LoRexxar's Blog

sqlmap 源码分析(三)在注入之前

2016/08/16

sqlmap是web狗永远也绕不过去的神器,为了能自由的使用sqlmap,阅读源码还是有必要的…

开始

在初始化完成后,就进入了正式的测试环节
start()

直连数据库方式

初始化目标环境

没什么特殊的,有一部分是设置了urlencode过的post参数

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if conf.data:
class _(unicode):
pass
kb.postUrlEncode = True
for key, value in conf.httpHeaders:
if key.upper() == HTTP_HEADER.CONTENT_TYPE.upper():
kb.postUrlEncode = "urlencoded" in value
break
if kb.postUrlEncode:
original = conf.data
conf.data = _(urldecode(conf.data))
setattr(conf.data, UNENCODED_ORIGINAL_VALUE, original)
kb.postSpaceToPlus = '+' in original

创建输出的储存文件

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def setupTargetEnv():
_createTargetDirs()
_setRequestParams()
_setHashDB()
_resumeHashDBValues()
_setResultsFile()
_setAuthCred()

创建文件

_createTargetDirs()

检查并创建文件作为输出目录,如果出现系统错误,爆出相应的警告

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try:
if not os.path.isdir(paths.SQLMAP_OUTPUT_PATH):
os.makedirs(paths.SQLMAP_OUTPUT_PATH, 0755)
_ = os.path.join(paths.SQLMAP_OUTPUT_PATH, randomStr())
open(_, "w+b").close()
os.remove(_)
if conf.outputDir:
warnMsg = "using '%s' as the output directory" % paths.SQLMAP_OUTPUT_PATH
logger.warn(warnMsg)
except (OSError, IOError), ex:
try:
tempDir = tempfile.mkdtemp(prefix="sqlmapoutput")
except Exception, _:
errMsg = "unable to write to the temporary directory ('%s'). " % _
errMsg += "Please make sure that your disk is not full and "
errMsg += "that you have sufficient write permissions to "
errMsg += "create temporary files and/or directories"
raise SqlmapSystemException(errMsg)

写入基本信息

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try:
with codecs.open(os.path.join(conf.outputPath, "target.txt"), "w+", UNICODE_ENCODING) as f:
f.write(kb.originalUrls.get(conf.url) or conf.url or conf.hostname)
f.write(" (%s)" % (HTTPMETHOD.POST if conf.data else HTTPMETHOD.GET))
if conf.data:
f.write("\n\n%s" % getUnicode(conf.data))
except IOError, ex:
if "denied" in getUnicode(ex):
errMsg = "you don't have enough permissions "
else:
errMsg = "something went wrong while trying "
errMsg += "to write to the output directory '%s' (%s)" % (paths.SQLMAP_OUTPUT_PATH, getSafeExString(ex))
raise SqlmapMissingPrivileges(errMsg)

创建dump文件夹

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def _createDumpDir():
"""
Create the dump directory.
"""
if not conf.dumpTable and not conf.dumpAll and not conf.search:
return
conf.dumpPath = paths.SQLMAP_DUMP_PATH % conf.hostname
if not os.path.isdir(conf.dumpPath):
try:
os.makedirs(conf.dumpPath, 0755)
except OSError, ex:
tempDir = tempfile.mkdtemp(prefix="sqlmapdump")
warnMsg = "unable to create dump directory "
warnMsg += "'%s' (%s). " % (conf.dumpPath, getUnicode(ex))
warnMsg += "Using temporary directory '%s' instead" % tempDir
logger.warn(warnMsg)
conf.dumpPath = tempDir

创建文件文件夹

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def _createFilesDir():
"""
Create the file directory.
"""
if not conf.rFile:
return
conf.filePath = paths.SQLMAP_FILES_PATH % conf.hostname
if not os.path.isdir(conf.filePath):
try:
os.makedirs(conf.filePath, 0755)
except OSError, ex:
tempDir = tempfile.mkdtemp(prefix="sqlmapfiles")
warnMsg = "unable to create files directory "
warnMsg += "'%s' (%s). " % (conf.filePath, getUnicode(ex))
warnMsg += "Using temporary directory '%s' instead" % tempDir
logger.warn(warnMsg)
conf.filePath = tempDir

检查post data中的参数

_setRequestParams()

检查参数

这里检查post中的所有参数

执行对参数的检查,其中parameters就是get的参数,conf.data则是post的参数

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# Perform checks on GET parameters
if conf.parameters.get(PLACE.GET):
parameters = conf.parameters[PLACE.GET]
paramDict = paramToDict(PLACE.GET, parameters)
if paramDict:
conf.paramDict[PLACE.GET] = paramDict
testableParameters = True
# Perform checks on POST parameters
if conf.method == HTTPMETHOD.POST and conf.data is None:
logger.warn("detected empty POST body")
conf.data = ""

判断是不是存在注入标志位

在sqlmap中*号是为手动标志的注入位置,这里的CUSTOM_INJECTION_MARK_CHAR就是星号

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def process(match, repl):
retVal = match.group(0)
if not (conf.testParameter and match.group("name") not in conf.testParameter):
retVal = repl
while True:
_ = re.search(r"\\g<([^>]+)>", retVal)
if _:
retVal = retVal.replace(_.group(0), match.group(int(_.group(1)) if _.group(1).isdigit() else _.group(1)))
else:
break
if CUSTOM_INJECTION_MARK_CHAR in retVal:
hintNames.append((retVal.split(CUSTOM_INJECTION_MARK_CHAR)[0], match.group("name")))
return retVal
if kb.processUserMarks is None and CUSTOM_INJECTION_MARK_CHAR in conf.data:
message = "custom injection marking character ('%s') found in option " % CUSTOM_INJECTION_MARK_CHAR
message += "'--data'. Do you want to process it? [Y/n/q] "
test = readInput(message, default="Y")
if test and test[0] in ("q", "Q"):
raise SqlmapUserQuitException
else:
kb.processUserMarks = not test or test[0] not in ("n", "N")
if kb.processUserMarks:
kb.testOnlyCustom = True

JSON数据处理

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if not (kb.processUserMarks and CUSTOM_INJECTION_MARK_CHAR in conf.data):
if re.search(JSON_RECOGNITION_REGEX, conf.data):
message = "JSON data found in %s data. " % conf.method
message += "Do you want to process it? [Y/n/q] "
test = readInput(message, default="Y")
if test and test[0] in ("q", "Q"):
raise SqlmapUserQuitException
elif test[0] not in ("n", "N"):
conf.data = getattr(conf.data, UNENCODED_ORIGINAL_VALUE, conf.data)
conf.data = conf.data.replace(CUSTOM_INJECTION_MARK_CHAR, ASTERISK_MARKER)
conf.data = re.sub(r'("(?P<name>[^"]+)"\s*:\s*"[^"]+)"', functools.partial(process, repl=r'\g<1>%s"' % CUSTOM_INJECTION_MARK_CHAR), conf.data)
conf.data = re.sub(r'("(?P<name>[^"]+)"\s*:\s*)(-?\d[\d\.]*\b)', functools.partial(process, repl=r'\g<0>%s' % CUSTOM_INJECTION_MARK_CHAR), conf.data)
match = re.search(r'(?P<name>[^"]+)"\s*:\s*\[([^\]]+)\]', conf.data)
if match and not (conf.testParameter and match.group("name") not in conf.testParameter):
_ = match.group(2)
_ = re.sub(r'("[^"]+)"', '\g<1>%s"' % CUSTOM_INJECTION_MARK_CHAR, _)
_ = re.sub(r'(\A|,|\s+)(-?\d[\d\.]*\b)', '\g<0>%s' % CUSTOM_INJECTION_MARK_CHAR, _)
conf.data = conf.data.replace(match.group(0), match.group(0).replace(match.group(2), _))
kb.postHint = POST_HINT.JSON
elif re.search(JSON_LIKE_RECOGNITION_REGEX, conf.data):
message = "JSON-like data found in %s data. " % conf.method
message += "Do you want to process it? [Y/n/q] "
test = readInput(message, default="Y")
if test and test[0] in ("q", "Q"):
raise SqlmapUserQuitException
elif test[0] not in ("n", "N"):
conf.data = getattr(conf.data, UNENCODED_ORIGINAL_VALUE, conf.data)
conf.data = conf.data.replace(CUSTOM_INJECTION_MARK_CHAR, ASTERISK_MARKER)
conf.data = re.sub(r"('(?P<name>[^']+)'\s*:\s*'[^']+)'", functools.partial(process, repl=r"\g<1>%s'" % CUSTOM_INJECTION_MARK_CHAR), conf.data)
conf.data = re.sub(r"('(?P<name>[^']+)'\s*:\s*)(-?\d[\d\.]*\b)", functools.partial(process, repl=r"\g<0>%s" % CUSTOM_INJECTION_MARK_CHAR), conf.data)
kb.postHint = POST_HINT.JSON_LIKE

