set memory

https://stackoverflow.com/questions/26064612/in-gdb-can-you-set-memory-as-if-it-were-a-char-array

6

There’s alternative of writing char array in one command, without standard functions like strcpy().

set *(char [CHAR_ARRAY_SIZE] *) <WRITE_ADDRESS> = "YOUR_CHAR_ARRAY"

where CHAR_ARRAY_SIZE is the size of YOUR_CHAR_ARRAY, plus extra NULL byte (null-terminated string).

e.g.

set *(char [15] *) 0x20018000 = "Write a string"

https://stackoverflow.com/questions/19503057/in-gdb-how-can-i-write-a-string-to-memory

set {char [4]} 0x08040000 = "Ace"

https://stackoverflow.com/questions/3305164/how-to-modify-memory-contents-using-gdb

Writing memory:

(gdb) set *0x20001234 = 0xABABABAB

(gdb) set {int}0x08040000 = 42
(gdb) set {int}0x08040000 = 0xffffffff