Failed to get connection from a remote gdb process

[ghost]

iPhone7+ 11.3.1

iPhone7p:/ root# ps ax | grep demo

1258   ??  Ss     0:04.92 /var/containers/Bundle/Application/88B0CCF1-87B6-4732-BC86-C127F382A185/demo.app/demo

iPhone7p:/ root# /electra/jailbreakd_client 1258 1
iPhone7p:/ root# /Developer/usr/bin/debugserver *:6666 -a 1258

debugserver-@(#)PROGRAM:LLDB  PROJECT:lldb-900.3.57..2 for arm64.
Attaching to process 1258...
Listening to port 6666 for a connection from *...
Failed to get connection from a remote gdb process.
Exiting.

iPhone7p:/ root#

ldid -e debugserver > debugserver.entitlements
open debugserver.entitlements and set
get-task-allow YES
task_for_pid_allow YES
ldid -Sdebugserver.entitlements debugserver
scp debugserver [email protected]:/usr/bin/
chmod +x /usr/bin/debugserver
debugserver *:6666 -a 1286
Killed: 9

[jakeajames]

Don't forget platform-application

[zhouzhuhao]

Did anyone fixed this problem?

[CoderYQ]

well，you should adjust debugserver some permissions，just like this：

firstly, use this command to get plist: 'ldid -e debugserver > debugserver.entitlements'

edit the debugserver.entitlements like this,

add get-task-allow = YES;
add task_for_pid-allow = YES;
delete com.apple.security.network.server;
delete com.apple.security.network.client;
delete seatbelt-profiles;

and then use this command to rebuild: 'ldid -Sdebugserver.entitlements debugserver'

enjoy !

[crifan]

Summary:

1. for debugserver's entitlement:

• remove
  • com.apple.security.network.server
  • com.apple.security.network.client
  • seatbelt-profiles
• add
  • get-task-allow
  • task_for_pid-allow
  • run-unsigned-code

saved to debugserver_entitlement_debuggable.xml

2. then re-codesign:

codesign -f -s - --entitlements debugserver_entitlement_debuggable.xml debugserver

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For details, see my other answer: ios - iOS11 JB debugserver Failed to get connection from a remote gdb process - Stack Overflow