2 files changed, 76 insertions, 3 deletions
diff --git a/md/writeup/compile_linux_kernel.md b/md/writeup/compile_linux_kernel.md
index 1682125..a92d210 100644
--- a/md/writeup/compile_linux_kernel.md
+++ b/md/writeup/compile_linux_kernel.md
@@ -1,11 +1,66 @@
 # Getting sources
 
-## Installing modules
+To get main repo kernel
 
+Default kernel is located here
+
+```
+git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
+```
+
+There is whole list of different kernels maintainer ones and much
+more.
+
+```
+https://git.kernel.org/cgit/
+```
+
+some distros have their own kernels. Here whole list of kernels
+based on ubuntu version
+
+```
+http://kernel.ubuntu.com/git/
+```
+
+And also there is little different native kernel building ways for some distros
+
+# Compiling
+
+Run to configure kernel
+```
+make menuconfig
+```
+
+config is saved in _.config_ file. And now we are ready to
+compile our first kernel
+
+```
+make
+```
+
+<!--
 ## Compile module
+-->
+
 
 # Linux patches
 
-## Gr security
 
-## Tomoyo
-\ No newline at end of file
+## Grsecurity
+
+Linux security enhancments
+
+https://grsecurity.net/
+
+## Tomoyo
+
+MAC based securty mechanism
+
+http://tomoyo.osdn.jp/
+
+# Links
+
+1. https://git.kernel.org/cgit/
+2. https://wiki.ubuntu.com/Kernel/SourceCode
+3. https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel
+4. https://fedoraproject.org/wiki/Building_a_custom_kernel
diff --git a/md/writeup/devices/ew-7438rpn.md b/md/writeup/devices/ew-7438rpn.md
new file mode 100644
index 0000000..ec1d928
--- /dev/null
+++ b/md/writeup/devices/ew-7438rpn.md
@@ -0,0 +1,18 @@
+# EW-7483Rpn
+
+## Hardware
+
+| Hardware | Model |
+| --- | --- |
+| CPU | RTL8196EU |
+| Wifi | RTL8192ER |
+| Flash | 25L1606 |
+
+## Dumps
+
+SPI flash dumps
+
+| Format | Dump | SHA1 Hash |
+| --- | --- | --- |
+| ihex | [dump_7438.hex](ew7438/dump_7438.hex) | e748588b0b89f6a182f5e65e2bb8a639439fc2d3 | 
+| binary| [dump_7438.bin](ew7438/dump_7438.bin) | 16e9cbe86a1905b398d19da34fae6654cda5d922 |
+\ No newline at end of file