Function at 0x640049
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x38
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 - 0x38], 0xc
mov dword [ebp - 0x34], ebx
je 0x640078
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x640082
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.0064261f
test eax, eax
pop ecx
je 0x64009d
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0062460f
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.006258f0
test eax, eax
pop ecx
je 0x6400b8
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0062460f
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x6400d5
test ecx, 0x74000
jne 0x6400d1
cmp dword [ebp - 0x24], eax
je 0x6400d5
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, 0x80000000
je 0x64012f
dec eax
je 0x640119
dec eax
je 0x640114
call fcn.00629722
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0062970f
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.0062470b
add esp, 0x14
jmp 0x6406e2
mov dword [ebp - 8], edx
jmp 0x640132
test cl, 8
je 0x640126
test ecx, 0x70000
jne 0x640114
mov dword [ebp - 8], 0x40000000
jmp 0x640132
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x640173
sub eax, ecx
je 0x64016a
sub eax, ecx
je 0x640161
sub eax, ecx
je 0x640158
sub eax, 0x40
jne 0x6400ee
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x640176
mov dword [ebp - 0x10], 3
jmp 0x640176
mov dword [ebp - 0x10], 2
jmp 0x640176
mov dword [ebp - 0x10], 1
jmp 0x640176
mov dword [ebp - 0x10], ebx
mov eax, dword [ebp + 0x10]
mov edx, 0x700
and eax, edx
mov ecx, 0x400
cmp eax, ecx
mov edi, pe_nt_image_headers32
jg 0x6401c9
je 0x6401c0
cmp eax, ebx
je 0x6401c0
cmp eax, edi
je 0x6401b7
cmp eax, 0x200
je 0x64023c
cmp eax, 0x300
jne 0x6400ee
mov dword [ebp - 0x14], 2
jmp 0x6401e6
mov dword [ebp - 0x14], 4
jmp 0x6401e6
mov dword [ebp - 0x14], 3
jmp 0x6401e6
cmp eax, 0x500
je 0x6401df
cmp eax, 0x600
je 0x64023c
cmp eax, edx
jne 0x6400ee
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x64020a
mov ecx, dword [0x6b6794]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x64020a
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x640226
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x640226
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x64022f
or dword [ebp - 0xc], edi
test al, 0x20
je 0x640245
or dword [ebp - 0xc], 0x8000000
jmp 0x640250
mov dword [ebp - 0x14], 5
jmp 0x6401e6
test al, 0x10
je 0x640250
or dword [ebp - 0xc], 0x10000000
call fcn.0063e15b
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x640276
call fcn.00629722
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0062970f
mov dword [eax], 0x18
jmp 0x640304
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.kernel32.dll_CreateFileW]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x38]
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 0x640310
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x6402dc
test byte [ebp + 0x10], 1
je 0x6402dc
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x38]
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 0x640310
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x76cc00]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.kernel32.dll_GetLastError]
push eax
call fcn.00629735
pop ecx
call fcn.0062970f
mov eax, dword [eax]
jmp 0x64079e
push dword [ebp - 0x1c]
call dword [sym.imp.kernel32.dll_GetFileType]
cmp eax, ebx
jne 0x640361
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x76cc00]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.kernel32.dll_GetLastError]
mov esi, eax
push esi
call fcn.00629735
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.kernel32.dll_CloseHandle]
cmp esi, ebx
jne 0x640304
call fcn.0062970f
mov dword [eax], 0xd
jmp 0x640304
cmp eax, 2
jne 0x64036c
or byte [ebp - 1], 0x40
jmp 0x640375
cmp eax, 3
jne 0x640375
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.0063df2a
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x76cc00]
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 + 0x76cc00]
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 0x64044b
test cl, 0x80
je 0x64051b
test byte [ebp + 0x10], 2
je 0x64044b
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.00634df5
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x640409
call fcn.00629722
cmp dword [eax], 0x83
je 0x64044b
push dword [esi]
call fcn.0063310b
jmp 0x640303
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.006333e5
add esp, 0xc
test eax, eax
jne 0x64043b
cmp word [ebp - 0x2c], 0x1a
jne 0x64043b
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.006423af
add esp, 0xc
cmp eax, edi
je 0x6403fd
push ebx
push ebx
push dword [esi]
call fcn.00634df5
add esp, 0xc
cmp eax, edi
je 0x6403fd
test byte [ebp - 1], 0x80
je 0x64051b
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x640473
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x640470
or dword [ebp + 0x10], edi
jmp 0x640473
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x6404c0
cmp eax, 0x10000
je 0x6404ac
cmp eax, 0x14000
je 0x6404ac
cmp eax, 0x20000
je 0x6404ba
cmp eax, 0x24000
je 0x6404ba
cmp eax, 0x40000
je 0x6404a6
cmp eax, 0x44000
jne 0x6404c3
mov byte [ebp - 2], 1
jmp 0x6404c3
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x6404c3
mov byte [ebp - 2], 2
jmp 0x6404c3
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x64051b
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x64051b
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x640675
cmp eax, 0x80000000
je 0x64063c
cmp eax, ecx
jne 0x64051b
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x64051b
cmp eax, 2
jbe 0x64071d
cmp eax, 4
jbe 0x64060e
cmp eax, 5
je 0x64071d
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x76cc00]
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 + 0x76cc00]
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 0x64058d
test byte [ebp + 0x10], 8
je 0x64058d
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x76cc00]
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 0x64079c
test byte [ebp + 0x10], 1
je 0x64079c
push dword [ebp - 0x1c]
call dword [sym.imp.kernel32.dll_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x38]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.kernel32.dll_CreateFileW]
cmp eax, 0xffffffff
jne 0x640785
call dword [sym.imp.kernel32.dll_GetLastError]
push eax
call fcn.00629735
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x76cc00]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.0063dfa7
pop ecx
jmp 0x640303
push 2
push ebx
push ebx
push dword [esi]
call fcn.0063e2fa
add esp, 0x10
or eax, edx
je 0x64071d
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0063e2fa
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x6403fd
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.006333e5
add esp, 0xc
cmp eax, 0xffffffff
je 0x6403fd
cmp eax, 2
je 0x6406c1
cmp eax, 3
jne 0x64070f
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x6406c1
mov byte [ebp - 2], 1
jmp 0x64051b
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x64051b
cmp eax, 2
jbe 0x64071d
cmp eax, 4
ja 0x640512
push 2
push ebx
push ebx
push dword [esi]
call fcn.0063e2fa
add esp, 0x10
or eax, edx
je 0x64071d
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0063e2fa
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x64051b
jmp 0x6403fd
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x6406e9
push dword [esi]
call fcn.0063310b
pop ecx
call fcn.0062970f
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x64079e
cmp eax, 0xfeff
jne 0x64070f
push ebx
push 2
push dword [esi]
call fcn.00634df5
add esp, 0xc
cmp eax, 0xffffffff
je 0x6403fd
mov byte [ebp - 2], 2
jmp 0x64051b
push ebx
push ebx
push dword [esi]
call fcn.00634df5
add esp, 0xc
jmp 0x6406b3
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x64073d
dec eax
jne 0x64051b
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x64074b
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.006341c9
add esp, 0xc
cmp eax, 0xffffffff
je 0x640771
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x64074b
jmp 0x64051b
push dword [esi]
call fcn.0063310b
pop ecx
call fcn.0062970f
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x64079e
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x76cc00]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret