fclose]
pop ecx
push esi
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
push esi
mov edi, eax
call dword [sym.imp.MSVCRT.dll_free]
test edi, edi
pop ecx
jne 0x402bbd
mov esi, dword [ebp + 8]
push dword [esi + 8]
call sub.MSVCRT.dll_strlen
test eax, eax
pop ecx
je 0x402b1d
mov ecx, dword [esi + 8]
lea ecx, [ecx + eax - 1]
cmp byte [ecx], 0x5c
je 0x402b1d
dec eax
dec ecx
test eax, eax
jne 0x402b12
push dword [ebp + 0x10]
push dword [ebp + 0xc]
push eax
push dword [esi + 8]
call fcn.00402f4e
mov edi, eax
add esp, 0x10
test edi, edi
jne 0x402bbd
push str.PATH
call dword [sym.imp.MSVCRT.dll_getenv]
pop ecx
mov esi, eax
test esi, esi
je 0x402b88
cmp byte [esi], 0
je 0x402b88
test edi, edi
jne 0x402bbd
push 0x3b
push esi
call dword [sym.imp.MSVCRT.dll_strchr]
pop ecx
test eax, eax
pop ecx
je 0x402b67
sub eax, esi
jmp 0x402b6e
push esi
call sub.MSVCRT.dll_strlen
pop ecx
push dword [ebp + 0x10]
mov ebx, eax
push dword [ebp + 0xc]
push ebx
push esi
call fcn.00402f4e
add esp, 0x10
mov edi, eax
lea esi, [esi + ebx + 1]
jmp 0x402b47
test edi, edi
jne 0x402bbd
cmp dword [ebp + 0x10], edi
push str.Make_sure_the_ActivePerl_bin_directory_is_in_your_PATH_n
je 0x402bab
push dword [ebp + 0x10]
push dword [ebp + 0xc]
push str.Error:_Cant_locate_either__s_or__s_n_s
call fcn.00402bf9
add esp, 0x10
jmp 0x402bee
push dword [ebp + 0xc]
push str.Error:_Cant_locate__s_n_s
call fcn.00402bf9
add esp, 0xc
jmp 0x402bee
push edi
call fcn.00402c50
test eax, eax
pop ecx
jne 0x402bf2
lea eax, [ebp - 0x164]
push 0x104
push eax
push edi
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
lea eax, [ebp - 0x164]
push eax
push str.Panic:_Some_symbols_not_resolvable_from__s_n
call fcn.00402bf9
pop ecx
pop ecx
xor eax, eax
jmp 0x402bf4
mov eax, edi
pop edi
pop esi
pop ebx
leave
ret