数组数据处理

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elif re.search(ARRAY_LIKE_RECOGNITION_REGEX, conf.data):
message = "Array-like data found in %s data. " % conf.method
message += "Do you want to process it? [Y/n/q] "
test = readInput(message, default="Y")
if test and test[0] in ("q", "Q"):
raise SqlmapUserQuitException
elif test[0] not in ("n", "N"):
conf.data = conf.data.replace(CUSTOM_INJECTION_MARK_CHAR, ASTERISK_MARKER)
conf.data = re.sub(r"(=[^%s]+)" % DEFAULT_GET_POST_DELIMITER, r"\g<1>%s" % CUSTOM_INJECTION_MARK_CHAR, conf.data)
kb.postHint = POST_HINT.ARRAY_LIKE

SOAP/XML数据处理

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elif re.search(XML_RECOGNITION_REGEX, conf.data):
message = "SOAP/XML data found in %s data. " % conf.method
message += "Do you want to process it? [Y/n/q] "
test = readInput(message, default="Y")
if test and test[0] in ("q", "Q"):
raise SqlmapUserQuitException
elif test[0] not in ("n", "N"):
conf.data = getattr(conf.data, UNENCODED_ORIGINAL_VALUE, conf.data)
conf.data = conf.data.replace(CUSTOM_INJECTION_MARK_CHAR, ASTERISK_MARKER)
conf.data = re.sub(r"(<(?P<name>[^>]+)( [^<]*)?>)([^<]+)(</\2)", functools.partial(process, repl=r"\g<1>\g<4>%s\g<5>" % CUSTOM_INJECTION_MARK_CHAR), conf.data)
kb.postHint = POST_HINT.SOAP if "soap" in conf.data.lower() else POST_HINT.XML

Multipart-like数据处理

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elif re.search(MULTIPART_RECOGNITION_REGEX, conf.data):
message = "Multipart-like data found in %s data. " % conf.method
message += "Do you want to process it? [Y/n/q] "
test = readInput(message, default="Y")
if test and test[0] in ("q", "Q"):
raise SqlmapUserQuitException
elif test[0] not in ("n", "N"):
conf.data = getattr(conf.data, UNENCODED_ORIGINAL_VALUE, conf.data)
conf.data = conf.data.replace(CUSTOM_INJECTION_MARK_CHAR, ASTERISK_MARKER)
conf.data = re.sub(r"(?si)((Content-Disposition[^\n]+?name\s*=\s*[\"'](?P<name>[^\n]+?)[\"']).+?)(((\r)?\n)+--)", functools.partial(process, repl=r"\g<1>%s\g<4>" % CUSTOM_INJECTION_MARK_CHAR), conf.data)
kb.postHint = POST_HINT.MULTIPART

