Function at 0x641120
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 0x64114f
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x641159
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.006436ce
test eax, eax
pop ecx
je 0x641174
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0062480b
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.006292e8
test eax, eax
pop ecx
je 0x64118f
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0062480b
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x6411ac
test ecx, 0x74000
jne 0x6411a8
cmp dword [ebp - 0x24], eax
je 0x6411ac
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, connect
je 0x641206
dec eax
je 0x6411f0
dec eax
je 0x6411eb
call fcn.00629a16
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.00629a03
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.00624907
add esp, 0x14
jmp 0x6417b8
mov dword [ebp - 8], edx
jmp 0x641209
test cl, 8
je 0x6411fd
test ecx, 0x70000
jne 0x6411eb
mov dword [ebp - 8], 0x40000000
jmp 0x641209
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x64124a
sub eax, ecx
je 0x641241
sub eax, ecx
je 0x641238
sub eax, ecx
je 0x64122f
sub eax, 0x40
jne 0x6411c5
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x64124d
mov dword [ebp - 0x10], 3
jmp 0x64124d
mov dword [ebp - 0x10], 2
jmp 0x64124d
mov dword [ebp - 0x10], 1
jmp 0x64124d
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 0x6412a0
je 0x641297
cmp eax, ebx
je 0x641297
cmp eax, edi
je 0x64128e
cmp eax, 0x200
je 0x641313
cmp eax, 0x300
jne 0x6411c5
mov dword [ebp - 0x14], 2
jmp 0x6412bd
mov dword [ebp - 0x14], 4
jmp 0x6412bd
mov dword [ebp - 0x14], 3
jmp 0x6412bd
cmp eax, 0x500
je 0x6412b6
cmp eax, 0x600
je 0x641313
cmp eax, edx
jne 0x6411c5
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x6412e1
mov ecx, dword [0x6b7900]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x6412e1
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x6412fd
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x6412fd
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x641306
or dword [ebp - 0xc], edi
test al, 0x20
je 0x64131c
or dword [ebp - 0xc], 0x8000000
jmp 0x641327
mov dword [ebp - 0x14], 5
jmp 0x6412bd
test al, 0x10
je 0x641327
or dword [ebp - 0xc], 0x10000000
call fcn.00640f81
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x64134d
call fcn.00629a16
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.00629a03
mov dword [eax], 0x18
jmp 0x6413db
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 0x6413e7
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x6413b3
test byte [ebp + 0x10], 1
je 0x6413b3
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 0x6413e7
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x6f4900]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00629a29
pop ecx
call fcn.00629a03
mov eax, dword [eax]
jmp 0x641874
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x641438
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x6f4900]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.00629a29
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x6413db
call fcn.00629a03
mov dword [eax], 0xd
jmp 0x6413db
cmp eax, 2
jne 0x641443
or byte [ebp - 1], 0x40
jmp 0x64144c
cmp eax, 3
jne 0x64144c
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.00640d50
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x6f4900]
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 + 0x6f4900]
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 0x641521
test cl, 0x80
je 0x6415f1
test byte [ebp + 0x10], 2
je 0x641521
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.0063719a
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x6414e0
call fcn.00629a16
cmp dword [eax], 0x83
je 0x641521
push dword [esi]
call fcn.00635cdc
jmp 0x6413da
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.006372e8
add esp, 0xc
test eax, eax
jne 0x641511
cmp byte [ebp - 4], 0x1a
jne 0x641511
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.0064345e
add esp, 0xc
cmp eax, edi
je 0x6414d4
push ebx
push ebx
push dword [esi]
call fcn.0063719a
add esp, 0xc
cmp eax, edi
je 0x6414d4
test byte [ebp - 1], 0x80
je 0x6415f1
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x641549
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x641546
or dword [ebp + 0x10], edi
jmp 0x641549
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x641596
cmp eax, 0x10000
je 0x641582
cmp eax, 0x14000
je 0x641582
cmp eax, 0x20000
je 0x641590
cmp eax, 0x24000
je 0x641590
cmp eax, 0x40000
je 0x64157c
cmp eax, 0x44000
jne 0x641599
mov byte [ebp - 2], 1
jmp 0x641599
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x641599
mov byte [ebp - 2], 2
jmp 0x641599
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x6415f1
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x6415f1
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x64174b
cmp eax, 0x80000000
je 0x641712
cmp eax, ecx
jne 0x6415f1
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x6415f1
cmp eax, 2
jbe 0x6417f3
cmp eax, 4
jbe 0x6416e4
cmp eax, 5
je 0x6417f3
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x6f4900]
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 + 0x6f4900]
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 0x641663
test byte [ebp + 0x10], 8
je 0x641663
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x6f4900]
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 0x641872
test byte [ebp + 0x10], 1
je 0x641872
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 0x64185b
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00629a29
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x6f4900]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.00640dcd
pop ecx
jmp 0x6413da
push 2
push ebx
push ebx
push dword [esi]
call fcn.00641d10
add esp, 0x10
or eax, edx
je 0x6417f3
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00641d10
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x6414d4
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.006372e8
add esp, 0xc
cmp eax, 0xffffffff
je 0x6414d4
cmp eax, 2
je 0x641797
cmp eax, 3
jne 0x6417e5
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x641797
mov byte [ebp - 2], 1
jmp 0x6415f1
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x6415f1
cmp eax, 2
jbe 0x6417f3
cmp eax, 4
ja 0x6415e8
push 2
push ebx
push ebx
push dword [esi]
call fcn.00641d10
add esp, 0x10
or eax, edx
je 0x6417f3
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00641d10
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x6415f1
jmp 0x6414d4
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x6417bf
push dword [esi]
call fcn.00635cdc
pop ecx
call fcn.00629a03
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x641874
cmp eax, 0xfeff
jne 0x6417e5
push ebx
push 2
push dword [esi]
call fcn.0063719a
add esp, 0xc
cmp eax, 0xffffffff
je 0x6414d4
mov byte [ebp - 2], 2
jmp 0x6415f1
push ebx
push ebx
push dword [esi]
call fcn.0063719a
add esp, 0xc
jmp 0x641789
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x641813
dec eax
jne 0x6415f1
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x641821
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.00639765
add esp, 0xc
cmp eax, 0xffffffff
je 0x641847
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x641821
jmp 0x6415f1
push dword [esi]
call fcn.00635cdc
pop ecx
call fcn.00629a03
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x641874
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x6f4900]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret