add a pty for kctf vrp

register-Fork · Mar 29, 2021 · 99537d5 · 99537d5
1 parent 5dcf4a3
commit 99537d5
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Showing 3 changed files with 3 additions and 2 deletions.
diff --git a/vrp/level1/challenge/Dockerfile b/vrp/level1/challenge/Dockerfile
@@ -27,4 +27,4 @@ CMD kctf_setup && \
     kctf_drop_privs \
     socat \
       TCP-LISTEN:1337,reuseaddr,fork \
-      EXEC:"kctf_pow nsjail --config /home/user/nsjail.cfg -- /home/user/chal"
+      EXEC:"kctf_pow nsjail --config /home/user/nsjail.cfg -- /home/user/chal",pty,stderr,setsid,sigint,sane
diff --git a/vrp/level1/challenge/nsjail.cfg b/vrp/level1/challenge/nsjail.cfg
@@ -25,6 +25,7 @@ rlimit_as_type: HARD
 rlimit_nofile_type: HARD
 rlimit_nproc_type: HARD
 rlimit_cpu: 30
+skip_setsid: true
 max_cpus: 1
 mount: [
   {

diff --git a/vrp/level1/healthcheck/doit.py b/vrp/level1/healthcheck/doit.py
@@ -23,7 +23,7 @@ def handle_pow(r):
     p = pwnlib.tubes.process.process(['kctf_bypass_pow', challenge])
     solution = p.readall().strip()
     r.sendline(solution)
-    print(r.recvuntil(b'Correct\n'))
+    print(r.recvuntil(b'Correct'))
 
 r = pwnlib.tubes.remote.remote('127.0.0.1', 1337)
 print(r.recvuntil('== proof-of-work: '))