Add stuff

gdb.md

@@ -8,5 +8,52 @@
 - Go to end of function: `finish`
 - Create Breakpoint: `break <lineNr>`
     - Go on with `start` 
+    - Go no breakpoint: `c`
 - Inspect variable: `print <ariable>`
 
+- Refresh window when "broken": `ctrl + L`
+
+- Print: `p`
+
+## Debug Assembly
+- Load file
+- Enable assembly: `layout asm`
+- Start at first instruction: `starti`
+- Step through using `stepi (si)` and `nexti (ni)`
+
+- Show top $10$ elements of the stack: `x/10x $sp`
+
+## TUI
+- Change window: `CTRL + x o`
+
+- Previous/Next Command: `CTRL + P`/`CTRL + N`
+
+- Change size: `winheight <window> <+/-> <size>`
+    - When leaving out `<+/->` it is set to absolute size
+
+
+- Execute command `n` times: `python [gdb.execute('<YOUR_COMMAND>') for x in range(n)]`
+
+##
+- Disassemble function: `disassemble <function>`
+
+## Breakpoint
+- At function + offset: `b *FUNC+OFFSET`
+- At Address: `b *ADDR`
+
+## Stripped Binaries
+
+### Entry Point
+- Sometimes this works: `b __libc_start_main`
+    - Only works when dynamic libraries (libc) were loaded (which is only after start of program)
+    - When hitting this breakpoint, GDB tells us the location of main, which is the first argument to `__libc_start_main`
+- `(gdb) info file` tells the entry point address
+
+x
+x/s
+x/10xw 32 bit
+x/10xX 64 bit
+
+
+vmmap gives overwie of virtual memory
+