how to get char array value from std::string

[Deleted user]

I have hooked a function,which takes one filename param of string type, how do I print out the string char array value of it ?
this is on android arm .
void (*setbackgroundimage)(void *lay, const std::string& fileName, int);

[kotori2]

use cSharpString* fileName as param, and print fileName->buf
data in Il2cpp world is not using STL class

[Deleted user]

is this cSharpString struct got from ida ?

[kotori2]

No. That's from memory dump. oxpy <notifications@github.com> 于 2020年5月27日周三 21:25写道：

…

is this cSharpString struct got from ida ? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#4 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEGYNSK3E2BXVVPUIP7STT3RTUIFTANCNFSM4NLZSDMQ> .

[Deleted user]

May I ask how did you dump it from memory ? what tools are used ?
gdb ? ida script ?

[kotori2]

bRuH, you already injected into the game, what can stop you from dumping memory?
e.g.:

char* ptr = 0x7f1234abcd;
for(int i=0; i < 16; i++) LOGI("dump: %c", *(ptr+i));