我正在学习如何使用boofuzz进行模糊测试。我在Windows 7 VM上安装了所有设备。目标是Vulnserver应用程序。由于我知道TRUN，GMON和KSTET命令容易受到攻击，因此我将这些命令放在s_group列表中。我希望vulnserver.exe进程在TRUN命令上崩溃，重启，然后继续测试其他命令。下面是我使用的boofuzz脚本。
#!/usr/bin/python
from boofuzz import *
from boofuzz import pedrpc
host = "172.16.37.201"
port = 9999
# Define request
s_initialize("Vulnserver")
s_group("verbs", values=["TRUN", "GMON", "KSTET"])
if s_block_start("test", group="verbs"):
s_delim(" ")
s_string("AAA")
s_string("\r\n")
s_block_end("test")
# Define Session
logger = FuzzLogger(fuzz_loggers=[FuzzLoggerText()])
session = sessions.Session(log_level=10, sleep_time=0.03, fuzz_data_logger=logger)
connection = SocketConnection(host, port, proto="tcp")
target = sessions.Target(connection)
target.procmon = pedrpc.Client(host, 26002)
target.procmon_options = {
"proc_name":"vulnserver.exe",
"stop_commands":['wmic process where (name="vulnserver.exe") delete'],
"start_commands":['C:\\Temp\\vulnserver.exe 9999'],
}
session.add_target(target)
session.connect(s_get("Vulnserver"))
session.fuzz()
启动vulnserver.exe后，运行我的boofuzz脚本并出现以下错误：
.....
+0c: 41414141 (1094795585) -> N/A
+10: 41414141 (1094795585) -> N/A
+14: 41414141 (1094795585) -> N/A
disasm around:
0x41414141 Unable to disassemble
SEH unwind:
ffffffff -> ntdll.dll:774d61a5 mov edi,edi
[2016-09-02 13:24:06,178] Test Case: 53
[2016-09-02 13:24:06,178] Info: primitive name: None, type: String, default value: AAA
[2016-09-02 13:24:06,178] Info: Test case 53 of 8352 for this node. 53 of 8352 overall.
Traceback (most recent call last):
File "auto.py", line 34, in <module>
session.fuzz()
File "C:\Python27\lib\site-packages\boofuzz\sessions.py", line 414, in fuzz
self._fuzz_current_case(*fuzz_args)
File "C:\Python27\lib\site-packages\boofuzz\sessions.py", line 846, in _fuzz_current_case
target.open()
File "C:\Python27\lib\site-packages\boofuzz\sessions.py", line 71, in open
self._target_connection.open()
File "C:\Python27\lib\site-packages\boofuzz\socket_connection.py", line 118, in open
self._sock.connect((self.host, self.port))
File "C:\Python27\lib\socket.py", line 228, in meth
return getattr(self._sock,name)(*args)
socket.error: [Errno 10061] No connection could be made because the target machine actively refused it
错误表明boofuzz没有重启vulnserver.exe进程。如果有帮助，下面是process_monitor.py的输出。
C:\Tools\boofuzz>python process_monitor.py --crash_bin "crash.bin" --proc_name "vulnserver.exe" --port 26002
[01:23.48] Process Monitor PED-RPC server initialized:
[01:23.48] crash file: C:\Tools\boofuzz\crash.bin
[01:23.48] # records: 0
[01:23.48] proc name: None
[01:23.48] log level: 1
[01:23.48] awaiting requests...
[01:24.01] updating target process name to 'vulnserver.exe'
[01:24.01] updating stop commands to: ['wmic process where (name="vulnserver.exe") delete']
[01:24.01] updating start commands to: ['C:\\Temp\\vulnserver.exe 9999']
[01:24.01] debugger thread-1472837041 looking for process name: vulnserver.exe
[01:24.01] debugger thread-1472837041 found match on pid 1060
[01:24.06] debugger thread-1472837041 caught access violation: '[INVALID]:41414141 Unable to disassemble at 41414141 from thread 1904 caused access violation'
[01:24.06] debugger thread-1472837041 exiting
[01:24.06] debugger thread-1472837046 looking for process name: vulnserver.exe
谢谢！
答案 0 :(得分：0)
重启失败是一系列错误的结果。运行pip install --upgrade boofuzz以获取v0.0.5或更高版本，或从Github下拉最新代码。
关键问题是procmon检测到的故障被记录为信息而非故障，这意味着未触发重启。 Fix PR
这一行：
socket.error: [Errno 10061] No connection could be made because the target machine actively refused it
暗示被测应用程序最有可能崩溃。 Boofuzz应该处理这个而不是崩溃。此问题一直是reported和fixed。
请在process_monitor.py输出中注明以下行：
[01:23.48] proc name: None
Proc名称未设置！错误发生在process_monitor.py第368行：
if opt in ("-p", "--proc_Name"): #oops!
应该是--proc_name而不是--proc_Name！
此问题在最新的代码中已fixed。但解决方法是使用短名称-p而不是--proc_name。