Differences

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--- gdb [2017/09/20 00:10] – created fe80:a5b0:8fc5:656d:b429:1723:31ec:834e
+++ gdb [2024/11/14 06:58] (current) – A User Not Logged in
@@ Line 1: / Line 1: @@
-GDB cheatsheet:
+====== General ======
+attach to running process without break:
+  gdb attach -ex cont -iex "set pagination off" $(pidof process_name)
 <code>
@@ Line 7: / Line 11: @@
 x/li $eip
 x/8wx $esp
+end
+</code>
+====== Print Command ======
+print string pointed by $rdi:
+  x/s $rdi
+show bytes pointed by register with offset:
+  x/16bx $rsi+0x42
+print array with size as bytes in registers:
+  p/x *(char *)$rcx@$dx
+  p/x (char[size]) *$rcx
+====== Breakpoint ======
+break on address:
+  b *0xdeadbeef
+break at offset to function name:
+<code>
+b *(&func_name+0xbeef)
+b *(funcname+0xbeef)
+b *('class::method'+0xbeef)
 </code>
+set conditional breakpoint:
+  break dlopen if strcmp(file, "libc.so") == 0
+set logpoint:
+<code>
+break func_name
+commands
+  silent
+  printf "msg: %d\n", *($rdi+0xbeef)
+  cont
+end
+</code>