- ignore *.o files

- makefile: dont rebuild unchanged sources
- socket.asm: bind(), not done actually

1 files changed, 17 insertions, 3 deletions

diff --git a/shellcode/socket.asm b/shellcode/socket.asm
index e5b1e9d..731383f 100644
--- a/shellcode/socket.asm
+++ b/shellcode/socket.asm
@@ -1,13 +1,27 @@
 BITS 32
 
-; zero out eax
-xor		eax,eax
 
 ; socket()
+xor		eax,eax		; zero out eax
 push		eax		; push 0x0 on the stack: arg3(protocol) -> 0
 mov		ebx,0x01	; socket sub-syscall: 0x01 -> socket()
 push		0x01		; socket type: 0x01 -> SOCK_STREAM
 push		0x02		; socket domain: 0x02 -> AF_INET
 mov		ecx,esp		; let ecx point to our structure above
-mov		al,102		; syscall 0x66 (socket())
+mov		al,0x66		; socketcall syscall 0x66
+int		0x80		; let the kernel do the stuff
+
+; bind()
+mov		edx,eax		; move socket descriptor (returned by socket()) to edx
+xor		eax,eax		; zero out eax again
+push		0xBBBB		; push ip addr
+push		0x00AA		; push tcp port
+push		0x0002		; sa_family -> AF_INET = 0x0002
+mov		ecx,esp		; save stack pointer -> pointer to sockaddr struct
+push		0x12		; arg3: socklen -> addrlen
+push		ecx		; arg2: push pointer to sockaddr to the stack
+push		edx		; arg1: push sockfd
+mov		ecx,esp		; move stack pointer to reg (conform to socketcall)
+mov		ebx,0x02	; set socket subcall to 0x03 (bind)
+mov		al,0x66		; socketcall syscall
 int		0x80		; let the kernel do the stuff