后面还有各种处理,包括cookie,请求头的处理

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# Perform checks on Cookie parameters
if conf.cookie:
conf.parameters[PLACE.COOKIE] = conf.cookie
paramDict = paramToDict(PLACE.COOKIE, conf.cookie)
if paramDict:
conf.paramDict[PLACE.COOKIE] = paramDict
testableParameters = True
# Perform checks on header values
if conf.httpHeaders:
for httpHeader, headerValue in list(conf.httpHeaders):
# Url encoding of the header values should be avoided
# Reference: http://stackoverflow.com/questions/5085904/is-ok-to-urlencode-the-value-in-headerlocation-value
if httpHeader.title() == HTTP_HEADER.USER_AGENT:
conf.parameters[PLACE.USER_AGENT] = urldecode(headerValue)
condition = any((not conf.testParameter, intersect(conf.testParameter, USER_AGENT_ALIASES, True)))
if condition:
conf.paramDict[PLACE.USER_AGENT] = {PLACE.USER_AGENT: headerValue}
testableParameters = True
elif httpHeader.title() == HTTP_HEADER.REFERER:
conf.parameters[PLACE.REFERER] = urldecode(headerValue)
condition = any((not conf.testParameter, intersect(conf.testParameter, REFERER_ALIASES, True)))
if condition:
conf.paramDict[PLACE.REFERER] = {PLACE.REFERER: headerValue}
testableParameters = True
elif httpHeader.title() == HTTP_HEADER.HOST:
conf.parameters[PLACE.HOST] = urldecode(headerValue)
condition = any((not conf.testParameter, intersect(conf.testParameter, HOST_ALIASES, True)))
if condition:
conf.paramDict[PLACE.HOST] = {PLACE.HOST: headerValue}
testableParameters = True
else:
condition = intersect(conf.testParameter, [httpHeader], True)
if condition:
conf.parameters[PLACE.CUSTOM_HEADER] = str(conf.httpHeaders)
conf.paramDict[PLACE.CUSTOM_HEADER] = {httpHeader: "%s,%s%s" % (httpHeader, headerValue, CUSTOM_INJECTION_MARK_CHAR)}
conf.httpHeaders = [(header, value.replace(CUSTOM_INJECTION_MARK_CHAR, "")) for header, value in conf.httpHeaders]
testableParameters = True

还有很多错误处理,就没必要贴了

crsf token的处理

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if conf.csrfToken:
if not any(conf.csrfToken in _ for _ in (conf.paramDict.get(PLACE.GET, {}), conf.paramDict.get(PLACE.POST, {}))) and not re.search(r"\b%s\b" % re.escape(conf.csrfToken), conf.data or "") and not conf.csrfToken in set(_[0].lower() for _ in conf.httpHeaders) and not conf.csrfToken in conf.paramDict.get(PLACE.COOKIE, {}):
errMsg = "anti-CSRF token parameter '%s' not " % conf.csrfToken
errMsg += "found in provided GET, POST, Cookie or header values"
raise SqlmapGenericException(errMsg)
else:
for place in (PLACE.GET, PLACE.POST, PLACE.COOKIE):
for parameter in conf.paramDict.get(place, {}):
if any(parameter.lower().count(_) for _ in CSRF_TOKEN_PARAMETER_INFIXES):
message = "%s parameter '%s' appears to hold anti-CSRF token. " % (place, parameter)
message += "Do you want sqlmap to automatically update it in further requests? [y/N] "
test = readInput(message, default="N")
if test and test[0] in ("y", "Y"):
conf.csrfToken = parameter
break

设置储存的数据库

sqlmap默认使用的是sqlite

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def _setHashDB():
"""
Check and set the HashDB SQLite file for query resume functionality.
"""
if not conf.hashDBFile:
conf.hashDBFile = conf.sessionFile or os.path.join(conf.outputPath, "session.sqlite")
if os.path.exists(conf.hashDBFile):
if conf.flushSession:
try:
os.remove(conf.hashDBFile)
logger.info("flushing session file")
except OSError, msg:
errMsg = "unable to flush the session file (%s)" % msg
raise SqlmapFilePathException(errMsg)
conf.hashDB = HashDB(conf.hashDBFile)

储存基本信息到数据库

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def _resumeHashDBValues():
"""
Resume stored data values from HashDB
"""
kb.absFilePaths = hashDBRetrieve(HASHDB_KEYS.KB_ABS_FILE_PATHS, True) or kb.absFilePaths
kb.brute.tables = hashDBRetrieve(HASHDB_KEYS.KB_BRUTE_TABLES, True) or kb.brute.tables
kb.brute.columns = hashDBRetrieve(HASHDB_KEYS.KB_BRUTE_COLUMNS, True) or kb.brute.columns
kb.chars = hashDBRetrieve(HASHDB_KEYS.KB_CHARS, True) or kb.chars
kb.dynamicMarkings = hashDBRetrieve(HASHDB_KEYS.KB_DYNAMIC_MARKINGS, True) or kb.dynamicMarkings
kb.xpCmdshellAvailable = hashDBRetrieve(HASHDB_KEYS.KB_XP_CMDSHELL_AVAILABLE) or kb.xpCmdshellAvailable
kb.errorChunkLength = hashDBRetrieve(HASHDB_KEYS.KB_ERROR_CHUNK_LENGTH)
if kb.errorChunkLength and kb.errorChunkLength.isdigit():
kb.errorChunkLength = int(kb.errorChunkLength)
else:
kb.errorChunkLength = None
conf.tmpPath = conf.tmpPath or hashDBRetrieve(HASHDB_KEYS.CONF_TMP_PATH)
for injection in hashDBRetrieve(HASHDB_KEYS.KB_INJECTIONS, True) or []:
if isinstance(injection, InjectionDict) and injection.place in conf.paramDict and \
injection.parameter in conf.paramDict[injection.place]:
if not conf.tech or intersect(conf.tech, injection.data.keys()):
if intersect(conf.tech, injection.data.keys()):
injection.data = dict(filter(lambda (key, item): key in conf.tech, injection.data.items()))
if injection not in kb.injections:
kb.injections.append(injection)
_resumeDBMS()
_resumeOS()

储存数据库信息到数据库

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def _resumeDBMS():
"""
Resume stored DBMS information from HashDB
"""
value = hashDBRetrieve(HASHDB_KEYS.DBMS)
if not value:
return
dbms = value.lower()
dbmsVersion = [UNKNOWN_DBMS_VERSION]
_ = "(%s)" % ("|".join([alias for alias in SUPPORTED_DBMS]))
_ = re.search(r"\A%s (.*)" % _, dbms, re.I)
if _:
dbms = _.group(1).lower()
dbmsVersion = [_.group(2)]
if conf.dbms:
check = True
for aliases, _, _, _ in DBMS_DICT.values():
if conf.dbms.lower() in aliases and dbms not in aliases:
check = False
break
if not check:
message = "you provided '%s' as a back-end DBMS, " % conf.dbms
message += "but from a past scan information on the target URL "
message += "sqlmap assumes the back-end DBMS is '%s'. " % dbms
message += "Do you really want to force the back-end "
message += "DBMS value? [y/N] "
test = readInput(message, default="N")
if not test or test[0] in ("n", "N"):
conf.dbms = None
Backend.setDbms(dbms)
Backend.setVersionList(dbmsVersion)
else:
infoMsg = "resuming back-end DBMS '%s' " % dbms
logger.info(infoMsg)
Backend.setDbms(dbms)
Backend.setVersionList(dbmsVersion)

储存操作系统信息到数据库

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def _resumeOS():
"""
Resume stored OS information from HashDB
"""
value = hashDBRetrieve(HASHDB_KEYS.OS)
if not value:
return
os = value
if os and os != 'None':
infoMsg = "resuming back-end DBMS operating system '%s' " % os
logger.info(infoMsg)
if conf.os and conf.os.lower() != os.lower():
message = "you provided '%s' as back-end DBMS operating " % conf.os
message += "system, but from a past scan information on the "
message += "target URL sqlmap assumes the back-end DBMS "
message += "operating system is %s. " % os
message += "Do you really want to force the back-end DBMS "
message += "OS value? [y/N] "
test = readInput(message, default="N")
if not test or test[0] in ("n", "N"):
conf.os = os
else:
conf.os = os
Backend.setOs(conf.os)

