joyce8/EMBER2024-capa huggingface dataset:
Function at 0x4af0c0
Capabilities:
Encode data using base64

Disassembly:
push ebx
push esi
mov esi, dword [esp + 0x14]
xor ebx, ebx
test esi, esi
jle 0x4af1ac
mov edx, dword [esp + 0xc]
push edi
mov edi, dword [esp + 0x14]
inc edi
nop word [eax + eax]
cmp esi, 3
jl 0x4af13d
movzx ecx, byte [edi - 1]
movzx eax, byte [edi]
shl ecx, 8
or ecx, eax
movzx eax, byte [edi + 1]
shl ecx, 8
or ecx, eax
mov eax, ecx
shr eax, 0x12
movzx eax, byte [eax + 0x591108]
mov byte [edx], al
mov eax, ecx
shr eax, 0xc
and eax, 0x3f
movzx eax, byte [eax + 0x591108]
mov byte [edx + 1], al
mov eax, ecx
shr eax, 6
and eax, 0x3f
movzx eax, byte [eax + 0x591108]
mov byte [edx + 2], al
add edx, 3
and ecx, 0x3f
movzx eax, byte [ecx + 0x591108]
mov byte [edx], al
jmp 0x4af191
movzx eax, byte [edi - 1]
shl eax, 0x10
cmp esi, 2
jne 0x4af151
movzx ecx, byte [edi]
shl ecx, 8
or eax, ecx
mov ecx, eax
shr ecx, 0x12
movzx ecx, byte [ecx + 0x591108]
mov byte [edx], cl
mov ecx, eax
shr ecx, 0xc
and ecx, 0x3f
movzx ecx, byte [ecx + 0x591108]
mov byte [edx + 1], cl
cmp esi, 1
jne 0x4af17b
lea eax, [esi + 0x3c]
jmp 0x4af188
shr eax, 6
and eax, 0x3f
movzx eax, byte [eax + 0x591108]
mov byte [edx + 2], al
add edx, 3
mov byte [edx], 0x3d
sub esi, 3
add ebx, 4
add edi, 3
inc edx
test esi, esi
jg 0x4af0e0
pop edi
pop esi
mov eax, ebx
mov byte [edx], 0
pop ebx
ret
mov eax, dword [esp + 0xc]
pop esi
mov byte [eax], bl
mov eax, ebx
pop ebx
ret
Function at 0x4d1610
Capabilities:
Encode data using xor
Hash data using djb2

Disassembly:
sub esp, 0x18
mov eax, dword [0x5c0078]
xor eax, esp
mov dword [esp + 0x14], eax
push esi
mov esi, dword [esp + 0x20]
test esi, esi
je 0x4d16db
lea eax, [esp + 4]
push eax
push esi
push 2
call fcn.004eb000
add esp, 0xc
test eax, eax
jne 0x4d16db
lea eax, [esp + 8]
push eax
push esi
push 0x17
call fcn.004eb000
add esp, 0xc
test eax, eax
jne 0x4d16db
push ebx
push edi
mov edi, esi
xor ebx, ebx
lea ecx, [edi + 1]
mov al, byte [edi]
inc edi
test al, al
jne 0x4d1664
sub edi, ecx
push edi
push 0x2e
push esi
call fcn.004eafd0
add esp, 0xc
test eax, eax
je 0x4d1698
sub eax, esi
push eax
push 0x2e
push esi
call fcn.004eafd0
mov ebx, eax
add esp, 0xc
test ebx, ebx
je 0x4d169a
inc ebx
mov ecx, esi
sub ecx, ebx
add edi, ecx
test ebx, ebx
cmovne esi, ebx
mov ebx, 0x1505
add edi, esi
cmp esi, edi
jae 0x4d16c6
mov al, byte [esi]
push eax
call fcn.004de550
movsx ecx, al
inc esi
mov eax, ebx
add esp, 4
shl eax, 5
add eax, ebx
xor ecx, eax
mov ebx, ecx
cmp esi, edi
jb 0x4d16a8
pop edi
movzx eax, bl
pop ebx
pop esi
mov ecx, dword [esp + 0x14]
xor ecx, esp
call fcn.004351b3
add esp, 0x18
ret
mov ecx, dword [esp + 0x18]
xor eax, eax
pop esi
xor ecx, esp
call fcn.004351b3
add esp, 0x18
ret

Function at 0x4d2210
Capabilities:
Create udp socket

Disassembly:
mov eax, dword [0x5c483c]
cmp eax, 0xffffffff
jne 0x4d2252
push 0
push 2
push 0x17
call dword [sym.imp.WS2_32.dll_socket]
cmp eax, 0xffffffff
jne 0x4d2238
xor eax, eax
test eax, eax
mov dword [0x5c483c], eax
setg al
ret
push eax
push 0
mov dword [0x5c483c], 1
call fcn.004db9b0
mov eax, dword [0x5c483c]
add esp, 8
test eax, eax
setg al
ret

Function at 0x4d2260
Capabilities:
Create udp socket

Disassembly:
mov eax, dword [esp + 4]
cmp dword [eax + 0x2f0], 2
jne 0x4d22b5
mov eax, dword [0x5c483c]
cmp eax, 0xffffffff
jne 0x4d22af
push 0
push 2
push 0x17
call dword [sym.imp.WS2_32.dll_socket]
cmp eax, 0xffffffff
jne 0x4d2295
xor eax, eax
test eax, eax
mov dword [0x5c483c], eax
setg al
ret
push eax
push 0
mov dword [0x5c483c], 1
call fcn.004db9b0
mov eax, dword [0x5c483c]
add esp, 8
test eax, eax
setg al
ret
mov al, 1
ret
Function at 0x4dad60
Capabilities:
Write file on windows

Disassembly:
push edi
mov edi, dword [esp + 8]
cmp dword [edi + 0x608], 0
je 0x4dada4
push esi
push 1
push edi
call fcn.004cd5e0
push dword [edi + 0x59c]
mov eax, dword [edi + 0x608]
push dword [esp + 0x24]
push dword [esp + 0x24]
push dword [esp + 0x24]
push edi
call eax
push 0
push edi
mov esi, eax
call fcn.004cd5e0
add esp, 0x24
mov eax, esi
pop esi
pop edi
ret
mov eax, dword [esp + 0xc]
cmp eax, 2
ja 0x4daddd
push dword [edi + 0x598]
lea eax, [eax + eax*2]
push 1
add eax, 0x59a328
push 2
push eax
call fcn.0053001c
push dword [edi + 0x598]
push 1
push dword [esp + 0x2c]
push dword [esp + 0x2c]
call fcn.0053001c
add esp, 0x20
xor eax, eax
pop edi
ret

Function at 0x4db4e0
Capabilities:
Receive data
Receive data on socket
Send data
Send data on socket

Disassembly:
sub esp, 0x8c
mov eax, dword [0x5c0078]
xor eax, esp
mov dword [esp + 0x88], eax
mov eax, dword [esp + 0x98]
mov edx, dword [esp + 0x94]
push ebx
mov ebx, dword [esp + 0x94]
mov dword [esp + 8], eax
xor eax, eax
push ebp
mov ebp, dword [esp + 0xa8]
mov ecx, dword [ebx + 0x1c4]
cmp edx, ecx
push esi
sete al
mov esi, 0x1e4
push edi
lea eax, [eax*4 + 0x1c0]
mov eax, dword [eax + ebx]
mov dword [esp + 0x10], eax
mov eax, 0x1f4
cmove esi, eax
mov eax, dword [ebx + 0x2e8]
add esi, ebx
mov edi, dword [esi + 4]
sub edi, dword [esi + 8]
test byte [eax + 0x40], 3
je 0x4db5ee
xor eax, eax
cmp edx, ecx
sete al
lea eax, [eax*4 + 0x1d4]
cmp dword [eax + ebx], 0x4db0a0
jne 0x4db5ee
cmp dword [esi], 0
je 0x4db578
test edi, edi
je 0x4db5ee
push 0
push 0
push 0xffffffffffffffff
push 0xffffffffffffffff
push dword [esp + 0x20]
call fcn.004de140
add esp, 0x14
cmp eax, 0xffffffff
je 0x4db5ee
test al, 1
je 0x4db5ee
mov ecx, dword [esi]
test ecx, ecx
jne 0x4db5cb
mov eax, dword [ebx]
mov eax, dword [eax + 0x8f4]
add eax, eax
push eax
mov dword [esi + 4], eax
call dword [0x5c4828]
mov edi, dword [esi + 4]
mov ecx, eax
add esp, 4
mov dword [esi], ecx
mov dword [esi + 8], 0
mov dword [esi + 0xc], 0
test ecx, ecx
je 0x4db5e7
mov eax, dword [esi + 8]
push 0
push edi
add eax, ecx
push eax
push dword [esp + 0x1c]
call dword [sym.imp.WS2_32.dll_recv]
test eax, eax
jle 0x4db5ee
add dword [esi + 8], eax
jmp 0x4db5ee
mov dword [esi + 4], 0
push 0
push dword [esp + 0xb0]
push dword [esp + 0x1c]
push dword [esp + 0x1c]
call dword [sym.imp.WS2_32.dll_send]
mov edi, eax
cmp edi, 0xffffffff
jne 0x4db657
call dword [sym.imp.WS2_32.dll_WSAGetLastError]
mov esi, eax
cmp esi, 0x2733
jne 0x4db628
mov dword [ebp], 0
lea eax, [edi + 0x52]
jmp 0x4db65c
push 0x80
lea eax, [esp + 0x1c]
push eax
push esi
call fcn.005025c0
push eax
push str.Send_failure:__s
push dword [ebx]
call fcn.004dadf0
mov eax, dword [ebx]
add esp, 0x18
mov dword [eax + 0xcfc], esi
mov eax, 0x37
jmp 0x4db659
xor eax, eax
mov dword [ebp], edi
mov ecx, dword [esp + 0x98]
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.004351b3
add esp, 0x8c
ret
Function at 0x4dba70
Capabilities:
Receive data
Receive data on socket

Disassembly:
mov eax, dword [esp + 4]
cmp byte [eax + 0x210], 0
je 0x4dba8d
push eax
call fcn.004d55d0
add esp, 4
test eax, eax
jne 0x4dbaac
xor al, al
ret
mov eax, dword [eax + 0x1c0]
cmp eax, 0xffffffff
je 0x4dba8a
push 2
push 1
lea ecx, [esp + 0xc]
push ecx
push eax
call dword [sym.imp.WS2_32.dll_recv]
test eax, eax
je 0x4dba8a
mov al, 1
ret
Function at 0x4dd730
Capabilities:
Get common file path

Disassembly:
push ecx
push ebx
push edi
push 0x59a7a0
xor edi, edi
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov ebx, eax
test ebx, ebx
jne 0x4dd74a
pop edi
pop ebx
pop ecx
ret
push ebp
push esi
push str.LoadLibraryExA
push ebx
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov esi, dword [esp + 0x18]
mov ebp, eax
push 0x59a7bc
push esi
call fcn.0053d830
add esp, 8
test eax, eax
je 0x4dd792
test ebp, ebp
je 0x4dd783
push 8
push 0
push esi
call ebp
pop esi
pop ebp
mov edi, eax
pop edi
pop ebx
pop ecx
ret
push esi
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
pop esi
pop ebp
mov edi, eax
pop edi
pop ebx
pop ecx
ret
test ebp, ebp
je 0x4dd7b8
push str.AddDllDirectory
push ebx
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
test eax, eax
je 0x4dd7b8
push 0x800
push 0
push esi
call ebp
pop esi
pop ebp
mov edi, eax
pop edi
pop ebx
pop ecx
ret
push 0
push 0
call dword [sym.imp.KERNEL32.dll_GetSystemDirectoryA]
mov edx, eax
mov dword [esp + 0x10], edx
test edx, edx
je 0x4dd86f
mov ecx, esi
lea ebx, [ecx + 1]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x4dd7d5
sub ecx, ebx
lea eax, [edx + 1]
add eax, ecx
push eax
call dword [0x5c4828]
mov ebx, eax
add esp, 4
test ebx, ebx
je 0x4dd865
push dword [esp + 0x10]
push ebx
call dword [sym.imp.KERNEL32.dll_GetSystemDirectoryA]
test eax, eax
je 0x4dd865
mov ecx, ebx
lea edx, [ecx + 1]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x4dd807
sub ecx, edx
mov eax, 0x5c
mov word [ecx + ebx], ax
mov ecx, ebx
lea edx, [ecx + 1]
nop
mov al, byte [ecx]
inc ecx
test al, al
jne 0x4dd820
sub ecx, edx
sub ecx, esi
add ecx, ebx
nop dword [eax]
mov al, byte [esi]
lea esi, [esi + 1]
mov byte [ecx + esi - 1], al
test al, al
jne 0x4dd830
test ebp, ebp
je 0x4dd85c
push 8
push 0
push ebx
call ebp
push ebx
mov edi, eax
call dword [0x5c482c]
add esp, 4
mov eax, edi
pop esi
pop ebp
pop edi
pop ebx
pop ecx
ret
push ebx
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
mov edi, eax
push ebx
call dword [0x5c482c]
add esp, 4
pop esi
pop ebp
mov eax, edi
pop edi
pop ebx
pop ecx
ret
Function at 0x4eb2f0
Capabilities:
Act as tcp client
Connect socket
Connect tcp socket
Connect udp socket
Create tcp socket
Create udp socket
Get local ipv4 addresses
Get socket information
Receive data
Receive data on socket
Send data
Send data on socket
Set socket configuration
Start tcp server

Disassembly:
sub esp, 0x34
mov eax, dword [0x5c0078]
xor eax, esp
mov dword [esp + 0x30], eax
push ebx
mov ebx, dword [esp + 0x48]
push esi
mov esi, dword [sym.imp.WS2_32.dll_socket]
push edi
push 6
push 1
push 2
mov dword [esp + 0x1c], 0x10
mov dword [esp + 0x18], 1
call esi
mov edi, eax
cmp edi, 0xffffffff
je 0x4eb4d6
xorps xmm0, xmm0
mov eax, 2
push 0x7f000001
movlpd qword [esp + 0x20], xmm0
mov word [esp + 0x18], ax
call dword [sym.imp.WS2_32.dll_htonl]
mov dword [esp + 0x18], eax
xor eax, eax
push 4
mov word [esp + 0x1a], ax
lea eax, [esp + 0x10]
push eax
push 4
push 0xffff
push edi
mov dword [ebx + 4], 0xffffffff
mov dword [ebx], 0xffffffff
call dword [sym.imp.WS2_32.dll_setsockopt]
cmp eax, 0xffffffff
je 0x4eb4c4
push 0x10
lea eax, [esp + 0x18]
push eax
push edi
call dword [sym.imp.WS2_32.dll_bind]
cmp eax, 0xffffffff
je 0x4eb4c4
lea eax, [esp + 0x10]
push eax
lea eax, [esp + 0x18]
push eax
push edi
call dword [sym.imp.WS2_32.dll_getsockname]
cmp eax, 0xffffffff
je 0x4eb4c4
push 1
push edi
call dword [sym.imp.WS2_32.dll_listen]
cmp eax, 0xffffffff
je 0x4eb4c4
push 0
push 1
push 2
call esi
mov dword [ebx], eax
cmp eax, 0xffffffff
je 0x4eb4c4
push 0x10
lea ecx, [esp + 0x18]
push ecx
push eax
call dword [sym.imp.WS2_32.dll_connect]
cmp eax, 0xffffffff
je 0x4eb4c4
push 0
push 0
push edi
call dword [sym.imp.WS2_32.dll_accept]
mov dword [ebx + 4], eax
cmp eax, 0xffffffff
je 0x4eb4c4
push ebx
push 0x59c874
lea eax, [esp + 0x2c]
push 0xc
push eax
call fcn.004e9410
lea esi, [esp + 0x34]
add esp, 0x10
lea ecx, [esi + 1]
mov al, byte [esi]
inc esi
test al, al
jne 0x4eb422
push 0
sub esi, ecx
lea eax, [esp + 0x28]
push esi
push eax
push dword [ebx]
call dword [sym.imp.WS2_32.dll_send]
cmp eax, esi
jne 0x4eb4c4
push 0
push 0xc
lea eax, [esp + 0x38]
push eax
push dword [ebx + 4]
call dword [sym.imp.WS2_32.dll_recv]
cmp eax, esi
jne 0x4eb4c4
lea ecx, [esp + 0x24]
lea edx, [esp + 0x30]
sub esi, 4
jb 0x4eb477
mov eax, dword [ecx]
cmp eax, dword [edx]
jne 0x4eb47c
add ecx, 4
add edx, 4
sub esi, 4
jae 0x4eb466
cmp esi, 0xfffffffc
je 0x4eb4a9
mov al, byte [ecx]
cmp al, byte [edx]
jne 0x4eb4c4
cmp esi, 0xfffffffd
je 0x4eb4a9
mov al, byte [ecx + 1]
cmp al, byte [edx + 1]
jne 0x4eb4c4
cmp esi, 0xfffffffe
je 0x4eb4a9
mov al, byte [ecx + 2]
cmp al, byte [edx + 2]
jne 0x4eb4c4
cmp esi, 0xffffffff
je 0x4eb4a9
mov al, byte [ecx + 3]
cmp al, byte [edx + 3]
jne 0x4eb4c4
push edi
call dword [sym.imp.WS2_32.dll_closesocket]
pop edi
pop esi
xor eax, eax
pop ebx
mov ecx, dword [esp + 0x30]
xor ecx, esp
call fcn.004351b3
add esp, 0x34
ret
mov esi, dword [sym.imp.WS2_32.dll_closesocket]
push edi
call esi
push dword [ebx]
call esi
push dword [ebx + 4]
call esi
mov ecx, dword [esp + 0x3c]
or eax, 0xffffffff
pop edi
pop esi
pop ebx
xor ecx, esp
call fcn.004351b3
add esp, 0x34
ret
Function at 0x4eb530
Capabilities:
Resolve dns

Disassembly:
sub esp, 0xc
mov eax, dword [esp + 0x1c]
push ebx
xor ebx, ebx
mov dword [esp + 4], ebx
mov dword [eax], ebx
lea eax, [esp + 8]
push eax
push dword [esp + 0x20]
push dword [esp + 0x20]
push dword [esp + 0x20]
call dword [sym.imp.WS2_32.dll_getaddrinfo]
mov dword [esp + 0xc], eax
test eax, eax
jne 0x4eb6c2
push ebp
push edi
mov edi, dword [esp + 0x10]
test edi, edi
je 0x4eb6ac
push esi
mov eax, dword [edi + 4]
cmp eax, 2
jne 0x4eb57f
lea ebp, [eax + 0xe]
jmp 0x4eb58b
cmp eax, 0x17
jne 0x4eb639
lea ebp, [eax + 5]
cmp dword [edi + 0x18], 0
je 0x4eb639
mov eax, dword [edi + 0x10]
test eax, eax
je 0x4eb639
cmp eax, ebp
jb 0x4eb639
push 0x20
call dword [0x5c4828]
mov esi, eax
add esp, 4
test esi, esi
je 0x4eb6a1
mov eax, dword [edi]
mov dword [esi], eax
mov eax, dword [edi + 4]
mov dword [esi + 4], eax
mov eax, dword [edi + 8]
mov dword [esi + 8], eax
mov eax, dword [edi + 0xc]
push ebp
mov dword [esi + 0xc], eax
mov dword [esi + 0x10], ebp
mov dword [esi + 0x18], 0
mov dword [esi + 0x14], 0
mov dword [esi + 0x1c], 0
call dword [0x5c4828]
add esp, 4
mov dword [esi + 0x18], eax
test eax, eax
je 0x4eb690
push ebp
push dword [edi + 0x18]
push eax
call fcn.00527130
mov eax, dword [edi + 0x14]
add esp, 0xc
test eax, eax
je 0x4eb625
push eax
call dword [0x5c4834]
add esp, 4
mov dword [esi + 0x14], eax
test eax, eax
je 0x4eb676
mov eax, dword [esp + 0x10]
test ebx, ebx
cmove ebx, esi
test eax, eax
je 0x4eb635
mov dword [eax + 0x1c], esi
mov dword [esp + 0x10], esi
mov edi, dword [edi + 0x1c]
test edi, edi
jne 0x4eb572
mov ebp, dword [esp + 0x18]
mov eax, dword [esp + 0x14]
pop esi
test eax, eax
je 0x4eb658
push eax
call dword [sym.imp.WS2_32.dll_freeaddrinfo]
test ebp, ebp
je 0x4eb6a8
push ebx
call fcn.004eb4f0
mov eax, dword [esp + 0x2c]
add esp, 4
xor ebx, ebx
mov dword [eax], ebx
mov eax, ebp
pop edi
pop ebp
pop ebx
add esp, 0xc
ret
push dword [esi + 0x18]
mov ebp, 8
call dword [0x5c482c]
push esi
call dword [0x5c482c]
add esp, 8
jmp 0x4eb648
push esi
mov ebp, 8
call dword [0x5c482c]
add esp, 4
jmp 0x4eb648
mov ebp, 8
jmp 0x4eb648
test ebx, ebx
jne 0x4eb6b8
mov ebp, 0x2af9
push ebp
call dword [sym.imp.WS2_32.dll_WSASetLastError]
mov eax, dword [esp + 0x28]
pop edi
mov dword [eax], ebx
mov eax, ebp
pop ebp
pop ebx
add esp, 0xc
ret
Function at 0x4ef3c0
Capabilities:
Query environment variable

Disassembly:
mov eax, 0x1004
call fcn.00436490
mov eax, dword [0x5c0078]
xor eax, esp
mov dword [esp + 0x1000], eax
mov eax, dword [esp + 0x1008]
push eax
call fcn.0053a51e
add esp, 4
mov byte [esp], 0
test eax, eax
je 0x4ef429
push 0x1000
lea ecx, [esp + 4]
push ecx
push eax
call dword [sym.imp.KERNEL32.dll_ExpandEnvironmentStringsA]
cmp byte [esp], 0
je 0x4ef429
lea eax, [esp]
push eax
call dword [0x5c4834]
add esp, 4
mov ecx, dword [esp + 0x1000]
xor ecx, esp
call fcn.004351b3
add esp, 0x1004
ret
mov ecx, dword [esp + 0x1000]
xor eax, eax
xor ecx, esp
call fcn.004351b3
add esp, 0x1004
ret

Function at 0x4f4950
Capabilities:
Get local ipv4 addresses
Get socket information

Disassembly:
sub esp, 0x88
mov eax, dword [0x5c0078]
xor eax, esp
mov dword [esp + 0x84], eax
push ebx
push ebp
push esi
push edi
mov edi, dword [esp + 0x9c]
lea eax, [esp + 0x10]
push eax
lea eax, [esp + 0x18]
mov dword [esp + 0x14], 0x80
push eax
mov ebp, dword [edi + 0x1c4]
or esi, 0xffffffff
mov ebx, dword [edi]
push ebp
call dword [sym.imp.WS2_32.dll_getsockname]
test eax, eax
jne 0x4f49b2
lea eax, [esp + 0x10]
mov dword [esp + 0x10], 0x80
push eax
lea eax, [esp + 0x18]
push eax
push ebp
call dword [sym.imp.WS2_32.dll_accept]
mov esi, eax
push ebp
push edi
call fcn.004db9b0
add esp, 8
cmp esi, 0xffffffff
jne 0x4f49d6
push str.Error_accept__ing_server_connect
push ebx
call fcn.004dadf0
add esp, 8
mov eax, 0x1e
jmp 0x4f4a45
push str.Connection_accepted_from_server_n
push ebx
call fcn.004daed0
push 1
push esi
mov byte [edi + 0x2b0], 0
mov dword [edi + 0x1c4], esi
call fcn.00502e70
add esp, 0x10
mov byte [edi + 0x1d1], 1
cmp dword [ebx + 0x610], 0
je 0x4f4a43
push 1
push ebx
call fcn.004cd5e0
mov eax, dword [ebx + 0x610]
push 1
push esi
push dword [ebx + 0x614]
call eax
push 0
push ebx
mov esi, eax
call fcn.004cd5e0
add esp, 0x1c
test esi, esi
je 0x4f4a43
push edi
call fcn.004f4ee0
add esp, 4
mov eax, 0x2a
jmp 0x4f4a45
xor eax, eax
mov ecx, dword [esp + 0x94]
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.004351b3
add esp, 0x88
ret
Function at 0x4fbdd0
Capabilities:
Send data
Send data on socket

Disassembly:
mov eax, dword [esp + 0xc]
push ebx
mov ebx, dword [esp + 0xc]
push esi
mov esi, dword [esp + 0xc]
push edi
push 0
mov byte [esp + 0x16], al
lea eax, [esp + 0x14]
mov edi, dword [esi]
push 3
push eax
push dword [esi + 0x1c0]
mov byte [esp + 0x20], 0xff
mov byte [esp + 0x21], bl
call dword [sym.imp.WS2_32.dll_send]
test eax, eax
jns 0x4fbe1c
call dword [sym.imp.WS2_32.dll_WSAGetLastError]
push eax
push str.Sending_data_failed___d_
push edi
call fcn.004dadf0
add esp, 0xc
push dword [esp + 0x18]
push ebx
push str.SENT
push dword [esi]
call fcn.004fb9e0
add esp, 0x10
pop edi
pop esi
pop ebx
ret

Function at 0x4fbf50
Capabilities:
Send data
Send data on socket

Disassembly:
push ecx
cmp dword [esp + 0xc], 0x1f
mov eax, dword [esp + 8]
push ebp
mov eax, dword [eax]
mov dword [esp + 4], eax
mov ebp, dword [eax + 0x14c]
jne 0x4fc0a1
push ebx
push esi
push edi
lea ebx, [ebp + 0x1cb0]
lea edi, [ebp + 0x1eb0]
mov dword [edi], ebx
cmp ebx, edi
jae 0x4fbf8c
lea eax, [ebx + 1]
mov byte [ebx], 0xff
mov dword [edi], eax
jmp 0x4fbf8e
mov eax, ebx
cmp eax, edi
jae 0x4fbfa2
mov byte [eax], 0xfa
inc dword [edi]
mov eax, dword [edi]
cmp eax, edi
jae 0x4fbfa2
mov byte [eax], 0x1f
inc dword [edi]
movzx eax, word [ebp + 0x1ca8]
mov esi, dword [sym.imp.WS2_32.dll_htons]
push eax
call esi
movzx eax, ax
mov dword [esp + 0x1c], eax
movzx eax, word [ebp + 0x1caa]
push eax
call esi
mov edx, dword [esp + 0x1c]
movzx ecx, ax
mov eax, dword [edi]
cmp eax, edi
jae 0x4fc00c
mov byte [eax], dl
inc dword [edi]
mov eax, dword [edi]
cmp eax, edi
jae 0x4fc00c
mov byte [eax], dh
inc dword [edi]
mov eax, dword [edi]
cmp eax, edi
jae 0x4fc00c
mov byte [eax], cl
inc dword [edi]
mov eax, dword [edi]
cmp eax, edi
jae 0x4fc00c
shr ecx, 8
mov byte [eax], cl
inc dword [edi]
mov eax, dword [edi]
cmp eax, edi
jae 0x4fc00c
mov byte [eax], 0xff
inc dword [edi]
mov eax, dword [edi]
cmp eax, edi
jae 0x4fc00c
mov byte [eax], 0xf0
mov eax, dword [edi]
inc eax
mov esi, dword [esp + 0x10]
mov dword [ebp + 0x1eb4], eax
sub eax, ebx
sub eax, 2
mov dword [edi], ebx
push eax
lea eax, [ebp + 0x1cb2]
push eax
push 0x3e
push esi
call fcn.004fbae0
add esp, 0x10
push 0
push 3
push ebx
mov ebx, dword [esp + 0x24]
push dword [ebx + 0x1c0]
call dword [sym.imp.WS2_32.dll_send]
mov edi, dword [sym.imp.WS2_32.dll_WSAGetLastError]
test eax, eax
jns 0x4fc060
call edi
push eax
push str.Sending_data_failed___d_
push esi
call fcn.004dadf0
add esp, 0xc
push 4
lea eax, [ebp + 0x1cb3]
push eax
push ebx
call fcn.004fbe40
add esp, 0xc
lea eax, [ebp + 0x1cb7]
push 0
push 2
push eax
push dword [ebx + 0x1c0]
call dword [sym.imp.WS2_32.dll_send]
test eax, eax
jns 0x4fc09e
call edi
push eax
push str.Sending_data_failed___d_
push esi
call fcn.004dadf0
add esp, 0xc
pop edi
pop esi
pop ebx
pop ebp
pop ecx
ret
Function at 0x4fd550
Capabilities:
Receive data
Receive data on socket

Disassembly:
sub esp, 0x8c
mov eax, dword [0x5c0078]
xor eax, esp
mov dword [esp + 0x88], eax
push ebx
push ebp
mov ebp, dword [esp + 0x98]
lea eax, [esp + 8]
push esi
push edi
push eax
mov edi, dword [ebp + 0x4c8]
lea eax, [esp + 0x1c]
mov ebx, dword [ebp]
push eax
mov dword [esp + 0x18], 0x80
mov eax, dword [edi + 0x154]
push 0
add eax, 4
push eax
push dword [edi + 0x15c]
push dword [edi + 0x14]
call dword [sym.imp.WS2_32.dll_recvfrom]
cmp dword [edi + 0x148], 0
mov dword [edi + 0x14c], eax
jne 0x4fd5d6
push dword [esp + 0x10]
lea eax, [esp + 0x1c]
push eax
lea eax, [edi + 0xc8]
push eax
call fcn.00527130
mov eax, dword [esp + 0x1c]
add esp, 0xc
mov dword [edi + 0x148], eax
mov esi, dword [edi + 0x14c]
cmp esi, 4
jge 0x4fd611
push str.Received_too_short_packet
push ebx
call fcn.004dadf0
add esp, 8
mov dword [edi + 0xc], 7
xor eax, eax
mov ecx, dword [esp + 0x98]
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.004351b3
add esp, 0x8c
ret
mov edx, dword [edi + 0x15c]
movzx ecx, byte [edx]
movzx eax, byte [edx + 1]
shl ecx, 8
or ecx, eax
mov dword [edi + 0xc], ecx
add ecx, 0xfffffffd
cmp ecx, 3
ja case.default.0x4fd632
jmp dword [ecx*4 + 0x4fd744]
cmp esi, 4
jle case.0x4fd632.4
movzx ecx, byte [edx + 2]
movzx eax, byte [edx + 3]
shl ecx, 8
or ecx, eax
movzx eax, word [edi + 0x40]
inc eax
movzx eax, ax
cmp eax, ecx
jne case.0x4fd632.4
lea eax, [esi - 4]
push eax
lea eax, [edx + 4]
push eax
push 1
push ebp
call fcn.004dad30
mov esi, eax
add esp, 0x10
test esi, esi
je 0x4fd68a
push 5
push edi
call fcn.004fe0d0
add esp, 8
mov eax, esi
jmp 0x4fd5f8
mov eax, dword [edi + 0x14c]
sub eax, 4
cdq
add dword [ebx + 0x98], eax
adc dword [ebx + 0x9c], edx
push dword [ebx + 0x9c]
push dword [ebx + 0x98]
push ebx
call fcn.004e8020
jmp 0x4fd71a
movzx ecx, byte [edx + 2]
lea eax, [edx + 4]
mov dword [esp + 0x14], eax
add esi, 0xfffffffc
movzx eax, byte [edx + 3]
shl ecx, 8
or ecx, eax
lea eax, [edx + 4]
push esi
push eax
mov dword [edi + 8], ecx
call fcn.004fd230
add esp, 8
cmp eax, esi
jae case.0x4fd632.4
push dword [esp + 0x14]
push str.TFTP_error:__s_n
push ebx
call fcn.004daed0
jmp 0x4fd71a
lea eax, [esi - 2]
push eax
lea eax, [edx + 2]
push eax
push edi
call fcn.004fd2e0
add esp, 0xc
test eax, eax
je case.0x4fd632.4
jmp 0x4fd5f8
push str.Internal_error:_Unexpected_packet
push 0x59da0c
push ebx
call fcn.004dadf0
add esp, 0xc
push ebp
call fcn.004e83f0
add esp, 4
test eax, eax
je 0x4fd5f6
push 5
push edi
call fcn.004fe0d0
add esp, 8
mov eax, 0x2a
jmp 0x4fd5f8
Function at 0x50cf30
Capabilities:
Create new key via cryptacquirecontext
Encrypt data using des via winapi
Encrypt or decrypt via wincrypt

Disassembly:
sub esp, 0x24
mov eax, dword [0x5c0078]
xor eax, esp
mov dword [esp + 0x20], eax
push edi
mov edi, dword [esp + 0x30]
lea eax, [esp + 4]
push 0xf0000000
push 1
push 0
push 0
push eax
mov dword [esp + 0x1c], 8
call dword [sym.imp.ADVAPI32.dll_CryptAcquireContextA]
test eax, eax
je 0x50d030
push esi
mov esi, dword [esp + 0x38]
push 8
mov dword [esp + 0x18], 0x208
mov dword [esp + 0x1c], 0x6601
mov dl, byte [esi + 1]
mov cl, byte [esi]
mov al, dl
shr al, 1
mov byte [esp + 0x24], cl
shl cl, 7
or al, cl
shl dl, 6
mov cl, byte [esi + 2]
mov byte [esp + 0x25], al
mov al, cl
shr al, 2
or al, dl
shl cl, 5
mov dl, byte [esi + 3]
mov byte [esp + 0x26], al
mov al, dl
shr al, 3
or al, cl
shl dl, 4
mov cl, byte [esi + 4]
mov byte [esp + 0x27], al
mov al, cl
shr al, 4
or al, dl
shl cl, 3
mov dl, byte [esi + 5]
mov byte [esp + 0x28], al
mov al, dl
shr al, 5
or al, cl
shl dl, 2
mov cl, byte [esi + 6]
mov byte [esp + 0x29], al
mov al, cl
shr al, 6
add cl, cl
or al, dl
mov dword [esp + 0x20], 8
mov byte [esp + 0x2a], al
lea eax, [esp + 0x24]
push eax
mov byte [esp + 0x2f], cl
call fcn.0050fb10
add esp, 8
lea eax, [esp + 0x10]
push eax
push 0
push 0
push 0x14
lea eax, [esp + 0x24]
push eax
push dword [esp + 0x1c]
call dword [sym.imp.ADVAPI32.dll_CryptImportKey]
pop esi
test eax, eax
jne 0x50d042
push eax
push dword [esp + 8]
call dword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
xor al, al
pop edi
mov ecx, dword [esp + 0x20]
xor ecx, esp
call fcn.004351b3
add esp, 0x24
ret
mov ecx, dword [esp + 0x2c]
push dword [esp + 8]
mov eax, dword [ecx]
mov dword [edi], eax
mov eax, dword [ecx + 4]
mov dword [edi + 4], eax
lea eax, [esp + 0xc]
push eax
push edi
push 0
push 0
push 0
push dword [esp + 0x24]
call dword [sym.imp.ADVAPI32.dll_CryptEncrypt]
push dword [esp + 0xc]
call dword [sym.imp.ADVAPI32.dll_CryptDestroyKey]
push 0
push dword [esp + 8]
call dword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
mov ecx, dword [esp + 0x24]
mov al, 1
pop edi
xor ecx, esp
call fcn.004351b3
add esp, 0x24
ret