Function at 0x5803f9
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 0x580428
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x580432
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.0058392f
test eax, eax
pop ecx
je 0x58044d
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.00565e87
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.00570d18
test eax, eax
pop ecx
je 0x580468
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.00565e87
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x580485
test ecx, 0x74000
jne 0x580481
cmp dword [ebp - 0x24], eax
je 0x580485
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocStringLen
je 0x5804df
dec eax
je 0x5804c9
dec eax
je 0x5804c4
call fcn.00569b05
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.00569af2
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.00565f83
add esp, 0x14
jmp 0x580a91
mov dword [ebp - 8], edx
jmp 0x5804e2
test cl, 8
je 0x5804d6
test ecx, 0x70000
jne 0x5804c4
mov dword [ebp - 8], 0x40000000
jmp 0x5804e2
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x580523
sub eax, ecx
je 0x58051a
sub eax, ecx
je 0x580511
sub eax, ecx
je 0x580508
sub eax, 0x40
jne 0x58049e
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x580526
mov dword [ebp - 0x10], 3
jmp 0x580526
mov dword [ebp - 0x10], 2
jmp 0x580526
mov dword [ebp - 0x10], 1
jmp 0x580526
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 0x580579
je 0x580570
cmp eax, ebx
je 0x580570
cmp eax, edi
je 0x580567
cmp eax, 0x200
je 0x5805ec
cmp eax, 0x300
jne 0x58049e
mov dword [ebp - 0x14], 2
jmp 0x580596
mov dword [ebp - 0x14], 4
jmp 0x580596
mov dword [ebp - 0x14], 3
jmp 0x580596
cmp eax, 0x500
je 0x58058f
cmp eax, 0x600
je 0x5805ec
cmp eax, edx
jne 0x58049e
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x5805ba
mov ecx, dword [0x5f7f6c]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x5805ba
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x5805d6
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x5805d6
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x5805df
or dword [ebp - 0xc], edi
test al, 0x20
je 0x5805f5
or dword [ebp - 0xc], 0x8000000
jmp 0x580600
mov dword [ebp - 0x14], 5
jmp 0x580596
test al, 0x10
je 0x580600
or dword [ebp - 0xc], 0x10000000
call fcn.0057e82f
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x580626
call fcn.00569b05
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.00569af2
mov dword [eax], 0x18
jmp 0x5806b4
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 0x5806c0
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x58068c
test byte [ebp + 0x10], 1
je 0x58068c
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 0x5806c0
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x5f91c0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00569b18
pop ecx
call fcn.00569af2
mov eax, dword [eax]
jmp 0x580b4d
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x580711
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x5f91c0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.00569b18
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x5806b4
call fcn.00569af2
mov dword [eax], 0xd
jmp 0x5806b4
cmp eax, 2
jne 0x58071c
or byte [ebp - 1], 0x40
jmp 0x580725
cmp eax, 3
jne 0x580725
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.0057e5fe
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x5f91c0]
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 + 0x5f91c0]
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 0x5807fa
test cl, 0x80
je 0x5808ca
test byte [ebp + 0x10], 2
je 0x5807fa
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.00578859
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x5807b9
call fcn.00569b05
cmp dword [eax], 0x83
je 0x5807fa
push dword [esi]
call fcn.00574d16
jmp 0x5806b3
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.0057819b
add esp, 0xc
test eax, eax
jne 0x5807ea
cmp byte [ebp - 4], 0x1a
jne 0x5807ea
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.005836bf
add esp, 0xc
cmp eax, edi
je 0x5807ad
push ebx
push ebx
push dword [esi]
call fcn.00578859
add esp, 0xc
cmp eax, edi
je 0x5807ad
test byte [ebp - 1], 0x80
je 0x5808ca
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x580822
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x58081f
or dword [ebp + 0x10], edi
jmp 0x580822
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x58086f
cmp eax, 0x10000
je 0x58085b
cmp eax, 0x14000
je 0x58085b
cmp eax, 0x20000
je 0x580869
cmp eax, 0x24000
je 0x580869
cmp eax, 0x40000
je 0x580855
cmp eax, 0x44000
jne 0x580872
mov byte [ebp - 2], 1
jmp 0x580872
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x580872
mov byte [ebp - 2], 2
jmp 0x580872
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x5808ca
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x5808ca
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x580a24
cmp eax, 0x80000000
je 0x5809eb
cmp eax, ecx
jne 0x5808ca
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x5808ca
cmp eax, 2
jbe 0x580acc
cmp eax, 4
jbe 0x5809bd
cmp eax, 5
je 0x580acc
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x5f91c0]
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 + 0x5f91c0]
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 0x58093c
test byte [ebp + 0x10], 8
je 0x58093c
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x5f91c0]
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 0x580b4b
test byte [ebp + 0x10], 1
je 0x580b4b
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 0x580b34
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00569b18
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x5f91c0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.0057e67b
pop ecx
jmp 0x5806b3
push 2
push ebx
push ebx
push dword [esi]
call fcn.0057e462
add esp, 0x10
or eax, edx
je 0x580acc
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0057e462
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x5807ad
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.0057819b
add esp, 0xc
cmp eax, 0xffffffff
je 0x5807ad
cmp eax, 2
je 0x580a70
cmp eax, 3
jne 0x580abe
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x580a70
mov byte [ebp - 2], 1
jmp 0x5808ca
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x5808ca
cmp eax, 2
jbe 0x580acc
cmp eax, 4
ja 0x5808c1
push 2
push ebx
push ebx
push dword [esi]
call fcn.0057e462
add esp, 0x10
or eax, edx
je 0x580acc
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0057e462
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x5808ca
jmp 0x5807ad
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x580a98
push dword [esi]
call fcn.00574d16
pop ecx
call fcn.00569af2
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x580b4d
cmp eax, 0xfeff
jne 0x580abe
push ebx
push 2
push dword [esi]
call fcn.00578859
add esp, 0xc
cmp eax, 0xffffffff
je 0x5807ad
mov byte [ebp - 2], 2
jmp 0x5808ca
push ebx
push ebx
push dword [esi]
call fcn.00578859
add esp, 0xc
jmp 0x580a62
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x580aec
dec eax
jne 0x5808ca
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x580afa
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 fcn.0056fc62
add esp, 0xc
cmp eax, 0xffffffff
je 0x580b20
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x580afa
jmp 0x5808ca
push dword [esi]
call fcn.00574d16
pop ecx
call fcn.00569af2
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x580b4d
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x5f91c0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret