Function at 0x100280d
Capabilities:
Parse pe header
Query environment variable
Read file on windows
Set environment variable

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x114
push ebx
xor ebx, ebx
push ebx
push 0x10000000
push 3
push ebx
push 3
push 0x80000000
push dword [ebp + 8]
call dword [sym.imp.KERNEL32.dll_CreateFileA]
cmp eax, 0xffffffff
mov dword [ebp - 0xc], eax
je 0x1002b17
push esi
push edi
mov edi, dword [sym.imp.KERNEL32.dll_ReadFile]
push ebx
lea ecx, [ebp + 8]
push ecx
mov esi, 0xf8
push esi
lea ecx, [ebp - 0x114]
push ecx
push eax
call edi
test eax, eax
je 0x1002b0c
cmp dword [ebp + 8], esi
jne 0x1002b0c
cmp word [ebp - 0x114], 0x5a4d
jne 0x10028b7
push ebx
push ebx
push dword [ebp - 0xd8]
push dword [ebp - 0xc]
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
cmp eax, dword [ebp - 0xd8]
jne 0x1002b0c
push ebx
lea eax, [ebp + 8]
push eax
push esi
lea eax, [ebp - 0x114]
push eax
push dword [ebp - 0xc]
call edi
test eax, eax
je 0x1002b0c
cmp dword [ebp + 8], esi
jne 0x1002b0c
cmp dword [ebp - 0x114], 0x4550
jne 0x1002b0c
cmp word [ebp - 0x100], 0xe0
jb 0x1002b0c
cmp dword [ebp - 0x7c], ebx
je 0x1002b0c
cmp dword [ebp - 0x78], ebx
je 0x1002b0c
cmp dword [ebp - 0x78], 0x40000
ja 0x1002b0c
push dword [ebp - 0x78]
push 8
push dword [0x10088b8]
call dword [sym.imp.KERNEL32.dll_HeapAlloc]
mov esi, eax
cmp esi, ebx
mov dword [ebp - 0x14], esi
je 0x1002b0c
push ebx
push ebx
push dword [ebp - 0x7c]
push dword [ebp - 0xc]
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
cmp eax, dword [ebp - 0x7c]
jne 0x1002b0c
push ebx
lea eax, [ebp + 8]
push eax
push dword [ebp - 0x78]
push esi
push dword [ebp - 0xc]
call edi
test eax, eax
je 0x1002b0c
mov ecx, dword [ebp - 0x78]
cmp dword [ebp + 8], ecx
jne 0x1002b0c
mov eax, esi
mov dword [ebp - 4], ecx
cmp ecx, 0x16
jmp 0x1002993
cmp byte [eax], 0xc0
jne 0x100298b
push 4
pop ecx
mov edi, 0x100218c
mov esi, eax
xor edx, edx
repe cmpsd dword [esi], dword es:[edi]
jne 0x100298b
mov ecx, dword [eax + 0x10]
cmp ecx, 0x16
mov dword [ebp + 8], ecx
jb 0x100298b
cmp ecx, dword [ebp - 4]
ja 0x100298b
push ecx
push eax
push 0xffffffffffffffff
call fcn.010027de
test eax, eax
je 0x100299d
mov eax, dword [ebp - 8]
inc eax
dec dword [ebp - 4]
cmp dword [ebp - 4], 0x16
mov dword [ebp - 8], eax
jae 0x1002956
jmp 0x1002b0c
mov ecx, dword [ebp - 8]
test cl, 3
je 0x10029c2
mov edi, dword [ebp - 0x14]
mov esi, edi
jmp 0x10029b5
dec dword [ebp + 8]
mov al, byte [ecx]
mov byte [esi], al
inc esi
inc ecx
cmp dword [ebp + 8], ebx
jne 0x10029ac
dec dword [ebp + 8]
mov dword [ebp - 8], edi
mov ecx, edi
movzx edx, word [ecx + 0x14]
mov eax, dword [ecx + 0x10]
add eax, ecx
add ecx, 0x16
cmp edx, ebx
mov dword [ebp - 0x14], edx
mov dword [ebp - 0x1c], eax
je 0x1002b0c
mov edi, dword [sym.imp.KERNEL32.dll_WideCharToMultiByte]
jmp 0x10029ea
mov ecx, dword [ebp - 8]
mov eax, dword [ebp - 0x1c]
mov edx, ecx
add ecx, 4
cmp ecx, eax
mov dword [ebp - 0x10], edx
ja 0x1002b0c
mov ax, word [edx]
test al, 1
jne 0x1002b0c
test byte [edx + 2], 1
jne 0x1002b0c
movzx edx, word [edx + 2]
movzx eax, ax
mov esi, ecx
add ecx, eax
mov dword [ebp - 0x18], ecx
add ecx, edx
cmp ecx, dword [ebp - 0x1c]
mov dword [ebp - 8], ecx
ja 0x1002b0c
mov ecx, dword [ebp - 0x18]
shr eax, 1
mov word [esi + eax*2 - 2], bx
mov eax, dword [ebp - 0x10]
movzx eax, word [eax + 2]
push 2
shr eax, 1
mov word [ecx + eax*2 - 2], bx
pop eax
sub esi, eax
mov word [esi], 0x5f
sub esi, eax
mov word [esi], 0x58
sub esi, eax
mov word [esi], 0x46
sub esi, eax
mov word [esi], 0x53
sub esi, eax
lea eax, [ebp - 4]
push eax
push ebx
push ebx
push ebx
push 0xffffffffffffffff
push esi
push ebx
push ebx
mov word [esi], 0x5f
call edi
cmp eax, ebx
mov dword [ebp + 8], eax
je 0x1002b03
cmp dword [ebp - 4], ebx
jne 0x1002b03
push eax
push 8
push dword [0x10088b8]
call dword [sym.imp.KERNEL32.dll_HeapAlloc]
cmp eax, ebx
mov dword [ebp - 0x10], eax
je 0x1002b0c
push ebx
push ebx
push dword [ebp + 8]
push eax
push 0xffffffffffffffff
push esi
push ebx
push ebx
call edi
push ebx
push ebx
push dword [ebp - 0x10]
call dword [sym.imp.KERNEL32.dll_GetEnvironmentVariableA]
test eax, eax
jne 0x1002b03
lea eax, [ebp - 4]
push eax
push ebx
push ebx
push ebx
push 0xffffffffffffffff
push dword [ebp - 0x18]
push ebx
push ebx
call edi
cmp eax, ebx
mov dword [ebp + 8], eax
je 0x1002b03
cmp dword [ebp - 4], ebx
jne 0x1002b03
push eax
push 8
push dword [0x10088b8]
call dword [sym.imp.KERNEL32.dll_HeapAlloc]
mov esi, eax
cmp esi, ebx
je 0x1002b0c
push ebx
push ebx
push dword [ebp + 8]
push esi
push 0xffffffffffffffff
push dword [ebp - 0x18]
push ebx
push ebx
call edi
push esi
push dword [ebp - 0x10]
call dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableA]
dec dword [ebp - 0x14]
jne 0x10029e4
push dword [ebp - 0xc]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
pop edi
pop esi
pop ebx
leave
ret 4