添加身份验证

如果有的话,添加身份验证。

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def _setAuthCred():
"""
Adds authentication credentials (if any) for current target to the password manager
(used by connection handler)
"""
if kb.passwordMgr and all(_ is not None for _ in (conf.scheme, conf.hostname, conf.port, conf.authUsername, conf.authPassword)):
kb.passwordMgr.add_password(None, "%s://%s:%d" % (conf.scheme, conf.hostname, conf.port), conf.authUsername, conf.authPassword)

直连数据库方式开始注入

开始注入,注入过程和普通相同,所以稍后在研究。

sss

处理目标参数

在开始之前,处理

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if conf.url and not any((conf.forms, conf.crawlDepth)):
kb.targets.add((conf.url, conf.method, conf.data, conf.cookie, None))

config文件

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if conf.configFile and not kb.targets:
errMsg = "you did not edit the configuration file properly, set "
errMsg += "the target URL, list of targets or google dork"
logger.error(errMsg)
return False

多目标处理

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if kb.targets and len(kb.targets) > 1:
infoMsg = "sqlmap got a total of %d targets" % len(kb.targets)
logger.info(infoMsg)

循环解包开始注入

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for targetUrl, targetMethod, targetData, targetCookie, targetHeaders in kb.targets:
try:
conf.url = targetUrl
conf.method = targetMethod.upper() if targetMethod else targetMethod
conf.data = targetData
conf.cookie = targetCookie
conf.httpHeaders = list(initialHeaders)
conf.httpHeaders.extend(targetHeaders or [])

处理参数

这里分GET和POST两种处理方式,

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if PLACE.GET in conf.parameters and not any([conf.data, conf.testParameter]):
for parameter in re.findall(r"([^=]+)=([^%s]+%s?|\Z)" % (re.escape(conf.paramDel or "") or DEFAULT_GET_POST_DELIMITER, re.escape(conf.paramDel or "") or DEFAULT_GET_POST_DELIMITER), conf.parameters[PLACE.GET]):
paramKey = (conf.hostname, conf.path, PLACE.GET, parameter[0])
print paramKey
if paramKey not in kb.testedParams:
testSqlInj = True
break
else:
paramKey = (conf.hostname, conf.path, None, None)
if paramKey not in kb.testedParams:
testSqlInj = True

比如传入

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python .\sqlmap.py -u http://demo.lorexxar.pw/get.php?user=user1

就获得

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(u'demo.lorexxar.pw', u'/get.php', 'GET', u'user')

check waf

然后开始检查waf

check waf

这里的check逻辑算法来自Reference: http://seclists.org/nmap-dev/2011/q2/att-1005/http-waf-detect.nse

通过随机数加payload构造最终payload

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payload = "%d %s" % (randomInt(), IDS_WAF_CHECK_PAYLOAD)

这里IDS_WAF_CHECK_PAYLOAD就是上面来源上的payload

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AND 1=1 UNION ALL SELECT 1,NULL,'<script>alert("XSS")</script>',table_name FROM information_schema.tables WHERE 2>1--/**/; EXEC xp_cmdshell('cat ../../../etc/passwd')#

拼接请求

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value = "" if not conf.parameters.get(PLACE.GET) else conf.parameters[PLACE.GET] + DEFAULT_GET_POST_DELIMITER
value += agent.addPayloadDelimiters("%s=%s" % (randomStr(), payload))

添加延迟

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pushValue(conf.timeout)
conf.timeout = IDS_WAF_CHECK_TIMEOUT

发起请求

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try:
retVal = Request.queryPage(place=PLACE.GET, value=value, getRatioValue=True, noteResponseTime=False, silent=True)[1] < IDS_WAF_CHECK_RATIO
except SqlmapConnectionException:
retVal = True
finally:
kb.matchRatio = None
conf.timeout = popValue()

识别waf

预先加载函数

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if not kb.wafFunctions:
setWafFunctions()

这里包含的waf检测规则非常复杂,sqlmap在这方面还是做的比较好

循环检测

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for function, product in kb.wafFunctions:
try:
logger.debug("checking for WAF/IDS/IPS product '%s'" % product)
found = function(_)
except Exception, ex:
errMsg = "exception occurred while running "
errMsg += "WAF script for '%s' ('%s')" % (product, getSafeExString(ex))
logger.critical(errMsg)
found = False
if found:
retVal = product
break

相应的显示

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if retVal:
errMsg = "WAF/IDS/IPS identified as '%s'. Please " % retVal
errMsg += "consider usage of tamper scripts (option '--tamper')"
logger.critical(errMsg)
message = "are you sure that you want to "
message += "continue with further target testing? [y/N] "
output = readInput(message, default="N")
if output and output[0] not in ("Y", "y"):
raise SqlmapUserQuitException
else:
warnMsg = "WAF/IDS/IPS product hasn't been identified"
logger.warn(warnMsg)

测试空连接

测试空连接的思路来自Reference: http://www.wisec.it/sectou.php?id=472f952d79293

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try:
pushValue(kb.pageCompress)
kb.pageCompress = False
page, headers, _ = Request.getPage(method=HTTPMETHOD.HEAD)
if not page and HTTP_HEADER.CONTENT_LENGTH in (headers or {}):
kb.nullConnection = NULLCONNECTION.HEAD
infoMsg = "NULL connection is supported with HEAD header"
logger.info(infoMsg)
else:
page, headers, _ = Request.getPage(auxHeaders={HTTP_HEADER.RANGE: "bytes=-1"})
if page and len(page) == 1 and HTTP_HEADER.CONTENT_RANGE in (headers or {}):
kb.nullConnection = NULLCONNECTION.RANGE
infoMsg = "NULL connection is supported with GET header "
infoMsg += "'%s'" % kb.nullConnection
logger.info(infoMsg)
else:
_, headers, _ = Request.getPage(skipRead = True)
if HTTP_HEADER.CONTENT_LENGTH in (headers or {}):
kb.nullConnection = NULLCONNECTION.SKIP_READ
infoMsg = "NULL connection is supported with 'skip-read' method"
logger.info(infoMsg)
except SqlmapConnectionException, ex:
errMsg = getSafeExString(ex)
raise SqlmapConnectionException(errMsg)
finally:
kb.pageCompress = popValue()

开始注入逻辑

从这里开始,终于开始真正的注入逻辑了。

CATALOG
  1. 1. 开始
  2. 2. 直连数据库方式
    1. 2.1. 初始化目标环境
  3. 3. 创建输出的储存文件
    1. 3.1. 创建文件
    2. 3.2. 写入基本信息
    3. 3.3. 创建dump文件夹
    4. 3.4. 创建文件文件夹
  4. 4. 检查post data中的参数
    1. 4.1. 检查参数
    2. 4.2. 判断是不是存在注入标志位
    3. 4.3. JSON数据处理
    4. 4.4. 数组数据处理
    5. 4.5. SOAP/XML数据处理
    6. 4.6. Multipart-like数据处理
    7. 4.7. crsf token的处理
  5. 5. 设置储存的数据库
    1. 5.1. 储存基本信息到数据库
    2. 5.2. 储存数据库信息到数据库
    3. 5.3. 储存操作系统信息到数据库
    4. 5.4. 添加身份验证
  6. 6. 直连数据库方式开始注入
  7. 7. sss
    1. 7.1. 处理目标参数
    2. 7.2. config文件
    3. 7.3. 多目标处理
  8. 8. 循环解包开始注入
  9. 9. 处理参数
  10. 10. check waf
    1. 10.1. check waf
    2. 10.2. 识别waf
  11. 11. 测试空连接
  12. 12. 开始注入逻辑