Function at 0x507ddb
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 0x507e0a
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x507e14
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004f6fe1
test eax, eax
pop ecx
je 0x507e2f
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004eea6e
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004f489c
test eax, eax
pop ecx
je 0x507e4a
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004eea6e
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x507e67
test ecx, 0x74000
jne 0x507e63
cmp dword [ebp - 0x24], eax
je 0x507e67
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x507ec1
dec eax
je 0x507eab
dec eax
je 0x507ea6
call fcn.004f5ec3
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5eb0
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004eeb6a
add esp, 0x14
jmp 0x508473
mov dword [ebp - 8], edx
jmp 0x507ec4
test cl, 8
je 0x507eb8
test ecx, 0x70000
jne 0x507ea6
mov dword [ebp - 8], 0x40000000
jmp 0x507ec4
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x507f05
sub eax, ecx
je 0x507efc
sub eax, ecx
je 0x507ef3
sub eax, ecx
je 0x507eea
sub eax, 0x40
jne 0x507e80
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x507f08
mov dword [ebp - 0x10], 3
jmp 0x507f08
mov dword [ebp - 0x10], 2
jmp 0x507f08
mov dword [ebp - 0x10], 1
jmp 0x507f08
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 0x507f5b
je 0x507f52
cmp eax, ebx
je 0x507f52
cmp eax, edi
je 0x507f49
cmp eax, 0x200
je 0x507fce
cmp eax, 0x300
jne 0x507e80
mov dword [ebp - 0x14], 2
jmp 0x507f78
mov dword [ebp - 0x14], 4
jmp 0x507f78
mov dword [ebp - 0x14], 3
jmp 0x507f78
cmp eax, 0x500
je 0x507f71
cmp eax, 0x600
je 0x507fce
cmp eax, edx
jne 0x507e80
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x507f9c
mov ecx, dword [0x55db74]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x507f9c
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x507fb8
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x507fb8
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x507fc1
or dword [ebp - 0xc], edi
test al, 0x20
je 0x507fd7
or dword [ebp - 0xc], 0x8000000
jmp 0x507fe2
mov dword [ebp - 0x14], 5
jmp 0x507f78
test al, 0x10
je 0x507fe2
or dword [ebp - 0xc], 0x10000000
call fcn.004f1dbb
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x508008
call fcn.004f5ec3
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5eb0
mov dword [eax], 0x18
jmp 0x508096
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 0x5080a2
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x50806e
test byte [ebp + 0x10], 1
je 0x50806e
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 0x5080a2
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55ef40]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5ed6
pop ecx
call fcn.004f5eb0
mov eax, dword [eax]
jmp 0x50852f
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x5080f3
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55ef40]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004f5ed6
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x508096
call fcn.004f5eb0
mov dword [eax], 0xd
jmp 0x508096
cmp eax, 2
jne 0x5080fe
or byte [ebp - 1], 0x40
jmp 0x508107
cmp eax, 3
jne 0x508107
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004f1b8a
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x55ef40]
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 + 0x55ef40]
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 0x5081dc
test cl, 0x80
je 0x5082ac
test byte [ebp + 0x10], 2
je 0x5081dc
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004fc36c
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x50819b
call fcn.004f5ec3
cmp dword [eax], 0x83
je 0x5081dc
push dword [esi]
call fcn.004fbf4b
jmp 0x508095
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.004fd335
add esp, 0xc
test eax, eax
jne 0x5081cc
cmp byte [ebp - 4], 0x1a
jne 0x5081cc
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004f1464
add esp, 0xc
cmp eax, edi
je 0x50818f
push ebx
push ebx
push dword [esi]
call fcn.004fc36c
add esp, 0xc
cmp eax, edi
je 0x50818f
test byte [ebp - 1], 0x80
je 0x5082ac
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x508204
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x508201
or dword [ebp + 0x10], edi
jmp 0x508204
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x508251
cmp eax, 0x10000
je 0x50823d
cmp eax, 0x14000
je 0x50823d
cmp eax, 0x20000
je 0x50824b
cmp eax, 0x24000
je 0x50824b
cmp eax, 0x40000
je 0x508237
cmp eax, 0x44000
jne 0x508254
mov byte [ebp - 2], 1
jmp 0x508254
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x508254
mov byte [ebp - 2], 2
jmp 0x508254
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x5082ac
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x5082ac
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x508406
cmp eax, 0x80000000
je 0x5083cd
cmp eax, ecx
jne 0x5082ac
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x5082ac
cmp eax, 2
jbe 0x5084ae
cmp eax, 4
jbe 0x50839f
cmp eax, 5
je 0x5084ae
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ef40]
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 + 0x55ef40]
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 0x50831e
test byte [ebp + 0x10], 8
je 0x50831e
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ef40]
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 0x50852d
test byte [ebp + 0x10], 1
je 0x50852d
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 0x508516
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5ed6
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ef40]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004f1c07
pop ecx
jmp 0x508095
push 2
push ebx
push ebx
push dword [esi]
call fcn.0050265e
add esp, 0x10
or eax, edx
je 0x5084ae
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0050265e
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x50818f
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fd335
add esp, 0xc
cmp eax, 0xffffffff
je 0x50818f
cmp eax, 2
je 0x508452
cmp eax, 3
jne 0x5084a0
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x508452
mov byte [ebp - 2], 1
jmp 0x5082ac
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x5082ac
cmp eax, 2
jbe 0x5084ae
cmp eax, 4
ja 0x5082a3
push 2
push ebx
push ebx
push dword [esi]
call fcn.0050265e
add esp, 0x10
or eax, edx
je 0x5084ae
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0050265e
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x5082ac
jmp 0x50818f
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x50847a
push dword [esi]
call fcn.004fbf4b
pop ecx
call fcn.004f5eb0
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x50852f
cmp eax, 0xfeff
jne 0x5084a0
push ebx
push 2
push dword [esi]
call fcn.004fc36c
add esp, 0xc
cmp eax, 0xffffffff
je 0x50818f
mov byte [ebp - 2], 2
jmp 0x5082ac
push ebx
push ebx
push dword [esi]
call fcn.004fc36c
add esp, 0xc
jmp 0x508444
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x5084ce
dec eax
jne 0x5082ac
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x5084dc
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.00502582
add esp, 0xc
cmp eax, 0xffffffff
je 0x508502
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x5084dc
jmp 0x5082ac
push dword [esi]
call fcn.004fbf4b
pop ecx
call fcn.004f5eb0
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x50852f
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ef40]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret