enowars5-service-stldoctor

STL-Analyzing A/D Service for ENOWARS5 in 2021
git clone https://git.sinitax.com/sinitax/enowars5-service-stldoctor
Log | Files | Refs | README | LICENSE | sfeed.txt
commit 9c24455a07b6c743239f3301475ad656b702a627
parent 3fbf5317832f3f78918a2cd76e85b9fa3d1af381
Author: Louis Burda <quent.burda@gmail.com>
Date:   Wed, 30 Jun 2021 11:00:21 +0200

add new havoc which uploads stl models with real objects in them for fluff

Diffstat:

Mchecker/Dockerfile | 1-


Achecker/src/.gitignore | 1+


Mchecker/src/checker.py | 36++++++++++++++++++++++++++----------


Achecker/src/models/build.sh | 23+++++++++++++++++++++++


Achecker/src/models/cubes-ascii.stl | 506+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


Achecker/src/models/cubes-bin.stl | 0


Achecker/src/models/cubes.scad | 13+++++++++++++


Achecker/src/models/cubes.stl | 506+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


Achecker/src/models/flag-ascii.stl | 618+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


Achecker/src/models/flag-bin.stl | 0


Achecker/src/models/flag.scad | 12++++++++++++


Achecker/src/models/flag.stl | 282+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


Achecker/src/models/syringe-ascii.stl | 1934+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


Achecker/src/models/syringe-bin.stl | 0


Achecker/src/models/syringe.scad | 24++++++++++++++++++++++++


Achecker/src/models/syringe.stl | 0


Mservice/src/main.c | 2+-


Msrc/main.c | 2+-


Msrc/msgs/motd | 4++--


19 files changed, 3949 insertions(+), 15 deletions(-)

diff --git a/checker/Dockerfile b/checker/Dockerfile
@@ -19,7 +19,6 @@ USER checker
 RUN python3 -m pip install --no-warn-script-location -r requirements.txt
 
 # build extras
-ENV REVHASH_PATH=/checker/revhash/revhash
 RUN cd /checker/revhash && make
 
 ENTRYPOINT [ "/home/checker/.local/bin/gunicorn", "-c", "gunicorn.conf.py", "checker:app" ]
diff --git a/checker/src/.gitignore b/checker/src/.gitignore
@@ -0,0 +1 @@
+__pycache__
diff --git a/checker/src/checker.py b/checker/src/checker.py
@@ -28,6 +28,11 @@ endsolid test\xff
 
 generic_alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmopqrstuvwxyz0123456789-+.!"
 
+script_path = os.path.dirname(os.path.realpath(__file__))
+models_path = f"{script_path}/models"
+extra_models = [f"{models_path}/{path}" for path in \
+        os.listdir(models_path) if path.endswith(".stl")]
+
 def ensure_bytes(v):
     if type(v) == bytes:
         return v
@@ -64,7 +69,7 @@ def approx_equal(f1, f2, precision = 2):
 def reverse_hash(hashstr):
     if type(hashstr) is bytes:
         hashstr = hashstr.decode()
-    data = subprocess.check_output([os.getenv("REVHASH_PATH"), hashstr])[:-1]
+    data = subprocess.check_output([f"{script_path}/revhash/revhash", hashstr])[:-1]
     if data == b"":
         raise BrokenServiceException(f"Failed to find hash preimage of {hashstr}")
     return data
@@ -104,7 +109,7 @@ class STLDoctorChecker(BaseChecker):
 
     flag_variants = 2
     noise_variants = 2
-    havoc_variants = 16
+    havoc_variants = 17
     exploit_variants = 2
 
     prompt = b"\r$ "
@@ -298,9 +303,8 @@ class STLDoctorChecker(BaseChecker):
         conn.write(stlfile)
 
         # Check for errors
-        _ = conn.recvline() # Modelname:
-        line = conn.recvline()
-        if b"ERR:" in line:
+        resp = conn.recvline() + conn.recvline()
+        if b"ERR:" in resp:
             if check:
                 raise BrokenServiceException(f"Failed to upload model {modelname}:\n{line}")
             conn.recvuntil(self.prompt)
@@ -308,7 +312,7 @@ class STLDoctorChecker(BaseChecker):
 
         # Parse ID
         try:
-            modelid = line.rsplit(b"!", 1)[0].split(b"with ID ", 1)[1]
+            modelid = resp.rsplit(b"!", 1)[0].split(b"with ID ", 1)[1]
             if modelid == b"": raise Exception
         except:
             raise BrokenServiceException(f"Invalid response during upload of {modelname}:\n{line}")
@@ -633,6 +637,19 @@ class STLDoctorChecker(BaseChecker):
             self.test_list(False)
         elif self.variant_id == 15:
             self.test_list(True)
+        elif self.variant_id == 16:
+            if len(extra_models) == 0:
+                return
+            # upload spicy models
+            conn = self.openconn()
+            model = rand.choice(extra_models)
+            modelname = os.path.basename(model).split("-")[0]
+            modelname += "".join([rand.choice("0123456789") for i in range(5)])
+            stlfile = open(model, "rb").read()
+            self.debug(stlfile)
+            modelid = self.do_upload(conn, modelname, stlfile)
+            self.check_in_search(conn, modelname, [modelname, modelid, stlfile], download = True)
+            self.closeconn(conn)
         else:
             raise EnoException(f"Invalid havoc variant ({self.variant_id}) provided")
 
@@ -680,11 +697,11 @@ class STLDoctorChecker(BaseChecker):
                 raise BrokenServiceException("Exploit did not set 'loggedin' variable via overflow")
 
             # Get private user hashes via 'list'
-            resp = self.do_list(conn)
+            resp = self.do_list(conn, check=False)
+            if not resp:
+                raise BrokenServiceException("")
             self.debug("List response: " + str(resp))
             users = [l.split(b" .")[1] for l in resp.split(b"\n") if b">> ." in l]
-            if len(users) == 0:
-                raise BrokenServiceException("Unable to list private user hashes")
             self.closeconn(conn)
 
             # Login as each private user
@@ -706,7 +723,6 @@ class STLDoctorChecker(BaseChecker):
 
                 # List all private files of user
                 resp = self.do_list(conn)
-                self.closeconn(conn)
 
                 # Search for flag in solid names
                 names = b"\n".join([l.split(b": ", 1)[1] for l in resp.split(b"\n") if b"Solid Name: " in l])
diff --git a/checker/src/models/build.sh b/checker/src/models/build.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+gen() {
+	output=$(openscad --export-format $1 $2 -o $3 2>&1)
+	if [ $? -ne 0 ]; then
+		echo "OPENSCAD LOG:"
+		echo "$output"
+		exit 1
+	fi
+	size=$(($(cat $3 | wc -c)))
+	printf "GEN %-20s: " "$3"
+	if [ $size -ge 50000 ]; then
+		echo "skipped (too large)"
+		rm "$3"
+	else
+		echo "done"
+	fi
+}
+
+for fname in $(ls *.scad); do
+	gen binstl $fname ${fname%.scad}-bin.stl
+	gen asciistl $fname ${fname%.scad}-ascii.stl
+done
diff --git a/checker/src/models/cubes-ascii.stl b/checker/src/models/cubes-ascii.stl
@@ -0,0 +1,506 @@
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+  facet normal -0 0 1
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+endsolid OpenSCAD_Model
diff --git a/checker/src/models/cubes-bin.stl b/checker/src/models/cubes-bin.stl
Binary files differ.
diff --git a/checker/src/models/cubes.scad b/checker/src/models/cubes.scad
@@ -0,0 +1,13 @@
+cube_size = 10;
+
+translate([-cube_size/2, 0, 0])
+	rotate(70, [0, 0, 1])
+		cube(cube_size, center = true);
+translate([cube_size*2/3, -cube_size*2/3, 0])
+	rotate(25, [0, 0, 1])
+		cube(cube_size, center = true);
+translate([cube_size*2/3, cube_size/2, 0])
+	rotate(5, [0, 0, 1])
+		cube(cube_size, center = true);
+translate([cube_size/3, 0, cube_size])
+	cube(cube_size, center = true);
diff --git a/checker/src/models/cubes.stl b/checker/src/models/cubes.stl
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diff --git a/checker/src/models/flag-ascii.stl b/checker/src/models/flag-ascii.stl
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diff --git a/checker/src/models/flag-bin.stl b/checker/src/models/flag-bin.stl
Binary files differ.
diff --git a/checker/src/models/flag.scad b/checker/src/models/flag.scad
@@ -0,0 +1,12 @@
+$fn = 20;
+
+thickness = 1;
+
+pole_height = 30;
+
+flag_height = 5;
+flag_width = 10;
+
+cylinder(h = pole_height, r = thickness / 2);
+translate([0, -thickness/2, pole_height - flag_height])
+	cube([flag_width, thickness, flag_height]);
diff --git a/checker/src/models/flag.stl b/checker/src/models/flag.stl
@@ -0,0 +1,282 @@
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diff --git a/checker/src/models/syringe-ascii.stl b/checker/src/models/syringe-ascii.stl
@@ -0,0 +1,1934 @@
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diff --git a/checker/src/models/syringe-bin.stl b/checker/src/models/syringe-bin.stl
Binary files differ.
diff --git a/checker/src/models/syringe.scad b/checker/src/models/syringe.scad
@@ -0,0 +1,24 @@
+$fn = 20;
+
+base_height = 1;
+base_radius = 10;
+
+pipe_height = 10;
+pipe_radius = 2;
+
+main_radius = base_radius - 2;
+main_height = 50;
+
+needle_radius = 0.5;
+needle_height = 40;
+
+cylinder(r = base_radius, h = base_height);
+translate([0, 0, base_height]) {
+	cylinder(r = pipe_radius, h = pipe_height);
+	translate([0, 0, pipe_height]) {
+		cylinder(r = main_radius, h = main_height);
+		translate([0, 0, needle_height]) {
+			cylinder(r = needle_radius, h = needle_height, $fn=10);
+		}
+	}
+}
diff --git a/checker/src/models/syringe.stl b/checker/src/models/syringe.stl
Binary files differ.
diff --git a/service/src/main.c b/service/src/main.c
@@ -11,7 +11,7 @@
 #include "stlfile.h"
 #include "util.h"
 
-#define MAXFILESIZE 7000
+#define MAXFILESIZE 50000
 
 struct command {
 	const char *name;
diff --git a/src/main.c b/src/main.c
@@ -11,7 +11,7 @@
 #include "stlfile.h"
 #include "util.h"
 
-#define MAXFILESIZE 7000
+#define MAXFILESIZE 50000 // 20kB file limit
 
 struct command {
 	const char *name;
diff --git a/src/msgs/motd b/src/msgs/motd
@@ -8,8 +8,8 @@
  Keep your files small, size matters!
  Use 'search' to find models by name!
    ENO.. is a popular solid name!
-    STeaLing flags since 2006!
-    C4n y0u r34d th1s? 🏁 ➡️ 📁
+     STLing flags since 2006!
+    C4n y0u r34d th1s? 🏁➡️ 📁
     ( *ಥ ⌂  * ) dont pwn pls
    *finds file* UwU whats this?