Function at 0x781642cf
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x34
push ebx
xor ebx, ebx
test byte [ebp + 0x10], 0x80
push esi
push edi
mov esi, eax
mov dword [ebp - 0x24], ebx
mov dword [ebp - 0x28], ebx
mov byte [ebp - 2], bl
mov dword [ebp - 0x34], 0xc
mov dword [ebp - 0x30], ebx
je 0x781642fe
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x78164308
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call sym.MSVCR80.dll__get_fmode
test eax, eax
pop ecx
je 0x78164323
push ebx
push ebx
push ebx
push ebx
push ebx
call sym.MSVCR80.dll__invoke_watson
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call sym.MSVCR80.dll__get_osplatform
test eax, eax
pop ecx
je 0x7816433e
push ebx
push ebx
push ebx
push ebx
push ebx
call sym.MSVCR80.dll__invoke_watson
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x7816435b
test ecx, 0x74000
jne 0x78164357
cmp dword [ebp - 0x24], eax
je 0x7816435b
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, 0x80000000
je 0x781643b5
dec eax
je 0x7816439f
dec eax
je 0x7816439a
call sym.MSVCR80.dll___doserrno
mov dword [eax], ebx
or dword [esi], 0xffffffff
call sym.MSVCR80.dll__errno
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call sym.MSVCR80.dll__invalid_parameter
add esp, 0x14
jmp 0x78164967
mov dword [ebp - 8], edx
jmp 0x781643b8
test cl, 8
je 0x781643ac
test ecx, 0x70000
jne 0x7816439a
mov dword [ebp - 8], 0x40000000
jmp 0x781643b8
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x781643f9
sub eax, ecx
je 0x781643f0
sub eax, ecx
je 0x781643e7
sub eax, ecx
je 0x781643de
sub eax, 0x40
jne 0x78164374
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x781643fc
mov dword [ebp - 0x10], 3
jmp 0x781643fc
mov dword [ebp - 0x10], 2
jmp 0x781643fc
mov dword [ebp - 0x10], 1
jmp 0x781643fc
mov dword [ebp - 0x10], ebx
mov eax, dword [ebp + 0x10]
mov edx, 0x700
and eax, edx
mov ecx, 0x400
cmp eax, ecx
mov edi, 0x100
jg 0x7816444f
je 0x78164446
cmp eax, ebx
je 0x78164446
cmp eax, edi
je 0x7816443d
cmp eax, 0x200
je 0x781644c2
cmp eax, 0x300
jne 0x78164374
mov dword [ebp - 0x14], 2
jmp 0x7816446c
mov dword [ebp - 0x14], 4
jmp 0x7816446c
mov dword [ebp - 0x14], 3
jmp 0x7816446c
cmp eax, 0x500
je 0x78164465
cmp eax, 0x600
je 0x781644c2
cmp eax, edx
jne 0x78164374
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x78164490
mov ecx, dword [0x781c37bc]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x78164490
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x781644ac
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x781644ac
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x781644b5
or dword [ebp - 0xc], edi
test al, 0x20
je 0x781644cb
or dword [ebp - 0xc], 0x8000000
jmp 0x781644d6
mov dword [ebp - 0x14], 5
jmp 0x7816446c
test al, 0x10
je 0x781644d6
or dword [ebp - 0xc], 0x10000000
call fcn.7814ecc1
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x781644fc
call sym.MSVCR80.dll___doserrno
mov dword [eax], ebx
or dword [esi], 0xffffffff
call sym.MSVCR80.dll__errno
mov dword [eax], 0x18
jmp 0x7816458a
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.KERNEL32.dll_CreateFileA]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x34]
push eax
push dword [ebp - 0x10]
push dword [ebp - 8]
push dword [ebp + 0xc]
call edi
cmp eax, 0xffffffff
mov dword [ebp - 0x1c], eax
jne 0x78164596
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x78164562
test byte [ebp + 0x10], 1
je 0x78164562
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
push dword [ebp - 0x14]
push eax
push dword [ebp - 0x10]
push dword [ebp - 8]
push dword [ebp + 0xc]
call edi
cmp eax, 0xffffffff
mov dword [ebp - 0x1c], eax
jne 0x78164596
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + sym.MSVCR80.dll___pioinfo]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call sym.MSVCR80.dll__dosmaperr
pop ecx
call sym.MSVCR80.dll__errno
mov eax, dword [eax]
jmp 0x78164a23
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x781645e7
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + sym.MSVCR80.dll___pioinfo]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call sym.MSVCR80.dll__dosmaperr
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x7816458a
call sym.MSVCR80.dll__errno
mov dword [eax], 0xd
jmp 0x7816458a
cmp eax, 2
jne 0x781645f2
or byte [ebp - 1], 0x40
jmp 0x781645fb
cmp eax, 3
jne 0x781645fb
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.7814ea90
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + sym.MSVCR80.dll___pioinfo]
pop ecx
pop ecx
mov cl, byte [ebp - 1]
or cl, 1
mov byte [edx + eax + 4], cl
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + sym.MSVCR80.dll___pioinfo]
lea eax, [edx + eax + 0x24]
and byte [eax], 0x80
mov byte [ebp - 3], cl
and byte [ebp - 3], 0x48
mov byte [ebp - 1], cl
jne 0x781646d0
test cl, 0x80
je 0x781647a0
test byte [ebp + 0x10], 2
je 0x781646d0
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.7816402f
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x7816468f
call sym.MSVCR80.dll___doserrno
cmp dword [eax], 0x83
je 0x781646d0
push dword [esi]
call fcn.7814e78c
jmp 0x78164589
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.78164f95
add esp, 0xc
test eax, eax
jne 0x781646c0
cmp byte [ebp - 4], 0x1a
jne 0x781646c0
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.78161d39
add esp, 0xc
cmp eax, edi
je 0x78164683
push ebx
push ebx
push dword [esi]
call fcn.7816402f
add esp, 0xc
cmp eax, edi
je 0x78164683
test byte [ebp - 1], 0x80
je 0x781647a0
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x781646f8
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x781646f5
or dword [ebp + 0x10], edi
jmp 0x781646f8
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x78164745
cmp eax, 0x10000
je 0x78164731
cmp eax, 0x14000
je 0x78164731
cmp eax, 0x20000
je 0x7816473f
cmp eax, 0x24000
je 0x7816473f
cmp eax, 0x40000
je 0x7816472b
cmp eax, 0x44000
jne 0x78164748
mov byte [ebp - 2], 1
jmp 0x78164748
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x78164748
mov byte [ebp - 2], 2
jmp 0x78164748
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x781647a0
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x781647a0
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x781648fa
cmp eax, 0x80000000
je 0x781648c1
cmp eax, ecx
jne 0x781647a0
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x781647a0
cmp eax, 2
jbe 0x781649a2
cmp eax, 4
jbe 0x78164893
cmp eax, 5
je 0x781649a2
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + sym.MSVCR80.dll___pioinfo]
lea eax, [ecx + eax + 0x24]
mov cl, byte [eax]
xor cl, byte [ebp - 2]
and cl, 0x7f
xor byte [eax], cl
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + sym.MSVCR80.dll___pioinfo]
lea eax, [ecx + eax + 0x24]
mov ecx, dword [ebp + 0x10]
mov dl, byte [eax]
shr ecx, 0x10
shl cl, 7
and dl, 0x7f
or cl, dl
cmp byte [ebp - 3], bl
mov byte [eax], cl
jne 0x78164812
test byte [ebp + 0x10], 8
je 0x78164812
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + sym.MSVCR80.dll___pioinfo]
lea eax, [ecx + eax + 4]
or byte [eax], 0x20
mov edi, dword [ebp - 8]
mov eax, 0xc0000000
mov ecx, edi
and ecx, eax
cmp ecx, eax
jne 0x78164a21
test byte [ebp + 0x10], 1
je 0x78164a21
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.KERNEL32.dll_CreateFileA]
cmp eax, 0xffffffff
jne 0x78164a0a
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call sym.MSVCR80.dll__dosmaperr
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + sym.MSVCR80.dll___pioinfo]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.7814eb0d
pop ecx
jmp 0x78164589
push 2
push ebx
push ebx
push dword [esi]
call fcn.7814e592
add esp, 0x10
or eax, edx
je 0x781649a2
push ebx
push ebx
push ebx
push dword [esi]
call fcn.7814e592
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x78164683
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.78164f95
add esp, 0xc
cmp eax, 0xffffffff
je 0x78164683
cmp eax, 2
je 0x78164946
cmp eax, 3
jne 0x78164994
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x78164946
mov byte [ebp - 2], 1
jmp 0x781647a0
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x781647a0
cmp eax, 2
jbe 0x781649a2
cmp eax, 4
ja 0x78164797
push 2
push ebx
push ebx
push dword [esi]
call fcn.7814e592
add esp, 0x10
or eax, edx
je 0x781649a2
push ebx
push ebx
push ebx
push dword [esi]
call fcn.7814e592
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x781647a0
jmp 0x78164683
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x7816496e
push dword [esi]
call fcn.7814e78c
pop ecx
call sym.MSVCR80.dll__errno
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x78164a23
cmp eax, 0xfeff
jne 0x78164994
push ebx
push 2
push dword [esi]
call fcn.7816402f
add esp, 0xc
cmp eax, 0xffffffff
je 0x78164683
mov byte [ebp - 2], 2
jmp 0x781647a0
push ebx
push ebx
push dword [esi]
call fcn.7816402f
add esp, 0xc
jmp 0x78164938
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x781649c2
dec eax
jne 0x781647a0
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x781649d0
mov dword [ebp - 0x18], 0xbfbbef
mov dword [ebp - 0x14], 3
mov eax, dword [ebp - 0x14]
sub eax, edi
push eax
lea eax, [ebp + edi - 0x18]
push eax
push dword [esi]
call sym.MSVCR80.dll__write
add esp, 0xc
cmp eax, 0xffffffff
je 0x781649f6
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x781649d0
jmp 0x781647a0
push dword [esi]
call fcn.7814e78c
pop ecx
call sym.MSVCR80.dll__errno
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x78164a23
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + sym.MSVCR80.dll___pioinfo]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret