Function at 0x1803b8a50
Capabilities:
Send data
Send data on socket

Disassembly:
mov qword [rsp + 0x18], rbx
push rbp
push rsi
push rdi
push r14
push r15
lea rbp, [rsp - 0xa0]
sub rsp, 0x1a0
mov rax, qword [0x18053d0c0]
xor rax, rsp
mov qword [rbp + 0x90], rax
mov r15, qword [rcx + 0x10]
lea rax, str.octet
xor esi, esi
lea r14, str.netascii
mov rbx, rcx
cmp byte [r15 + 0x136a], sil
cmove r14, rax
cmp edx, 7
ja case.0x1803b840c.1
lea r8, [0x180000000]
movsxd rax, edx
mov ecx, dword [r8 + rax*4 + 0x3b8930]
add rcx, r8
jmp rcx
inc dword [rbx + 0x20]
mov eax, dword [rbx + 0x20]
cmp eax, dword [rbx + 0x28]
jle 0x1803b842d
mov dword [rbx + 8], 0xffffff9e
xor eax, eax
mov dword [rbx], 3
jmp 0x1803b8907
mov rax, qword [rbx + 0x158]
cmp byte [r15 + 0x1370], sil
mov byte [rax], sil
mov rax, qword [rbx + 0x158]
je 0x1803b8478
mov byte [rax + 1], 2
mov rcx, qword [rbx + 0x158]
mov rax, qword [rbx + 0x10]
add rcx, 4
mov qword [rax + 0x1a0], rcx
mov rdx, qword [r15 + 0x11b8]
cmp rdx, 0xffffffffffffffff
je 0x1803b847c
mov rcx, r15
call fcn.1803aba10
jmp 0x1803b847c
mov byte [rax + 1], 1
mov rax, qword [rbx + 0x10]
lea r8, [rsp + 0x40]
xor r9d, r9d
mov dword [rsp + 0x20], 4
xor edx, edx
mov rcx, qword [rax + 0x1208]
inc rcx
call fcn.1803c7080
mov esi, eax
test eax, eax
jne 0x1803b8907
movsxd rdx, dword [rbx + 0x144]
mov rdi, 0xffffffffffffffff
mov rax, rdi
nop dword [rax]
inc rax
cmp byte [r14 + rax], 0
jne 0x1803b84c0
mov r9, qword [rsp + 0x40]
mov rcx, rdx
sub rcx, rax
mov rax, rdi
sub rcx, 4
nop dword [rax]
inc rax
cmp byte [r9 + rax], 0
jne 0x1803b84e0
cmp rax, rcx
jbe 0x1803b8513
lea rdx, str.TFTP_file_name_too_long
mov rcx, r15
call fcn.18039a620
mov rcx, qword [rsp + 0x40]
call qword [fcn.1803ea74c]
mov eax, 0x47
jmp 0x1803b8907
mov rcx, qword [rbx + 0x158]
lea r8, str._s_c_s_c
mov qword [rsp + 0x30], 0
add rcx, 2
mov qword [rsp + 0x28], r14
mov qword [rsp + 0x20], 0
call fcn.18039fd70
mov rcx, rdi
inc rcx
cmp byte [r14 + rcx], 0
jne 0x1803b8544
mov rdx, qword [rsp + 0x40]
mov rax, rdi
nop word [rax + rax]
cmp byte [rdx + rax + 1], 0
lea rax, [rax + 1]
jne 0x1803b8560
lea r14, [rax + 4]
add r14, rcx
cmp byte [r15 + 0xa9c], 0
jne 0x1803b8854
cmp byte [r15 + 0x1370], 0
je 0x1803b85ae
mov r9, qword [r15 + 0x11b8]
cmp r9, rdi
je 0x1803b85ae
lea r8, str._I64d
mov edx, 0x40
lea rcx, [rsp + 0x50]
call fcn.18039fd70
jmp 0x1803b85b8
mov eax, gethostbyaddr
mov word [rsp + 0x50], ax
movsxd rax, dword [rbx + 0x144]
lea r8, [r14 + 6]
cmp r8, rax
jbe 0x1803b85cf
lea rcx, [rsp + 0x50]
jmp 0x1803b8623
mov rdx, qword [rbx + 0x158]
lea rcx, str.tsize
add rdx, r14
movzx eax, byte [rcx]
lea rcx, [rcx + 1]
mov byte [rdx], al
lea rdx, [rdx + 1]
test al, al
jne 0x1803b85e0
lea rcx, [rsp + 0x50]
mov rax, rdi
nop dword [rax]
cmp byte [rcx + rax + 1], 0
lea rax, [rax + 1]
jne 0x1803b8600
lea rcx, [rax + 1]
movsxd rax, dword [rbx + 0x144]
add rcx, r8
cmp rcx, rax
lea rcx, [rsp + 0x50]
jbe 0x1803b8661
mov r9d, dword [rbx + 0x148]
lea r8, [0x180461208]
mov edx, 0x40
call fcn.18039fd70
mov r9d, dword [rbx + 0x24]
lea r8, [0x180461208]
mov edx, 0x40
lea rcx, [rsp + 0x50]
call fcn.18039fd70
lea rdx, str.TFTP_buffer_too_small_for_options
jmp 0x1803b84f6
mov rdx, qword [rbx + 0x158]
add rdx, r8
nop dword [rax + rax]
movzx eax, byte [rcx]
lea rcx, [rcx + 1]
mov byte [rdx], al
lea rdx, [rdx + 1]
test al, al
jne 0x1803b8670
lea rcx, [rsp + 0x50]
mov rax, rdi
nop dword [rax]
cmp byte [rcx + rax + 1], 0
lea rax, [rax + 1]
jne 0x1803b8690
mov r9d, dword [rbx + 0x148]
lea rsi, [rax + 1]
add rsi, r8
lea rcx, [rsp + 0x50]
lea r8, [0x180461208]
mov edx, 0x40
call fcn.18039fd70
movsxd rax, dword [rbx + 0x144]
lea r8, [rsi + 8]
cmp r8, rax
ja 0x1803b863b
mov rdx, qword [rbx + 0x158]
lea rcx, str.blksize
add rdx, rsi
nop dword [rax]
nop dword [rax + rax]
movzx eax, byte [rcx]
lea rcx, [rcx + 1]
mov byte [rdx], al
lea rdx, [rdx + 1]
test al, al
jne 0x1803b86f0
lea rcx, [rsp + 0x50]
mov rax, rdi
nop dword [rax]
cmp byte [rcx + rax + 1], 0
lea rax, [rax + 1]
jne 0x1803b8710
lea rcx, [rax + 1]
movsxd rax, dword [rbx + 0x144]
add rcx, r8
cmp rcx, rax
lea rcx, [rsp + 0x50]
jbe 0x1803b8754
mov r9d, dword [rbx + 0x24]
lea r8, [0x180461208]
mov edx, 0x40
call fcn.18039fd70
lea rdx, str.TFTP_buffer_too_small_for_options
jmp 0x1803b84f6
mov rdx, qword [rbx + 0x158]
add rdx, r8
nop
movzx eax, byte [rcx]
lea rcx, [rcx + 1]
mov byte [rdx], al
lea rdx, [rdx + 1]
test al, al
jne 0x1803b8760
lea rcx, [rsp + 0x50]
mov rax, rdi
nop dword [rax]
cmp byte [rcx + rax + 1], 0
lea rax, [rax + 1]
jne 0x1803b8780
mov r9d, dword [rbx + 0x24]
lea rsi, [rax + 1]
add rsi, r8
lea rcx, [rsp + 0x50]
lea r8, [0x180461208]
mov edx, 0x40
call fcn.18039fd70
movsxd rax, dword [rbx + 0x144]
lea r8, [rsi + 8]
cmp r8, rax
ja 0x1803b8655
mov rdx, qword [rbx + 0x158]
lea rcx, str.timeout
add rdx, rsi
movzx eax, byte [rcx]
lea rcx, [rcx + 1]
mov byte [rdx], al
lea rdx, [rdx + 1]
test al, al
jne 0x1803b87d1
lea rcx, [rsp + 0x50]
mov rax, rdi
nop word [rax + rax]
cmp byte [rcx + rax + 1], 0
lea rax, [rax + 1]
jne 0x1803b87f0
lea rcx, [rax + 1]
movsxd rax, dword [rbx + 0x144]
add rcx, r8
cmp rcx, rax
ja 0x1803b8655
mov rdx, qword [rbx + 0x158]
lea rcx, [rsp + 0x50]
add rdx, r8
movzx eax, byte [rcx]
lea rcx, [rcx + 1]
mov byte [rdx], al
lea rdx, [rdx + 1]
test al, al
jne 0x1803b8821
lea rax, [rsp + 0x50]
nop word [rax + rax]
cmp byte [rax + rdi + 1], 0
lea rdi, [rdi + 1]
jne 0x1803b8840
lea r14, [rdi + 1]
add r14, r8
xor esi, esi
mov rax, qword [r15 + 0x20]
xor r9d, r9d
mov rcx, qword [rbx + 0x18]
mov rdx, qword [rax + 0x58]
mov eax, dword [rdx + 0xc]
lea r8, [rdx + 0x10]
mov rdx, qword [rbx + 0x158]
mov dword [rsp + 0x28], eax
mov qword [rsp + 0x20], r8
mov r8d, r14d
call qword [sym.imp.WS2_32.dll_sendto]
movsxd rcx, eax
cmp rcx, r14
je 0x1803b88b4
call qword [sym.imp.WS2_32.dll_WSAGetLastError]
mov r8d, 0x100
lea rdx, [rbp - 0x70]
mov ecx, eax
call fcn.180387570
mov r8, rax
lea rdx, [0x180463308]
mov rcx, r15
call fcn.18039a620
mov rcx, qword [rsp + 0x40]
call qword [fcn.1803ea74c]
jmp 0x1803b8905
mov rcx, rbx
cmp byte [r15 + 0x1370], sil
je 0x1803b88e5
call fcn.1803b7af0
mov esi, eax
jmp 0x1803b8905
mov rcx, rbx
call fcn.1803b7af0
mov esi, eax
jmp 0x1803b8905
mov rcx, rbx
call fcn.1803b7aa0
mov esi, eax
jmp 0x1803b8905
mov dword [rbx], 3
jmp 0x1803b8905
lea rdx, str.tftp_send_first:_internal_error
mov rcx, r15
call fcn.18039a620
mov eax, esi
mov rcx, qword [rbp + 0x90]
xor rcx, rsp
call fcn.1803e3250
mov rbx, qword [rsp + 0x1e0]
add rsp, 0x1a0
pop r15
pop r14
pop rdi
pop rsi
pop rbp
ret
sub rsp, 0x28
mov r8d, dword [rcx]
mov r9, qword [rcx + 0x10]
test r8d, r8d
je 0x1803b8ab7
sub r8d, 1
je 0x1803b8aae
sub r8d, 1
je 0x1803b8aa5
lea rdx, [0x180463308]
mov rcx, r9
cmp r8d, 1
je 0x1803b8a92
lea r8, str.Internal_state_machine_error
call fcn.18039a620
mov eax, 0x47
add rsp, 0x28
ret
lea r8, str.TFTP_finished
call fcn.18039a710
xor eax, eax
add rsp, 0x28
ret
add rsp, 0x28
jmp fcn.1803b8c00
add rsp, 0x28
jmp fcn.1803b8060
add rsp, 0x28
jmp 0x1803b83a0