If you have /proc available, you don't even need to disable ASLR (all mappings are available to you)
replyHey you know what, I've used dd to write into process memory but haven't actually used it to disable KASLR, so it's possible I am misremembering. My bad.
reply:(
replySounds super 1337 and I hope it's actually possible somehow.
Parse /proc/<pid>/maps to find the relevant target_addr in your process-under-attack. And then its a matter of:
reply $ dd if=shellcode.bin of=/proc/<pid>/mem bs=1 seek=$((target_addr)) ...